Stabilizing the Nanostructure of SnO2 Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage

Renzong Hu; Yunpeng Ouyang; Tao Liang; Hui Wang; Jun Liu; Jun Chen; Chenghao Yang; Liuchun Yang; Min Zhu

doi:10.1002/adma.201605006

Stabilizing the Nanostructure of SnO₂ Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage

Adv Mater. 2017 Apr;29(13). doi: 10.1002/adma.201605006. Epub 2017 Feb 10.

Authors

Renzong Hu¹, Yunpeng Ouyang¹, Tao Liang¹, Hui Wang¹, Jun Liu¹, Jun Chen², Chenghao Yang³, Liuchun Yang¹, Min Zhu¹

Affiliations

¹ Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
² Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin, 300071, China.
³ School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.

PMID: 28185334
DOI: 10.1002/adma.201605006

Abstract

To dramatically stabilize the nanostructure of Sn and achieve ultrahigh reversibility of conversion reactions in lithiated SnO₂ , a series of SnO₂ -transition metal-graphite ternary nanocomposites are produced by ball milling, demonstrating high initial Coulombic efficiencies up to 88.6%, high reversible capacity (>700 mAh g^-1 at 2 A g^-1 ), and ultralong cycling life (90.3% of capacity retention after 1300 cycles).

Keywords: conversion reactions; initial coulombic efficiency; tin coarsening; tin dioxide anodes; transition metals.