纳米花
氢
航程(航空)
大气温度范围
化学
材料科学
纳米技术
纳米结构
物理
热力学
有机化学
复合材料
作者
Chunhui Ma,Song Zhu,Yanliang Zhao,Xingyue Wang,Taozhu Zhan,Lihong Chen,Jiani Wang,Qian Liu,Zhao Xiao,Xiyong Wu,Jinlong Cai,Pingfan Wu
出处
期刊:Langmuir
[American Chemical Society]
日期:2023-12-16
标识
DOI:10.1021/acs.langmuir.3c02960
摘要
To explore, highly active electrocatalysts are essential for water splitting materials. Polyoxometalates (POMs) have drawn interesting attention in recent years due to their abundant structure and unique electrocatalytic properties. In this study, by using a POM-based precursor Co2Mo10, novel bimetallic sulfide (CoS2-MoS2) nanocomposites are rationally designed and synthesized under hydrothermal conditions. The incorporation of Co2+ to the host electrocatalyst could effectively increase the exposure of active sites of MoS2. Compared to pure MoS2, the CoS2-MoS2 nanocomposite exhibited a perfect hydrogen evolution reaction (HER) ability, for it merely requires overpotentials of 120 and 153 mV for 10 mA cm–2 working current density toward the HER in 1 M KOH and 0.5 M H2SO4 electrolyte systems, respectively. Additionally, the nanocomposite exhibited outstanding chemical stability and long-term durability. This study presents a novel strategy that utilizes POMs to enrich the exposed edge sites of MoS2, resulting in the preparation of efficient electrocatalysts.
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