Unlocking High-Performance Ammonium-Ion Batteries : Activation of In-Layer Channels for Enhanced Ion Storage and Migration

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

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Author(s)

  • Xiangyong Zhang
  • Hua Wei
  • Baohui Ren
  • Jingjing Jiang
  • Guangmeng Qu
  • Jinlong Yang
  • Guangming Chen
  • Zhuoxin Liu

Detail(s)

Original languageEnglish
Article number2304209
Journal / PublicationAdvanced Materials
Publication statusOnline published - 4 Jul 2023

Abstract

Ammonium-ion batteries, leveraging non-metallic ammonium ions, have arisen as a promising electrochemical energy storage system; however, their advancement has been hindered by the scarcity of high-performance ammonium-ion storage materials. In this study, an electrochemical phase transformation approach is proposed for the in situ synthesis of layered VOPO4·2H2O (E-VOPO) with predominant growth on the (200) plane, corresponding to the tetragonal channels on the (001) layers. The findings reveal that these tetragonal in-layer channels not only furnish NH4+ storage sites but also enhance transfer kinetics by providing rapid cross-layer migration pathways. This crucial aspect has been largely overlooked in previous studies. The E-VOPO electrode exhibits exceptional ammonium-ion storage performance, including significantly increased specific capacity, enhanced rate capability, and robust cycling stability. The resulting full cell can be stably operated for 12 500 charge–discharge cycles at 2 A g−1 for over 70 days. The proposed approach offers a new strategy for meticulously engineering electrode materials with facilitated ion storage and migration, thereby paving the way for developing more efficient and sustainable energy storage systems. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • ammonium-ion batteries, aqueous batteries, energy storage mechanisms, in-layer channels, layered electrodes

Citation Format(s)

Unlocking High-Performance Ammonium-Ion Batteries: Activation of In-Layer Channels for Enhanced Ion Storage and Migration. / Zhang, Xiangyong; Wei, Hua; Ren, Baohui et al.
In: Advanced Materials, 04.07.2023.

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