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Title: Atomic Layer Deposition of Stable LiAlF 4 Lithium Ion Conductive Interfacial Layer for Stable Cathode Cycling

Authors:
ORCiD logo; ; ; ; ; ; ; ORCiD logo; ORCiD logo; ;  [1]
  1. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1390310
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Nano; Journal Volume: 11; Journal Issue: 7
Country of Publication:
United States
Language:
English

Citation Formats

Xie, Jin, Sendek, Austin D., Cubuk, Ekin D., Zhang, Xiaokun, Lu, Zhiyi, Gong, Yongji, Wu, Tong, Shi, Feifei, Liu, Wei, Reed, Evan J., and Cui, Yi. Atomic Layer Deposition of Stable LiAlF 4 Lithium Ion Conductive Interfacial Layer for Stable Cathode Cycling. United States: N. p., 2017. Web. doi:10.1021/acsnano.7b02561.
Xie, Jin, Sendek, Austin D., Cubuk, Ekin D., Zhang, Xiaokun, Lu, Zhiyi, Gong, Yongji, Wu, Tong, Shi, Feifei, Liu, Wei, Reed, Evan J., & Cui, Yi. Atomic Layer Deposition of Stable LiAlF 4 Lithium Ion Conductive Interfacial Layer for Stable Cathode Cycling. United States. doi:10.1021/acsnano.7b02561.
Xie, Jin, Sendek, Austin D., Cubuk, Ekin D., Zhang, Xiaokun, Lu, Zhiyi, Gong, Yongji, Wu, Tong, Shi, Feifei, Liu, Wei, Reed, Evan J., and Cui, Yi. Wed . "Atomic Layer Deposition of Stable LiAlF 4 Lithium Ion Conductive Interfacial Layer for Stable Cathode Cycling". United States. doi:10.1021/acsnano.7b02561.
@article{osti_1390310,
title = {Atomic Layer Deposition of Stable LiAlF 4 Lithium Ion Conductive Interfacial Layer for Stable Cathode Cycling},
author = {Xie, Jin and Sendek, Austin D. and Cubuk, Ekin D. and Zhang, Xiaokun and Lu, Zhiyi and Gong, Yongji and Wu, Tong and Shi, Feifei and Liu, Wei and Reed, Evan J. and Cui, Yi},
abstractNote = {},
doi = {10.1021/acsnano.7b02561},
journal = {ACS Nano},
number = 7,
volume = 11,
place = {United States},
year = {Wed Jul 05 00:00:00 EDT 2017},
month = {Wed Jul 05 00:00:00 EDT 2017}
}
  • 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 LiCoOmore » 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.« less
    Cited by 1
  • The effect of Li{sub 4}Ti{sub 5}O{sub 12} (LTO) coating amount on the electrochemical cycling behavior of the LiCoO{sub 2} cathode was investigated at the high upper voltage limit of 4.5 V. Li{sub 4}Ti{sub 5}O{sub 12} ({<=}5 wt.%) is not incorporated into the host structure and leads to formation of uniform coating. The cycling performance of LiCoO{sub 2} cathode is related with the amount of Li{sub 4}Ti{sub 5}O{sub 12} coating. The initial capacity of the LTO-coated LiCoO{sub 2} decreased with increasing Li{sub 4}Ti{sub 5}O{sub 12} coating amount but showed enhanced cycling properties, compared to those of pristine material. The 3 wt.%more » LTO-coated LiCoO{sub 2} has the best electrochemical performance, showing capacity retention of 97.3% between 2.5 V and 4.3 V and 85.1% between 2.5 V and 4.5 V after 40 cycles. The coulomb efficiency shows that the surface coating of Li{sub 4}Ti{sub 5}O{sub 12} is beneficial to the reversible intercalation/de-intercalation of Li{sup +}. LTO-coated LiCoO{sub 2} provides good prospects for practical application of lithium secondary batteries free from safety issues.« less
  • The growth of a passivating layer on a In{sub 0.53}Ga{sub 0.47}As(001)-4 × 2 surface by atomic-layer deposition of tetrakis[ethylmethylamino]Hafnium (TEMAHf)) followed by the water pulse was investigated by synchrotron radiation photoemission. The Hf atoms maintain four-fold coordination, both after the initial TEMAHf deposition and the subsequent water pulse. The Hf atoms initially bond to the As dangling bonds of the surface As atom located on the edges of the raised ridges. One EMA ligand is removed in this process. Subsequent water exposure substitutes OH ligand for one or more remaining EMA ligands. These in turn react with TEMAHf to form Hf-O-Hf bondsmore » allowing the hafnium oxides to grow. The surface In atoms on the terrace of the raised ridges were partially removed, but none bonded of the precursor atoms. Correlations between the interfacial electronic structure and the electric performance are discussed.« less