Hierarchical ternary CoFeMn selenides with nanowire-nanosheet-nanoparticles for ultra-efficient bifunctional water-urea electrocatalysis

被引：0

作者：

Zhang, Haojun ^{[1
]}

Zheng, Yang ^{[1
]}

Liu, Huan ^{[1
]}

Zhao, Zhiwen ^{[1
]}

Xiong, Jiahao ^{[1
]}

Zhang, Dingbo ^{[1
]}

Wang, Qing ^{[1
]}

Du, Jianhao ^{[1
]}

Yuan, Aojie ^{[1
]}

Chen, Long ^{[1
]}

机构：

[1] Shihezi Univ, Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2025年 / 154卷

关键词：

Selenide derivative; Layered double hydroxides; Oxygen evolution reaction; Urea oxidation reaction; DOUBLE-HYDROXIDE NANOSHEETS; PERFORMANCE;

D O I：

10.1016/j.ijhydene.2025.150284

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：

Layered double hydroxides (LDHs) have unique crystal structure and excellent catalytic activityc[1]. However, its low conductivity limits the charge transfer efficiency and actual catalytic performance[2]. In this study, ternary selenide[3] heterostructures derived from LDHs are prepared, and the effect of different selenium concentrations on the morphology and electrocatalytic performance are systematically studied. When the ratio of Se to Fe is 5:1, the obtained Co3Se4/Fe3Se4/MnSe ((CoFeMn)Se5) electrocatalyst possesses a unique nanowirenanosheet-nanoparticles composite morphology, and significantly improves its conductivity. (CoFeMn)Se5 has the maximum electrocatalytic activity of oxygen evolution reaction (OER): 1.480 V@100 mA/cm2; urea oxidation reaction (UOR): 1.374 V@100 mA/cm2 and overall water splitting (OWS): 1.765 V@100 mA/cm2. This work provides new ideas and references for the design of efficient electrocatalysts for OWS.

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页数：8

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