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Chinese Chemical Letters 2022年第8期33卷 3894-3898页

作者： Menghan Ge Xiaoyu Zhou Yinping Qin Yang Liu Jingjing Zhou Xiaolei Wang Bingkun Guo Materials Genome Institute Shanghai UniversityShanghai 200444China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 2R3Canada

The lithium dendrite growth is still a serious challenge and impeding the realistic applications of all-solid-state lithium batteries.In view of the amide containing sediment layer can be stable on lithium/cathodes,a composite polymer electrolyte with amide-based matrix is in-situ built on porous electrodes.With the introduction of amide,the polymer electrolyte presents excellent ability to inhibit lithium dendrite growth and makes the Li/Li symmetric battery stably work for 500 h with a good ionic conductivity of 4.25×10^(-5)S/cm at 40℃.The solid electrolyte also shows a wide electrochemical stable window and good interface contact with the porous cathode.Utilizing this composite polymer electrolyte,the all-solid-state Li/LiFePO_(4) battery shows an initial discharge capacity of 146.5 mA h/g at 0.1 C under 40℃ and remains 81.4%in 100 cycles.The polymer electrolyte also can present better properties after modification.These results demonstrate that the presented PA-based composite polymer electrolyte could be served as a good electrolyte candidate for all-solid-state lithium-ion batteries.

关键词： Composite Amide Lithium dendrite solid state electrolyte Li metal battery

Lithium-ion transport in inorganic solid state electrolyte

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Chinese Physics B 2016年第1期25卷 139-173页

作者：高健赵予生施思齐李泓 Institute of Physics Chinese Academy of Sciences Materials Genome Institute Shanghai University Department of Physics and Astronomy and High Pressure Science and Engineering Center University of NevadaLas Vegas Nevada 89154 School of Materials Science and Engineering Shanghai University

An overview of ion transport in lithium-ion inorganic solid state electrolytes is presented, aimed at exploring and de signing better electrolyte materials. Ionic conductivity is one of the most important indices of the performance of inorganic solid state electrolytes. The general definition of solid state electrolytes is presented in terms of their role in a working cell （to convey ions while isolate electrons）, and the history of solid electrolyte development is briefly summarized. Ways of using the available theoretical models and experimental methods to characterize lithium-ion transport in solid state elec- trolytes are systematically introduced. Then the various factors that affect ionic conductivity are itemized, including mainly structural disorder, composite materials and interface effects between a solid electrolyte and an electrode. Finally, strategies for future material systems, for synthesis and characterization methods, and for theory and calculation are proposed, aiming to help accelerate the design and development of new solid electrolytes.

关键词： lithium-ion batteries solid state electrolyte ionic conductivity ion transport mechanism

Incombustible solid polymer electrolytes:A critical review and perspective

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Journal of Energy Chemistry 2024年第6期93卷 264-281,I0007页

作者： Kai Wu Jin Tan Zhenfang Liu Chenguang Bao Ao Li Qi Liu Baohua Li College of Materials Science and Engineering Hunan UniversityChangsha 413000HunanChina Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 055GuangdongChina

Since the advent of the solid-state batteries,employing solid polymer electrolytes(SPEs)to replace routine flammable liquid electrolytes is regarded to be one of the most promising solutions in pursing highenergy-density battery systems.SPEs with superior thermal stability,good processability,and high mechanical modulus obtain increasing attentions.However,SPE-based batteries are not impenetrable due to their decomposition and combustibility under extreme conditions.Researchers believe incorporating appropriate flame-retardant additives/solvents/fragments into SPEs can intrinsically reduce their flammability to solve the battery safety issues.In this review,the recent research progress of incombustible SPEs,with special emphasis on flame-retardant structural design,is summarized.Specifically,a brief introduction of flame-retardant mechanism,evaluation index for safety of SPEs,and a detailed overview of the latest advances on diverse-types SPEs in various battery systems are highlighted.The deep insight into thermal ru naway process,the free-standing incombustible GPEs,and the ratio nal design of pouch cell structures may be the main directions to motivate revolutionary next-generation for safety batteries.

关键词： Non-flammable electrolyte solid polymer electrolyte High safety electrolyte solid state electrolyte solid state battery

Poly(carbonate)-based ionic plastic crystal fast ion-conductor for solid-state rechargeable lithium batteries

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Journal of Energy Chemistry 2022年第10期31卷 360-369,I0009页

作者： He Zhou Jiaying Xie Lixia Bao Sibo Qiao Jiefei Sui Jiliang Wang School of Chemical Science and Technology National Demonstration Center for Experimental Chemistry and Chemical Engineering EducationYunnan UniversityKunming 650091YunnanChina

Liquid plasticizers with a relatively higher dielectric coefficient like ethylene carbonate(EC),propylene carbonate(PC),and ethyl methyl carbonate(EMC) are the most commonly used electrolyte materials in commercial rechargeable lithium batteries(LIBs) due to their outstanding dissociation ability to lithium salts.However,volatility and fluidity result in their inevitable demerits like leakage and potential safety problem of the final LIBs.Here we for the first time device a subtle method to prepare a novel thermal-stable and non-fluid poly(carbonate) solid-state electrolyte to merge EC with lithium carriers.To this aim,a series of carbonate substituted imidazole ionic plastic crystals(G-NTOC) with different polymerization degrees have been synthesized.The resulting G-NTOC shows an excellent solid-state temperature window(R.T.-115℃).More importantly,the maximum ionic conductivity and lithium transference number of the prepared G-NTOC reach 0.36 × 10^(-3) S cm^(-1) and 0.523 at 30℃,respectively.Galvanostatic cycling test results reveal that the developed G-NTOC solid-state electrolytes are favorable to restraining the growth of lithium dendrite due to the excellent compatibility between the electrode and the produced plastic crystal electrolyte.The fabricated LiIG-NTOCILiFeP04 all-solid-state cell initially delivers a maximum discharge capacity of 152.1 mAh g^(-1) at the discharge rate of 0.1 C.After chargingdischarging the cell for 60 times,Coulombic efficiency of the solid-state cell still exceeds 97%.Notably,the LiIG-NTOCILiFeP04 cell can stably light a commercial LED with a rated power of 0.06 W for more than1 h at 30℃,and the output power nearly maintains unchanged with the charging-discharging cycling test,implying a sizeable potential application in the next generation of solid-state LIBs.

关键词： Polycarbonate Ionic plastic crystal solid state electrolyte Fast ion conductor Rechargeable lithium batteries

Advances in electrolyte safety and stability of ion batteries under extreme conditions

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Nano Research 2023年第2期16卷 2311-2324页

作者： Zhuo Chen Keliang Wang Pucheng Pei Yayu Zuo Manhui Wei Hengwei Wang Pengfei Zhang Nuo Shang School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China state Key Lab.of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China

Electric vehicles have been promoted worldwide due to fast-charge technology of ion batteries.However,ion batteries’capacity and cycle life severely decay under extreme conditions,which is mostly related to electrolyte conductivity drop and side reactions.This review highlights the safety and stability of ion batteries in terms of thermal stability,non-flammability,low-temperature,and so on,outlining the disadvantages of organic liquid electrolyte,and summarizing effective solutions of polymer electrolytes,solid-state electrolytes,ionic liquid electrolytes,and aqueous electrolytes for the batteries.Moreover,the outlook on the electrolytes is put forward,which is available for research and development of the next generation batteries.

关键词： ion batteries battery safety polymer electrolyte solid state electrolyte ionic liquid electrolyte aqueous electrolyte

A Review of Perovskite Structure solid state Lithium Ion Conductor

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Journal of Rare Earths 2006年第S2期 132-138页

作者：张彬陈刚李鸿建 Department of Applied Chemistry Harbin Institute of Technology Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China

Perovskite structure (ABO3) solid state lithium ion conductor was reviewed. Up to date, the highest bulk lithium ion-conducting solid electrolyte is the perovskite-type lithium lanthanum titanate (LLTO) and related structure materials. Conductivity of LLTO at room temperature is comparable to that of commonly used polymer/liquid electrolytes. The reason for the high conductivity of LLTO is considered to be the big concentration of A-site vacancies, which benefits the 2D and 3D motion of lithium by a vacancy mechanism through the bottleneck between the A sites. The ionic conductivity of LLTO mainly depends on the size of the A-site ion cation, concentration of lithium and vacancy, and the nature of the B-O bond. Conductivity of LLTO can be increased by doping (e.g. A site, B site, A and B site, or O site). But during fast lithium ion inserting, B-site cation can be reduced. So the appropriate properties of LLTO for possible application in all-solid-state batteries still remain a challenge. In this paper, the synthesis, structure, electrical conductivity, and electrochemical characterization of LLTO and its related materials were reviewed.

关键词： perovskite structure lithium ion solid state electrolyte rare earths

Two-in-one tecton strategy to construct single crystalline hydrogen-bonded organic framework with high proton conductivity above 100℃

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中国科学:化学英文版 2023年第9期66卷 2563-2568页

作者： Xiao-Lu Wang Linfeng Liang Shuai Dou Xian-Ming Zhang Institute of Crystalline Materials Shanxi UniversityTaiyuan 030006China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China

By tactically integrating two different kinds of proton donors and acceptors into one supramolecular tecton, a new crystalline hydrogen-bonded organic framework(HOF-SXU-1) has been developed. HOF-SXU-1 features a remarkable proton conductivity as high as 6.32 mS cm^(-1) and an extremely low activation energy of 0.16 eV at 160℃ under anhydrous N_(2) conditions.By contrast, under identical conditions, the organic precursors of HOF-SXU-1 only exhibit negligible proton conduction performance, demonstrating that the formation of HOF is crucial for excellent proton conduction performance.

关键词： two-in-one strategy hydrogen-bonded organic framework proton conduction solid state electrolyte

Synthesis and characterization of Li_(1.3)Al_(0.3)Ti_(1.7)(PO_4)_3-coated LiMn_2O_4 by wet chemical route

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Rare Metals 2009年第2期28卷 122-126页

作者： Wu Xianming Li Runxiu Chen Shang He Zeqiang Jishou Univ Coll Chem & Chem Engn Jishou 416000 Peoples R China

Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 was prepared by wet chemical route. The phase,surface morphology,and electrochemical properties of the prepared powders were characterized by X-ray diffraction,scanning electron micrograph,and galvanostatic charge-discharge experiments. Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 has similar X-ray diffraction patterns as LiMn2O4. The corner and border of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 particles are not as clear as the uncoated one. The two powders show similar values of lithiumion diffusion coefficient. When cycled at room temperature and 55°C for 40 times at the charge-discharge rate of 0.2C,Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 shows the capacity retentions of 98.2% and 93.9%,respectively,which are considerably higher than the values of 85.4% and 79.1% for the uncoated one. Both the capacity retention differences between Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 and LiMn2O4 cycling at room temperature and 55°C become larger with the increase of charge-discharge rate. When the charge-discharge rate reaches 2C,the capacity retention of LATP-coated LiMn2O4 becomes 8.4% higher than the uncoated LiMn2O4 for room temperature cycling,and it becomes 11.1% higher than the latter when cycled at 55°C.

关键词： lithium ion battery coating electrochemistry solid state electrolyte intercalation compounds

STUDY ON ION-POLYMER INTERACTION AND MORPHOLOGIC STRUCTURE OF POLYURETHANE/SALT SYSTEMS

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Journal of Shanghai Jiaotong university(Science) 2001年第1期6卷 16-20页

作者：朱卫华杨兵王新灵唐小真 School of Chemistry and Chemical Tech. Shanghai Jiaotong Univ.

A poly(ethylene oxide) urethane and a model compound of hard segment(HD) were prepared in this study. solid polymer electrolytes were got from the blends of polyurethane, HD and NaClO 4. The samples were characterized by mean of FT IR and AFM. Effects of salt concentration on ion polymer interaction and further on morphologic structure of the composites were investigated and some interesting results were obtained. The results show that HD and concentration of NaClO 4 have an important effect on ion polymer interaction and morphologic structure of the complex. It is also found that in AFM pictures of the samples there is a transition point and ion polymer interaction of the polyurethane/salt systems play an extremely important role on morphologic structure.

关键词： morphology AFM polyurethane solid state electrolyte poly(ethylene oxide)