In-situ evolution of bimetallic Fe/ Ni/ Co nanohybrids on MXene for improved electrocatalytic oxygen evolution reaction

被引：13
作者：
Raj, Savan K. [1 ,2 ]
Kirti, Vartika [1 ,3 ]
Sharma, Vartika [1 ,3 ]
Srivastava, Divesh N. [1 ,3 ]
Kulshrestha, Vaibhav [1 ,3 ]
机构：
[1] Cent Salt & Marine Chem Res Inst, CSIR, Gijubhai Badheka Marg, Bhavnagar 364002, India
[2] MK Bhavnagar Univ, Dept Phys, Bhavnagar 364002, India
[3] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 96期
关键词：
Mxenes; Bimetallic nanohybrids; Electrocatalyst; OER; Stability; PERFORMANCE; COBALT; EFFICIENT; WATER; IRON; CATALYSIS; SULFIDE; ORR;
D O I：
10.1016/j.ijhydene.2022.11.093
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：
Oxygen evolution reaction (OER) is a vital electrochemical reaction for sustainable energy generation technologies. Due to the sluggish kinetics, exploration for an efficient non -precious metal catalyst is essential. Bimetallic nanohybrids are potential electrocatalysts for the OER due to their pore structure, large surface area, and inevitably dispersed metal centers. This work reports the synthesis of three bimetallic Ni-Co (NCMX), Fe-Co (FCMX), and Fe-Ni (FNMX) nanohybrids onto MXene for effective OER activity. An improved OER activity is observed on a plastic chip electrode (PCE) loaded with electrocatalysts. Among the synthesized electrocatalysts, NCMX exhibits excellent OER performance with an over -potential of 220 mV and a small Tafel slope of 94 mV/dec in a basic electrolyte (1 M KOH). The 3D MXenes framework promotes strong interaction with efficient charge transfer be-tween the nanohybrids and MXene. Results demonstrate a promising recommendation for designing high-performance MXene-supported bimetallic nanohybrid electrocatalysts.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：37732 / 37745
页数：14
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