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Hydrothermal Synthesis of Nickel Oxide Nanosheets for Lithium‐Ion Batteries and Supercapacitors with Excellent Performance
Author(s) -
Mondal Anjon Kumar,
Su Dawei,
Wang Ying,
Chen Shuangqiang,
Wang Guoxiu
Publication year - 2013
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201300708
Subject(s) - supercapacitor , materials science , nickel , lithium (medication) , hydrothermal circulation , nickel oxide , oxide , chemical engineering , capacitance , electrode , hydrothermal synthesis , current density , inorganic chemistry , nanotechnology , chemistry , metallurgy , medicine , physics , quantum mechanics , engineering , endocrinology
Nickel oxide nanosheets have been successfully synthesized by a facile ethylene glycol mediated hydrothermal method. The morphology and crystal structure of the nickel oxide nanosheets were characterized by X‐ray diffraction, field‐emission SEM, and TEM. When applied as electrode materials for lithium‐ion batteries and supercapacitors, nickel oxide nanosheets exhibited a high, reversible lithium storage capacity of 1193 mA h g −1 at a current density of 500 mA g −1 , an enhanced rate capability, and good cycling stability. Nickel oxide nanosheets also demonstrated a superior specific capacitance of 999 F g −1 at a current density of 20 A g −1 in supercapacitors.