Hydrogels with amphiphilic chains and targeted adhesion for high-areal-capacity zinc batteries

Chuan LI, Jiaxiong ZHU, Rong ZHANG, Zhuoxi WU, Huilin CUI, Ze CHEN, Shaoce ZHANG, Weilan ZHANG, Zhaodong HUANG, Zengxia PEI*, Chunyi ZHI

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

16 Citations (Scopus)

Abstract

Two impending problems of practical rechargeable aqueous zinc metal batteries (RZMBs) are the underutilization of high-loading materials at the cathode side and zinc dendrite at the anode side. Herein, based on hydrophobic association, we report the amphiphilic hydrogel electrolytes featured by unique hydrophobic association and target permeation properties, which enables full utilization of dense thick cathode materials with loading masses approaching a practical level. Meanwhile, the ion tunnels within the amphiphilic hydrogel electrolytes can regulate Zn2+ migration and homogenize interfacial deposition at different current densities, rendering a smooth and compact Zn morphology in a dendrite- and passivation-free manner. Meriting these advantages of the amphiphilic hydrogel electrolytes, the assembled Zn||MnO2 batteries delivered a high areal capacity of >2.0 mAh cm−2 for 200 cycles at a large MnO2 loading mass up to 16.8 mg cm−2. Further, large-sized (up to 200 cm−2) Zn||MnO2 pouch batteries were demonstrated. This work opens a new avenue toward realizing viable RZMBs with practical large areal capacities and sizes.

Original languageEnglish
Article number102858
JournalEnergy Storage Materials
Volume60
Early online date16 Jun 2023
DOIs
Publication statusPublished - Jun 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Funding

This research was supported by financial support from the Australian Research Council Discovery Early Career Researcher Award ( DE200101669 ). This work was supported in part by InnoHK Project on [Project 1.3 - Flexible and Stretchable Technologies (FAST) for monitoring of CVD risk factors: Sensing and Applications] at Hong Kong centre for Cerebro-cardiovascular Health Engineering (COCHE) and CRF by RGC under C1002–21 G.

Keywords

  • Amphiphilic polymer chains
  • High-areal-capacity
  • Hydrogels with targeted adhesion
  • Zinc batteries

Fingerprint

Dive into the research topics of 'Hydrogels with amphiphilic chains and targeted adhesion for high-areal-capacity zinc batteries'. Together they form a unique fingerprint.

Cite this