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A flexible, robust, and high ion-conducting solid electrolyte membranes enabled by interpenetrated network structure for all-solid-state lithium metal battery

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Journal of Energy Chemistry 2022年第5期31卷 603-611页

作者： Zhenchuan Tian Dukjoon Kim School of Chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea

Poly(vinyl alcohol)/poly(ethylene glycol)(PVA/PEG) semi-interpenetrating networks(s-IPN) were synthesized for the application of solid electrolyte membranes of lithium metal batteries. Thermal, mechanical and dimensional stability, lithium-ion conductivity, interfacial compatibility, and cell performance were evaluated to assure their application. As this s-IPN structure suppressed the crystallinity by formation of network structure, both the lithium-ion conductivity and mechanical strength were simultaneously enhanced. The PVA/PEG-3s-IPN showed the highest lithium-ion conductivity of 3.26 × 10^(-4)S cm^(-1)in a wide electrochemical window(5.8 V vs. Li/Li^(+)), maintaining the robust solid-state with the tensile strength beyond 16.2 MPa at room temperature. The synthesized solid electrolyte membranes exhibited quite high specific capacity over 122 m Ah g^(-1)at 0.1 C from Li|PVA/PEG-3s-IPN|LiFePO_(4) cell and the long-term stable lithium stripping/plating performance for 1000 cycles from Li symmetric cell.

关键词： Solid polymer electrolyte lithium battery Semi-IPN lithium-ion conductivity

Kalman Filter Estimation of lithium battery SOC Based on Model Capacity Updating

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Energy Engineering 2022年第2期119卷 739-754页

作者： Min Deng Quan Min Ge Yang Man Yu CCCC Second Highway Consultants Co. Ltd.Wuhan430056China Xi’an Aeronautical University Xi’an710077China Key Laboratory of Automobile Transportation Safety Guarantee Technology and Transportation Industry Xi’an710064China

High-precision estimation of lithium battery SOC can effectively optimize vehicle energy management,improve lithium battery safety protection,extend lithium battery cycle life,and reduce new energy vehicle costs.Based on the forgetting factor recursive least square method(FFRLS),Thevenin equivalent circuit model and Singular Value Decomposition-Unscented Kalman Filter(SVD-UKF),the SVD-UKF combined lithium battery SOC estimation algorithm with model capacity update is proposed,aiming at further improving the SOC estimation accuracy of lithium battery.The parameter identification of Thevenin model is studied by using the forgetting factor recursive least square method.To overcoming the shortcomings of Kalman filter linearization error and non-positive definite covariance matrix,the singular value decomposition unscented Kalman filter algorithm is proposed.It is worth mentioning that in order to consider the impact of battery available capacity attenuation on the estimation of lithium battery SOC,the model capacity update algorithm is used to optimize the model parameters and state joint estimation algorithm based on FFRLS&SVD-UKF.Verified by simulation and lithium battery test,the results show that the SVD-UKF algorithm based on model capacity update can accurately estimate the SOC of lithium battery in real time with the available capacity of lithium battery continuous attenuation.The purpose of improving the accuracy of SOC estimation of lithium batteries is achieved.

关键词： lithium battery state of charge forgetting factor singular value decomposition unscented Kalman filter

Inherent thermal-responsive strategies for safe lithium batteries

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Journal of Energy Chemistry 2024年第2期89卷 519-534,I0012页

作者： Jia-Xin Guo Chang Gao He Liu Feng Jiang Zaichun Liu Tao Wang Yuan Ma Yiren Zhong Jiarui He Zhi Zhu Yuping Wu Xin-Bing Cheng School of Energy and Environment Southeast UniversityNanjing 211189JiangsuChina School of Chemistry and Materials Science Nanjing University of Information Science and TechnologyNanjing 210044JiangsuChina

Safe batteries are the basis for next-generation application scenarios such as portable energy storage devices and electric vehicles,which are crucial to achieving carbon neutralization.Electrolytes,separators,and electrodes as main components of lithium batteries strongly affect the occurrence of safety accidents.Responsive materials,which can respond to external stimuli or environmental change,have triggered extensive attentions recently,holding great promise in facilitating safe and smart batteries.This review thoroughly discusses recent advances regarding the construction of high-safety lithium batteries based on internal thermal-responsive strategies,together with the corresponding changes in electrochemical performance under external stimulus.Furthermore,the existing challenges and outlook for the design of safe batteries are presented,creating valuable insights and proposing directions for the practical implementation of safe lithium batteries.

关键词： lithium battery Thermal safety Thermal runaway Thermal-responsive

Electrochemical characterization of AlPO_(4) coated LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2) cathode materials for high temperature lithium battery application

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Rare Metals 2021年第1期40卷 78-83页

作者： Jian-Hua Wang Yu Wang Yu-Zhong Guo Chang-Wei Liu Lu-Lu Dan Research Center for Analysis and Measure Kunming University of Science and TechnologyKunming 650093China School of Material Science and Engineering Kunming University of Science and TechnologyKunming 650093China

Aluminum phosphate(AlPO_(4))was used to modify the surface of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)(NCM)cathode material.The surface structure and electrochemical properties of the coated materials were investigated by X-ray photoelectron spectroscopy(XPS)and electrochemical impedance spectroscopy(EIS).The results confirm the formation of aluminum-containing solid solution on the surface of NCM particles.An aluminum phosphate coating blocks the Li+insertion-extraction process in cells charged at high rates at room temperature,increasing surface film resistance and decreasing discharge capacity.However,an aluminum phosphate aids the formation of a stable solid electrolyte interface film on NCM surface and stabilizes the Rct of cell as samples electrochemically cycled at 55℃.The electrochemical studies suggest that the initial columbic efficiency is significantly enhanced.An NCM sample coated with 1.0 wt%AlPO_(4) delivers a higher discharge capacity and shows excellent capacity retention ability.

关键词： Surface lithium battery Electrochemical

Electrospinning synthesis of novel lithium-rich 0.4Li2MnO3.0.6LiNi1/3CO1/3Mn1/3O2 nanotube and its electrochemical performance as cathode of lithium-ion battery

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Advances in Manufacturing 2016年第1期4卷 79-88页

作者： Lei-Lei Cui Xiao-Wei Miao Yu-Feng Song Wen-Ying Fang Hong-Bin Zhao Jian-Hui Fang Department of Chemistry Shanghai UniversityShanghai 200444 People's Republic of China Shanghai Key Laboratory of Mechanics in EnergyEngineering Shanghai University Shanghai 200072People's Republic of China Department of Chemical Engineering University ofWaterloo Waterloo N2L3G1 Canada

In this study, a lithium-rich 0.4Li2MnO3.0.6LiNi1/3Co1/3Mn1/3O2 nanotube layered cathode synthesized by novel electrospinning is reported, and the effects of temperature on the electrochemical performance and morphologies are investigated. The crystal structure is characterized by X-ray diffraction patterns, and refined by two sets of diffraction data （R-3m and C2/m）. Refined crystal structure is 0.4Li2MnO3.0.6LiNi1/3COl/3Mn13O2 compos- ite. The inductively coupled plasma optical emission spec- trometer and thermogravimetric and differential scanning calorimetry analysis measurement supply reference to opti- mize the calcination temperature and heat-treatment time. The morphology is characterized by scanning and high- resolution transmission electron microscope techniques, and the micro-nanostructured hollow tubes of Li-rich 0.4Li2MnO3-0.6LiNil/3COl/3Mn1/3O2 composite with outer diameter of 200-400 nm and the wall thickness of 50-80 nm are synthesized successfully. The electrochemical evaluation shows that 0.4Li2MnO3.0.6LiNi1/3Cov3Mn1/3O2 sintered at 800 ℃ for 8 h delivers the highest capacity of the first dis- charge capacity of 267.7 mAh/g between 2.5 V and 4.8 V at 0.1C and remains 183.3 mAh/g after 50 cycles. The electro- spinning method with heat-treatment to get micro-nanos- tructured lithium-rich cathode shows promising application inlithium-ion batteries with stable electrochemical performance and higher C-rate performance for its shorter Li ions transfer channels and stable designed structure.

关键词： Electrospinning Cathode - Nanotube lithium-rich lithium battery

Novel Nanosized Adsorbing Composite Cathode Materials for the Next Generational lithium battery

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Journal of Wuhan University of Technology(Materials Science) 2007年第2期22卷 234-239页

作者：张勇 School of Material and Chemical Engineering Zhengzhou University of Light Industry

A novel carbon-sulfur nano-composite material was synthesized by heating sublimed sulfur and high surface area activated carbon （HSAAC） under certain conditions. The physical and chemical per- formances of the novel carbon-sulfur nano-composite were characterized by scanning electron microscopy （SEM）, Brunauer-Emmett-Teller （BET） and X-ray diffraction （XRD）. The electrochemical performances of nano-composite were characterized by charge-discharge characteristic, cyclic voltammetry and electrochemical impendence spectroscopy （EIS）. The experimental results indicate that the electrochemical capability of nano- composite material was superior to that of traditional S-containing composite material. The cathode made by carbon-sulfur nano-composite material shows a good cycle ability and a high specific charge-discharge capacity. The HSAAC shows a vital role in adsorbing sublimed sulfur and the polysulfides within the cathode and is an excellent electric conductor for a sulfur cathode and prevents the shuttle behavior of the lithium-sulfur battery.

关键词： high surface area activated carbon sublimed sulfur lithium battery composite material： adsorbing composite

Strategies to Solve lithium battery Thermal Runaway:From Mechanism to Modification

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Electrochemical Energy Reviews 2021年第4期4卷 633-679页

作者： Lingchen Kong Yu Li Wei Feng School of Materials Science and Engineering Tianjin UniversityTianjin 300354China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin 300354China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

As the global energy policy gradually shifts from fossil energy to renewable energy,lithium batteries,as important energy storage devices,have a great advantage over other batteries and have attracted widespread attention.With the increasing energy density of lithium batteries,promotion of their safety is urgent.Thermal runaway is an inevitable safety problem in lithium battery research.Therefore,paying attention to the thermal hazards of lithium battery materials and taking corresponding preventive measures are of great significance.In this review,the heat source and thermal hazards of lithium batteries are discussed with an emphasis on the designs,modifications,and improvements to suppress thermal runaway based on the inherent structure of lithium batteries.According to the source of battery heat,we divide it into reversible heat and irreversible heat.Additionally,superfluous heat generation has profound effects,including thermal runaway,capacity loss,and electrical imbalance.Thereafter,we emphatically discuss the design and modification strategies for various battery components(anodes,cathodes,electrolytes,and separators)to suppress thermal runaway.Preparation of solid electrolyte interphase layers with excellent thermal stability and mechanical properties is the core of the modification strategy for anode materials.Additives,stable coatings,elemental substitution,and thermally responsive coating materials are commonly used to improve the safety of cathodes.Novel electrolyte additives,solid-state electrolytes,and thermally stable separators provide a good opportunity to solve the thermal runaway problem of next-generation high-performance electrochemical storage devices.

关键词： lithium battery Thermal runaway battery safety Electrode materials battery components

lithium-ion battery data and where to find it

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能源与人工智能(英文)

能源与人工智能(英文) 2021年第3期5卷 255-269页

作者： Gonçalo dos Reis Calum Strange Mohit Yadav Shawn Li School of Mathematics University of EdinburghThe King’s BuildingsEdinburgh EH93FDUK Centro de Matemática e Aplicações(CMA) FCTUNLQuinta da Torre2829-516 CaparicaPortugal Indian Institute of Technology KanpurIndia

lithium-ion batteries are fuelling the advancing renewable-energy based world.At the core of transformational developments in battery design,modelling and management is data.In this work,the datasets associated with lithium batteries in the public domain are summarised.We review the data by mode of experimental testing,giving particular attention to test variables and data provided.Alongside highlighted tools and platforms,over 30 datasets are reviewed.

关键词： lithium battery Public data battery data battery tests Machine learning

Summary of the Performance of V_(2)O_(5)Materials as lithium battery Cathode

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Journal of Electronic Research and Application 2021年第4期5卷 8-17页

作者： Weihao Wang Room 1303 Building 6966 Gulong RoadShanghai 201102China

lithium battery has recently gained more and more attention worldwide.It has wide usage that range from toys to electric cars.Choosing a suitable material that best fits the overall performance as electrode for the battery is very essential.For cathode material,apart from the traditional and widely-used LiCoCO_(2),LiFePO_(4)and so on,there are innovations that include the use of V_(2)O_(5).Researches have been done focusing on how to further improve the performance for V_(2)O_(5)cathode in terms of different structure,forms or combination with other chemical molecules.This research paper will make a summary of the materials derived from traditional V_(2)O_(5)as well as their performances.

关键词： lithium battery Cathode material V_(2)O_(5)materials and performance