@article{a48e806f52634a6dbeff94f4f80ceb95,
title = "Doping optimization mechanism of a bi-functional perovskite catalyst La0.8Sr0.2Co0.8Ni0.2O3-δ for Li–O2 battery cathode",
abstract = "Perovskite oxides with low cost and high catalytic activity are reported as suitable cathode catalysts for the Li–O2 batteries (LOBs), while their catalytic mechanism is not yet fully clarified. Herein, La0.8Sr0.2Co0.8Ni0.2O3-δ (LSCN8282) perovskite oxide is used as a cathode catalyst for the LOBs and further improved by adjusting the Co/Ni ratio in the B-site. Thus, La0.8Sr0.2Co0.6Ni0.4O3-δ (LSCN8264) and La0.8Sr0.2Co0.4Ni0.6O3-δ (LSCN8246) are also synthesized and used as cathode catalysts for the LOBs. Among the obtained perovskite catalysts in this study, LSCN8264 shows the highest electrochemical activity in 1 M KOH and best catalytic effectivity when used in the LOBs. The catalytic mechanism and doping optimization are clarified by analyzing the morphology of the discharge products and the X-ray photoelectron spectroscopy (XPS) of the perovskite oxides.",
keywords = "Catalytic mechanism, Doping optimization, Li–O batteries, Perovskite LSCN",
author = "Junfang Cheng and Ziling Wang and Lu Zou and Ming Zhang and Guozhu Zhang and Yabin Dong and Yuexing Jiang and Yizhen Huang and Naotoshi Nakashima and Bo Chi",
note = "Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology and Nanotechnology Platform, Ultramicroscopy Research Center (URC) of Kyushu University for characterization assistance. This work was partly supported by Core Research for Evolutional Science and Technology (CREST, Japan Science and Technology Agency (JST). This study was partly supported by NSFC (51672095) for financial support. Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology and Nanotechnology Platform, Ultramicroscopy Research Center (URC) of Kyushu University for characterization assistance. This work was partly supported by Core Research for Evolutional Science and Technology ( CREST , Japan Science and Technology Agency ( JST ). This study was partly supported by NSFC ( 51672095 ) for financial support. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = aug,
day = "5",
doi = "10.1016/j.jallcom.2020.154728",
language = "English",
volume = "831",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
}