Article
Energy & Fuels
Ivo Horstkoetter, Philipp Gesner, Kerstin Hadler, Bernard Baeker
Summary: Understanding the degradation processes of lithium-ion cells is a current and pressing challenge, influenced by various operating conditions. Experimentation has shown that the discharge dynamics of a load profile significantly impact battery degradation, with higher current gradients resulting in larger degradation rates. This linear relationship between current gradient and degradation rate highlights the importance of considering dynamic influences in battery aging studies.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Ming-Ying Zhou, Jian-Bang Zhang, Chi-Jyun Ko, Kuo-Ching Chen
Summary: In this study, a time-saving approach for measuring the open-circuit voltage (OCV) of a battery is proposed. By using a simplified first-order RC circuit model, the OCV at each state of charge (SOC) can be computed without the need for complete voltage relaxation information. Experimental results demonstrate that this approach significantly reduces the measurement time (usually less than 6 minutes) while maintaining high accuracy (usually less than 3 mV) compared to traditional methods.
JOURNAL OF POWER SOURCES
(2023)
Article
Thermodynamics
Qiao Xue, Junqiu Li, Peipei Xu
Summary: This paper proposes a machine learning method for swift capacity prediction using fractional charging voltage segments. By intercepting voltage feature segments with different voltage ranges and utilizing advanced machine learning models to establish a mapping function between the intercepted segments and battery capacity, accurate battery capacity prediction can be achieved.
Article
Energy & Fuels
Patrik Ollas, Torbjorn Thiringer, Mattias Persson, Caroline Markusson
Summary: This study compares and quantifies the annual losses for three representations of battery systems in a residential building with solar PV. The results reveal the inadequacy of using a constant battery internal resistance and show the discrepancy in annual losses compared to the case with current-dependent internal resistance. The study also highlights the flaw of modeling the battery system's efficiency with a fixed round trip efficiency and quantifies the variation in loss discrepancy depending on the scenario.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yue Liu, Bingxue Yu, Hongli Wang, Kaiyang Zeng
Summary: Principal component analysis and correlation analysis are applied to decompose the contact resonance frequency (f(0)) signal, providing important information about surface morphology and electromechanical behavior. A customized method based on this analysis can effectively distinguish the responses from different materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Shinji Kondou, Yusuke Sakashita, Xiaoxiao Yang, Kei Hashimoto, Kaoru Dokko, Masayoshi Watanabe, Kazuhide Ueno
Summary: The study found that poly(LiSTFSA) exhibited the highest ionic conductivity in the lowest polar mixture at the highest salt concentration, attributed to a unique conduction phenomenon. This provides insights into a new design strategy for nonaqueous liquid electrolytes for LIBs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Jialong Liu, Qiangling Duan, Kaixuan Qi, Yujun Liu, Jinhua Sun, Zhirong Wang, Qingsong Wang
Summary: This study investigates the aging mechanisms and state of health prediction of lithium-ion batteries throughout their lifespan. Battery capacity fading is divided into three stages: stable fading, fast fading, and repetition between capacity increase and decrease. Incremental capacity analysis and electrochemical impedance spectroscopy are used to study relevant aging mechanisms. In the first stage, aging mechanisms include loss of lithium and active material at both electrodes. In the second stage, aging mechanisms are loss of lithium and active material at the negative electrode. In the third stage, the loss of lithium is recovered to increase capacity. Finally, a back propagation neural network optimized by genetic algorithm is used to predict the state of health of lithium-ion batteries, including cycle life, second-life use, and residual capacity.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Leonard Jahn, Felix Katzer, Michael A. Danzer
Summary: The study uncovers the impact of lithium deposition on cell voltage and thickness, demonstrating that dilation behavior and voltage analysis can be used to detect LD, proposing a Bayes algorithm for combined data detection.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Shasha Qu, Wenbin Wu, Yunfan Wu, Yanping Zhuang, Jie Lin, Laisen Wang, Qiulong Wei, Qingshui Xie, Dong-Liang Peng
Summary: In this study, LiF thin film was sputtered on LCO electrodes to enhance electrochemical performance and reduce voltage polarization. The various polarization components were quantified, and the improved properties of LiF-coated LCO were confirmed through electrochemical tests and in-situ XRD experiments. This work provides a reference for quantifying polarization components and suggests the potential use of LiF film coating in developing similar cathode materials.
Article
Energy & Fuels
Rowena H. Brugge, Richard J. Chater, John A. Kilner, Ainara Aguadero
Summary: The current lithium ion battery technology poses safety risks, with the development of solid ceramic electrolytes offering a safer alternative for the next generation of all-solid-state batteries. However, the lithium diffusion behavior in these solid electrolytes and transport properties at the metal anode interface are not well understood. The proposed methodology aims to obtain lithium diffusion coefficients of bulk solid ceramic electrolytes and study their interfaces with electrodes for further optimization and performance enhancement in solid-state lithium batteries and hybrid systems.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Chemistry, Physical
Felix Katzer, Michael A. Danzer
Summary: The article introduces an in-situ detection method for detecting lithium deposition, which analyzes battery behavior for LD detection and adjusts charging rate based on detection results. Multiple methods are employed to detect LD, including coulombic efficiency, dilation method, differential voltage analysis, and impedance relaxation method. Characteristic frequencies are identified using impedance spectroscopy for mechanistic interpretation of the phenomena.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Jiahuan Lu, Rui Xiong, Jinpeng Tian, Chenxu Wang, Chia-Wei Hsu, Nien-Ti Tsou, Fengchun Sun, Ju Li
Summary: This article proposes a deep learning framework based on recurrent neural network (RNN) to predict the charge and discharge capacity trajectories of batteries under both fixed and random future operating conditions. The framework achieves accurate predictions and balanced performance compared to existing methods. This work highlights the potential of using RNN for actively forecasting the future of batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Energy & Fuels
Fuqian Yang
Summary: This work investigates the lithiation-induced swelling and deformation of three different electrode shapes under the framework of linear elasticity. The study reveals a linear relationship between lithium concentration and hydrostatic stress for all three electrode shapes. It is found that the lithium-induced swelling is proportional to the partial molal volume of lithium and the state of charge, and the swelling rate decreases over time. The constraint and geometrical shape of the electrode play crucial roles in controlling the swelling and stress evolution.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Chemistry, Physical
Jorn M. Reniers, Grietus Mulder, David A. Howey
Summary: Lithium-ion batteries are increasingly used in liberalized electricity systems driven by economic optimization. A physics-based degradation model can decrease battery degradation and increase revenue. The approach increases battery lifetime in terms of years and cycles, while also improving revenue potential.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Gerrit Karl Mertin, Dominik Wycisk, Marc Oldenburger, Gerry Stoye, Alexander Fill, Kai Peter Birke, Andreas Dirk Wieck
Summary: The entropy coefficient plays a crucial role in describing the thermodynamic behavior of battery cells and modeling the temperature effects on open-circuit voltage. Estimating the entropy through potentiometric measurements is time-consuming. To address this, various methods have been developed to quickly estimate the entropy coefficient. This paper proposes a new method that is comparatively simple in its execution and evaluation. The method utilizes the relationship between dynamic temperature changes and voltage variations in order to estimate the entropy coefficient, significantly reducing the measurement time by a factor of 13 compared to the potentiometric method under the specified conditions.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)