调整镍上金属氧化物的路易斯酸度以促进中性电解质中电催化析氢，这一成果由天津理工大学材料科学与工程学院鲁统部团队经过不懈努力而取得。相关论文于2025年2月18日发表于国际顶尖学术期刊《美国化学会杂志》上。

在此，该团队首先设计了一系列以Ni为装饰材料的金属氧化物作为模型催化剂，并发现Ni/金属氧化物的刘易斯酸度与中性介质中HER活性之间存在火山状关系。具有最佳Lewis酸度的Ni/ZnO可以平衡水解离和羟基脱附，从而大大提高HER。在此基础上，小组进一步在三维导电支架上原位生长了Ni/ZnO异质结构。所得到的催化剂只需要34和194mV的过电位就可以分别提供10和200mA cm^-2的电流密度，并且可以在1m磷酸盐缓冲溶液（pH7）中以这些电流密度稳定工作2000小时，代表了迄今为止报道的中性电解质中最活跃和耐用的HER催化剂。他们的工作为低成本和高性能的中性HER催化剂提供了有效的设计方案。

研究人员表示，中性ph水裂解制氢具有良好的环境，可以减轻催化剂和电解槽的腐蚀，但需要相应的高效和地球丰富的析氢反应（HER）催化剂。

附：英文原文

Title: Tailoring Lewis Acidity of Metal Oxides on Nickel to Boost Electrocatalytic Hydrogen Evolution in Neutral Electrolyte

Author: Lin-Lin Wang, Xiao-Ran Wang, Hong-Juan Wang, Chong Zhang, Jing-Jing Li, Guo-Jin Feng, Xuan-Xuan Cheng, Xue-Rong Qin, Zi-You Yu, Tong-Bu Lu

Issue&Volume: February 18, 2025

Abstract: Neutral-pH water splitting for hydrogen production features a benign environment that could alleviate catalyst and electrolyzer corrosion but calls for the corresponding high-efficiency and earth-abundant hydrogen evolution reaction (HER) catalysts. Herein, we first designed a series of metal oxides decorated on Ni as the model catalysts and found a volcano-shaped relationship between the Lewis acidity of Ni/metal oxides and HER activity in neutral media. The Ni/ZnO with the optimum Lewis acidity could balance water dissociation and hydroxyl desorption, thereby greatly boosting the HER. On the basis of this finding, we further in situ grew the Ni/ZnO heterostructure on a three-dimensional conductive support. The resulting catalyst requires overpotentials of merely 34 and 194 mV to deliver the current densities of 10 and 200 mA cm–2, respectively, and can stably operate at these current densities for 2000 h in 1 M phosphate buffer solution (pH 7), representing the most active and durable HER catalyst in neutral electrolyte reported thus far. Our work provides an effective design scheme for low-cost and high-performance neutral HER catalysts.

DOI: 10.1021/jacs.4c16596

Source: https://pubs.acs.org/doi/abs/10.1021/jacs.4c16596