Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries

Jinpeng Yu; Zenghui Han; Xiaohong Hu; Hui Zhan; Yunhong Zhou; Xingjiang Liu

doi:10.1016/j.jpowsour.2012.09.050

Solid-state synthesis of LiCoO₂/LiCo_0.99Ti _0.01O₂ composite as cathode material for lithium ion batteries

Jinpeng Yu, Zenghui Han, Xiaohong Hu, Hui Zhan^*, Yunhong Zhou, Xingjiang Liu

^*Corresponding author for this work

Research Organization for Nano & Life Innovation

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

28 Citations (Scopus)

Abstract

We have fabricated a micron-sized LiCoO₂/LiCo _0.99Ti_0.01O₂ composite successfully by solid-phase synthesis, its core-shell structure has been proved by SEM and XPS observation. Electrochemical examinations show that comparing with LiCoO ₂ and LiCo_0.99Ti_0.01O₂, the obtained LiCoO₂/LiCo_0.99Ti_0.01O₂ composite presents greatly enhanced cycling stability as well as rate capability. In addition, DSC measurement indicates that LiCoO₂/LiCo _0.99Ti_0.01O₂ has a better thermal safety than LiCoO₂. It is considered that all the improvement should be explained by the particular core-shell morphology of the LiCoO₂/LiCo _0.99Ti_0.01O₂ sample.

Original language	English
Pages (from-to)	34-39
Number of pages	6
Journal	Journal of Power Sources
Volume	225
DOIs	https://doi.org/10.1016/j.jpowsour.2012.09.050
Publication status	Published - 2013 Mar 1

Keywords

Core-shell structure
Layered compound
Lithium batteries
Solid-phase synthesis

ASJC Scopus subject areas

Electrical and Electronic Engineering
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Physical and Theoretical Chemistry

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2012.09.050

Cite this

@article{009828428cc34555b1b0f2ec45bf8897,

title = "Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries",

abstract = "We have fabricated a micron-sized LiCoO2/LiCo 0.99Ti0.01O2 composite successfully by solid-phase synthesis, its core-shell structure has been proved by SEM and XPS observation. Electrochemical examinations show that comparing with LiCoO 2 and LiCo0.99Ti0.01O2, the obtained LiCoO2/LiCo0.99Ti0.01O2 composite presents greatly enhanced cycling stability as well as rate capability. In addition, DSC measurement indicates that LiCoO2/LiCo 0.99Ti0.01O2 has a better thermal safety than LiCoO2. It is considered that all the improvement should be explained by the particular core-shell morphology of the LiCoO2/LiCo 0.99Ti0.01O2 sample.",

keywords = "Core-shell structure, Layered compound, Lithium batteries, Solid-phase synthesis",

author = "Jinpeng Yu and Zenghui Han and Xiaohong Hu and Hui Zhan and Yunhong Zhou and Xingjiang Liu",

year = "2013",

month = mar,

day = "1",

doi = "10.1016/j.jpowsour.2012.09.050",

language = "English",

volume = "225",

pages = "34--39",

journal = "Journal of Power Sources",

issn = "0378-7753",

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TY - JOUR

T1 - Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries

AU - Yu, Jinpeng

AU - Han, Zenghui

AU - Hu, Xiaohong

AU - Zhan, Hui

AU - Zhou, Yunhong

AU - Liu, Xingjiang

PY - 2013/3/1

Y1 - 2013/3/1

N2 - We have fabricated a micron-sized LiCoO2/LiCo 0.99Ti0.01O2 composite successfully by solid-phase synthesis, its core-shell structure has been proved by SEM and XPS observation. Electrochemical examinations show that comparing with LiCoO 2 and LiCo0.99Ti0.01O2, the obtained LiCoO2/LiCo0.99Ti0.01O2 composite presents greatly enhanced cycling stability as well as rate capability. In addition, DSC measurement indicates that LiCoO2/LiCo 0.99Ti0.01O2 has a better thermal safety than LiCoO2. It is considered that all the improvement should be explained by the particular core-shell morphology of the LiCoO2/LiCo 0.99Ti0.01O2 sample.

AB - We have fabricated a micron-sized LiCoO2/LiCo 0.99Ti0.01O2 composite successfully by solid-phase synthesis, its core-shell structure has been proved by SEM and XPS observation. Electrochemical examinations show that comparing with LiCoO 2 and LiCo0.99Ti0.01O2, the obtained LiCoO2/LiCo0.99Ti0.01O2 composite presents greatly enhanced cycling stability as well as rate capability. In addition, DSC measurement indicates that LiCoO2/LiCo 0.99Ti0.01O2 has a better thermal safety than LiCoO2. It is considered that all the improvement should be explained by the particular core-shell morphology of the LiCoO2/LiCo 0.99Ti0.01O2 sample.

KW - Core-shell structure

KW - Layered compound

KW - Lithium batteries

KW - Solid-phase synthesis

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