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Title: B4C as a stable non-carbon-based oxygen electrode material for lithium-oxygen batteries

Abstract

Lithium-oxygen (Li-O 2) batteries have extremely high theoretical specific capacities and energy densities when compared with Li-ion batteries. However, the instability of both electrolyte and carbon-based oxygen electrode related to the nucleophilic attack of reduced oxygen species during oxygen reduction reaction and the electrochemical oxidation during oxygen evolution reaction are recognized as the major challenges in this field. Here we report the application of boron carbide (B 4C) as the non-carbon based oxygen electrode material for aprotic Li-O 2 batteries. B 4C has high resistance to chemical attack, good conductivity, excellent catalytic activity and low density that are suitable for battery applications. The electrochemical activity and chemical stability of B4C are systematically investigated in aprotic electrolyte. Li-O 2 cells using B4C based air electrodes exhibit better cycling stability than those used TiC based air electrode in 1 M LiTf-Tetraglyme electrolyte. The degradation of B 4C based electrode is mainly due to be the loss of active sites on B 4C electrode during cycles as identified by the structure and composition characterizations. These results clearly demonstrate that B 4C is a very promising alternative oxygen electrode material for aprotic Li-O 2 batteries. It can also be used as a standard electrodemore » to investigate the stability of electrolytes.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1344641
Report Number(s):
PNNL-SA-119212
Journal ID: ISSN 2211-2855; 48379; VT1201000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Energy; Journal Volume: 33; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; boron carbide; non-carbon electrode; oxygen electrode; lithium-oxygen battery; approtic electrode; Environmental Molecular Sciences Laboratory

Citation Formats

Song, Shidong, Xu, Wu, Cao, Ruiguo, Luo, Langli, Engelhard, Mark H., Bowden, Mark E., Liu, Bin, Estevez, Luis, Wang, Chong-Min, and Zhang, Ji-Guang. B4C as a stable non-carbon-based oxygen electrode material for lithium-oxygen batteries. United States: N. p., 2017. Web. doi:10.1016/j.nanoen.2017.01.042.
Song, Shidong, Xu, Wu, Cao, Ruiguo, Luo, Langli, Engelhard, Mark H., Bowden, Mark E., Liu, Bin, Estevez, Luis, Wang, Chong-Min, & Zhang, Ji-Guang. B4C as a stable non-carbon-based oxygen electrode material for lithium-oxygen batteries. United States. doi:10.1016/j.nanoen.2017.01.042.
Song, Shidong, Xu, Wu, Cao, Ruiguo, Luo, Langli, Engelhard, Mark H., Bowden, Mark E., Liu, Bin, Estevez, Luis, Wang, Chong-Min, and Zhang, Ji-Guang. Thu . "B4C as a stable non-carbon-based oxygen electrode material for lithium-oxygen batteries". United States. doi:10.1016/j.nanoen.2017.01.042.
@article{osti_1344641,
title = {B4C as a stable non-carbon-based oxygen electrode material for lithium-oxygen batteries},
author = {Song, Shidong and Xu, Wu and Cao, Ruiguo and Luo, Langli and Engelhard, Mark H. and Bowden, Mark E. and Liu, Bin and Estevez, Luis and Wang, Chong-Min and Zhang, Ji-Guang},
abstractNote = {Lithium-oxygen (Li-O2) batteries have extremely high theoretical specific capacities and energy densities when compared with Li-ion batteries. However, the instability of both electrolyte and carbon-based oxygen electrode related to the nucleophilic attack of reduced oxygen species during oxygen reduction reaction and the electrochemical oxidation during oxygen evolution reaction are recognized as the major challenges in this field. Here we report the application of boron carbide (B4C) as the non-carbon based oxygen electrode material for aprotic Li-O2 batteries. B4C has high resistance to chemical attack, good conductivity, excellent catalytic activity and low density that are suitable for battery applications. The electrochemical activity and chemical stability of B4C are systematically investigated in aprotic electrolyte. Li-O2 cells using B4C based air electrodes exhibit better cycling stability than those used TiC based air electrode in 1 M LiTf-Tetraglyme electrolyte. The degradation of B4C based electrode is mainly due to be the loss of active sites on B4C electrode during cycles as identified by the structure and composition characterizations. These results clearly demonstrate that B4C is a very promising alternative oxygen electrode material for aprotic Li-O2 batteries. It can also be used as a standard electrode to investigate the stability of electrolytes.},
doi = {10.1016/j.nanoen.2017.01.042},
journal = {Nano Energy},
number = C,
volume = 33,
place = {United States},
year = {Thu Jan 19 00:00:00 EST 2017},
month = {Thu Jan 19 00:00:00 EST 2017}
}