Won the Third Prize (Category: Innovation ) in the "Challenge Cup" National Competition – Hong Kong Regional Final, Hong Kong University Student Innovation and Entrepreneurship Competition 2017 organized by the Hong Kong New Generation Cultural Association.

An extremely safe and wearable solid state zinc ion battery

Zn-based batteries have attracted extensive attention due to their high theoretical energy density, safety, abundant resources, environmental friendliness, and low cost. They are a new energy storage and conversion technology with significant development potential and have been widely used in renewable energy and portable electronic devices. Considerable attempts have been devoted to improving the performance of Zn-based batteries. Specifically, battery cycle life and energy efficiency can be improved by electrolyte modification and the construction of highly efficient rechargeable Zn anodes. This review compiles the progress of the research related to Zn anodes and electrolytes, especially in the last five years. This review will introduce fundamental concepts, summarize recent development, and inspire further systematic research for high-performance Zn-based batteries in the future. 

https://www.sciopen.com/article_pdf/1589910638268375041.pdf

Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte

Aqueous batteries (ABs) have been regarded promising candidates for large-scale energy-storage applications due to their low-cost, high-safety, ease-of-fabrication, and high ionic conductivity. In contrast to standard rigid battery devices, flexible batteries can retain their functionality under deformation such as bending, twisting, rolling, or stretching. Therefore, the flexible solid-state ABs (FSABs) accelerates their practical application in wearable electronics. To date, numerous studies have focused on the optimization of the electrolyte, the electrode design, and the battery preparation processes to enhance both electrochemical performance and mechanical robustness. Although some reviews mention FSABs in a wider context, no exclusive review on FSABs for wearable electronics exists. Such a review is presented here, containing all aspects of the engineering, design and characterization of FSABs. The review presented gives an ample introduction to the basic principles of the energy storage mechanisms, the evaluation of the flexibility, and the design principles of FSABs. Furthermore, the recent progress in the electrochemical performance and mechanical flexibility of FSABs and their for practical applications in wearable electronic devices are comprehensively summarized. Finally, our insights regarding major challenges and prospective solutions in future research are provided to guide the further development of this fascinating and fast-evolving research area of FSABs. 

Zhang Daojun

Papers

Roadmap on the protective strategies of zinc anodes in aqueous electrolyte