Dual-network nanoporous NiFe2O4/NiO composites for high performance Li-ion battery anodes

Zhifeng Wang, Xiaomin Zhang, Xiaoli Liu, Weiqing Zhang, Yongguang Zhang, Yongyan Li, Chunling Qin, Weimin Zhao, Zhumabay Bakenov

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 languageEnglish
Article number124207
JournalChemical Engineering Journal
Volume388
DOIs
Publication statusPublished - May 15 2020

Keywords

  • Dealloying
  • Dual-network
  • Li-ion battery
  • Nanoporous
  • NiFeO

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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