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Morphology controlled NiCo 2 O 4 as anode materials for high electrochemical performance lithium‐ion batteries
Author(s) -
Huo Jiaofei,
Zhang Guangpeng,
Wang Yinwei
Publication year - 2021
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.6520
Subject(s) - anode , electrochemistry , lithium (medication) , electrode , materials science , current density , power density , ion , battery (electricity) , energy storage , nanotechnology , chemical engineering , optoelectronics , power (physics) , chemistry , engineering , physics , medicine , organic chemistry , quantum mechanics , endocrinology
Abstract BACKGROUND Due to the high energy density of lithium‐ion batteries, they have become the main power sources for electric vehicles. However, lithium‐ion batteries suffer from severe capacity fading during their electrochemical cycles. Therefore, it is significant to develop perfect electrode materials for lithium‐ion batteries. It is known that the traditional anode materials have low specific capacity value and poor cycle performance. To overcome this problem, a novel anode material is designed in our work. RESULTS In electrochemical tests, the initial specific capacity of the NiCo 2 O 4 spheres/nanosheets (NCOs/n) electrode is as high as 1426 mAh g −1 at the current density of 0.2 C. The capacity of the NCOs/n electrode can maintain at 1020 mAh g −1 at the current density of 1C after 1000 cycles. CONCLUSIONS The as‐prepared NCOs/n electrodes exhibit high specific capacity value and superior cycle stability in high current densities. © 2020 Society of Chemical Industry