Nitrogen-Doped Carbon Fibers Embedded with Zincophilic Cu Nanoboxes for Stable Zn-Metal Anodes

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yinxiang Zeng
  • Peng Xiao Sun
  • Zhihao Pei
  • Qi Jin
  • Xitian Zhang
  • Le Yu

Detail(s)

Original languageEnglish
Article number2200342
Journal / PublicationAdvanced Materials
Volume34
Issue number18
Online published28 Mar 2022
Publication statusPublished - 5 May 2022
Externally publishedYes

Abstract

The practical application of Zn-metal anodes (ZMAs) is mainly impeded by the limited lifespan and low Coulombic efficiency (CE) resulting from the Zn dendrite growth and side reactions. Herein, a 3D multifunctional host consisting of N-doped carbon fibers embedded with Cu nanoboxes (denoted as Cu NBs@NCFs) is rationally designed and developed for stable ZMAs. The 3D macroporous configuration and hollow structure can lower the local current density and alleviate the large volume change during the repeated cycling processes. Furthermore, zincophilic Cu and in-situ-formed Cu–Zn alloy can act as homogeneous nucleation sites to minimize the Zn nucleation overpotential, further guiding uniform and dense Zn deposition. As a result, this Cu NBs@NCFs host exhibits high CE of Zn plating/stripping for 1000 cycles. The Cu NBs@NCFs–Zn electrode shows low voltage hysteresis and prolonged cycling life (450 h) with dendrite-free behaviors. As a proof-of-concept demonstration, a Zn-ion full cell is fabricated based on this Cu NBs@NCFs–Zn anode, which demonstrates decent rate capability and improved cycling performance. © 2022 Wiley-VCH GmbH.

Research Area(s)

  • Cu nanoboxes, hollow structures, N-doped carbon fibers, zincophilic sites, Zn-metal anodes

Citation Format(s)

Nitrogen-Doped Carbon Fibers Embedded with Zincophilic Cu Nanoboxes for Stable Zn-Metal Anodes. / Zeng, Yinxiang; Sun, Peng Xiao; Pei, Zhihao et al.
In: Advanced Materials, Vol. 34, No. 18, 2200342, 05.05.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review