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Title: Engineering the surface of LiCoO 2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries

Abstract

Here, developing advanced technologies to stabilize positive electrodes of lithium ion batteries under high-voltage operation is becoming increasingly important, owing to the potential to achieve substantially enhanced energy density for applications such as portable electronics and electrical vehicles. Here, we deposited chemically inert and ionically conductive LiAlO 2 interfacial layers on LiCoO 2 electrodes using the atomic layer deposition technique. During prolonged cycling at high-voltage, the LiAlO 2 coating not only prevented interfacial reactions between the LiCoO 2 electrode and electrolyte, as confirmed by electrochemical impedance spectroscopy and Raman characterizations, but also allowed lithium ions to freely diffuse into LiCoO 2 without sacrificing the power density. As a result, a capacity value close to 200 mA·h·g –1 was achieved for the LiCoO 2 electrodes with commercial level loading densities, cycled at the cut-off potential of 4.6 V vs. Li +/Li for 50 stable cycles; this represents a 40% capacity gain, compared with the values obtained for commercial samples cycled at the cut-off potential of 4.2 V vs. Li +/Li.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Stanford Univ., Stanford, CA (United States)
  2. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1419766
Grant/Contract Number:
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Research
Additional Journal Information:
Journal Volume: 10; Journal Issue: 11; Journal ID: ISSN 1998-0124
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; lithium ion batteries; lithium cobalt oxide; atomic layer deposition

Citation Formats

Xie, Jin, Zhao, Jie, Liu, Yayuan, Wang, Haotian, Liu, Chong, Wu, Tong, Hsu, Po -Chun, Lin, Dingchang, Jin, Yang, and Cui, Yi. Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries. United States: N. p., 2017. Web. doi:10.1007/s12274-017-1588-1.
Xie, Jin, Zhao, Jie, Liu, Yayuan, Wang, Haotian, Liu, Chong, Wu, Tong, Hsu, Po -Chun, Lin, Dingchang, Jin, Yang, & Cui, Yi. Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries. United States. doi:10.1007/s12274-017-1588-1.
Xie, Jin, Zhao, Jie, Liu, Yayuan, Wang, Haotian, Liu, Chong, Wu, Tong, Hsu, Po -Chun, Lin, Dingchang, Jin, Yang, and Cui, Yi. 2017. "Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries". United States. doi:10.1007/s12274-017-1588-1.
@article{osti_1419766,
title = {Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries},
author = {Xie, Jin and Zhao, Jie and Liu, Yayuan and Wang, Haotian and Liu, Chong and Wu, Tong and Hsu, Po -Chun and Lin, Dingchang and Jin, Yang and Cui, Yi},
abstractNote = {Here, developing advanced technologies to stabilize positive electrodes of lithium ion batteries under high-voltage operation is becoming increasingly important, owing to the potential to achieve substantially enhanced energy density for applications such as portable electronics and electrical vehicles. Here, we deposited chemically inert and ionically conductive LiAlO2 interfacial layers on LiCoO2 electrodes using the atomic layer deposition technique. During prolonged cycling at high-voltage, the LiAlO2 coating not only prevented interfacial reactions between the LiCoO2 electrode and electrolyte, as confirmed by electrochemical impedance spectroscopy and Raman characterizations, but also allowed lithium ions to freely diffuse into LiCoO2 without sacrificing the power density. As a result, a capacity value close to 200 mA·h·g–1 was achieved for the LiCoO2 electrodes with commercial level loading densities, cycled at the cut-off potential of 4.6 V vs. Li+/Li for 50 stable cycles; this represents a 40% capacity gain, compared with the values obtained for commercial samples cycled at the cut-off potential of 4.2 V vs. Li+/Li.},
doi = {10.1007/s12274-017-1588-1},
journal = {Nano Research},
number = 11,
volume = 10,
place = {United States},
year = 2017,
month = 7
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 25, 2018
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