Microwave synthesis of NiMn2O4/Ni-foam: Efficient bifunctional electrocatalysts for overall water splitting

被引：24
作者：
Nagajyothi, P. C. [1 ]
Pavani, K. [2 ]
Ramaraghavulu, R. [3 ]
Shim, Jaesool [1 ]
机构：
[1] Yeungnam Univ, Sch Mech Engn, Gyeungsan 384541, South Korea
[2] Univ Aveiro, Dept Phys, I3N, P-3810193 Aveiro, Portugal
[3] REVA Univ, Sch Appl Sci, Dept Phys, Bangalore 560064, Karnataka, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 54卷
基金：
新加坡国家研究基金会;
关键词：
Microwave synthesis; Electrocatalyst; Water-splitting; OXYGEN EVOLUTION REACTION; NIMN2O4; NANOPARTICLES; ASSISTED SYNTHESIS; NICKEL FOAM; PERFORMANCE; ELECTRODE; SPINEL; MICROSPHERES; MECHANISM; MN;
D O I：
10.1016/j.ijhydene.2023.09.046
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：
The development of efficient and earth-abundant electrocatalysts for water splitting is necessary and crucial. In this study, NiMn2O4 nanosheets and nanosphericals were grown on Ni foam by microwave synthesis at 150 degrees C and 175 degrees C and the corresponding synthesized materials were referred to as NIM-150 and NIM-175, respectively. These materials were subsequently used as bifunctional electrocatalysts for the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting. The NIM-175 electrocatalyst showed a lower overpotential of 250 mV for the OER and 248 mV for the HER at 10 mA cm-2, and a smaller Tafel slope of 218 mV dec-1 for the OER and 198 mV dec-1 for the HER, compared to NIM-150. The NIM-150 and NIM-175 electrocatalysts exhibited excellent stability for overall water splitting. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：691 / 699
页数：9
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