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

doi:10.3390/wevj4020396

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

^*Corresponding author for this work

Tsinghua University
Beijing Institute of Technology

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

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^oC), 141.4mAh/g (-10^oC) and 112.9mAh/g (-20^oC) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO4/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 LiFePO4/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.

Original language	English
Pages (from-to)	396-399
Number of pages	4
Journal	World Electric Vehicle Journal
Volume	4
Issue number	1
DOIs	https://doi.org/10.3390/wevj4020396
Publication status	Published - 2011
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Fluoroethylene carbonate
Lithium ion batteries
Low-temperature electrolyte

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10.3390/wevj4020396

Cite this

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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 (20oC), 141.4mAh/g (-10oC) and 112.9mAh/g (-20oC) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO4/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 LiFePO4/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 = "2011",

doi = "10.3390/wevj4020396",

language = "English",

volume = "4",

pages = "396--399",

journal = "World Electric Vehicle Journal",

issn = "2032-6653",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "1",

}

TY - JOUR

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 - 2011

Y1 - 2011

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 (20oC), 141.4mAh/g (-10oC) and 112.9mAh/g (-20oC) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO4/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 LiFePO4/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 (20oC), 141.4mAh/g (-10oC) and 112.9mAh/g (-20oC) at 0.1C charge-discharge rate. The electrode kinetics of LiFePO4/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 LiFePO4/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 - https://www.scopus.com/pages/publications/84867955032

U2 - 10.3390/wevj4020396

DO - 10.3390/wevj4020396

M3 - Article

AN - SCOPUS:84867955032

SN - 2032-6653

VL - 4

SP - 396

EP - 399

JO - World Electric Vehicle Journal

JF - World Electric Vehicle Journal

IS - 1

ER -

Electrochemical performance and kinetics of lifepo4/C cathode in a low-temperature electrolyte

Abstract

UN SDGs

Keywords

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