Densely-stacked N-doped mesoporous TiO2/carbon microsphere derived from outdated milk as high-performance electrode material for energy storages

Yange Wang, Yang Lu, Rongjie Luo, Yingge Zhang, Yan Guo, Qiuhong Yu, Xianming Liu, Jang Kyo Kim, Yongsong Luo

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Spherical N-doped mesoporous TiO2/C (MTC) composite micro-particles are produced by spray drying (SD) and carbonization process. The particle size of MTC microsphere is between 2 and 3.4 µm, and the N-doped amorphous C around TiO2 could provide a conductive matrix, and buffer the volume change. When evaluated as electrodes for Li-ion batteries (LIBs) and Li-S batteries (LSBs), the MTC microsphere exhibits relatively high discharge-voltage plateau, excellent capacity retention and rate capability. As anode for LIBs, after 200 cycles, a reversible capacity more than 230 mA h g−1 can achieved at 1 C. And for LSBs, a specific capacity of 1317.7 mA h g−1 at 1 C and the capacity retention of 73.8% after 500 cycles. The superior electrochemical performance is ascribed to robust scaffolding architecture and conductive N-doped carbon matrix. The excellent electrochemical performance and process ability of the MTC microspheres make them very attractive as electrode materials for use in high rate battery application.

Original languageBritish English
Pages (from-to)16265-16272
Number of pages8
JournalCeramics International
Volume44
Issue number14
DOIs
StatePublished - 1 Oct 2018

Keywords

  • Lithium-ion batteries
  • Lithium-sulfur batteries
  • Outdated milk
  • Spray drying

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