Flower-like molybdenum disulfide for efficient hydrogen and oxygen evolution reaction

被引：17
作者：
Ghanashyam, Gyawali [1 ]
Jeong, Hae Kyung [1 ,2 ]
机构：
[1] Daegu Univ, Inst Nat Sci, Dept Phys, Gyongsan 712714, South Korea
[2] Daegu Univ, Inst Ind & Tech, Dept Mat Energy Sci & Engn, Daegu 712714, South Korea
来源：
INORGANICA CHIMICA ACTA | 2022年 / 541卷
基金：
新加坡国家研究基金会;
关键词：
Molybdenum disulfide; Hydrothermal synthesis; Nitrogen doping; Hydrogen evolution reaction; Oxygen evolution reaction; NANOSHEETS; MOS2; HETEROSTRUCTURES; OER;
D O I：
10.1016/j.ica.2022.121098
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Substantial research work has been demonstrated that molybdenum disulfide-based catalysts have exceptional performance in hydrogen evolution reaction (HER), while very few research has been conducted on the oxygen evolution reaction (OER). Here we synthesized flower-like molybdenum disulfide (syn-MoS2) by using hydro-thermal method for enhanced bifunctional HER and OER activity. It exhibits low overpotential of -170 mV at-10 mA/cm(2) for HER and 240 mV at 10 mA/cm(2) for OER with Tafel slope of 99 and 119 mV/dec, respectively. The improved performance is attributed to the fact that the expanded electrochemical active surface area of MoS2 can offer abundant exposed active sites and increase electrochemical conductivity for HER and OER. This work emphasizes a controllable one-step hydrothermal method for easy synthesis and design of flower-like MoS2, highly beneficial material for applications of clean and green energy conversion that can be optimize strategies of two-dimensional materials.
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页数：9
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