TY - JOUR
T1 - Aprotic Lithium–Air Batteries Tested in Ambient Air with a High-Performance and Low-Cost Bifunctional Perovskite Catalyst
AU - Cheng, Junfang
AU - Jiang, Yuexing
AU - Zhang, Ming
AU - Sun, Yu
AU - Zou, Lu
AU - Chi, Bo
AU - Pu, Jian
AU - Jian, Li
N1 - Funding Information:
The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for samples characterization assistance and the Innovation Foundation of Graduate Innovation and Entrepreneurship Base of HUST (No. 2015650011) for financial support.
Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/4/9
Y1 - 2018/4/9
N2 - Aprotic lithium–air batteries (LABs) with remarkably high energy density are facing some challenges, including insufficient cycle stability, high-cost for applications, and unclear understanding about the mechanism. Seeking high-performance and low-cost catalysts is one of the effective solutions to resolve these problems. Perovskite oxide La0.6Sr0.4CoO3 (LSC) together with Fe and Mn doped materials La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and La0.6Sr0.4Co0.2Mn0.8O3 (LSCM) are prepared and applied as catalysts for LABs, which have been previously studied mostly in a pure oxygen atmosphere and rarely in ambient air. The results show that these catalysts are effective for LABs, and LSCF can improve the capacity and cycle number to 6027 mA h g−1 and 156 at current density of 400 mA g−1 in ambient air. The reasons for performance degradation of LABs tested in ambient air are discussed by EIS spectra and products analysis, which also clarifies the reason for improvement of the LSCF catalyst.
AB - Aprotic lithium–air batteries (LABs) with remarkably high energy density are facing some challenges, including insufficient cycle stability, high-cost for applications, and unclear understanding about the mechanism. Seeking high-performance and low-cost catalysts is one of the effective solutions to resolve these problems. Perovskite oxide La0.6Sr0.4CoO3 (LSC) together with Fe and Mn doped materials La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and La0.6Sr0.4Co0.2Mn0.8O3 (LSCM) are prepared and applied as catalysts for LABs, which have been previously studied mostly in a pure oxygen atmosphere and rarely in ambient air. The results show that these catalysts are effective for LABs, and LSCF can improve the capacity and cycle number to 6027 mA h g−1 and 156 at current density of 400 mA g−1 in ambient air. The reasons for performance degradation of LABs tested in ambient air are discussed by EIS spectra and products analysis, which also clarifies the reason for improvement of the LSCF catalyst.
KW - B-site doping
KW - aprotic lithium–air batteries
KW - bifunctional catalysts
KW - perovskite oxides
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U2 - 10.1002/cctc.201701666
DO - 10.1002/cctc.201701666
M3 - Article
AN - SCOPUS:85043273877
SN - 1867-3880
VL - 10
SP - 1635
EP - 1642
JO - ChemCatChem
JF - ChemCatChem
IS - 7
ER -