Tootfinder

Battery recycler Redwood Materials and Project Stargate member Crusoe launch a 2,000-GPU data center in Nevada powered by repurposed EV batteries (Michelle Ma/Bloomberg)
https://www.bloomberg.com/news/articles/20

Crusoe, Redwood Partner on Nevada Data Center Powered by Used Batteries
It’s the world largest deployment of batteries on their second life and shows the lengths cloud operators are going to find power.

Big batteries flex their muscles, hit new records in evening peaks in Australia and California
#EnergieOpslag

Big batteries flex their muscles, hit new records in evening peaks in Australia and California
Big batteries are having a growing influence on evening demand peaks in Australia and in California, where their output hit 10 gigawatts for the first time this week.

"Indian researchers develop fast-charging sodium-ion battery, promising over 3,000 cycles"
#India #Batteries #Energy

Indian researchers develop fast-charging sodium-ion battery, promising over 3,000 cycles
NAtrium Super Ionic CONductor (NASICON) materials continue to show their potential for sodium-ion anodes in high-performance batteries, with fresh research out of India delving more into the materials.

Might be time to change the batteries in my weather station. #okwx

High mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries
Wenhui Lai, Jong Hak Lee, Lu Shi, Yuqing Liu, Yanhui Pu, Yong Kang Ong, Carlos Limpo, Ting Xiong, Yifan Rao, Chorng Haur Sow, Barbaros \"Ozyilmaz
https://arxiv.org/abs/2506.20189

High mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries
Despite advancements in silicon-based anodes for high-capacity lithium-ion batteries, their widespread commercial adoption is still hindered by significant volume expansion during cycling, especially at high active mass loadings crucial for practical use. The root of these challenges lies in the mechanical instability of the material, which subsequently leads to the structural failure of the electrode. Here, we present a novel synthesis of a composite combining expanded graphite and silicon nan…

Linear and Second-order-cone Valid Inequalities for Problems with Storage
Juan M. Morales
https://arxiv.org/abs/2506.21470 https://ar…

Linear and Second-order-cone Valid Inequalities for Problems with Storage
Batteries are playing an increasingly central role as distributed energy resources in the shift toward power systems dominated by renewable energy sources. However, existing battery models must invariably rely on complementarity constraints to prevent simultaneous charging and discharging, rendering models of a disjunctive nature and NP-hard. In this paper, we analyze the disjunctive structure of the battery's feasible operational set and uncover a submodularity property in its extreme power tr…

Batteries are now cheap enough to unleash solar’s full potential, getting as close as 97% of the way to delivering constant electricity supply 24 hours across 365 days cost-effectively in the sunniest places.
https://ember-energy.org/latest-insigh…

Solar electricity every hour of every day is here and it changes everything | Ember
Batteries are now cheap enough to unleash solar energy’s full potential, getting as close as 97% of the way to delivering constant electricity supply 24 hours across 365 days cost-effectively in the sunniest places.

Assessing Waste Heat Utilization in Power-to-Heat-to-Power Storage Systems for Cost-Effective Building Electrification
Alicia L\'opez-Ceballos, Alejandro Datas
https://arxiv.org/abs/2506.19403

Assessing Waste Heat Utilization in Power-to-Heat-to-Power Storage Systems for Cost-Effective Building Electrification
Fully electrifying the building sector requires not only the widespread adoption of photovoltaic (PV) self-consumption and heat pumps, but also the integration of cost-effective energy storage solutions. Hybridizing lithium-ion (Li-ion) batteries with power to heat to power storage (PHPS) systems, thermal batteries capable of thermal-to-electric energy conversion, offers a promising and economically viable solution. PHPS systems dispatch combined heat and power by utilizing the low-temperature …

Got some batteries, and now my prototype solar node is ready for being tested in the field.
#meshtastic

A new report from global energy think tank Ember says
🔥batteries have officially hit the price point that lets solar power deliver affordable electricity almost every hour of the year in the sunniest parts of the world
https://ember-ene…

Solar electricity every hour of every day is here and it changes everything | Ember
Batteries are now cheap enough to unleash solar energy’s full potential, getting as close as 97% of the way to delivering constant electricity supply 24 hours across 365 days cost-effectively in the sunniest places.

We all understand that Hochul's announcement is complete bullshit, right? Like, they haven't even picked a spot for the nuclear plant yet, and that will be a huge battle all by itself. Wind and solar (combined with batteries) will cost less and be rolled out far sooner. Hochul is announcing a project that will never happen.

Replaced article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[1/2]:
- Exceeding the maximum classical energy density in fully charged quantum batteries
Masahiro Hotta, Kazuki Ikeda

Optimal Design of Experiment for Electrochemical Parameter Identification of Li-ion Battery via Deep Reinforcement Learning
Mehmet Fatih Ozkan, Samuel Filgueira da Silva, Faissal El Idrissi, Prashanth Ramesh, Marcello Canova
https://arxiv.org/abs/2506.19146

Optimal Design of Experiment for Electrochemical Parameter Identification of Li-ion Battery via Deep Reinforcement Learning
Accurate parameter estimation in electrochemical battery models is essential for monitoring and assessing the performance of lithium-ion batteries (LiBs). This paper presents a novel approach that combines deep reinforcement learning (DRL) with an optimal experimental design (OED) framework to identify key electrochemical parameters of LiB cell models. The proposed method utilizes the twin delayed deep deterministic policy gradient (TD3) algorithm to optimize input excitation, thereby increasin…

"Uber to expand EV charging access and launch mopeds with swappable batteries in London"
#UK #UnitedKingdom #London #EV

I was so busy with all the preparations, that I forgot to tell you: I‘m at #NeosCon! Yeah, it’s that time of the year again, meeting old and new friends and recharging our community batteries. As always, we’re having such a great time! I‘ll post some more details after the conference.
Greetings from Karlsruhe!

While the rare earth market is dominated by China, Canada also has some of the largest reserves in the world.
But new rare earth mining projects have to balance the need for these materials with the environmental impacts that mining has on the land. 
Instead of starting from scratch, the University of Alberta and Calgary-based CVW CleanTech are trying to mine these valuable substances from tailings, a waste product of open-pit oilsands mining.
Previously known as Titanium …

New-age prospectors finding rare earth elements in tailings from Alberta oilsands | CBC News
Rare earth elements are a key part of the transition to a green economy. From magnets in wind turbines to batteries in electric vehicles, they’re needed for technology that is increasingly in demand.

Wow, setting electric cars with 90kWh batteries on fire in the middle of a crowd is seriously fucking bad karma.

BattBee: Equivalent Circuit Modeling and Early Detection of Thermal Runaway Triggered by Internal Short Circuits for Lithium-Ion Batteries
Sangwon Kang, Hao Tu, Huazhen Fang
https://arxiv.org/abs/2506.13577

BattBee: Equivalent Circuit Modeling and Early Detection of Thermal Runaway Triggered by Internal Short Circuits for Lithium-Ion Batteries
Lithium-ion batteries are the enabling power source for transportation electrification. However, in real-world applications, they remain vulnerable to internal short circuits (ISCs) and the consequential risk of thermal runaway (TR). Toward addressing the challenge of ISCs and TR, we undertake a systematic study that extends from dynamic modeling to fault detection in this paper. First, we develop {\em BattBee}, the first equivalent circuit model to specifically describe the onset of ISCs and t…

On expected #V2G returns: “Given the Netherlands’ more strained grid, Faton believes savings will be even higher there.”
Tough bet in a country where grid operators provide no financial incentives to residential customers to shift demand, let alone support the local grid with V2G.

'Utrecht Energized' launched: How bidirectional charging is set to make the breakthrough - electrive.com
Bidirectional charging is often hailed as the holy grail of e-mobility. The batteries of electric cars are not only used for driving but can also power homes

Non-Gaussian enhancement of precision in quantum batteries
Beatriz Polo, Federico Centrone
https://arxiv.org/abs/2505.24604 https://a…

Non-Gaussian enhancement of precision in quantum batteries
We investigate the fundamental limits of converting light into useful work, with a focus on the role of quantum resources in energy harvesting processes. Specifically, we analyze how quantum coherence, non-Gaussianity, and entanglement affect the fluctuations in the energy output of bosonic quantum batteries. Our findings reveal potential pathways to enhance the efficiency and stability of energy extraction from quantum batteries, with implications for the development of quantum thermal machine…

The discovery of a massive amount of lithium under the Salton Sea could make the U.S. lithium independent.
The metal is key for batteries in electric vehicles and solar panels.
But the area is also a delicate ecosystem.
We go to southern California to hear what hangs in the balance of the ballooning lithium industry,
and also how we extract other crucial substances  
– such as sand, copper and iron
– and turn them into semiconductors, circuitry and other …

Replaced article(s) found for physics.atm-clus. https://arxiv.org/list/physics.atm-clus/new
[1/1]:
- Exceeding the maximum classical energy density in fully charged quantum batteries
Masahiro Hotta, Kazuki Ikeda

Nothing destroys batteries like Microsoft #Teams

LeanExplore: A search engine for Lean 4 declarations
Justin Asher (Independent Researcher)
https://arxiv.org/abs/2506.11085 https://a…

LeanExplore: A search engine for Lean 4 declarations
The expanding Lean 4 ecosystem poses challenges for navigating its vast libraries. This paper introduces LeanExplore, a search engine for Lean 4 declarations. LeanExplore enables users to semantically search for statements, both formally and informally, across select Lean 4 packages (including Batteries, Init, Lean, Mathlib, PhysLean, and Std). This search capability is powered by a hybrid ranking strategy, integrating scores from a multi-source semantic embedding model (capturing conceptual me…

Coupled reaction and diffusion governing interface evolution in solid-state batteries
Jingxuan Ding, Laura Zichi, Matteo Carli, Menghang Wang, Albert Musaelian, Yu Xie, Boris Kozinsky
https://arxiv.org/abs/2506.10944

Coupled reaction and diffusion governing interface evolution in solid-state batteries
Understanding and controlling the atomistic-level reactions governing the formation of the solid-electrolyte interphase (SEI) is crucial for the viability of next-generation solid state batteries. However, challenges persist due to difficulties in experimentally characterizing buried interfaces and limits in simulation speed and accuracy. We conduct large-scale explicit reactive simulations with quantum accuracy for a symmetric battery cell, {\symcell}, enabled by active learning and deep equiv…

Continuing my move away from reliance on Amazon today searching for batteries - looked them up on Amazon, found cheaper from a UK company. Sorted.

Chinese companies' incentive is simple: "Don't lose market share, and future markets are included."
https://www.bbc.co.uk/future/article/20250530-how-electric-scooters-are-driving-chinas-salt-battery-push…

How electric scooters are driving China's salt battery push
The country is racing ahead of the rest of the world in bringing sodium-ion batteries to the mass market. This time, through scooters.

Meta-analysis of Life Cycle Assessments for Li-Ion Batteries Production Emissions
Maurizio Clemente, Prapti Maharjan, Mauro Salazar, Theo Hofman
https://arxiv.org/abs/2506.05531

Meta-analysis of Life Cycle Assessments for Li-Ion Batteries Production Emissions
This paper investigates the environmental impact of Li-Ion batteries by quantifying manufacturing-related emissions and analyzing how electricity mix and production scale affect emission intensity. To this end, we conduct a meta-analysis of life cycle assessments on lithium-ion batteries published over the past two decades, categorizing them by year, battery chemistry, functional unit, system boundaries, and electricity mix. We then carry out a cradle-to-gate assessment for a nickel manganese c…

"Enel inagurates 10 MWh second-life battery project at Italian airport"
#Italy #Batteries #Energy

Enel inagurates 10 MWh second-life battery project at Italian airport
Enel’s Pioneer project is expected to last 10 to 15 years and has been integrated with Rome-Fiumicino airport’s Solar Farm, self-consumption PV system.

Image-based measurements of Tafel slopes in aqueous MV/4-HO-TEMPO Flow Batteries
St\'ephane Chevalier, Yui Sasaki, Tsuyoshi Minami
https://arxiv.org/abs/2506.01264

Image-based measurements of Tafel slopes in aqueous MV/4-HO-TEMPO Flow Batteries
A total organic aqueous redox flow battery (RFB) employing methyl viologen (MV) electrolyte and 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (4-HO-TEMPO) is tested and characterized under microfluidic conditions. The absence of physical membrane and the quasi-two-dimensional energy transfers occurring in this RFB design enables the first direct measurement of Tafel kinetics, charge transfer, and charge transport resistances for both anolyte and catholyte reactants during the RFB operations. T…

Pseudo-random sequences for low-cost operando impedance measurements of Li-ion batteries
Jussi Sihvo, No\"el Hallemans, Ai Hui Tan, David A. Howey, Stephen. R. Duncan, Tomi Roinila
https://arxiv.org/abs/2506.07519

Pseudo-random sequences for low-cost operando impedance measurements of Li-ion batteries
Operando impedance measurements are promising for monitoring batteries in the field. In this work, we present pseudo-random sequences for low-cost operando battery impedance measurements. The quadratic-residue ternary sequence and direct-synthesis ternary sequence exhibit specific properties related to eigenvectors of the discrete Fourier transform matrix that allow computationally efficient compensation for drifts and transients in operando impedance measurements. We describe the application o…

Aluminum oxide coatings on Co-rich cathodes and interactions with organic electrolyte
M. D. Hashan C. Peiris, Michael Woodcox, Diana Liepinya, Robert Shephard, Hao Liu, Manuel Smeu
https://arxiv.org/abs/2506.09252

Aluminum oxide coatings on Co-rich cathodes and interactions with organic electrolyte
Lithium-ion batteries (LIBs) have become essential in modern energy storage; however, their performance is often limited by the stability and efficiency of their components, particularly the cathode and electrolyte. Transition metal layered oxide cathodes, a popular choice for lithium-ion batteries (LIBs), suffer from several degradation mechanisms, including capacity fading, reactions with the electrolyte, unstable cathode-electrolyte interfaces, and lattice breakdown during cycling. In recent…

Good article on some of the UK developments enabling aggregators (virtual lead parties) to unlock more demand side flexibility, including residential (heat pumps, batteries, EVs).
https://www.greenexecutives.com/post/unlocking-th…

Unlocking the Future of Energy: How UK Flex Markets Are Reshaping the Grid
With more renewable energy—especially wind and solar—being integrated than ever before, maintaining balance between supply and demand in real time is a growing challenge. That’s where flex markets come in - and everyone from business to consumers is invited to have a seat at the table.

This https://arxiv.org/abs/2502.12839 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Reservoir-assisted quantum battery charging at finite temperatures
Quantum batteries, as highly efficient energy storage devices, have garnered significant research interest. A key challenge in their development is to maximize the extractable energy (ergotropy) when operating within a finite-temperature reservoir. To address this, we applied quantum feedback control to the charger and investigated the effects of fermionic and bosonic thermal reservoirs on the performance of quantum batteries, including stored energy, ergotropy, and charging efficiency, in an o…

EStacker: Explaining Battery-Less IoT System Performance with Energy Stacks
Lukas Liedtke, Per Gunnar Kjeldsberg, Frank Alexander Kraemer, Magnus Jahre
https://arxiv.org/abs/2505.22366

EStacker: Explaining Battery-Less IoT System Performance with Energy Stacks
The number of Internet of Things (IoT) devices is increasing exponentially, and it is environmentally and economically unsustainable to power all these devices with batteries. The key alternative is energy harvesting, but battery-less IoT systems require extensive evaluation to demonstrate that they are sufficiently performant across the full range of expected operating conditions. IoT developers thus need an evaluation platform that (i) ensures that each evaluated application and configuration…

Machine learning accelerated finite-field simulations for electrochemical interfaces
Chaoqiang Feng, Bin Jiang
https://arxiv.org/abs/2506.10548 https://

Machine learning accelerated finite-field simulations for electrochemical interfaces
Electrochemical interfaces are of fundamental importance in electrocatalysis, batteries, and metal corrosion. Finite-field methods are one of most reliable approaches for modeling electrochemical interfaces in complete cells under realistic constant-potential conditions. However, previous finite-field studies have been limited to either expensive ab initio molecular dynamics or less accurate classical descriptions of electrodes and electrolytes. To overcome these limitations, we present a machi…

"EV battery recycling key to easing future lithium supply constraints, modeling study shows"
#EV #ElectricVehicle #Cars

EV battery recycling key to easing future lithium supply constraints, modeling study shows
Lightweight, powerful lithium-ion batteries are crucial for the transition to electric vehicles, and global demand for lithium is set to grow rapidly over the next 25 years. A new analysis from the University of California, Davis, published May 29 in Nature Sustainability, looks at how new mining operations and battery recycling could meet that demand. Recycling could play a big role in easing supply constraints, the researchers found.

This https://arxiv.org/abs/2505.16779 has been replaced.
initial toot: https://mastoxiv.page/@a…

Phase engineering of MoS$_2$ monolayers: A pathway to enhanced lithium-polysulfide battery performance
This study explores the potential of MoS$_2$ polymorphs, specifically the semiconducting 2H phase and the metallic 1T$^\prime$ phase, as anchoring materials to enhance the electrochemical performance of lithium-sulfur (Li--S) batteries. Using density functional theory calculations, we show that 1T$^\prime$-MoS$_2$ exhibits stronger Li--S interactions, greater charge transfer, and enhanced catalytic activity compared to its 2H counterpart, effectively suppressing polysulfide dissolution and faci…

Cloud-Based Interoperability in Residential Energy Systems
Darren Leniston, David Ryan, Ammar Malik, Jack Jackman, Terence O'Donnell
https://arxiv.org/abs/2506.05076

Cloud-Based Interoperability in Residential Energy Systems
As distributed energy resources (DERs) such as solar PV, batteries and electric vehicles become increasingly prevalent at the edge, maintaining grid stability requires advanced monitoring and control mechanisms. This paper presents a scalable smart grid gateway architecture that enables interoperability between Modbus-based inverters and IEEE 2030.5 cloud-based control systems. The proposed solution leverages Azure cloud services and edge-computing gateway devices to support dynamic configurati…

This https://arxiv.org/abs/2506.03439 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Optimizing Software Defined Battery Systems for Transformer Protection
Residential electric vehicle charging causes large spikes in electricity demand that risk violating neighborhood transformer power limits. Battery energy storage systems reduce these transformer limit violations, but operating them individually is not cost-optimal. Instead of individual optimization, aggregating, or sharing, these batteries leads to cost-optimal performance, but homeowners must relinquish battery control. This paper leverages virtualization to propose battery sharing optimizati…

Optimizing Software Defined Battery Systems for Transformer Protection
Sonia Martin, Obidike Nnorom Jr., Philip Levis, Ram Rajagopal
https://arxiv.org/abs/2506.03439

Optimizing Software Defined Battery Systems for Transformer Protection
Residential electric vehicle charging causes large spikes in electricity demand that risk violating neighborhood transformer power limits. Battery energy storage systems reduce these transformer limit violations, but operating them individually is not cost-optimal. Instead of individual optimization, aggregating, or sharing, these batteries leads to cost-optimal performance, but homeowners must relinquish battery control. This paper leverages virtualization to propose battery sharing optimizati…