Surface controlled synthesis of Cu2FeSnS4 particles for enhanced hydrogen evolution reaction

被引：17

作者：

Mukurala, Nagaraju ^{[1
]}

Mokurala, Krishnaiah ^{[3
]}

Mohapatra, Lokanath ^{[1
]}

Suman, Siddhartha ^{[1
]}

Kushwaha, Ajay Kumar ^{[1
,2
]}

机构：

[1] Indian Inst Technol Indore, Dept Met Engn & Mat Sci, Indore 453552, India

[2] Indian Inst Technol Indore, Ctr Adv Elect, Indore 453552, India

[3] Incheon Natl Univ, Dept Elect Engn, Incheon 406772, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 70期

关键词：

CFTS particles; Surfactants; Electro-catalyst; Hydrogen evolution; Surface area; ELECTROCATALYTIC PERFORMANCE; SOLVOTHERMAL SYNTHESIS; FLOWER-LIKE; THIN-FILMS; WATER; EFFICIENT; MORPHOLOGY; NI; NANOPARTICLES; ELECTRODE;

D O I：

10.1016/j.ijhydene.2021.08.033

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：

Cu2FeSnS4 (CFTS) particles are synthesized using different surfactants such as thioglycolic acid (TGA), polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) via the solution process. The effect of surfactants on crystal structure, morphology, elemental composition, and electrocatalytic properties of CFTS particles are investigated. CFTS particles with a better crystalline phase are obtained in PVP (surfactant), while impurity phases are observed in TGA and PVA (surfactants). The morphology of CFTS is significantly changed when a different surfactant is used in the synthesis process. The mixture of aggregate and porous (1 mm) particles is observed when PVA is used as a surfactant to synthesize CFTS particles. At the same time, highly porous particles having nanosheets and nanoparticles at the surface are obtained in the case of PVP. In the TGA case, spherical particles with 1 mm size are observed. The electrocatalytic ability of all CFTS particles toward hydrogen evolution reactions (HER) is studied in 0.5 M H2SO4 electrolyte. The overpotential of PVP-based CFTS particles is the lowest as n = 421 mV at 10 mA/cm(2) compared to the other two samples. CFTS particles synthesized using PVP exhibit enhanced electro-catalytic performance due to higher surface area. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：34689 / 34700

页数：12

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