Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (54권1호 37-42)

Effect of Hexa-methylenetetramine (HMT) on Nucleation and Growth Behaviors of Ni(OH)2 Nanosheets Produced by Electrodeposition

전착법으로 제작한 Ni(OH)2 나노 시트의 핵 형성과 성장 거동에 미치는 헥사-메틸렌테트라민(HMT)의 영향

김동연;손인준;최문현;
Kim, Dong Yeon;Son, Injoon;Choi, Mun-Hyun;

경북대학교 금속신소재공학전공;동강테크;
Department of Materials Science and Metallurgical Engineering, Kyungpook National University;Dongkang Tech Corp.;

DOI : 10.5695/JKISE.2021.54.1.37

Abstract

Electrodeposition is a synthetic method that allows fine control of the nucleation and growth factors of metals and is a suitable method for studying the nucleation and growth of Ni(OH)2. Hexa-methylenetetramine (HMT) helps to form Ni(OH)2 nanosheets by increasing the OH- of the nickel precursor solution and helps to improve the electrochemical properties of the electrode. In this study, the structural properties of Ni(OH)2 nanosheets according to the HMT concentration change using electrodeposition were studied. As the concentration of HMT increased, the size and thickness of the Ni(OH)2 nanosheet adsorbed on the surface increased and porosity increased. Also, the Scharifker-Hills nucleation theory model and experimental data were compared. In conclusion, the nanosheet shape of the HMT 7.5 mM sample electrodeposited with -0.85 V vs. Ag/AgCl grew most uniformly, and the best result was obtained as an electrode material for a pseudocapacitor.

Keywords

Electrodeposition;Hexa-methylenetetramine (HMT);$Ni(OH)_2$ nanosheet;Scharifker-Hills nucleation theory model;