Hierarchical LiMn2O4 Hollow Cubes with Exposed {111} Planes as High-Power Cathodes for Lithium-Ion Batteries

Yu Wu, Chuanbao Cao*, Junting Zhang, Lin Wang, Xilan Ma, Xingyan Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Hierarchical LiMn2O4 hollow cubes with exposed {111} planes have been synthesized using cube-shaped MnCO3 precursors, which are fabricated through a facile co-precipitation reaction. Without surface modification, the as-prepared LiMn2O4 exhibits excellent cyclability and superior rate capability. Surprisingly, even over 70% of primal discharge capacity can be maintained for up to 1000 cycles at 50 C, and with only about 72 s of discharge time the as-prepared materials can deliver initial discharge capacity of 96.5 mA h g-1. What is more, the materials have 98.4% and 90.7% capacity retentions for up to 100 cycles at 5 C under the temperatures of 25 and 60 °C, respectively. The superior electrochemical performance can be attributed to the unique hierarchical and interior hollow structure, exposed {111} planes, and high-quality crystallinity.

Original languageEnglish
Pages (from-to)19567-19572
Number of pages6
JournalACS applied materials & interfaces
Volume8
Issue number30
DOIs
Publication statusPublished - 3 Aug 2016

Keywords

  • LiMnO
  • exposed {111} planes
  • hierarchical
  • hollow cubes
  • lithium-ion batteries
  • superior electrochemical performance

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