Research on Aqueous Rechargeable Batteries—2nd Edition

A special issue of Batteries (ISSN 2313-0105). This special issue belongs to the section "Aqueous Batteries".

Deadline for manuscript submissions: 15 September 2025 | Viewed by 1076

Special Issue Editor


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Guest Editor
Department of Chemistry, University of Puerto Rico, Recinto de Rio Piedras, San Juan, Puerto Rico
Interests: aqueous batteries; solid-state batteries; Li-ion batteries
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Special Issue Information

Dear Colleagues,

The use of aqueous rechargeable batteries for energy storage has attracted growing interest due to their advantages of being inexpensive and highly safety. The ionic conductivity of aqueous electrolytes is generally one order of magnitude higher than that of non-aqueous electrolytes, which endows aqueous batteries with high power capabilities. Furthermore, aqueous batteries can also demonstrate high voltage and high energy density, thanks to the development of highly concentrated electrolytes and aqueous–non-aqueous hybrid electrolytes.

To date, substantial progress has been made in the field of aqueous battery development, including on their reaction mechanisms, electrode materials, electrolytes, and full-cell assembly. However, there exist certain pitfalls and many challenges in aqueous battery research. To better promote the development of aqueous batteries, we invite research articles, reviews, and perspectives from researchers all over the world.

Topics include, but are not limited to:

Aqueous batteries with various charge carriers (monovalent, multivalent, and anions);

Novel working mechanisms or configurations of aqueous batteries;

Electrode materials, electrolytes, separators, etc.;

The differences between non-aqueous and aqueous batteries;

Pitfalls in aqueous battery research;

Challenges that hinder aqueous battery development.

Dr. Xianyong Wu
Guest Editor

Manuscript Submission Information

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Keywords

  • energy storage
  • aqueous rechargeable batteries
  • charge carriers
  • reaction mechanisms
  • electrode materials
  • aqueous electrolytes
  • pitfalls and challenges

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Published Papers (1 paper)

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Research

8 pages, 1536 KiB  
Communication
Electrochemical Studies of Metal Phthalocyanines as Alternative Cathodes for Aqueous Zinc Batteries in “Water-in-Salt” Electrolytes
by Wentao Hou, Andres Eduardo Araujo-Correa, Shen Qiu, Crystal Otero Velez, Yamna D. Acosta-Tejada, Lexis N. Feliz-Hernández, Karilys González-Nieves, Gerardo Morell, Dalice M. Piñero Cruz and Xianyong Wu
Batteries 2025, 11(3), 88; https://doi.org/10.3390/batteries11030088 - 22 Feb 2025
Viewed by 855
Abstract
Aqueous zinc batteries are emerging technologies for energy storage, owing to their high safety, high energy, and low cost. Among them, the development of low-cost and long-cycling cathode materials is of crucial importance. Currently, Zn-ion cathodes are heavily centered on metal-based inorganic materials [...] Read more.
Aqueous zinc batteries are emerging technologies for energy storage, owing to their high safety, high energy, and low cost. Among them, the development of low-cost and long-cycling cathode materials is of crucial importance. Currently, Zn-ion cathodes are heavily centered on metal-based inorganic materials and carbon-based organic materials; however, the metal–organic compounds remain largely overlooked. Herein, we report the electrochemical performance of metal phthalocyanines, a large group of underexplored compounds, as alternative cathode materials for aqueous zinc batteries. We discover that the selection of transition metal plays a vital role in affecting the electrochemical properties. Among them, iron phthalocyanine exhibits the most promising performance, with a reasonable capacity (~60 mAh g−1), a feasible voltage (~1.1 V), and the longest cycling (550 cycles). The optimal performance partly results from the utilization of zinc chloride “water-in-salt” electrolyte, which effectively mitigates material dissolution and enhances battery performance. Consequently, iron phthalocyanine holds promise as an inexpensive and cycle-stable cathode for aqueous zinc batteries. Full article
(This article belongs to the Special Issue Research on Aqueous Rechargeable Batteries—2nd Edition)
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