VO2(B)/graphene forest for high-rate Li-ion battery

Guofeng Ren, Zhaoyang Fan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

2D nanomaterials, when assembled into an ordered macrostructure, will present many great opportunities, including for Li-ion batteries (LIBs). We report densely-packed vertically-aligned V02(B) nanobelts (NBs)-based forest structure synthesized on edge-oriented graphene (EOG) network Using a EOG/Ni foam as a 3D scaffold, aligned VO2(B) NBs can be further synthesized into a folded 3D forest structure to construct a freestanding electrode for LIBs. Electrochemical studies found that such a freestanding V02(B)/EOG electrode, which combines the unique merits of 2D V02(B) NBs and 2D graphene sheets, has excellent charge-discharge rate performance. A discharge capacity of 178 mAh g-1 at a rate of 59 C and 100 mAh g-1 at 300 C was measured. A good charge-discharge cycling stability under a high current density was also demonstrated. The results indicate V02(B)/EOG forest based freestanding electrode is very promising for developing high-rate LIBs.

Original languageEnglish (US)
Title of host publicationNext Generation Electrochemical Energy Storage and Conversion Systems - Synthesis, Processing, Characterization and Manufacturing
EditorsHarun Tuysuz, Candace K. Chan, Anne Co, Hui Xiong
PublisherMaterials Research Society
Pages7-14
Number of pages8
ISBN (Electronic)9781510826281
DOIs
StatePublished - 2015
Externally publishedYes
Event2015 MRS Spring Meeting - San Francisco, United States
Duration: Apr 6 2015Apr 10 2015

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1773
ISSN (Print)0272-9172

Other

Other2015 MRS Spring Meeting
CountryUnited States
CitySan Francisco
Period4/6/154/10/15

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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