Uniform nucleation of sodium/lithium in holey carbon nanosheet for stable Na/Li metal anodes

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

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Author(s)

  • Yangyang Xie
  • Zexun Han
  • Junxian Hu
  • Liuyun Zhang
  • Aonan Wang
  • Shilei Chang
  • Jingyu Xu
  • Congyin Liu
  • Yanqing Lai
  • Zhian Zhang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number130959
Journal / PublicationChemical Engineering Journal
Volume427
Online published24 Jun 2021
Publication statusOnline published - 24 Jun 2021

Abstract

Na/Li metals have high theoretical capacity for high-energy-density metal batteries. However, it is difficult to achieve long lifespan due to uneven Na/Li nucleation, succeeding dendrite formation and short circuit. Recently, 3D scaffolds restraining Na/Li dendritic growth to reduce the local current density and improve the cycling stability has come forward. Introducing heteroatoms into matrixes are effective methods to further enhance the affinity to Na/Li atom and reduce nucleation barrier. Nevertheless, these 3D scaffolds that are propitious to completely restrain dendritic Na/Li is arduous, the methods proposed to fabricate 3D scaffolds are often complex and expensive. Herein, a facile route to uniform nucleation of Na/Li in holey carbon nanosheet (HCN) was proposed. The HCN offers high cycling stability of Na/Li plating/stripping (greater than 1000 cycle for Na metal anode and greater than 600 cycles for Li metal anode at 1.0 mA cm−2), attributing to the enhanced affinity to Na/Li atom and effective accommodation Na/Li deposition in the holey structure, demonstrated by DFT calculation. Moreover, Na metal based full cell exhibits excellent cycling performance with a high reversible specific capacity of 105.3 mAh g−1 and capacity retention of 88.4% coupled with Na3V2(PO4)2F3 cathode. Li metal based full cell also achieves a high remaining capacity of 142.6 mAh g−1, with a capacity retention of 74.5% when paired with commercial LiNi0.8Co0.1Mn0.1O2 cathode. This work offers a sight on design of electrode for long cycle and stable Na/Li metal anodes.

Research Area(s)

  • Affinity, Dendrite, Heteroatom, Holey carbon nanosheet, Nucleation

Citation Format(s)

Uniform nucleation of sodium/lithium in holey carbon nanosheet for stable Na/Li metal anodes. / Xie, Yangyang; Han, Zexun; Li, Huangxu; Hu, Junxian; Zhang, Liuyun; Wang, Aonan; Chang, Shilei; Xu, Jingyu; Liu, Congyin; Lai, Yanqing; Zhang, Zhian.

In: Chemical Engineering Journal, Vol. 427, 130959, 01.01.2022.

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