Engineering two-dimensional pores in freestanding TiO2/graphene gel film for high performance lithium ion battery

Xiaojun Yan; Yuanyuan Wang; Congcong Liu; Min Guo; Jingying Tao; Jing Cao; Dongju Fu; Liyi Dai; Xiaowei Yang

doi:10.1016/j.jechem.2017.11.001

Engineering two-dimensional pores in freestanding TiO₂/graphene gel film for high performance lithium ion battery

Xiaojun Yan
, Yuanyuan Wang^*
, Congcong Liu
, Min Guo
, Jingying Tao
, Jing Cao
, Dongju Fu
, Liyi Dai
, Xiaowei Yang

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

16 Scopus citations

Abstract

As the key component of electrochemical energy storage devices, an electrode with superior ions transport pores is the important premise for high electrochemical performance. In this paper, we developed a unique solution process to prepare freestanding TiO₂/graphene hydrogel electrode with tunable density and porous structures. By incorporating room temperature ionic liquids (RTILs), even upon drying, the non-volatile RTILs that remained in the gel film would preserve the efficient ion transport channels and prevent the electrode from closely stacking, to develop dense yet porous structures. As a result, the dense TiO₂/graphene gel film as an electrode for lithium ion battery displayed a good gravimetric electrochemical performance and more importantly a high volumetric performance.

Original language	English
Pages (from-to)	176-182
Number of pages	7
Journal	Journal of Energy Chemistry
Volume	27
Issue number	1
DOIs	https://doi.org/10.1016/j.jechem.2017.11.001
State	Published - 1 Jan 2018

Keywords

Ions transport channels
Lithium ion battery
Pore engineering
TiO/graphene gel electrode
Volumetric performance

UN SDGs

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

Access to Document

10.1016/j.jechem.2017.11.001

Cite this

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title = "Engineering two-dimensional pores in freestanding TiO2/graphene gel film for high performance lithium ion battery",

abstract = "As the key component of electrochemical energy storage devices, an electrode with superior ions transport pores is the important premise for high electrochemical performance. In this paper, we developed a unique solution process to prepare freestanding TiO2/graphene hydrogel electrode with tunable density and porous structures. By incorporating room temperature ionic liquids (RTILs), even upon drying, the non-volatile RTILs that remained in the gel film would preserve the efficient ion transport channels and prevent the electrode from closely stacking, to develop dense yet porous structures. As a result, the dense TiO2/graphene gel film as an electrode for lithium ion battery displayed a good gravimetric electrochemical performance and more importantly a high volumetric performance.",

keywords = "Ions transport channels, Lithium ion battery, Pore engineering, TiO/graphene gel electrode, Volumetric performance",

author = "Xiaojun Yan and Yuanyuan Wang and Congcong Liu and Min Guo and Jingying Tao and Jing Cao and Dongju Fu and Liyi Dai and Xiaowei Yang",

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T1 - Engineering two-dimensional pores in freestanding TiO2/graphene gel film for high performance lithium ion battery

AU - Yan, Xiaojun

AU - Wang, Yuanyuan

AU - Liu, Congcong

AU - Guo, Min

AU - Tao, Jingying

AU - Cao, Jing

AU - Fu, Dongju

AU - Dai, Liyi

AU - Yang, Xiaowei

PY - 2018/1/1

Y1 - 2018/1/1

N2 - As the key component of electrochemical energy storage devices, an electrode with superior ions transport pores is the important premise for high electrochemical performance. In this paper, we developed a unique solution process to prepare freestanding TiO2/graphene hydrogel electrode with tunable density and porous structures. By incorporating room temperature ionic liquids (RTILs), even upon drying, the non-volatile RTILs that remained in the gel film would preserve the efficient ion transport channels and prevent the electrode from closely stacking, to develop dense yet porous structures. As a result, the dense TiO2/graphene gel film as an electrode for lithium ion battery displayed a good gravimetric electrochemical performance and more importantly a high volumetric performance.

AB - As the key component of electrochemical energy storage devices, an electrode with superior ions transport pores is the important premise for high electrochemical performance. In this paper, we developed a unique solution process to prepare freestanding TiO2/graphene hydrogel electrode with tunable density and porous structures. By incorporating room temperature ionic liquids (RTILs), even upon drying, the non-volatile RTILs that remained in the gel film would preserve the efficient ion transport channels and prevent the electrode from closely stacking, to develop dense yet porous structures. As a result, the dense TiO2/graphene gel film as an electrode for lithium ion battery displayed a good gravimetric electrochemical performance and more importantly a high volumetric performance.

KW - Ions transport channels

KW - Lithium ion battery

KW - Pore engineering

KW - TiO/graphene gel electrode

KW - Volumetric performance

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