Mixed lithium ion and electron conducting LiAlPO3.93F1.07-coated LiCoO2 cathode with improved electrochemical performance

Bin Shen; Qianqian Liu; Liguang Wang; Geping Yin; Pengjian Zuo; Yulin Ma; Xinqun Cheng; Chunyu Du; Yunzhi Gao

doi:10.1016/j.elecom.2017.09.002

Mixed lithium ion and electron conducting LiAlPO_3.93F_1.07-coated LiCoO₂ cathode with improved electrochemical performance

Bin Shen
, Qianqian Liu
, Liguang Wang
, Geping Yin^*
, Pengjian Zuo
, Yulin Ma
, Xinqun Cheng
, Chunyu Du
, Yunzhi Gao

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

37 Scopus citations

Abstract

LiCoO₂ (LCO) has been functionally modified by mixed lithium ion and electron conducting LiAlPO_3.93F_1.07 (LAPF) for the first time. Due to the unique coating layer with accepted Li-ion diffusion rate and electronic conductivity, the LAPF-coated LCO exhibits outstanding rate capability and cycle stability in the voltage range of 2.75–4.55 V. This material delivered a specific capacity of 206 mAh·g^{− 1} up to 0.5C rate and the capacity retention was 91.7% after 50 cycles, which is a remarkable improvement comparing with uncoated LCO (34.8%). It also exhibited superior rate capability with a discharge capacity of 161.4 mAh·g^{− 1} at 4C. The functionalized LAPF coating technique is an efficient approach to improve the electrochemical performance of LCO and can also be referred for other layered oxide cathode materials.

Original language	English
Pages (from-to)	106-109
Number of pages	4
Journal	Electrochemistry Communications
Volume	83
DOIs	https://doi.org/10.1016/j.elecom.2017.09.002
State	Published - Oct 2017
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Lithium cobalt oxide
Lithium ion battery
Mixed Li ionic and electronic conductor
Surface coating

Access to Document

10.1016/j.elecom.2017.09.002

Cite this

@article{080a3ab9dd6d414684ac6b214bde50b8,

title = "Mixed lithium ion and electron conducting LiAlPO3.93F1.07-coated LiCoO2 cathode with improved electrochemical performance",

abstract = "LiCoO2 (LCO) has been functionally modified by mixed lithium ion and electron conducting LiAlPO3.93F1.07 (LAPF) for the first time. Due to the unique coating layer with accepted Li-ion diffusion rate and electronic conductivity, the LAPF-coated LCO exhibits outstanding rate capability and cycle stability in the voltage range of 2.75–4.55 V. This material delivered a specific capacity of 206 mAh·g− 1 up to 0.5C rate and the capacity retention was 91.7\% after 50 cycles, which is a remarkable improvement comparing with uncoated LCO (34.8\%). It also exhibited superior rate capability with a discharge capacity of 161.4 mAh·g− 1 at 4C. The functionalized LAPF coating technique is an efficient approach to improve the electrochemical performance of LCO and can also be referred for other layered oxide cathode materials.",

keywords = "Lithium cobalt oxide, Lithium ion battery, Mixed Li ionic and electronic conductor, Surface coating",

author = "Bin Shen and Qianqian Liu and Liguang Wang and Geping Yin and Pengjian Zuo and Yulin Ma and Xinqun Cheng and Chunyu Du and Yunzhi Gao",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = oct,

doi = "10.1016/j.elecom.2017.09.002",

language = "英语",

volume = "83",

pages = "106--109",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Mixed lithium ion and electron conducting LiAlPO3.93F1.07-coated LiCoO2 cathode with improved electrochemical performance

AU - Shen, Bin

AU - Liu, Qianqian

AU - Wang, Liguang

AU - Yin, Geping

AU - Zuo, Pengjian

AU - Ma, Yulin

AU - Cheng, Xinqun

AU - Du, Chunyu

AU - Gao, Yunzhi

PY - 2017/10

Y1 - 2017/10

N2 - LiCoO2 (LCO) has been functionally modified by mixed lithium ion and electron conducting LiAlPO3.93F1.07 (LAPF) for the first time. Due to the unique coating layer with accepted Li-ion diffusion rate and electronic conductivity, the LAPF-coated LCO exhibits outstanding rate capability and cycle stability in the voltage range of 2.75–4.55 V. This material delivered a specific capacity of 206 mAh·g− 1 up to 0.5C rate and the capacity retention was 91.7% after 50 cycles, which is a remarkable improvement comparing with uncoated LCO (34.8%). It also exhibited superior rate capability with a discharge capacity of 161.4 mAh·g− 1 at 4C. The functionalized LAPF coating technique is an efficient approach to improve the electrochemical performance of LCO and can also be referred for other layered oxide cathode materials.

AB - LiCoO2 (LCO) has been functionally modified by mixed lithium ion and electron conducting LiAlPO3.93F1.07 (LAPF) for the first time. Due to the unique coating layer with accepted Li-ion diffusion rate and electronic conductivity, the LAPF-coated LCO exhibits outstanding rate capability and cycle stability in the voltage range of 2.75–4.55 V. This material delivered a specific capacity of 206 mAh·g− 1 up to 0.5C rate and the capacity retention was 91.7% after 50 cycles, which is a remarkable improvement comparing with uncoated LCO (34.8%). It also exhibited superior rate capability with a discharge capacity of 161.4 mAh·g− 1 at 4C. The functionalized LAPF coating technique is an efficient approach to improve the electrochemical performance of LCO and can also be referred for other layered oxide cathode materials.

KW - Lithium cobalt oxide

KW - Lithium ion battery

KW - Mixed Li ionic and electronic conductor

KW - Surface coating

UR - https://www.scopus.com/pages/publications/85029516621

U2 - 10.1016/j.elecom.2017.09.002

DO - 10.1016/j.elecom.2017.09.002

M3 - 文章

AN - SCOPUS:85029516621

SN - 1388-2481

VL - 83

SP - 106

EP - 109

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -