Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte

Jingwen Yao; Feng Wu; Borong Wu; Xinping Qiu; Chunwei Yang; Ning Li

Electrochemical performance and kinetics of LiFePO₄/C cathode in a low-temperature electrolyte

Jingwen Yao, Feng Wu, Borong Wu^*, Xinping Qiu, Chunwei Yang, Ning Li

^*此作品的通讯作者

材料学院

科研成果: 会议稿件 › 论文 › 同行评审

摘要

The electrochemical performance of LiFePO₄/C cathode in a carbonate-based electrolyte (1.0M LiPF₆/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20°C), 141.4mAh/g (-10°C) and 112.9mAh/g (-20°C) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO ₄/C cathode was determined at different temperatures using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The analyses demonstrate that the sluggish of charge-transfer reaction on the LiFePO ₄/C-electrolyte interface and the dramatic decrease in lithium ion diffusivity in the bulk LiFePO₄/C material were the key performance limiting factors at low temperature.

源语言	英语
出版状态	已出版 - 2010
活动	25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010 - Shenzhen, 中国期限: 5 11月 2010 → 9 11月 2010

会议

会议	25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010
国家/地区	中国
市	Shenzhen
时期	5/11/10 → 9/11/10

联合国可持续发展目标

此成果有助于实现下列可持续发展目标：

其它文件与链接

链接到 Scopus 的出版物

引用此

@conference{bc8831c3d74148479521d02a7271a57b,

title = "Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte",

abstract = "The electrochemical performance of LiFePO4/C cathode in a carbonate-based electrolyte (1.0M LiPF6/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20°C), 141.4mAh/g (-10°C) and 112.9mAh/g (-20°C) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO 4/C cathode was determined at different temperatures using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The analyses demonstrate that the sluggish of charge-transfer reaction on the LiFePO 4/C-electrolyte interface and the dramatic decrease in lithium ion diffusivity in the bulk LiFePO4/C material were the key performance limiting factors at low temperature.",

keywords = "Fluoroethylene carbonate, Lithium ion batteries, Low-temperature electrolyte",

author = "Jingwen Yao and Feng Wu and Borong Wu and Xinping Qiu and Chunwei Yang and Ning Li",

year = "2010",

language = "English",

note = "25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010 ; Conference date: 05-11-2010 Through 09-11-2010",

}

TY - CONF

T1 - Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte

AU - Yao, Jingwen

AU - Wu, Feng

AU - Wu, Borong

AU - Qiu, Xinping

AU - Yang, Chunwei

AU - Li, Ning

PY - 2010

Y1 - 2010

N2 - The electrochemical performance of LiFePO4/C cathode in a carbonate-based electrolyte (1.0M LiPF6/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20°C), 141.4mAh/g (-10°C) and 112.9mAh/g (-20°C) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO 4/C cathode was determined at different temperatures using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The analyses demonstrate that the sluggish of charge-transfer reaction on the LiFePO 4/C-electrolyte interface and the dramatic decrease in lithium ion diffusivity in the bulk LiFePO4/C material were the key performance limiting factors at low temperature.

AB - The electrochemical performance of LiFePO4/C cathode in a carbonate-based electrolyte (1.0M LiPF6/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20°C), 141.4mAh/g (-10°C) and 112.9mAh/g (-20°C) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO 4/C cathode was determined at different temperatures using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The analyses demonstrate that the sluggish of charge-transfer reaction on the LiFePO 4/C-electrolyte interface and the dramatic decrease in lithium ion diffusivity in the bulk LiFePO4/C material were the key performance limiting factors at low temperature.

KW - Fluoroethylene carbonate

KW - Lithium ion batteries

KW - Low-temperature electrolyte

UR - http://www.scopus.com/inward/record.url?scp=85081812877&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85081812877

T2 - 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010

Y2 - 5 November 2010 through 9 November 2010

ER -

Electrochemical performance and kinetics of LiFePO4/C cathode in a low-temperature electrolyte

摘要

会议

联合国可持续发展目标

其它文件与链接

指纹

引用此

Electrochemical performance and kinetics of LiFePO₄/C cathode in a low-temperature electrolyte