The development of low-cost and high-safety zinc-ion batteries (ZIBs) has been extensively discussed and reviewed in recent years, but the work on the comprehensive discussion and perspectives in developing zinc-ion electrolytes is still relatively lacking. Faced with critical challenges and bottlenecks practically, the viability of ZIBs critically depends on the development of suitable electrolytes and their practical considerations. In this review, a systematic summary with regard to the basic characteristics of zinc-ion electrolytes facing different issues from optimization strategies to the fundamental science of electrolyte/electrode interfaces (EEIs), particularly in the feasible modifications and advanced characterizations of EEIs, has been put forward. Due to the lack of consideration of the practical issues in major academic studies, we have particularly highlighted aspects that mainly focus on the choice of the electrolyte system, dosage of liquid and fluid electrolytes, status of gel and all-solid electrolytes, together with other concerns related to the electrolytes. The final section proposes significant perspectives to guide and promote the development of zinc-ion electrolytes.

Fundamentals and perspectives in developing zinc-ion battery electrolytes: a comprehensive review

Transition metal based battery-type electrodes in hybrid supercapacitors: A review

Recent Advances in Vanadium-Based Aqueous Rechargeable Zinc-Ion Batteries

Aqueous zinc ion battery has emerged as a promising alternative technology for large-scale energy storage due to their low cost, natural abundance, and high safety features. However, the sluggish k...

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Impacts of Oxygen Vacancies on Zinc Ion Intercalation in VO2.

Dendrite-free Zn anode with dual channel 3D porous frameworks for rechargeable Zn batteries

V2O5 nanopaper as a cathode material with high capacity and long cycle life for rechargeable aqueous zinc-ion battery

Recent Progress on Advanced Imaging Techniques for Lithium-Ion Batteries

Monosodium Glutamate, an Effective Electrolyte Additive to Enhance Cycling Performance of Zn Anode in Aqueous Battery

A Li–Al–O Solid-State Electrolyte with High Ionic Conductivity and Good Capability to Protect Li Anode

It has long been a global imperative to develop high‐energy‐density lithium‐ion batteries (LIBs) to meet the ever‐growing electric vehicle market. One of the most effective strategies for boosting the energy density of LIBs is to increase the output voltage, which largely depends upon the cathode materials. As the most‐promising cathodes for high‐voltage LIBs (>4 V vs Li/Li+), four major categories of cathodes including lithium‐rich layered oxides, nickel‐rich layered oxides, spinel oxides, and high‐voltage polyanionic compounds still encounter severe challenges to realize the improvement of output voltage while maintaining high capacity, fast rate capability, and long service life. This review focuses on the key links in the development of high‐voltage cathode materials from the lab to industrialization. First, the failure mechanisms of the four kinds of materials are clarified, and the optimization strategies, particularly solutions that are easy for large‐scale production, are considered. Then, to bridge the gap between lab and industry, the cost management, safety assessment, practical battery‐performance evaluation, and sustainability of the battery technologies, are discussed. Finally, tough challenges and promising strategies for the commercialization of high‐voltage cathode materials are summarized to promote the large‐scale application of LIBs with high energy densities.

Yun Zhong

Papers

V2O5 nanopaper as a cathode material with high capacity and long cycle life for rechargeable aqueous zinc-ion battery

Recent Progress on Advanced Imaging Techniques for Lithium-Ion Batteries

Monosodium Glutamate, an Effective Electrolyte Additive to Enhance Cycling Performance of Zn Anode in Aqueous Battery

A Li–Al–O Solid-State Electrolyte with High Ionic Conductivity and Good Capability to Protect Li Anode

Building Practical High‐Voltage Cathode Materials for Lithium‐Ion Batteries