过电位
材料科学
无定形固体
气凝胶
相(物质)
化学工程
纳米技术
结晶学
电极
化学
物理化学
有机化学
电化学
工程类
作者
Kai Deng,Wenxin Wang,Zilong Lian,Hongjie Yu,Ziqiang Wang,You Xu,Hongjing Wang,Liang Wang
出处
期刊:Small
[Wiley]
日期:2023-08-10
卷期号:19 (49)
被引量:16
标识
DOI:10.1002/smll.202304181
摘要
Abstract Amorphous/crystalline (a/c) hetero‐phase structures are considered as a class of efficient electrocatalysts for hydrogen evolution reaction (HER), but it remains a substantial challenge to obtain the specific phase by phase‐selective synthesis. In this work, a general route for the preparation of various heterogeneous aerogels (RuB, PtB, PdB, and RhB) consisting of amorphous and crystalline phases is presented through a controlled NaBH 4 reduction method. The prepared a/c‐RuB aerogel exhibits better HER performance due to their desirable compositional and structural advantages such as more exposed active sites, optimized electronic structure, and interfacial synergistic effects. It requires only a low overpotential of 39 mV to reach a density of 10 mA cm −2 and also exhibits excellent stability. This work provides a new phase‐selective synthesis strategy for the design and development of advanced hetero‐phase electrocatalysts.
科研通智能强力驱动
Strongly Powered by AbleSci AI