Effect of annealing temperature on the bifunctional electrocatalytic properties of strontium nickelate (SrNiO3) nanoparticles for efficient overall water splitting

被引：20
作者：
Junita, J. [1 ]
Jayalakshmi, D. [1 ]
Rodney, John D. [2 ]
机构：
[1] Queen Marys Coll A, PG & Res Dept Phys, Chennai 600004, Tamilnadu, India
[2] Natl Inst Technol Karnataka, Dept Phys, PO Shrinivasnagar, Surathkal 575025, Karnataka, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 71期
关键词：
Perovskite; Strontium nickelate; Water splitting; Electrocatalyst; HYDROGEN EVOLUTION; PEROVSKITE; PERFORMANCE; NI; CO; HYDROXIDE; HYBRID; FE; SUPERCAPACITOR; NANOSTRUCTURES;
D O I：
10.1016/j.ijhydene.2022.07.007
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 global trend in energy demand has paved way for clean hydrogen (H2) energy pro-duction at large scale. To address this issue, perovskite (ABX3) nanomaterials are widely researched to replace the noble metal electrocatalysts for electrochemical water splitting. In this work, the effect of annealing temperature on the structural and electrochemical properties of combustion derived strontium nickelate (SrNiO3) nanoparticles are studied. Benefitting from the unique features of perovskites, SrNiO3 nanoparticles displays excel-lent OER and HER activity in 1.0 M KOH with an overpotential of 259 mV and 451 mV to achieve 10 mAcm-2 respectively. SrNiO3 nanoparticles show superior HER activity when annealed at higher temperature and subtle change in OER activity. The stability of SrNiO3 nanoparticles were noteworthy as it shows no degradation even after 12 h. The overall water splitting of highly active SrNiO3 nanoparticles was carried out in a two-electrode system and the setup posted a cell voltage of 1.88 V at 10 mAcm-2 after continuous water splitting for 24 h. Thus, SrNiO3 nanoparticles may possibly serve as a potential bifunctional electrocatalyst for H2 production.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：30602 / 30612
页数：11
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