Rational design of zinc powder anode with high utilization and long cycle life for advanced aqueous Zn-S batteries

Jianbo Li, Zexiao Cheng, Zhen Li, Yunhui Huang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Aqueous zinc-sulfur (Zn-S) batteries are regarded as excellent candidates for energy storage applications due to their low cost, non-toxicity, and high theoretical energy density. However, the low utilization of the traditional thick foil-type Zn anode would severely restrict the overall energy density of Zn-S batteries. Herein, a mechanically and chemically stable powder-Zn/indium (pZn/In) anode with finite Zn loading was designed and constructed for enhancing the cycle stability of aqueous Zn-S batteries. Notably, the bifunctional In protective layer can inhibit the corrosion rate of highly active pZn and homogenize the Zn2+ flux during Zn plating/stripping. As a result, the obtained pZn/In anode exhibits a greatly improved cyclability of over 285 h even under a much harsh test condition (10 mA cm−2, 2.5 mA h cm−2, Zn utilization rate: ∼38.5%). Furthermore, when assembled with an S-based cathode at a negative/positive (N/P) capacity ratio ∼2, the full cell delivers a high initial specific capacity of ∼803 mA h g−1 and operates stably for over 300 cycles at 2C with a low capacity fading rate of ∼0.17% per cycle.
Original languageEnglish (US)
Pages (from-to)2436-2444
Number of pages9
JournalMaterials Horizons
Volume10
Issue number7
DOIs
StatePublished - Mar 27 2023
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-20

ASJC Scopus subject areas

  • Mechanics of Materials
  • Process Chemistry and Technology
  • General Materials Science
  • Electrical and Electronic Engineering

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