Controllable lithium deposition behavior hollow of N, O co-doped carbon nanospheres for practical lithium metal batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Chunhui Gao
  • Jie Li
  • Kena Sun
  • Bo Hong
  • Maohui Bai
  • Kai Zhang
  • Zhian Zhang
  • Yanqing Lai

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number128721
Journal / PublicationChemical Engineering Journal
Volume412
Online published30 Jan 2021
Publication statusPublished - 15 May 2021

Abstract

Metallic Li is of great significance for high energy Li-based batteries due to its high specific capacity, low electrochemical potential, and low density. However, host-less Li deposition and dendritic growth are the main bottlenecks in Li-based batteries’ practical application. We demonstrate a hollow N, O co-doped carbon nanosphere (NOCS) as a current collector for Li metal anode in this work. It can alleviate the volume effect and delay the generation of Li dendrite and induce the uniform deposition of Li on the NOCS electrode and improve Coulombic efficiency (CE). Li/NOCS half cells deliver a higher CE and longer cycle life, and symmetrical cells exhibit lower voltage hysteresis and more stable cyclic performance. DFT calculation confirmed that N-doping and O-doping improve the affinity between N/O-doped carbon sites with Li. Besides, we use finite Li as the anode to prepare the Li@NOCS||LiFePO4 full cells to evaluate the possibility of practical application. The Li@NOCS||LiFePO4 full cells have excellent cycling and rate performance compared to Li@Cu|| LiFePO4 full cells.

Research Area(s)

  • Alleviating volume effect, Hollow structure, N, O co-doping carbon nanospheres, Uniform Li deposition

Citation Format(s)

Controllable lithium deposition behavior hollow of N, O co-doped carbon nanospheres for practical lithium metal batteries. / Gao, Chunhui; Li, Jie; Sun, Kena; Li, Huangxu; Hong, Bo; Bai, Maohui; Zhang, Kai; Zhang, Zhian; Lai, Yanqing.

In: Chemical Engineering Journal, Vol. 412, 128721, 15.05.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review