TY - JOUR
T1 - Electrodeposition of nano-nickel in deep eutectic solvents for hydrogen evolution reaction in alkaline solution
AU - Wang, Shujuan
AU - Zou, Xingli
AU - Lu, Yi
AU - Rao, Shuaichao
AU - Xie, Xueliang
AU - Pang, Zhongya
AU - Lu, Xionggang
AU - Xu, Qian
AU - Zhou, Zhongfu
N1 - Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2018/8/16
Y1 - 2018/8/16
N2 - The electrodeposition of nano-Ni films on a Cu substrate from NiCl2 precursors in choline chloride (ChCl)/urea or ethylene glycol (EG) based deep eutectic solvent (DES) was illustrated. Voltammetric study demonstrates that the electrodeposition of Ni(Ⅱ) in both ChCl/urea and ChCl/EG systems is a simple one-step reaction process, and the electrochemical process is a typical diffusion-controlled irreversible process. The obtained Ni films can be controlled to form nanostructures depending on the DES and the electrodeposition conditions. The nanostructured Ni films were investigated as electrodes for hydrogen evolution reaction (HER) in an alkaline medium. The enhanced catalytic activity toward the HER was confirmed, which is mainly attributed to the formation of needles morphology and the improved electrochemical surface area. The result reveals that the electrodeposition process may provide a promising strategy for the production of nano-Ni at low temperature for HER
AB - The electrodeposition of nano-Ni films on a Cu substrate from NiCl2 precursors in choline chloride (ChCl)/urea or ethylene glycol (EG) based deep eutectic solvent (DES) was illustrated. Voltammetric study demonstrates that the electrodeposition of Ni(Ⅱ) in both ChCl/urea and ChCl/EG systems is a simple one-step reaction process, and the electrochemical process is a typical diffusion-controlled irreversible process. The obtained Ni films can be controlled to form nanostructures depending on the DES and the electrodeposition conditions. The nanostructured Ni films were investigated as electrodes for hydrogen evolution reaction (HER) in an alkaline medium. The enhanced catalytic activity toward the HER was confirmed, which is mainly attributed to the formation of needles morphology and the improved electrochemical surface area. The result reveals that the electrodeposition process may provide a promising strategy for the production of nano-Ni at low temperature for HER
KW - Deep eutectic solvent
KW - Electro-catalytic activity
KW - Electrosynthesis
KW - Hydrogen evolution reaction
KW - Nano-Ni
UR - http://www.scopus.com/inward/record.url?scp=85050333258&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.06.188
DO - 10.1016/j.ijhydene.2018.06.188
M3 - Article
SN - 0360-3199
VL - 43
SP - 15673
EP - 15686
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 33
ER -