Journal Article

FZJ-2022-01488

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dendrite‐Free Zinc Deposition Induced by Zinc Phytate Coating for Long‐life Aqueous Zinc Batteries

Du, L. ; Hou, X.FZJ* ; Yang, X. ; Siozios, V. ; Yan, B.FZJ* ; Ju, X. ; Paillard, E. ; Winter, M.FZJ* ; Placke, T. ; Li, J. (Corresponding author)FZJ*

2022
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/31274  doi:10.1002/batt.202100376

Abstract: Rechargeable aqueous zinc batteries (AZBs) have been recognized as attractive energy storage devices because of their intrinsic superiorities, e.g., high safety, low material cost and environmental benignity. However, challenges such as dendrite formation on the surface of Zn anode, poor reversibility of Zn plating/stripping and short circuit of the cell, having detrimental impact on cycle life and safety, hinder their further development. Herein, we design an artificial solid electrolyte interphase (SEI) layer for the Zn anode by coating it with a zinc phytate (ZP) layer via a facile acid-etching approach. Since the ZP layer can guide uniform Zn deposition under the layer without dendrite formation and maintain a smooth interface between separator and electrode, the symmetric cell with a modified Zn electrode exhibits excellent cycling stability and low polarization voltage. Moreover, compared to the full cell employing a bare Zn anode (MnO 2 /carbon nanofibers (CNFs) || Zn), the one with modified Zn anode (MnO 2 /CNFs || ZP-Zn) delivers much better long-term cycling stability with a capacity retention of 80.2% after 1000 cycles a 0.5 A g -1 . The coating via acid etching method offers a practical technique for further development of AZBs.

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Contributing Institute(s):

1. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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