Crystallineeamorphous Ni4.5Fe4.5S8/NiFeS heterostructure for alkaline water oxidation electrocatalysis

被引：11

作者：

Han, Yujun ^{[1
]}

Zeng, Xin ^{[1
]}

Liu, Yuhang ^{[1
]}

Shi, Shuanzhen ^{[1
]}

Xiong, Pan ^{[4
]}

Wang, Tongzhou ^{[2
,3
]}

Pan, Xiangmin ^{[5
]}

Li, Jihong ^{[2
,3
]}

Hu, Wenbin ^{[1
]}

Deng, Yida ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300072, Peoples R China

[2] Hainan Univ, Sch Mat Sci & Engn, State Key Lab Marine Resource Utilizat South China, Haikou 570228, Peoples R China

[3] Nankai Univ, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

[4] Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Minist Educ, Nanjing 210094, Peoples R China

[5] Tongji Univ, Clean Energy Automot Engn Ctr, Sch Automot Studies, 4800 Caoan Rd, Shanghai 201804, Peoples R China

来源：

MATERIALS TODAY ENERGY | 2023年 / 38卷

基金：

中国国家自然科学基金; 海南省自然科学基金;

关键词：

Water splitting; Oxygen evolution reaction; Catalysts; Heterostructure; CATALYSIS;

D O I：

10.1016/j.mtener.2023.101442

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：

Electrochemical water splitting, hailed for its cost-effectiveness and eco-friendliness in hydrogen energy production, faces a significant impediment in the form of the oxygen evolution reaction (OER), charac-terized by inherently slow kinetics. Addressing this challenge, the utilization of crystalline-amorphous (c-a) heterostructures, offering precise interface modulation, emerges as a promising solution. In this study, we report the synthesis of a robust electrode comprising of crystalline Ni4.5Fe4.5S8 nanospheres integrated with amorphous NiFeS nanosheets (denoted as NiFeS-TH) using a hydrothermal approach. Remarkably, this electrode exhibits exceptional performance in alkaline electrolytes, requiring a mere overpotential of 420 mV to attain a current density of 2 A/cm2. This enhanced OER performance is attributed to the substantial electrochemically active surface area and the presence of compressive strain at the interfaces. These profound insights into heterostructure design hold the potential to revolutionize the tailoring and optimization of OER efficiency.(c) 2023 Published by Elsevier Ltd.

引用

页数：9

共 49 条

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