Work

Powering Hydrogen Evolution Reaction by Precise Control Over A Cu‐Ni Bimetallic Electrocatalyst

Year: 2024

Type: article

Abstract: ABSTRACT Precious metals are effective catalysts for the hydrogen evolution reaction, but their high cost with complicated operation steps drives people to search for non–noble‐metal alternatives. Building rational design concept for efficient electrocatalyst relies on the capability to control the structure and composition. Herein, a Ni/Cu bimetallic mesoporous MOFs with 4,4′,4″‐(1,3,5‐triazine‐2,4,6‐triyl)tribenzoic acid as the robust ligand has been assembled via a one‐step solvothermal method. Due to the extensive conjugate plane and high nitrogen content, the catalyst possesses large pore size of 17 nm and fast electron transfer rate, which favors hydrogen bubble overflow and exposes more active sites to solid–liquid interfaces. The bimetallic interaction between highly conductive Cu ions and Ni ions allows it to improve charge migration and realize excellent conductivity. The functionalized electrode requires an overpotential of 132 mV to achieve 10 mA current density with a small Tafel slope (87.7 mV·dec−1) and continuous electrolysis for 24 h.

Source: Applied Organometallic Chemistry

DOI: 10.1002/aoc.7868

Authors: Yaowen Liu, Zhijie Luo, Yunbin Liao, Yuhui Zheng, Yinru Lin, Qianming Wang

Institution: South China Normal University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funder: Natural Science Foundation of Guangdong Province