Article
Energy & Fuels
Tedjani Mesbahi, Rocio Bendala Sugranes, Reda Bakri, Patrick Bartholomeus
Summary: The paper proposes an electro-thermal coupled model for a lithium-ion battery, accurately describing physicochemical phenomena in the battery system. By calculating power losses through temperature distribution to update electric parameters, the model achieves electric-thermal coupling. It can simulate dynamic interaction between battery behaviors and shows high performance in predicting cell surface temperature.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Alan G. Li, Karthik Mayilvahanan, Alan C. West, Matthias Preindl
Summary: The DNRC model utilizes a novel physics-based diffusion component and N resistor-capacitor pairs to accurately characterize internal resistance and diffusion overpotentials of batteries in the time domain. Experimental validation shows an average absolute percent error of only 0.3% under different charge-discharge states, providing a new basis for real-time estimation and degradation reduction or diagnosis in battery management systems.
JOURNAL OF POWER SOURCES
(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
Materials Science, Multidisciplinary
Biaobing Chen, Min Liu, Shuang Cao, Gairong Chen, Xiaowei Guo, Xianyou Wang
Summary: This paper presents a new method for recovering FePO4 and Li2CO3 from spent LiFePO4 cathode materials to address the shortage of lithium resources. It was found that a sample with 12% carbon content in the LiFePO4 composite demonstrated better electrochemical performance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Energy & Fuels
Yi-Feng Feng, Jia-Ni Shen, Zi-Feng Ma, Yi-Jun He
Summary: This study investigates equivalent circuit models (ECMs) with different resistance capacitance (RC) numbers and models the relationship between circuit parameters and state of charge (SOC) through polynomial functions. The results demonstrate that the ECMs with three-RC network can effectively describe the terminal voltage response of SIBs.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Automation & Control Systems
Chong Hu, Haibo Liu, Yan Ji
Summary: This article aims to design an effective model and optimization method to describe and analyze the operating characteristics of the lithium-ion battery based on online measurement data. By exploiting the memory superiorities of the fractional-order, the fractional-order controlled autoregressive model is derived, which includes the electrochemical impedance spectroscopy and the n-RC equivalent circuit model. The approach designs a new gradient direction and fully utilizes the data from the lithium-ion battery by adding a suitable weighted factor. The experimental simulation result shows the performance of the proposed algorithms.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Energy & Fuels
Shunli Wang, Yongcun Fan, Chunmei Yu, Siyu Jin, Carlos Fernandez, Daniel-Ioan Stroe
Summary: The study introduced a novel covariance matching-electrical equivalent circuit modeling method with an improved adaptive weighting factor correction and differential Kalman filtering model for characterizing the adaptive working state of lithium-ion batteries. Experimental tests showed good response of the method to battery state changes, leading to improved estimation accuracy.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Hengsong Ji, Tianbei Luo, Liming Dai, Zhixia He, Qian Wang
Summary: In this paper, an electrochemical-thermal coupling model was developed and validated through battery disassembly and charge test experiments. The variation patterns of polarization and heat generation of lithium iron phosphate batteries at different charge rates were numerically investigated. The results showed that high-current charging exacerbates internal polarization and abnormal heat generation, and the changes in charge voltage profiles are strongly linked to total cell polarization. The study also found that the polarization in the electrodes dominates the cell polarization, and the large temperature difference at high charge currents is attributed to the difference in heat generation rates between the positive tab and the cell core. The findings are important for developing appropriate charging protection strategies and improving battery operation and life.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Chemical
Sergey V. Kuchak, Sergey V. Brovanov
Summary: This paper investigates the characteristics of high-capacity lithium-iron-phosphate batteries under impulse and long-term operation modes with different discharge current levels, and proposes a modified DP model. The model is capable of calculating the activation polarization parameters for different discharge currents and estimating the state of charge of the battery.
Article
Chemistry, Physical
Jacob Klink, Jens Grabow, Nury Orazov, Ralf Benger, Alexander Boerger, Annika Ahlberg Tidblad, Heinz Wenzl, Hans-Peter Beck
Summary: A method for detecting faults in lithium-ion cells during operation was presented and validated through experiments in this paper. The method relies on changes in cell impedance related to temperature to identify faults before thermal runaway occurs, showing effectiveness in detecting internal faults during dynamic loads.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Hao Cui, Dongsheng Ren, Mengchao Yi, Sixuan Hou, Kai Yang, Hongmei Liang, Xuning Feng, Xuebing Han, Youzhi Song, Li Wang, Xiangming He
Summary: The wetting process is crucial in battery production efficiency and quality, especially for large-format or high-energy density lithium-ion batteries. This study proposes a method for in-situ monitoring of the open circuit voltage during electrolyte filling, providing valuable information about the process.
Article
Energy & Fuels
Luyao Zhao, Minxue Zheng, Junming Zhang, Hong Liu, Wei Li, Mingyi Chen
Summary: Thermal runaway, caused by lithium plating in low-temperature cycling LIBs, is a significant hazard that hinders the application of LIBs in electric vehicles and energy storage systems. This study developed a thermal runaway model that includes the exothermic reaction between metal lithium and electrolyte to account for the aging effect. Validation tests confirmed the effectiveness of the model. The results revealed a three-stage process for thermal runaway and demonstrated that the reaction between plated lithium and electrolyte at around 140 degrees C accelerates the onset of thermal runaway.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Zhoujian An, Yabing Zhao, Xiaoze Du, Tianlu Shi, Dong Zhang
Summary: The research analyzed the electrical and thermal characteristics of Li-ion battery under different external short circuit currents and the failure characteristics of the electrodes. The performance and potential thermal risks of the short-circuited battery were evaluated. The results showed that the temperature rise and temperature rise rate of the battery were significantly related to the short circuit current and initial SOC. The failure of the short-circuit electrodes was found to involve electrolyte consumption, metal deposition, electrode particle breaking, separator closure, and increased internal resistance. The capacity of the battery recovered in the cycle test after the short circuit.
Article
Thermodynamics
Eero Immonen, Jussi Hurri
Summary: This article compares four thermo-electric CFD models for battery thermal analysis and finds that a simple constant internal resistance heat generation model is remarkably close in accuracy to the more tedious dynamic equivalent circuit model for purely thermal considerations. Although the study focuses only on discharging, the methods and models can also be used in charging situations in the future.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Fei Feng, Rui Yang, Jinhao Meng, Yi Xie, Zhiguo Zhang, Yi Chai, Lisha Mou
Summary: Solid-liquid electrolyte lithium-ion batteries (SLELBs) have commercial viability in electric vehicle applications. It is important to accurately understand battery behavior under different factors and build simulation models. Electrochemical impedance spectroscopy (EIS) can be used to study electrode processes and ion transport mechanisms in lithium-ion batteries. In this series of papers, regression models and an orthogonal experiment design are proposed to predict SLELB impedance under temperature and SOC factors. An equivalent circuit model based on the electrode process is established and simplified to obtain the simplified equivalent circuit model (SECM). The experimental results show that the SECM has accurate prediction performance and reduces the number of required experiments.
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)