期刊
APPLIED SURFACE SCIENCE
卷 549, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149227
关键词
Solid-diffusion; Stainless steel mesh; Mesoporous structure; Water splitting; Electrocatalysts
类别
资金
- Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) [PLN161. PLN201806]
- Research Program of Science and Technology Department of Sichuan Province [2018JY0302, 18YYJC0018, 2020JDJQ0057]
- National Natural Science Foundation of China [51774245]
A self-supporting electrocatalyst PSD-SM with metal phosphides-encapsulated N, P co-doped carbon nanotubes coating was fabricated via solid diffusion and phosphorization process. PSD-SM exhibited excellent catalytic activity with low deliver potential for water electrolysis, providing a promising method for preparing efficient electrocatalytic materials based on steel mesh.
Herein, In-situ conversional mycelium-like metal phosphides-encapsulated N, P co-doped carbon nanotubes (CNTs) coating on the stainless steel mesh (PSD-SM) as self-supporting electrocatalyst was fabricated via solid diffusion (SD) and phosphorization process, which was the first time to fabricated the chainmail for catalysts; use stainless steel mesh worked as self-reaction template and electrode-base materilas. The in-situ transformational mycelium-like CNTs array structure greatly enhanced the specific surface area of steel mesh and the graphitized carbon layer coating with high capacitance increases the electrochemical active sites. And the subsequent phosphorization treatment further improved the intrinsic catalytic activity of the material. PSD-SM exhibits the low overpotential of 231 mV at 10 mA.cm(-2) with a Tafel slope of 88 mV.dec(-1) for OER and 172 mV at 10 mA.cm(-2) with a Tafel slope of 125 mV.dec(-1) for HER. Further more, there are only 1.77 V deliver potential for water electrolysis of PSD-SM at 10 mA.cm(-2) and the kinetic mechanism of as-fabricated samples for HER and OER was analyzed by Tafel slope and other measurement. This report provides an promising method to prepare efficient and robust electrocatalytic materials based on steel mesh for practical application.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据