Synthesis of Co2V2O7 Hollow Cylinders with Enhanced Lithium Storage Properties using H2O2 as an Etching Agent

Jinli Wang; Jian Pei; Ke Hua; Dahong Chen; Yang Jiao; Yongyuan Hu; Gang Chen

doi:10.1002/celc.201701194

Synthesis of Co₂V₂O₇ Hollow Cylinders with Enhanced Lithium Storage Properties using H₂O₂ as an Etching Agent

Jinli Wang
, Jian Pei^*
, Ke Hua
, Dahong Chen
, Yang Jiao
, Yongyuan Hu
, Gang Chen

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The construction of hollow structures has been used as an efficient strategy to improve electrochemical properties in lithium-ion batteries (LIBs). In this paper, novel Co₂V₂O₇ hollow cylinders have been fabricated via a unique etching process, in which H₂O₂ and CO(NH₂)₂ were selected as the etching agent and the release rate controlling agent, respectively. The formation process for the hollow structure and the etching mechanism have been investigated. Benefiting from the improved diffusion and transport of Li⁺, the Co₂V₂O₇ hollow cylinder electrode demonstrates higher electrochemical performance as an anode material for LIBs than that of Co₂V₂O₇ solid hexagonal prisms. Under a current density of 0.4 A g⁻¹, the cycling capacity can be improved to 2.5 times greater than that of non-etched hexagonal prisms.

Original language	English
Pages (from-to)	737-742
Number of pages	6
Journal	ChemElectroChem
Volume	5
Issue number	5
DOIs	https://doi.org/10.1002/celc.201701194
State	Published - Mar 2018
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CoVO hollow cylinders
HO etching process
formation mechanism
lithium-ion batteries

Access to Document

10.1002/celc.201701194

Cite this

@article{d3c26ade462d4ee5895fe2ff4a10f714,

title = "Synthesis of Co2V2O7 Hollow Cylinders with Enhanced Lithium Storage Properties using H2O2 as an Etching Agent",

abstract = "The construction of hollow structures has been used as an efficient strategy to improve electrochemical properties in lithium-ion batteries (LIBs). In this paper, novel Co2V2O7 hollow cylinders have been fabricated via a unique etching process, in which H2O2 and CO(NH2)2 were selected as the etching agent and the release rate controlling agent, respectively. The formation process for the hollow structure and the etching mechanism have been investigated. Benefiting from the improved diffusion and transport of Li+, the Co2V2O7 hollow cylinder electrode demonstrates higher electrochemical performance as an anode material for LIBs than that of Co2V2O7 solid hexagonal prisms. Under a current density of 0.4 A g−1, the cycling capacity can be improved to 2.5 times greater than that of non-etched hexagonal prisms.",

keywords = "CoVO hollow cylinders, HO etching process, formation mechanism, lithium-ion batteries",

author = "Jinli Wang and Jian Pei and Ke Hua and Dahong Chen and Yang Jiao and Yongyuan Hu and Gang Chen",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2018",

month = mar,

doi = "10.1002/celc.201701194",

language = "英语",

volume = "5",

pages = "737--742",

journal = "ChemElectroChem",

issn = "2196-0216",

publisher = "John Wiley and Sons Ltd",

number = "5",

}

TY - JOUR

T1 - Synthesis of Co2V2O7 Hollow Cylinders with Enhanced Lithium Storage Properties using H2O2 as an Etching Agent

AU - Wang, Jinli

AU - Pei, Jian

AU - Hua, Ke

AU - Chen, Dahong

AU - Jiao, Yang

AU - Hu, Yongyuan

AU - Chen, Gang

PY - 2018/3

Y1 - 2018/3

N2 - The construction of hollow structures has been used as an efficient strategy to improve electrochemical properties in lithium-ion batteries (LIBs). In this paper, novel Co2V2O7 hollow cylinders have been fabricated via a unique etching process, in which H2O2 and CO(NH2)2 were selected as the etching agent and the release rate controlling agent, respectively. The formation process for the hollow structure and the etching mechanism have been investigated. Benefiting from the improved diffusion and transport of Li+, the Co2V2O7 hollow cylinder electrode demonstrates higher electrochemical performance as an anode material for LIBs than that of Co2V2O7 solid hexagonal prisms. Under a current density of 0.4 A g−1, the cycling capacity can be improved to 2.5 times greater than that of non-etched hexagonal prisms.

AB - The construction of hollow structures has been used as an efficient strategy to improve electrochemical properties in lithium-ion batteries (LIBs). In this paper, novel Co2V2O7 hollow cylinders have been fabricated via a unique etching process, in which H2O2 and CO(NH2)2 were selected as the etching agent and the release rate controlling agent, respectively. The formation process for the hollow structure and the etching mechanism have been investigated. Benefiting from the improved diffusion and transport of Li+, the Co2V2O7 hollow cylinder electrode demonstrates higher electrochemical performance as an anode material for LIBs than that of Co2V2O7 solid hexagonal prisms. Under a current density of 0.4 A g−1, the cycling capacity can be improved to 2.5 times greater than that of non-etched hexagonal prisms.

KW - CoVO hollow cylinders

KW - HO etching process

KW - formation mechanism

KW - lithium-ion batteries

UR - https://www.scopus.com/pages/publications/85040610893

U2 - 10.1002/celc.201701194

DO - 10.1002/celc.201701194

M3 - 文章

AN - SCOPUS:85040610893

SN - 2196-0216

VL - 5

SP - 737

EP - 742

JO - ChemElectroChem

JF - ChemElectroChem

IS - 5

ER -