Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Single‐atom metal catalysts are promising electrocatalysts for water electrolysis. Nickel‐based have shown attractive application prospects However, synthesizing stable Ni single atoms using chemical and physical approaches remains a practical challenge. Here, facile precise method nickel on the surface of Geobacter sulfurreducens microbial‐mediated extracellular electron transfer (EET) process is demonstrated. It that G. can effectively anchor their surface. X‐ray absorption near‐edge structure Fourier‐transformed extended fine spectroscopy confirm atom coordinated to nitrogen in cytochromes. The as‐synthesized exhibit excellent bifunctional catalytic properties alkaline electrolysis with low overpotential ( η ) achieve current density (10 mA cm −2 both hydrogen evolution reactions = 80 mV) oxygen reaction 330 minimal catalyst loading 0.0015 mg . single‐atom shows long‐term stability at constant electrode potential. This synthesis based EET capability electroactive bacteria provides simple scalable approach producing low‐cost highly efficient nonnoble transition applications.

Language: Английский