journal article·2025-07Open access

Thermodynamic and kinetic insights for manipulating aqueous Zn battery chemistry: Towards future grid-scale renewable energy storage systems

Yajun Zhao, Yueyang Wang, Jinze Li, Jiawei Xiong, Qi Li, Kovan Khasraw Abdalla, Yi Zhao, Zhao Cai, Xiaoming Sun

eScience· Volume 5· Issue 4

Abstract

The invention of aqueous Zn batteries (AZBs) traces back to the eighteenth century. Recently, however, AZBs have been undergoing a renaissance due to the urgent need for renewable energy storage devices that are intrinsically safe, inexpensive, and environmentally benign. The escalating demand for high-energy, fast-charging AZBs, particularly in grid-scale energy storage systems, necessitates a profound exploration of the fundamental aspects of electrode chemistries. In particular, a comprehensive understanding from the viewpoints of thermodynamics and kinetics is crucial, with the aim of advancing the development of next-generation AZBs that have high power and energy densities. However, clarification about the fundamental issues in AZB chemistry has yet to be achieved. This review offers a thorough exploration of the thermodynamics and dynamic mechanisms at the anode and cathode, with the aim of helping researchers achieve high-performance AZBs. The inherent challenges and corresponding strategies related to electrode thermodynamic and dynamic optimization are summarized, followed by insights into future directions for developing high-energy, fast-charging AZBs. We conclude by considering the future prospects for AZBs and offering recommendations for making further advancements in discovering new redox chemistries, optimizing electrode architectures, and achieving integrated battery designs, all of which are considered essential and time-sensitive for making high-energy, fast-charging, and durable AZBs a reality. • This Review provides the fundamental relationship between thermodynamic/dynamic reaction and electrochemical performance of AZBs. • Current challenges and rational strategies for AZBs are summarized from three-levels: materials chemistry to electrode structure, and battery systems. • Insights and prospects for the fabrication of aqueous zinc-ion batteries (AZBs) in practical applications are discussed.
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OpenAlex topics: Advanced battery technologies research · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication

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