Caging tin oxide in three-dimensional graphene networks for superior volumetric lithium storage

Tin and its compounds hold promise for the development of high-capacity anode materials that could replace graphitic carbon used in current lithium-ion batteries. However, the introduced porosity in current electrode designs to buffer the volume changes of active materials during cycling does not af...

Full description

Saved in:
Bibliographic Details
Published in:Nature communications 2018-01, Vol.9 (1), p.402-9, Article 402
Main Authors: Han, Junwei, Kong, Debin, Lv, Wei, Tang, Dai-Ming, Han, Daliang, Zhang, Chao, Liu, Donghai, Xiao, Zhichang, Zhang, Xinghao, Xiao, Jing, He, Xinzi, Hsia, Feng-Chun, Zhang, Chen, Tao, Ying, Golberg, Dmitri, Kang, Feiyu, Zhi, Linjie, Yang, Quan-Hong
Format: Article
Language:English
Subjects:
140/133
140/146
147/135
147/137
147/143
639/301/299/891
639/4077/4079/891
Anodes
Batteries
Contraction
Cycles
Drying
Electrochemistry
Electrode materials
Energy storage
Graphene
Humanities and Social Sciences
Hydrogels
Lithium
Lithium-ion batteries
multidisciplinary
Nanoparticles
Packing density
Porosity
Rechargeable batteries
Science
Science (multidisciplinary)
Sulfur
Tin
Tin oxide
Tin oxides
Void space
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Tin and its compounds hold promise for the development of high-capacity anode materials that could replace graphitic carbon used in current lithium-ion batteries. However, the introduced porosity in current electrode designs to buffer the volume changes of active materials during cycling does not afford high volumetric performance. Here, we show a strategy leveraging a sulfur sacrificial agent for controlled utility of void space in a tin oxide/graphene composite anode. In a typical synthesis using the capillary drying of graphene hydrogels, sulfur is employed with hard tin oxide nanoparticles inside the contraction hydrogels. The resultant graphene-caged tin oxide delivers an ultrahigh volumetric capacity of 2123 mAh cm –3 together with good cycling stability. Our results suggest not only a conversion-type composite anode that allows for good electrochemical characteristics, but also a general synthetic means to engineering the packing density of graphene nanosheets for high energy storage capabilities in small volumes. The excessive porous space in carbon anodes for lithium-ion batteries has to be utilized for high volumetric performance. Here the authors show an adaptable sulfur template strategy to yield graphene-caged noncarbon materials with a precisely controlled amount of void, enabling ultrahigh volumetric lithium storage.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-017-02808-2