首页|Electrochemical reconstruction:a new perspective on Sn metal-organic complex microbelts as robust anode for lithium storage

Electrochemical reconstruction:a new perspective on Sn metal-organic complex microbelts as robust anode for lithium storage

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Tin-based materials with high theoretical capacity and suitable working voltage are ideal anode materials for lithium-ion batteries(LIBs).However,to overcome their shortcomings(volume expansion and inferior stability),the preparation processes are usually complicated and expensive.Herein,a tin-based metal-or-ganic complex(tin 1,2-benzenedicarboxylic acid,Sn-BDC)with one-dimensional microbelt morphology is synthesized by a facile,rapid and low-cost co-precipitation method,and served as anode material for LIBs without any post-treat-ment.Sn-BDC exhibits a high reversible capacity with 609/440 mAh·g-1 at 50/2000 mA·g-1,and robust cycling stability of 856 mAh·g-1 after 200 cycles at 200 mA·g-1,which are obviously superior to that of the SnOx/C coun-terparts.Moreover,an electrochemical reconstruction per-spective on the lithium storage mechanism of Sn-BDC is proposed by systematic ex-situ characterizations.The reconstructed SnO2 replaces Sn-BDC and becomes the active material in the subsequent cycles.As the by-product of the lithiation reaction,the formed Li-based metal-or-ganic complex(Li-BDC,wrapped around the reconstructed SnO2)plays an important role in alleviating volume expansion and accelerating the charge transfer kinetics.This work is beneficial to design and construct the new electrode materials based on the electrochemical recon-struction for advanced LIBs.

Electrochemical reconstructionMetal-organic complexAnodeLithium storage mechanismLithium-ion batteries

Jin-Ke Shen、Nai-Teng Wu、Li-Yuan Wang、Gang Jiang、Dong-Lei Guo、Jin Li、Gui-Long Liu、Hong-Yu Mi、Huan Pang、Xian-Ming Liu

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Key Laboratory of Function-oriented Porous Materials of Henan Province,College of Chemistry and Chemical Engineering,Luoyang Normal University,Luoyang 471934,China

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,School of Chemical Engineering and Technology,Xinjiang University,Urumqi 830046,China

School of Chemistry and Chemical Engineering,Institute for Innovative Materials and Energy,Yangzhou University,Yangzhou 225009,Jiangsu,China

National Natural Science Foundations of ChinaNational Natural Science Foundations of ChinaNational Natural Science Foundations of ChinaNatural Science Foundations of Henan ProvinceProgram for Science & Technology Innovation Talents in Universities of Henan ProvinceKey Science and Technology Program of Henan Province

5190415221965033U200321622230042050220HASTIT020222102240044

2024

10.1007/s12598-023-02408-8

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(1)
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