Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11001677 | Materials Letters | 2019 | 8 Pages |
Abstract
Nickel hydroxide and nickel oxide were prepared via a facile chemical precipitation method, whose structure, morphology and electrochemical properties were compared. Nickel hydroxide demonstrated nanopetal-like morphology, pseudocapacitive nature, a superior specific capacitance of 701â¯Fâ¯gâ1 at 1â¯Aâ¯gâ1 and admirable capacitance retention of 84.16% even after 5000 consecutive charge-discharge cycles in 2â¯M KOH aqueous electrolyte. Meanwhile, nickel oxide grew into a cluster of randomly shaped nanostructures with pseudocapacitive behavior and comparatively lower specific capacitance of 171â¯Fâ¯gâ1 at 1â¯Aâ¯gâ1. In nickel hydroxide, the freedom of movement of electrolyte ions is responsible for its loftier charge storage capability.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Biny R. Wiston, M. Ashok,