Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11028306 | Electrochimica Acta | 2018 | 24 Pages |
Abstract
Herein, we report the design and synthesis of a unique honeycomb-like Ni3S2 structure growing directly on the Ni foam skeleton (H-Ni3S2/NF) and its application in lithium-oxygen (Li-O2) batteries as a free-standing cathode. Excellent electrocatalytic activity of honeycomb-like Ni3S2 and the unique network structure of Ni matrix can provide synergistic effect for facilitating electron transport and the diffusion of both oxygen and Li+, leading to the excellent electrochemical performance of Li-O2 battery. Specifically, Li-O2 batteries with H-Ni3S2/NF electrodes exhibit high energy efficiency (84.2%), outstanding cycle stability of over 116 cycles at limiting capacity of 4â¯mAâ¯h cmâ2 and excellent rate capability (9.84â¯mAh cmâ2 at 12â¯mAâ¯cmâ2).
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Authors
Zhiqian Hou, Chaozhu Shu, Jianping Long,