Volume 32 Issue 1 - January 3, 2020 PDF
Material Design and Performance Investigation for Developing Advanced High-Energy-Density Rechargeable Batteries
Department of Materials Science and Engineering ,National Cheng Kung University
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【Most Young Scholars Grant -Einstein Program】Special Issue

The commercialization of lithium-ion batteries is one of the great successes of modern energy-storage technology. With high reliability and fully-developed battery techniques, lithium-ion batteries currently dominate the market for portable energy storage. Encountering the increasing energy consumption, it is desirable to explore a new, environmentally compatible battery system that has high energy density at an affordable manufacturing and operational costs. Focusing on future energy technology, we are now systemically studying the battery electrochemistry and performance development of high-energy-density lithium-sulfur batteries. The overall goal of this project is to demonstrate practical lithium-sulfur batteries. We propose a new concept in designing lithium-sulfur batteries based on its conversion battery chemistry, such as designing new customized electrodes and developing polysulfides as catholytes. With a more reliable lithium-sulfur battery cathode, we will overcome the scientific/technical challenges by realizing high sulfur loading/content with limited excess lithium in a lean electrolyte cell. The lithium-sulfur cells with practical necessary designed parameters would demonstrate the real lithium-sulfur performance and electrochemical characteristics, which enable the cells to receive essential modification for entering the commercial battery market. Besides the lithium-sulfur battery chemistry, we subsequently will extend our battery design and relative technique to explore new metal-sulfur batteries with high abundant metal anodes (sodium and potassium) and with high valent metal anodes (calcium, magnesium, and aluminum). By conducting this five-year research proposal, our progress will illustrate that the approaches presented in this proposal are inexpensive and offer practically viable solutions for the lithium-sulfur technology commercialization and for the next-generation metal-sulfur battery development.

It is my honor to be granted by the Ministry of Science and Technology and the Ministry of Education for Einstein Program and Yushan (Young) Scholar Program, respectively. We sincerely appreciate the support from all my wonderful colleagues at the Department of Materials Science and Engineering and National Cheng Kung University. We look forward to do better and novel researches in my home country, TAIWAN, and educate outstanding R & D talents in TAIWAN’s energy storage technology.
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