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Bi 2 S 3 /Ketjen Black as a Highly Efficient Bifunctional Catalyst for Long‐Cycle Lithium‐Oxygen Batteries
Author(s) -
Xu Peng,
Zhu Jiajia,
Chen Congdi,
Xie Jian,
Wang Miao
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901112
Subject(s) - bifunctional , lithium (medication) , catalysis , cathode , nanorod , cover (algebra) , oxygen , materials science , chemical engineering , chemistry , nanotechnology , engineering , mechanical engineering , organic chemistry , medicine , endocrinology
Invited for this month's cover picture is the group of Prof. Miao Wang from Zhejiang University (China). The cover picture shows the discharge process of Li–O 2 batteries catalyzed by Bi 2 S 3 /Ketjen black (KB) and the different growth modes of Li 2 O 2 on the cathodes. It is found that the film‐like Li 2 O 2 is deposited on Bi 2 S 3 nanorods prior to on KB at a low discharge capacity. As the discharge process proceeds, the Li 2 O 2 will deposit on both Bi 2 S 3 and KB at a high capacity, where Li 2 O 2 crystallizes into nanosheets on KB. The merit of this growth mode is that the electrode deactivation will be deferred and the side reactions will be refrained, leading to an excellent cycling performance. Read the full text of the Article at 10.1002/celc.201900191.