探索各种二维支撑材料对钴-钼硫化物/氧化物异质结构水电解的影响。

Exploring the Effects of Various Two-Dimensional Supporting Materials on the Water Electrolysis of Co-Mo Sulfide/Oxide Heterostructure.

作者信息

Huynh Ngoc-Diem, Choi Won Mook, Hur Seung Hyun

机构信息

School of Chemical Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan 44610, Republic of Korea.

出版信息

Nanomaterials (Basel). 2023 Aug 31;13(17):2463. doi: 10.3390/nano13172463.

DOI:10.3390/nano13172463

PMID:37686972

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10490037/

Abstract

In this study, various two-dimensional (2D) materials were used as supporting materials for the bimetallic Co and Mo sulfide/oxide (CMSO) heterostructure. The water electrolysis activity of CMSO supported on reduced graphene oxide (rGO), graphite carbon nitride (gCN), and siloxene (SiSh) was better than that of pristine CMSO. In particular, rGO-supported CMSO (CMSO@rGO) exhibited a large surface area and a low interface charge-transfer resistance, leading to a low overpotential and a Tafel slope of 259 mV (10 mA/cm) and 85 mV/dec, respectively, with excellent long-term stability over 40 h of continuous operation in the oxygen evolution reaction.

摘要

在本研究中，各种二维（2D）材料被用作双金属钴和钼硫化物/氧化物（CMSO）异质结构的支撑材料。负载在还原氧化石墨烯（rGO）、石墨氮化碳（gCN）和硅烯（SiSh）上的CMSO的水电解活性优于原始CMSO。特别是，rGO负载的CMSO（CMSO@rGO）具有较大的表面积和较低的界面电荷转移电阻，导致析氧反应中过电位较低，在10 mA/cm²时的塔菲尔斜率为259 mV，在连续运行40小时以上时具有出色的长期稳定性，塔菲尔斜率为85 mV/dec。