TY - JOUR
T1 - Dual-network nanoporous NiFe2O4/NiO composites for high performance Li-ion battery anodes
AU - Wang, Zhifeng
AU - Zhang, Xiaomin
AU - Liu, Xiaoli
AU - Zhang, Weiqing
AU - Zhang, Yongguang
AU - Li, Yongyan
AU - Qin, Chunling
AU - Zhao, Weimin
AU - Bakenov, Zhumabay
N1 - Funding Information:
The authors would like to acknowledge the financial support from Key Project of Science & Technology Research of Higher Education Institutions of Hebei Province, China (ZD2018059), National Natural Science Foundation of China ( 51671077 ), Tianjin Municipal Science and Technology Commission ( 16JCYBJC41600 ), Program for the Outstanding Young Talents of Hebei Province, China, Innovative Ability Training Project of Education Department of Hebei Province, China, for Graduate Students ( CXZZSS2019018 ), and the Targeted Program from the Ministry of Education and Science of the Republic of Kazakhstan ( BR05236524 ).
PY - 2020/5/15
Y1 - 2020/5/15
N2 - The electrochemical properties of traditional graphite anodes cannot meet the current market requirements, which restrict the commercial applications of lithium-ion batteries (LIBs). Herein, we report a facile one-step dealloying strategy to fabricate dual-network nanoporous NiFe2O4/NiO composites. The composite presents excellent electrochemical performance, delivering a high reversible capacity of 1618 mAh g−1 at 200 mA g−1 for 100 cycles followed at 500 mA g−1 for 250 cycles. Even at 1000 mA g−1, a specific capacity of 416 mAh g−1 can be retained after 2000 cycles. The good electrochemical performance ascribes to the synergistic effect of two kinds of active materials (NiFe2O4 and NiO) and the unique dual-network porous structure, in which the plenty of pores can accommodate the volume change during the charge/discharge cycling while a mass of mesopores on the skeletons shorten the diffusion distances of ions and electrons. The employed strategy opens a door for the novel structural design of dealloyed anode materials, which may facilitate the further development of the dealloying technique for various application fields.
AB - The electrochemical properties of traditional graphite anodes cannot meet the current market requirements, which restrict the commercial applications of lithium-ion batteries (LIBs). Herein, we report a facile one-step dealloying strategy to fabricate dual-network nanoporous NiFe2O4/NiO composites. The composite presents excellent electrochemical performance, delivering a high reversible capacity of 1618 mAh g−1 at 200 mA g−1 for 100 cycles followed at 500 mA g−1 for 250 cycles. Even at 1000 mA g−1, a specific capacity of 416 mAh g−1 can be retained after 2000 cycles. The good electrochemical performance ascribes to the synergistic effect of two kinds of active materials (NiFe2O4 and NiO) and the unique dual-network porous structure, in which the plenty of pores can accommodate the volume change during the charge/discharge cycling while a mass of mesopores on the skeletons shorten the diffusion distances of ions and electrons. The employed strategy opens a door for the novel structural design of dealloyed anode materials, which may facilitate the further development of the dealloying technique for various application fields.
KW - Dealloying
KW - Dual-network
KW - Li-ion battery
KW - Nanoporous
KW - NiFeO
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U2 - 10.1016/j.cej.2020.124207
DO - 10.1016/j.cej.2020.124207
M3 - Article
AN - SCOPUS:85078864230
VL - 388
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 124207
ER -