The Research and Postgraduate Centre congratulates Prof. Zheng Jin-Cheng the Director of the Innovation and Entrepreneurship Centre, and his collaborators (Yang Dai et al), for the recent research article published in Nano-Micro Letters, a SCI Q1 journal with the latest impact factor of 31.6.
The article, titled “Stable Cycling of All-Solid-State Lithium Batteries Enabled by Cyano-Molecular Diamond Improved Polymer Electrolytes” states that the long-term cycling performance and practical application of all-solid-state lithium metal batteries are hindered by the interfacial instability of poly(ethylene oxide) (PEO)-based electrolytes. The study shows that incorporating 1-adamantanecarbonitrile into PEO-based electrolytes significantly improves their performance. The additive strengthens anion binding and weakens Li+-EO coordination, enhancing Li+ conductivity and electrochemical stability. It also reduces lithium dendrite growth and regulates LiF formation at the interfaces, boosting stability at high voltages and protecting electrodes. As a result, Li/Li symmetric cells can endure over 2000 hours of lithium plating/stripping, and all-solid-state batteries with 1-adamantanecarbonitrile exhibit stable cycling for 1000 cycles with capacity retention rates of 85% and 80% for LFP/Li and LiNi0.8Mn0.1Co0.1O2/Li, respectively. This work provides a potential avenue for designing high-performance polymer all-solid-state batteries with a long lifespan.
This work is a collaborative work led by research groups of Prof. Yang Dai, Prof. Jian Gu, and Prof. Hao Yan at Shanghai University, Prof. Tinglu Song at Beijing Institute of Technology, and Prof. Zheng Jincheng at Xiamen University (main campus) & Xiamen University Malaysia.
Full article can be accessed at https://link.springer.com/article/10.1007/s40820-024-01415-3