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Scalable synthesized high-performance TiO_(2)-Si-C hybrid anode for lithium batteries

Journal of Energy Chemistry 2023年第2期77卷 348-358,I0009页

作者： Liao Shen Chengjie Xu Jingguo Gao Jianming Tao Qiaobao Zhang Yue Chen Yingbin Lin Zhigao Huang Jiaxin Li College of Physics and Energy Fujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research CenterFujian Normal UniversityFuzhou 350117FujianChina Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fuzhou 350117FujianChina Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering Fuzhou 350117FujianChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina

At present,developing a simple strategy to effectively solve the shackles of volume expansion,poor conductivity and interface compatibility faced by Si-C anode in lithium batteries(LIBs)is the key to its ***,low-cost nano-Si powders were prepared from Si-waste of solar-cells by sanding treatment,which can effectively reduce the commercialization cost for Si-C ***,micro-nano structured Gr@Si/C/TiO_(2) anode materials with graphite(Gr)as the inner core,TiO_(2)-doped and carbon-coated Si as the outer coating-layer,were synthesized at kilogram-scale per milling *** characterization results indicate that TiO_(2)-doped carbon layer can improve the interface compatibility with the electrolyte,further promote the reduction of electrode polarization,and finally enhance the battery performance for the Gr@Si/C/TiO_(2) ***,Gr@Si/C/TiO_(2) composites can output excellent LIB performance,especially with high initial coulombic efficiency(ICE)of 82.51%and large average reversible capacity of~810 mA h g^(-1) at 0.8 A g^(-1) after 1000 ***,Gr@Si/C/TiO_(2)‖NCM811 pouch full cells deliver impressive performance especially with high energy density of~489.3 W h kg^(-1) based on the total weight of active materials,suggesting its promising application in the high performance LIBs.

关键词： Lithium-ion batteries Si-C anodes Kilogram-scale preparation interface compatibility Electrochemical mechanism

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In-situ coupling construction of interface bridge to enhance electrochemical stability of all solid-state lithium metal batteries

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Journal of Energy Chemistry 2024年第2期89卷 18-26,I0003页

作者： Qianwei Zhang Rong Yang Chao Li Lei Mao Bohai Wang Meng Luo Yinglin Yan Yiming Zou Lisheng Zhong Yunhua Xu International Research Center for Composite and Intelligent Manufacturing Technology Institute of Chemical Power SourcesXi’an University of TechnologyXi’an 710048ShaanxiChina School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048ShaanxiChina School of Electrical Engineering Xi’an University of TechnologyXi’an 710048ShaanxiChina Yulin University Yulin 719000ShaanxiChina

Polymer-based composite electrolytes composed of three-dimensional Li_(6.4)La_(3)Zr_(2)Al_(0.2)O_(12)(3D-LLZAO)have attracted increasing attention due to their continuous ion conduction and satisfactory mechanical ***,the organic/inorganic interface is incompatible,resulting in slow lithium-ion transport at the ***,the compatibility of organic/inorganic interface is an urgent problem to be *** by the concept of“gecko eaves”,polymer-based composite solid electrolytes with dense interface structures were *** bridging of organic/inorganic interfaces was established by introducing silane coupling agent(3-chloropropyl)trimethoxysilane(CTMS)into the PEO-3D-LLZAO(PL)*** in-situ coupling reaction improves the interface affinity,strengthens the organic/inorganic interaction,reduces the interface resistance,and thus achieves an efficient interface ion transport *** prepared PEO-3D-LLZAO-CTMS(PLC)electrolyte exhibits enhanced ionic conductivity of 6.04×10^(-4)S cm^(-1)and high ion migration number(0.61)at 60℃and broadens the electrochemical window(5.1 V).At the same time,the PLC electrolyte has good thermal stability and high mechanical ***,the Li Fe PO_(4)|PLC|Li battery has excellent rate performance and cycling stability with a capacity decay rate of 2.2%after 100 cycles at 60℃and 0.1 *** advantages of PLC membranes indicate that this design approach is indeed practical,and the in-situ coupling method provides a new approach to address interface compatibility issues.

关键词： Organic/inorganic interphase Coupling effect Composite electrolyte interface compatibility

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Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification

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Chinese Journal of Polymer Science 2020年第9期38卷 983-992,I0007页

作者： Guang-Yao Yang Li-Fen Tong Xiao-Bo Liu Research Branch of Advanced Functional Materials School of Materials and EnergyUniversity of Electronic Science and Technology of ChinaChengdu 610054China

Multi-walled carbon nanotubes(MWCNTs)modified with silane coupling agent A-1120(MWCNTs-A1120)were *** with the raw MWCNTs,acidified MWCNTs(MWCNTs-COOH),and MWCNTs grafted with EDA(MWCNTs-NH2),MWCNTs-A1120 have the best dispersion in fluoroelastomer at the same doping ***,fluoroelastomer/MWCNTs-A1120 composite has the best mechanical properties with tensile strength of 13.92 MPa and elongation at break of 111.78%.Then,the effects of doping amount of MWCNTs-A1120 on the electrical properties of the composites were *** dielectric constant of the composite increases with the increase of MWCNTs-A1120,and the dielectric loss does not change much at the low doping amount such as 0.5 wt%.When the doping amount of MWCNTs-A1120 is 5 wt%,the dielectric constant and the dielectric loss value are greatly increased,and the volume resistivity is greatly decreased,which proves that the conductive network is formed in the composite,so the filling amount of 5 wt%is the percolation *** tensile deformation of the sample also affects the electrical properties of the *** the tensile deformation increases,the dielectric constant and dielectric loss of the composite *** the composite with 5 wt%MWCNTs-A1120,excessive tensile deformation will destroy the conductive network structure of the composite,so the composite will change from conductive material to dielectric ***,such composite is a good candidate for flexible conductive material or flexible dielectric material used in harsh environments such as high temperatures and various aggressive solvents.

关键词： Modified-MWCNTs Fluoroelastomer nanocomposite interface compatibility Dielectric properties Volume resistivity

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Ameliorating the interfacial issues of all-solid-state lithium metal batteries by constructing polymer/inorganic composite electrolyte

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Journal of Energy Chemistry 2021年第7期30卷 85-93页

作者： Su Wang Qifang Sun Wenxiu Peng Yue Ma Ying Zhou Dawei Song Hongzhou Zhang Xixi Shi Chunliang Li Lianqi Zhang Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Shandong Ruifu Lithium Co. LtdTaian 271601ShandongChina

Lithium metal is one of the most promising anodes for next-generation batteries due to its high capacity and low reduction ***,the notorious Li dendrites can cause the short life span and safety issues,hindering the extensive application of lithium ***,Li_(7)La_(3)Zr_(2)O_(12)(LLZO)ceramics are integrated into polyethylene oxide(PEO)to construct a facile polymer/inorganic composite solid-state electrolyte(CSSE)to inhibit the growth of Li dendrites and widen the electrochemical stability *** the feasibility of our strategy,the designed PEO-LLZO-LiTFSI composite solid-state electrolyte(PLLCSSE)exhibits an outstanding cycling property of 134.2 mAh g^(-1) after 500 cycles and the Coulombic efficiency of 99.1%after 1000 cycles at 1 C in LiFePO_(4)-Li *** cooperated with LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NCM622)cathode,the PLL-CSSE renders a capacity retention of 82.4%after 200 cycles at 0.2 *** importantly,the uniform dispersion of LLZO in PEO matrix is tentative tested via Raman and FT-IR spectra and should be responsible for the improved electrochemical *** same conclusion can be drawn from the interface investigation after *** work presents an intriguing solid-state electrolyte with high electrochemical performance,which will boost the development of all-solid-state lithium batteries with high energy density.

关键词： All-solid-state lithium battery Polymer/inorganic composite electrolyte Uniformly dispersion interface compatibility

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Block copolymer electrolyte with adjustable functional units for solid polymer lithium metal battery

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Journal of Energy Chemistry 2021年第1期30卷 67-74,I0003页

作者： Zhiyuan Lin Xianwei Guo Yubo Yang Mingxue Tang Qi Wei Haijun Yu College of Materials Sciences and Engineering Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaBeijing University of TechnologyBeijing 100124China Center for High Pressure Science&Technology Advanced Research Beijing 100094China

Solid polymer electrolytes have been considered as the promising candidates to improve the safety and stability of high-energy lithium metal ***,the practical applications of solid polymer electrolytes are still limited by the low ionic conductivity,poor interfacial contact with electrodes,narrow electrochemical window and weak mechanical ***,a series of novel block copolymer electrolytes with three-dimensional networks are designed by cross-linked copolymerization of the polyethylene glycol soft segments and hexamethylene diisocyanate trimer hard *** ionic migration performances and interface compatibilities with Li metal anode have been optimized delicately by tailoring the ratio of these functional *** optimized block copolymer electrolyte has shown an amorphous crystalline structure,a high ionic conductivity of ~5.7×10^(-4)S cm^(-1),high lithium ion transference number(~0.49),wide electrochemical window up to ~4.65 V(***+/Li) and favorable mechanical strength at 55℃.Furthermore,the enhanced interface compatibility can well support the normal operations of lithium metal batteries using both LiFePO4 and LiNi0.8Co0.15Al0.05O2 *** study not only paves a new way to develop solid polymer electrolyte with optimizing functional units,but also provides a polymer electrolyte design strategy for the application demand of lithium metal battery.

关键词： Block copolymer electrolyte Functional units Ionic migration performance interface compatibility Lithium metal battery

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Regulation of solvation structure and the cooperation environment of potassium bonds for wider-temperature adaptive potassium storage

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Rare Metals 2024年第4期43卷 1610-1621页

作者： Bing-Bing Liu Yi-Hui Liu You-Bin Zhang Zhen-Guo Qi Guo-Hui Qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao266042China

Antimony selenide(Sb_(2)Se_(3))is one of the perspective candidates for potassium-ion batteries due to its advanced virtues stem including featured high capacity,fertile reserves and the relative narrow band *** the unique advantages,it is still plagued by the unstable interface compatibility and poor wider-temperature *** optimization of microstructure and the construction of inorganic-organic hybrids with a low desolvation barrier and rapid kinetics behaviors are efficient to address these *** Sb_(2)Se_(3)nanorods enclosed by the S-doped carbon layer(SC),further crosslinked by the poly(N-isopropylacrylamide)(PM)film(PM@Sb_(2)Se_(3)@SC),were artificially fabricated,and it displays the enrichment ion aggregated model as well as contacted ion pair state,the well-tailored cooperation environment of potassium bonds,assuring a homogeneous potassium deposition and an excellent widertemperature *** complicated experimental studies and theoretical calculations authenticate the synergistic effects of geometric conformation and compositional design for the tremendously enhanced potassium ***,the full device over PM@Sb_(2)Se_(3)@SC anode and the potassium Prussian blue cathode manifests impressively durable cycling life and wider-temperature adaptability,verifying the glorious contribution from the finely manipulation in solvation structure and potassium bonds to enhancing the potassium storage behaviors.

关键词： Anode Sb_(2)Se_(3) rods interface compatibility Inorganic-organic electrode Potassium ion battery

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Theoretical and experimental design in the study of sulfide-based solid-state battery and interfaces

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Chinese Chemical Letters 2024年第2期35卷 242-251页

作者： Hongjie Xu Yujie Su Chenggong Zheng Yuchen Wang Yuping Tong Zhongzheng Yang Junhua Hu School of Materials Science and Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Titanium Based Advanced Materials Industrial Research Institute Jiaozuo 454191China

In recent years,due to the increasing demand for portable electronic devices,rechargeable solid-state battery technology has developed ***-ion batteries are the systems of choice,offering high energy density,flexible and lightweight design,and longer lifespan than comparable battery ***,a better understanding of the relationship between electrochemical mechanism and structural properties from theory and experiment will enable us to accelerate the development of high-performance and security *** review discusses the interplay between theoretical calculation and experiment in the study of lithium ion battery *** introduce the application of theoretical calculation method in solid-state batteries through the combination of theory and *** present the concept and assembly technology of solid-state batteries are *** basic parameters of solid-state electrolytes,especially sulfide-based solid-state electrolytes and their interface mechanisms with high-voltage cathode materials,are analyzed by theoretical *** present an overview on the scientific challenges,fundamental mechanisms,and design strategies for solid-state batteries,especially focusing on the issues of stability on solid-state electrolytes and the associated interfaces with both cathode and *** to the theoretical models,we can not only reveal the unprecedented mechanism from the atomic scale,but also analyze the interface problems in the battery thoroughly,thus effectively designing more promising electrolyte and interface coating *** blazed a new trial for engineering an interphase with improved interfacial compatibility for a long-term cyclability.

关键词： Theoretical simulation Sulfide-based electrolytes All solid-state battery Cathode-electrolyte interface interface compatibility

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Synthesis of two A-B-C type conjugated amphiphilic triblock fullerene derivatives and their application in organic solar cells

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Chinese Chemical Letters 2020年第1期31卷 119-124页

作者： Jikang Liu Pengfei Jiang Yao Wang Guoli Tu Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology

Two A-B-C type conjugated amphiphilic triblock fullerene derivatives C60-2 HMTPB and C60-2 EHTPB were obtained in multi steps synthesis with three different blocks,and the amphiphilic diblock molecular C60-4 TPB was also preferred as a *** as modifying layer on zinc oxide(ZnO),the three fullerene derivatives can all reduce the work function of ZnO via modulation of the interfacial dipoles and lead a better electrical *** introducing treatment of toluene,the obvious self-assembly of fullerene derivatives were observed,which were supported by X-ray diffraction and contact angle of water *** on PTB7-Th:PC71 BM system,the inverted organic solar cells devices with structure of ITO/ZnO/fullerene derivatives/PTB7-Th:PC71BM/Mo03/Al got power conversion efficiencies of 8.62%,8.83%and 9.00%for C60-4 TPB,C60-2 HMTPB and C60-2 EHTPB,respectively,compared 8.13%of devices with bare *** result of conjugated amphiphilic triblock fullerene derivatives provides a straightforward approaching by simultaneously modulating the morphology and interfacial work function of ZnO,which can also lead high performance in optoelectronic devices.

关键词： Amphiphilic triblock fullerene derivatives Interfacial dipoles interface compatibility Self-assembly Water contact angle

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Progress and perspectives of in situ polymerization method for lithium-based batteries

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Interdisciplinary Materials 2023年第4期2卷 609-634页

作者： Guanyou Xiao Hao Xu Chen Bai Ming Liu Yan-Bing He Institute of Materials Research(IMR) Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhenChina

The application of lithium-based batteries is challenged by the safety issues of leakage and flammability of liquid *** electrolytes(PEs)can address issues to promote the practical use of lithium metal ***,the traditional preparation of PEs such as the solution-casting method requires a complicated preparation process,especially resulting in side solvents evaporation *** large thickness of traditional PEs reduces the energy density of the battery and increases the transport bottlenecks of ***,it is difficult to fill the voids of electrodes to achieve good contact between electrolyte and *** situ polymerization appears as a facile method to prepare PEs possessing excellent interfacial compatibility with ***,thin and uniform electrolytes can be *** interfacial impedance can be reduced,and the lithium-ion transport throughput at the interface can be *** typical in situ polymerization process is to implant a precursor solution containing monomers into the cell and then in situ solidify the precursor under specific initiating conditions,and has been widely applied for the preparation of PEs and battery *** this review,we focus on the preparation and application of in situ polymerization method in gel polymer electrolytes,solid polymer electrolytes,and composite polymer electrolytes,in which different kinds of monomers and reactions for in situ polymerization are *** addition,the various compositions and structures of inorganic fillers,and their effects on the electrochemical properties are ***,challenges and perspectives for the practical application of in situ polymerization methods in solid-state lithium-based batteries are reviewed.

关键词： in situ polymerization interface compatibility lithium-based batteries polymer electrolytes

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A Heterogeneous Quasi‑solid‑State Hybrid Electrolyte Constructed from Electrospun Nanofibers Enables Robust Electrode/Electrolyte interfaces for Stable Lithium Metal Batteries

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Advanced Fiber Materials 2024年第3期6卷 727-738页

作者： Manxi Wang Shiwen Lv Manxian Li Xuan Li Chuanping Li Zulin Li Xiaochuan Chen Junxiong Wu Xiaoyan Li Yuming Chen Qinghua Chen Engineering Research Center of Polymer Green Recycling of Ministry of Education Fujian Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental and Resource Sciences and College of Carbon Neutral Modern IndustryFujian Normal UniversityFuzhou 350000China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350000China

Quasi-solid-state electrolytes that possess high ionic conductivity,excellent interface stability,and low interfacial resistance,are required for practical solid-state ***,a heterogeneous quasi-solid-state hybrid electrolyte(QSHE)with a robust lithium-ion transport layer composed of Li_(1+x)Al_(x)Ti_(2−x)(PO_(4))_(3)(LATP)nanoparticles(NPs)at the anode/electrolyte interface was fabricated using electrospun nanofibers as a skeleton via a facile in situ polymerization *** QSHE exhibits a high ionic conductivity(0.98 mS cm^(−1)),a wide electrochemical window(4.76 V ***/Li^(+)),and favorable compatibility with lithium metal(maintaining stability over 2000 h in a symmetrical cell)at room *** coupled with a Li|LiFePO_(4)battery,the QSHE enables the battery to retain 95.4%of its capacity after 300 cycles at 2 ***,the atomic force microscopy verifies the high Young’s modulus of the LATP-dominated bottom layer,while numerical simulation validates the effective distribution of lithium ions at the interface facilitated by LATP NPs,hence contributing to dendrite-free lithium plating/stripping *** straightforward strategy could pave the way for the development of high-performance and interfacially stable lithium metal batteries.

关键词： In situ polymerization Quasi-solid-state electrolytes interface compatibility Lithium dendrites

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