Premium
Ultrafast Zinc–Ion–Conductor Interface toward High‐Rate and Stable Zinc Metal Batteries
Author(s) -
Yan Huibo,
Li Songmei,
Nan Yang,
Yang Shubin,
Li Bin
Publication year - 2021
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202100186
Subject(s) - materials science , overpotential , passivation , cathode , electrolyte , anode , zinc , dissolution , chemical engineering , electrochemistry , corrosion , inorganic chemistry , metallurgy , electrode , composite material , chemistry , layer (electronics) , engineering
The corrosion, passivation, and dendritic growth of Zn anodes and the dissolution of cathodes hinder rechargeable aqueous zinc ion battery (AZIB) rejuvenation. In this work, a versatile Zn‐based montmorillonite (MMT) interlayer is constructed to achieve a stable rechargeable AZIB. The Zn‐based MMT coating Zn foil (MMT‐Zn) is designed to enable a high transference number for Zn 2+ ( t + ≈ 0.82) and a freeway for Zn 2+ migration to alleviate corrosion and passivation and suppress Zn dendrites. The results show the MMT‐Zn symmetrical batteries render dendrite‐free plating/stripping with an ultra‐stable and small overpotential (50 mV) and a long‐life span (1000 cycles) at 1 mA cm −2 /0.25 mAh cm −2 and with 100 mV overpotential at ultrahigh current and capacity of 10 mA cm −2 /45 mAh cm −2 (over 1000 h, 77% depth of discharge). The MMT interlayer is applied to the MnO 2 cathode to inhibit the discharge product dissolving and diffusing into the electrolyte, so that the stability of the capacity is maintained. Thus, MMT‐Zn||MMT‐MnO 2 delivers an ultra‐long cycle life and ultra‐high capacity (1100 cycles with 191.5 mAh g −1 at 2 C). Hopefully, Zn‐based MMT interlayer can be considered to improve the electrochemical performance of the metal anodes and soluble cathodes.