High-efficiency electrocatalytic hydrogen generation under harsh acidic condition by commercially viable Pt nanocluster-decorated non-polar faceted GaN nanowires

被引：0

作者：

Abdullah, Ameer ^{[1
]}

Tariq, Fawad ^{[1
]}

Kulkarni, Mandar A. ^{[1
]}

Thaalbi, Hamza ^{[1
]}

Din, Haseeb Ud ^{[1
]}

Kang, Soon Hyung ^{[2
]}

Ryu, Sang-Wan ^{[1
,2
]}

机构：

[1] Chonnam Natl Univ, Dept Phys, Gwangju 61186, South Korea

[2] Chonnam Natl Univ, Optoelect Convergence Res Ctr, Gwangju 61186, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 94卷

基金：

新加坡国家研究基金会;

关键词：

Gallium nitride; Nanowires; Pt nanoclusters; Electrochemical; Water splitting; CATALYSTS; NANOPARTICLES;

D O I：

10.1016/j.ijhydene.2024.11.174

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrochemical water splitting is vital for green hydrogen production and clean energy. This study introduces a novel approach: platinum nanoclusters (Pt NCs) decorated GaN nanowires (GNWs) on p++-Si substrates to enhance hydrogen generation efficiency. Highly-crystalline GNWs synthesized via commercial metal-organic chemical vapor deposition provide a scalable platform for hydrogen evolution. To address the cost limitations of Pt-based electrocatalysts, we developed a method for loading ultralow Pt NCs via photoelectrochemical deposition. Investigations underscore the Pt-Ga sites' crucial role in promoting efficient H2 production. The Pt NCs/GNWs/p++-Si electrode achieved -10 mA/cm2 current density at +50 mV vs. the RHE and sustained -20 mA/cm2 for 90 h under harsh acidic conditions at room temperature and atmospheric pressure with nearly 100% retention. This study offers insights into efficient and stable electrodes for electrochemical H2 generation.

引用

页码：1257 / 1265

页数：9