Article
Thermodynamics
Yang Hu, Song-Yul Choe, Taylor R. Garrick
Summary: Fundamental understanding of heat generation in lithium-ion batteries during operations is vital for the design of a cost-effective thermal management system in electric vehicles. Research has shown that the heat generation rate and total heat of tested cells increase with higher current and lower temperature. The development of a new calorimetric method significantly reduces testing time while maintaining high accuracy in parameter determination.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yih-Wen Wang, Hsiao-Ling Huang
Summary: An advanced lithium-ion polymer battery (LIPB) with higher energy density and flexible configuration is a mainstream candidate for electronics products. However, it can spontaneously ignite in case of cell failure like short circuit or thermal runaway. The thermophysical data of two commercial 603450 LIPBs with different cathodes (LiCoO2 and LiNixCoyMnzO2) were examined, and their heat capacity and enthalpy were analyzed. The study also identified the fire-explosion behavior and thermokinetic data of the LIPB for improved battery thermal management.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Energy & Fuels
Suzhen Liu, Tao Zhang, Chuang Zhang, Luhang Yuan, Zhicheng Xu, Liang Jin
Summary: In this paper, a dynamic non-uniform heat generation model is developed to study the impact of non-uniform temperature distribution on the cycle performance, cycle life, and safety of pouch lithium-ion batteries. The model estimates the regional heat generation rate based on the cell surface temperature and analyzes the temperature distribution and heat generation characteristics under different working conditions. By comparing the simulated results with experimental data, it is found that the model accurately predicts the dynamic non-uniform heat generation distribution of the batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Maan Al-Zareer, Carlos Da Silva, Cristina H. Amon
Summary: This paper introduces a novel thermal characterization approach for pouch lithium-ion batteries, which determines key thermophysical properties and heat generation rates through a combination of experimental and numerical simulation processes. The approach is practical, cost-effective, and does not require extensive equipment or detailed internal structure information.
JOURNAL OF POWER SOURCES
(2021)
Article
Electrochemistry
Jin Kyo Koo, Younghoon Yun, Jae Kwon Seo, Sung Hoon Ha, Dong Won Kim, Junyoung Mun, Young-Jun Kim
Summary: The pressure on electrodes in cells greatly affects their active material density and electronic conductivity. A single-layer pouch cell (60mAh) was used to study the electrochemical effects of external pressures ranging from 0 to 3 MPa. The high-pressure cell at 3 MPa showed poor capacity retention due to Li plating and pore-clogging on the graphite electrode. However, the optimized pressed cell did not hinder Li-ion transport in the graphite anode and achieved 82% capacity retention after 200 cycles. External pressure affects the electrode-electrolyte contact, but excessive pressure hinders the supplement of Li ions into the graphite anode, leading to increased polarization, electrolyte side reactions, and Li-metal deposition.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Mojtaba Eftekharnia, Robert Kerr, Maria Forsyth, Patrick C. Howlett
Summary: In order to utilize the advantages of high energy density lithium-metal batteries, their cycle life and safety need to be improved. External compression has been shown to enhance the performance of these batteries by reducing dendrite growth and improving lithium deposition morphology. This study investigates the behavior of high-capacity Li||LFP pouch cells in pyrrolidinium-based ionic liquid electrolytes under different levels of compression and discusses the mechanisms that affect the cell performance and failure. The results indicate that higher compression leads to more uniform and less dendritic lithium deposition.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Haitao Zhang, Yuchen Wang, Junfeng Huang, Wen Li, Xiankan Zeng, Aili Jia, Hongzhi Peng, Xiong Zhang, Weiqing Yang
Summary: Low-enthalpy and high-entropy (LEHE) electrolytes can generate free ions and high ion mobility, improving the performance of polymer electrolytes and enhancing the energy storage efficiency of lithium batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Yang Hu, Song-Yul Choe, Taylor R. Garrick
Summary: In this paper, a new calorimeter is developed for measuring the heat generation rate of lithium-ion batteries in real time. The uneven heat generation distribution at the cell level is addressed, and the measurement is carried out for pouch format lithium-ion battery cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Chemical
Heemyeong Yang, Anh Le Mong, Dukjoon Kim
Summary: A novel polymer electrolyte membrane based on PAES-g-PVEC/PEG and 1-butyl-1-methylpyrrolidinium bis(trifluoromethyl sulfonyl)imide was prepared, which exhibited superior electrochemical performance, good thermal and mechanical stability. The dual functional groups of polyether and polycarbonate grafted on the PAES backbones provided a synergistic effect for lithium ion transport and electrochemical performance. The membrane containing 30 mol% PVEC and 70 mol% PEG showed high ionic conductivity and Li(+) transference number at room temperature, making it suitable for flexible solid state lithium metal batteries.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Energy & Fuels
Litao Yin, Are Bjorneklett, Elisabeth Soderlund, Daniel Brandell
Summary: An integrated battery model combining a 3D electrochemical model with a 2D heat transfer model accurately predicts thermal behavior and ageing kinetics in cylindrical cells. By controlling surface temperature and reducing core temperature with cooling liquids, differences in temperature can be minimized and accelerated ageing kinetics can be characterized effectively.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Chen Wang, Xiaohui Peng, Yihao Liu, Congcong Zhou, Weiwei Fang, Jilei Ye, Yusong Zhu, Lijun Fu, Lili Liu, Yuping Wu
Summary: This study compares and analyzes the performance of commonly used separators in Li-O2 batteries, and finds that batteries with GF/D and GF/F separators have more stable cycling performance. The research results provide a valuable reference for choosing suitable separators for Li-O2 batteries.
Article
Energy & Fuels
Honglei Ren, Li Jia, Chao Dang, Zhuoling Qi
Summary: In this study, an electrochemical thermal coupling model was established to simulate the discharge process of a prismatic lithium battery. The study found that the heat generation distribution in the porous electrodes was non-uniform and the negative electrode played a dominant role in the porous area. Furthermore, the relationship between total heat generation, discharge time, and discharge rate was proposed.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Woosung Choi, Jaesang Yoon, Eunkang Lee, Won-Sub Yoon
Summary: The study synthesized four different MnO2 polymorphs with controlled morphology to investigate their influences in conversion-based materials. Experimental results showed that spinel-phased MnO2 was formed during charge storage reactions for all samples, but the electrochemical performance varied based on the initial crystal structure. Among the polymorphs, lambda-MnO2 exhibited the highest reversible capacity of around 1270 mAh g(-1) due to its faster kinetics and structural similarity between cycled and pristine states. These findings suggest that polymorphs are an important factor in designing high-performance materials for next-generation rechargeable batteries.
Article
Chemistry, Analytical
Christopher Gardner, Elin Langhammer, Wenjia Du, Dan J. L. Brett, Paul R. Shearing, Alexander J. Roberts, Tazdin Amietszajew
Summary: This paper investigates the use of plasmonic-based optical fibre sensors as a real-time and in-situ diagnostic technique for lithium-ion batteries. The successful implementation of the fibre sensors inside pouch cells is reported, showing a promising correlation with battery state without impacting cell performance. The research provides insights into the sensor and analyte interaction mechanisms and suggests further developments for opto-electrochemical diagnostic techniques.
Article
Energy & Fuels
Mohammad Shahjalal, Yashraj Tripathy, Muhammad Sheikh
Summary: Accurate knowledge of battery temperature is crucial for safe operation of batteries in electrified vehicle applications. This study proposes a lumped thermal model that incorporates the entropic effect, enabling accurate prediction of transient thermal behaviors of pouch cells under various loads.
JOURNAL OF ENERGY STORAGE
(2023)
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)