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Revealing the Multifunctional Electrocatalysis of Indium-Modulated Phthalocyanine for High-Performance Lithium-Sulfur Batteries

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Energy & Environmental Materials 2024年第1期7卷 1-8页

作者： Yang Guo zhaoqing jin Jianhao Lu Zilong Wang Zihao Song Anbang Wang Weikun Wang Yaqin Huang Beijing Key Laboratory of Electrochemical Process and Technology for Materials Key Laboratory of Biomedical Materials of Natural MacromoleculesMinistry of EducationBeijing University of Chemical TechnologyBeijing 100029China Research Institute of Chemical Defense Beijing Key Laboratory of Advanced Chemical Energy Storage Technology and MaterialsBeijing 100191China

The sluggish kinetics of complicated multiphase conversions and the severe shuttling effect of lithium polysulfides(LiPSs)significantly hinder the applications of Li-S battery,which is one of the most promising candidates for the next-generation energy storage ***,a bifunctional electrocatalyst,indium phthalocyanine self-assembled with carbon nanotubes(InPc@CNT)composite material,is proposed to promote the conversion kinetics of both reduction and oxidation processes,demonstrating a bidirectional catalytic effect on both nucleation and dissolution of Li_(2)S *** theoretical calculation shows that the unique electronic configuration of InPc@CNT is conducive to trapping soluble polysulfides in the reduction process,as well as the modulation of electron transfer dynamics also endows the dissolution of Li_(2)S in the oxidation reaction,which will accelerate the effectiveness of catalytic conversion and facilitate sulfur ***,the InPc@CNT modified separator displays lower overpotential for polysulfide transformation,alleviating polarization of electrode during *** integrated spectroscopy analysis,HRTEM,and electrochemical study reveal that the InPc@CNT acts as an efficient multifunctional catalytic center to satisfy the requirements of accelerating charging and discharging ***,the Li-S battery with InPc@CNT-modified separator obtains a discharge-specific capacity of 1415 mAh g^(-1)at a high rate of 0.5 ***,the 2 Ah Li-S pouch cells deliver 315 Wh kg^(-1)and achieved 80%capacity retention after 50 cycles at 0.1 C with a high sulfur loading of 10 mg cm^(-2).Our study provides a practical method to introduce bifunctional electrocatalysts for boosting the electrochemical properties of Li-S batteries.

关键词： bidirectional catalyst indium phthalocyanine lithium-sulfur batteries pouch cells

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P4S10 modified lithium anode for enhanced performance of lithium–sulfur batteries

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Journal of Energy Chemistry 2020年第2期29卷 27-33页

作者： Meng Li Xiaojun Liu Qian Li zhaoqing jin Weikun Wang Anbang Wang Yaqin Huang Yusheng Yang Department of Material Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Military Power Sources Research and Development Center Research Institute of Chemical DefenseBeijing 100191 China Wanhua Cliemical Group Co. Ltdyantai 264000ShandongChina

To address the corrosion and dendrite issues of lithium metal anodes, a protective layer was ex-situ constructed by P4S10 modification. It was determined by X-ray photoelectron spectroscopy and Raman spectra that the main constituents of the protective layer were P4S10, Li3PS4 and other LixPySztype derivatives. The protective layer was proved to be effective to stabilize the interphase of lithium metal. With the modified Li anodes, symmetric cells could deliver stable Li plating/stripping for 16000 h;Li–S batteries exhibited a specific capacity of 520 m A h g-1 after 200 cycles at 1000 m A g-1 with average Coulombic efficiency of 97.9%. Therefore, introducing LixPySzbased layer to protect Li anode provides a new strategy for the improvement of Li metal batteries.

关键词： Lithium metal anode Ex-situ protective layer LixPySz Lithium-sulfur batteries

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Micrometer-sized ferrosilicon composites wrapped with multi-layered carbon nanosheets as industrialized anodes for high energy lithium-ion batteries

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Journal of Energy Chemistry 2020年第11期29卷 286-295页

作者： Meng Li jingyi Qiu Songtong Zhang Pengcheng Zhao zhaoqing jin Anbang Wang Yue Wang Yusheng Yang Hai Ming School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Research Institute of Chemical Defense Beijing 100191China Beijing Key Laboratory of Advanced Chemical Energy Storage Technology and Materials Research Institute of Chemical DefenseBeijing 100191China

Various nanostructured architectures have been demonstrated to be effective to address the issues of high capacity Si anodes. However, the scale-up of these nano-Si materials is still a critical obstacle for commercialization. Herein, we use industrial ferrosilicon as low-cost Si source and introduce a facile and scalable method to fabricate a micrometer-sized ferrosilicon/C composite anode, in which ferrosilicon microparticles are wrapped with multi-layered carbon nanosheets. The multi-layered carbon nanosheets could effectively buffer the volume variation of Si as well as create an abundant and reliable conductivity framework, ensuring fast transport of electrons. As a result, the micrometer-sized ferrosilicon/C anode achieves a stable cycling with 805.9 m Ah g-1 over 200 cycles at 500 mA g-1 and a good rate capability of455.6 mAh g-1 at 10 A g-1. Therefore, our approach based on ferrosilicon provides a new opportunity in fabricating cost-effective, pollution-free, and large-scale Si electrode materials for high energy lithium-ion batteries.

关键词： Ferrosilicon Multi-layered carbon nanosheets Micrometer-sized Si Material structural design Anode Lithium-ion batteries

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In-situ construction of hybrid artificial SEI with fluorinated siloxane to enable dendrite-free Li metal anodes

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Journal of Materiomics 2023年第2期9卷 318-327页

作者： Lei Wei zhaoqing jin Jianhao Lu Yang Guo Zilong Wang Gaoping Cao jingyi Qiu Anbang Wang Weikun Wang State Key Laboratory of NBC Protection for Civilian Beijing102205China Research Institute of Chemical Defense Beijing100191China Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical TechnologyBeijing100029China

Lithium(Li)metal anode holds great promise for high-energy-density rechargeable ***,it suffers from the Li dendrites growth and uncontrollable side reactions with electrolyte due to the unstable solid electrolyte interphase(SEI)***,we propose a facile strategy for the in-situ fabricate of organic-inorganic composite artificial SEI layers on Li surfaces,which consist of organic fluorinated siloxane and inorganic LiF-rich *** hybrid artificial SEI endows high mechanical strength(13.1 GPa)and Liþtransfer number(0.62).Such robust SEI protective layers can not only guide uniform nucleation and deposition of Li metal by facilitating uniform Li-ion distribution,but also prevent unfavourable side ***,the protected metallic lithium anode(PMTFPS-Li)anode enables stable Li plating/stripping performance in symmetric cells for more than 300 h at 4 mA$h/cm^(2)under a high areal capacity of 4 mA/cm^(2).Moreover,the PMTFPS-Li/S cells could maintain more than 300 stable cycles at 0.5C and the PMTFPS-Li/LFP cells present excellent cycling performance(400 cycles at 1C)and enhanced rate capability(110.4 mA$h/g at 3 C).This work will inspire the design of artificial SEI on Li anodes for advanced Li metal batteries.

关键词： Fluorinated siloxane Lithium metal anode Dendrite growth Artificial SEI In-situ reaction

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Te0.045S0.955PAN composite with high average discharge voltage for Li–S battery

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Journal of Energy Chemistry 2019年第12期28卷 249-255页

作者： Ke Wang Yuepeng Guan zhaoqing jin Weikun Wang Anbang Wang School of Materials Science and Technology China University of GeosciencesBeijing 100083China Department of Material Science and Engineering Beijing University of Chemical TechnologyBeijing J00029China Military Power Sources Research and Development Center Research Institute of Chemical DefenseBeijing 100191China

As a sulfur-containing cathode material,sulfide polyacrylonitrile(SPAN)is expected to be used for longlife lithium-sulfur battery because there is no shuttle effect occurred in its charge ***,its specific capacity and discharge potential need to be further improved to satisfy the urgent demands for high-performance *** this paper,Te0.045S0.955PAN composite was synthesized by co-heating TexS1-x and PAN,and the superior electrochemical performance to that of SPAN was obtained because of doping Te with high *** as-prepared Te0.045S0.955PAN composite possessed the specific capacity of 675 mAh g^-1 after 100 cycles at the current density of 0.1 A g^-1 with high capacity retention of96.6%compared to the second ***,during cycling,Te0.045S0.955PAN showed average discharge voltages of 1.88-1.91 V,which were higher than 1.85-1.88 V for SPAN at the same current *** doping Te provides a new strategy for increasing the energy density of SPAN.

关键词： Sulfurized polyacrylonitrile Tellurium Cathode Average discharge voltage Lithium-sulfur battery

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Improved Isospin Dependent Quantum Molecular Dynamics Model

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2004年第1期 21-22页

作者： Feng zhaoqing jin Genming Zhang Fengshou Bei.jing Normal University Beijing.

Isospin dependent quantum molecular dynamics (IQMD) model is further developed by introducing switch function method which deals with correctly the surface interaction and shell effect in the process of projectile and target approaching. In the improved IQMD (ImIQMD), the time evolution of the nucleons in the system is governed by Hamiltonian equation of motion, and the Hamiltonian consists of the kinetic energy and the effective interaction potential energy. The effective interaction potential energy is composed of the

关键词：量子分子动力学模型同位旋相关哈密顿方程表面相互作用 IQMD 开关功能时间演化壳效应

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Production of Heavy and Superheavy Nuclei in Massive Fusion Reactions

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2008年第1期 15-16页

作者： Feng zhaoqing jin Genming Li Junqing

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Production of Heavy Neutron-rich Isotopes in Transfer Reactions by Collisions of 238U＋238U

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2009年第1期 11-12页

作者： Feng zhaoqing jin Genming Li Junqing

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Entrance Channel Effect in Synthesis of Superheavy Nuclei

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IMP & HIRFL Annual Report 2004年 45-46页

作者： Feng zhaoqing, jin Genming, Fu Fen and Li Junqing

Production cross sections of superheavy nuclei Rf and Hs for asymmetric and nearly symmetric projectile-target combinations are systematically studied within the framework of the dinuclear system model. In the model, ...

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Entrance Channel Effect in Synthesis of Superheavy Nuclei

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2004年第1期 24-25页

作者： Feng zhaoqing, jin Genming, Fu Fen and Li Junqing

关键词：超重核合成通道效应模型框架产生截面双核系统组合系统蒸发残渣非对称

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