Abstract
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.
| Original language | English |
|---|---|
| Article number | 124207 |
| Journal | Chemical Engineering Journal |
| Volume | 388 |
| DOIs | |
| Publication status | Published - May 15 2020 |
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Keywords
- Dealloying
- Dual-network
- Li-ion battery
- Nanoporous
- NiFeO
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Dual-network nanoporous NiFe2O4/NiO composites for high performance Li-ion battery anodes. / Wang, Zhifeng; Zhang, Xiaomin; Liu, Xiaoli; Zhang, Weiqing; Zhang, Yongguang; Li, Yongyan; Qin, Chunling; Zhao, Weimin; Bakenov, Zhumabay.
In: Chemical Engineering Journal, Vol. 388, 124207, 15.05.2020.Research output: Contribution to journal › Article
}
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
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
UR - http://www.scopus.com/inward/record.url?scp=85078864230&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85078864230&partnerID=8YFLogxK
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 -