Novel Flower-like Nickel Sulfide as an Efficient Electrocatalyst for Non-aqueous Lithium-Air Batteries.
Novel Flower-like Nickel Sulfide as an Efficient Electrocatalyst for Non-aqueous Lithium-Air Batteries.
复制标题
新型花状硫化镍作为非水锂空气电池的高效电催化剂
DOI：
10.1038/srep18199
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发表时间：
2015-12-14
影响因子：
4.6
通讯作者：
Zhang J
中科院分区：
文献类型：
--
作者：
Ma Z;Yuan X;Zhang Z;Mei D;Li L;Ma ZF;Zhang L;Yang J;Zhang J
In this paper, metal sulfide materials have been explored for the first time as a new choice of bifunctional cathode electrocatalyst materials for non-aqueous lithium-air batteries (LABs). Nickel sulfides with two different morphologies of flower-like (f-NiS) and rod-like (r-NiS) are successfully synthesized using a hydrothermal method with and without the assistance of cetyltrimethyl ammonium bromide. As LAB cathode catalysts, both f-NiS and r-NiS demonstrate excellent catalytic activities towards the formation and decomposition of Li2O2, resulting in improved specific capacity, reduced overpotentials and enhanced cycling performance when compared to those of pure Super P based electrode. Moreover, the morphology of NiS materials can greatly affect LAB performance. Particularly, the f-NiS is more favorable than r-NiS in terms of their application in LABs. When compared to both r-NiS and pure super P materials as LAB cathode materials, this f-NiS catalyst material can give the highest capacity of 6733 mA h g−1and the lowest charge voltage of 4.24 V at the current density of 75 mA g−1and also exhibit an quite stable cycling performance.
