文献类型：期刊文献

英文题名：Building hierarchically hybridized carbon to anchor SnO2 nanoparticles for greatly enhanced lithium storage

作者：Liu, Ying[1];Chen, Ling[1,2];Jiang, Hao[1,2];Li, Chunzhong[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：944

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20230913658685);WOS:【SCI-EXPANDED(收录号:WOS:000931905800001)】；

基金：This work was supported by the National Natural Science Foundation of China (22208102) , the Shanghai Super Postdoctoral Incentive Program (2021097) , and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Lithium-ion batteries; SnO2; Anode materials; N-doped carbon foam; Carbon nanotubes

摘要：Tin oxide (SnO2) is one of the promising anode materials for lithium-ion batteries (LIBs) owing to its high specific capacity and low cost. However, the sluggish Li+ storage kinetics and huge volume change seriously restrict its rapid charge/discharge capability and cycle stability. Herein, we demonstrate a novel structure of ultrafine SnO2 nanoparticles anchored on carbon nanotubes foam with subsequent carbon coating (SnO2/ NCF-CNTs@C). In which, NCF-CNTs can served as conductive substrates for SnO2 nanoparticles, promoting the transfer for both electrons and ions. In addition, the carbon coating layer can prevent the falling and pulverization of SnO2 nanoparticles and meanwhile alleviate the volume expansion during the electro-chemical processes. Therefore, the SnO2/NCF-CNTs@C hybrids show excellent rate and cycle performance, which achieves a reversible capacity of 1059.2 mA h g-1 at 0.1 A g-1 and 518.2 mA h g-1 at 5.0 A g-1 and 554.9 mA h g-1 can be remained after 500 cycles at 2.0 A g-1.(c) 2023 Elsevier B.V. All rights reserved.