Modulation of the multiphase phosphorus/sulfide heterogeneous interface via rare earth for solar‐enhanced water splitting at industrial‐level current densities.

Autor: Cheng, Yikun, Fu, Pengjie, Yu, Zhipeng, Yang, Xiaodong, Zhang, Yangrui, Yuan, Aojie, Liu, Huan, Du, Jianhao, Chen, Long
Předmět:
Zdroj: Carbon Neutralization; Sep2024, Vol. 3 Issue 5, p873-887, 15p
Abstrakt: Photoelectrically coupling water splitting at high current density is a promising approach for the acquisition of green hydrogen energy. However, it places significant demands on the photo/electrocatalysts. Herein, rare earth elements doping NiMoO4‐based phosphorus/sulfide heterostructure nanorod arrays (RE‐NiMo‐PS@NF [RE = Y, Er, La, and Sc]) are obtained for solar‐enhanced electrocatalytic water splitting at high current densities. The results of the experiment and density‐functional theory studies illustrate that the Y element as a dopant not only makes the NiMoP2/NiMo3S4/NiMoO4 heterostructure exhibit excellent solar‐enhanced electrocatalytic activity (hydrogen evolution reaction [HER]: η1000 = 211 mV, oxygen evolution reaction [OER]: η1000 = 367 mV) but also optimizes the heterostructure interfacial electron density distributions and HER free energy. In addition, Y‐NiMo‐PS@NF achieves 18.64% solar‐to‐hydrogen efficiency. This study not only provides a new way to synthesize heterostructure electrocatalysts but also inspires the application of solar enhancement strategies for high current density water splitting. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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