文献类型：期刊文献

英文题名：Incorporating SnO2 nanodots into wood flour-derived hierarchically porous carbon as low-cost anodes for superior lithium storage

作者：Zhang, Wei[1];Xu, Yunlong[1];Li, Huihua[3,4];Wang, Chenxu[1];Qin, Bingsheng[3,4];Li, Zhimiao[1];Chen, Yue[1];Jiang, Kun[1];Zhang, Huang[2,3,4]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Northwestern Polytech Univ, Xian Inst Flexible Elect, Xian 710072, Shaanxi, Peoples R China;[3]Helmholtz Inst Ulm, Helmholtzstr 11, D-89081 Ulm, Germany;[4]Karlsruhe Inst Technol, POB 3640, D-76021 Karlsruhe, Germany

年份：2020

卷号：856

外文期刊名：JOURNAL OF ELECTROANALYTICAL CHEMISTRY

收录：;EI(收录号：20194907791318);WOS:【SCI-EXPANDED(收录号:WOS:000514251800044)】；

基金：This work is supported by Shanghai Nanotechnology Special Foundation (No. 11nm0500900), Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500). H. L and B.Q. gratefully acknowledge the financial support from Chinese Scholarship Council. H.Z. specially acknowledges the financial support from the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Lithium-ion batteries; Tin oxide nanodots; Biomass-derived carbon; Nano confinement

摘要：Biomass-derived carbon has been intensively investigated as conductive matrix for conversion and alloying-type anodes in batteries. In this work. SnO2 nanodots incorporated in wood flour-derived porous carbon (WFPC) are synthesized through a hydrothermal method combined carbonization treatment. As anodes in lithium-ion batteries, the fabricated SnO2/WFPC composites deliver a high initial reversible capacity of 1014.4 mAh g(-1) at 156 mA g(-1) and exhibit superior rate performance (370 mAh g(-1) at 783 mA g(-1)) with capacity retention of 82% after 250 cycles. The improved electrochemical performance can be ascribed to the nanoconfined SnO2 particles embedded in porous conductive carbon with shortened Li+ diffusion length, easy access of electrolyte, and high mechanical integrity, suggesting an efficient way to design high performance electrode materials for batteries. (C) 2019 Published by Elsevier B.V.