Co-Construction of Sulfur Vacancies and Heterogeneous Interface into Ni_(3)S_(2)/MoS_(2) Catalysts to Achieve Highly Efficient Overall Water Splitting  

作　　者：Zhaoyang An Hui Xue Jing Sun Niankun Guo Tianshan Song Jiawen Sun Yi-Ru Hao Qin Wang 

机构地区：[1]College of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot 010021,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第8期37-43,共7页结构化学（英文）

基　　金：financially supported by the National Natural Science Foundation of China (NSFC 21666023, 21467019, 21701168);Natural Science Foundation of Inner Mongolia Autonomous Region of China (2021ZD11, 2019BS02015);Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region (NJYT-19-A01);Postsubsidy Funds for the Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials (2021PT0003)。

摘　　要：Integrating the advantages of anion vacancies and heterostructures into the catalytic materials may increase the binding affinities to intermediates, provide more active sites, and significantly promote the activity of overall water splitting. However, the successful assembly of anion vacancies and heterostructures for high-efficiency water splitting performance is still challenging. In this work, we ingeniously present the co-construction of sulfur vacancies and heterogeneous interface into Ni_(3)S_(2)/MoS_(2) catalysts on nickel foam(NF). The introduction of sulfur vacancies and Ni_(3)S_(2)/MoS_(2) heterostructures can significantly improve electron and ion transport, effectively improve structural stability, and enhance overall water splitting activity. The obtained VSNi_(3)S_(2)/MoS_(2) catalysts(VS stands for sulfur vacancies) exhibit superior OER and HER activities,and the overpotentials for OER and HER are 180 and 71 mV at 10 mA·cm^(-2), respectively. Furthermore, a low water splitting voltage of 1.46 V is required at 10 mA·cm^(-2) for the VS-Ni_(3)S_(2)/MoS_(2) catalysts, which is considerably lower than most that of water splitting electrocatalysts currently reported. This work offers an effective mean for the preparation of catalysts with both anion vacancies and heterostructures for achieving high-performance alkaline overall water splitting.

关 键 词：sulfur vacancies HETEROSTRUCTURES transition metal chalcogenides overall water splitting 

分 类 号：TQ116.2[化学工程—无机化工] TQ426