Open AccessStructural and Electrochemical Properties of Ultra-Deep Ni3Si Microchannels
Author(s) -
Lufeng Wei,
Bin Zhao,
Xiaoming Zhao,
Yanfang Huang,
Pengyu Han,
Xinbin Feng,
Yibo Cui,
Zhihui Zhao
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac65bb
Subject(s) - materials science , microchannel , nanoporous , dielectric spectroscopy , cyclic voltammetry , electrochemistry , scanning electron microscope , chemical engineering , nanotechnology , dissolution , analytical chemistry (journal) , electrode , composite material , chemistry , engineering , chromatography
As an crucial branch for the development of micro/nanoporous metals, its exploration in ultra-deep direction has been ignored. In this paper, the electrochemical characteristics of ultra-deep micro/nanoporous metals were revealed based on Ni 3 Si microchannels for the first time. Ultra-deep Ni 3 Si microchannels were fabricated using the composite technology of directional solidification and selective phase dissolution. The large-scale morphology of the ultra-deep Ni 3 Si microchannels was characterized using field-emission scanning electron microscopy. The electrochemical characteristics of the ultra-deep Ni 3 Si microchannels were analyzed by cyclic voltammetry and electrochemical impedance spectroscopy. With the increase in microchannel depth, the specific capacitance of the Ni 3 Si microchannels increased, the charge storage capacity enhanced, and the charge transfer resistance considerably decreased from 38854 Ω·cm 2 to 404.9 Ω·cm 2 . The results suggested that ultra-deep Ni 3 Si microchannels have excellent electrochemical properties and can be used as an inexpensive and large-scale self-supporting catalyst in electrochemistry.