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稳定和激活活跃站点:1T-MoS₂支持Pd单个原子,用于高效的进化反应

Lu Zhao¹, Shaojie Liang¹, Li Zhang^2,3

¹Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China.

Small (Weinheim an der Bergstrasse, Germany)

|June 1, 2024

概括

在1T-二硫化物 (1T-MoS2) 上使用单个原子的新催化剂对演化反应 (HER) 显示出出色的性能. 这种先进的材料在各种电解质中提供了高效和稳定的生产.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

金属1T-MoS2表现出高电子导电性和类催化活性,用于演化反应 (HER).
合成纯1T-MoS2是困难的,因为它的高形成能量和转移稳定的性质.

研究的目的:

为演化反应 (HER) 开发一种稳定且高度活性的催化剂.
在碳支上合成1T-MoS2的薄层,并固定单个原子以提高催化性能.

主要方法:

在现场SO4(2-) 定策略,在商业碳上合成1T-MoS2.
通过 Pd-S 键将单个原子固定到 1T-MoS2 表面.
在性,酸性和中性电解质中进行电化学表征 (超电位,Tafel斜率,电荷转移电阻).
原子结构的表征和理论计算.

主要成果:

该Pd1 / 1T-MoS2 / C催化剂表现出优越的HER性能,具有较低的超电位 (53 mV在10 mA cm-2) 和小的Tafel斜率 (37 mV dec-1).
催化剂在性,酸性和中性电解质中表现出极好的稳定性和活性.
理论计算表明,高活性源于接近于零的吸附能在与原子相邻的活性硫位点.

结论:

在现场的SO4(2-) 定策略有效地为单原子催化剂合成了稳定的1T-MoS2支持.
Pd1 / 1T-MoS2 / C催化剂代表了演化反应的高效和多功能电催化剂.
该研究强调了单原子催化剂在2D材料上的潜力,用于先进的能源应用.

关键词:

电催化剂是一种电催化剂.气进化反应进化反应二硫化物二硫化物单个原子催化剂

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