A Flexible Solid-State Aqueous Zinc Hybrid Battery with Flat and High-Voltage Discharge Plateau

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Detail(s)

Original languageEnglish
Article number1902473
Journal / PublicationAdvanced Energy Materials
Volume9
Issue number46
Online published30 Oct 2019
Publication statusPublished - 13 Dec 2019

Abstract

The migration of zinc-ion batteries from alkaline electrolyte to neutral or mild acidic electrolyte promotes research into their flexible applications. However, discharge voltage of many reported zinc-ion batteries is far from satisfactory. On one hand, the battery voltage is substantially restricted by the narrow voltage window of aqueous electrolytes. On the other hand, many batteries yield a low-voltage discharge plateau or show no plateau but capacitor-like sloping discharge profiles. This impacts the battery's practicability for flexible electronics where stable and consistent high energy is needed. Herein, an aqueous zinc hybrid battery based on a highly concentrated dual-ion electrolyte and a hierarchically structured lithium-ion-intercalative LiVPO4F cathode is developed. This hybrid battery delivers a flat and high-voltage discharge plateau of nearly 1.9 V, ranking among the highest reported values for all aqueous zinc-based batteries. The resultant high energy density of 235.6 Wh kg-1 at a power density of 320.8 W kg-1 also outperforms most reported zinc-based batteries. A designed solid-state and long-lasting hydrogel electrolyte is subsequently applied in the fabrication of a flexible battery, which can be integrated into various flexible devices as powerful energy supply. The idea of designing such a hybrid battery offers a new strategy for developing high-voltage and high-energy aqueous energy storage systems.

Research Area(s)

  • flexible, high voltage, hybrid batteries, hydrogel electrolyte, zinc batteries, LITHIUM-ION BATTERY, ELECTROCHEMICAL STABILITY, ELECTROLYTE, DENSITY, INSERTION, CATHODE, LIVPO4F, LEVEL

Citation Format(s)

A Flexible Solid-State Aqueous Zinc Hybrid Battery with Flat and High-Voltage Discharge Plateau. / Liu, Zhuoxin; Yang, Qi; Wang, Donghong; Liang, Guojin; Zhu, Youhuan; Mo, Funian; Huang, Zhaodong; Li, Xinliang; Ma, Longtao; Tang, Tiancheng; Lu, Zhouguang; Zhi, Chunyi.

In: Advanced Energy Materials, Vol. 9, No. 46, 1902473, 13.12.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal