Ultra-High-Rate Sodium-Ion Energy Storage Materials and Devices

Lecture Topic: Ultra-High-Rate Sodium-Ion Energy Storage Materials and Devices
Expert: Wei Qiulong
Date: November 3, 2025
Time: 10:00
Location: Lecture Hall 1517, Energy and Power Building
Organizer: Energy Research Institute

Speaker Profile:
Wei Qiulong is an Associate Professor at the College of Materials, Xiamen University, and a recipient of the Fujian Province "Chuying Plan" for Outstanding Young Talents. He earned his Ph.D. in 2016 from the School of Materials Science and Engineering at Wuhan University of Technology under the supervision of Professors Zhang Qingjie and Mai Liqiang. From 2016 to 2019, he conducted postdoctoral research in the group of Professor Bruce Dunn in the Department of Materials Science and Engineering at the University of California, Los Angeles. His research primarily focuses on high-power electrochemical energy storage materials and devices, including sodium-ion batteries and supercapacitors. He has led projects such as the National Natural Science Foundation General and Youth Programs, and the Fujian Provincial Natural Science Foundation. He has published over 150 SCI papers in journals including Nature Communications, Advanced Materials, Journal of the American Chemical Society, and Angewandte Chemie International Edition, with several featured as cover highlights and recognized as ESI Highly Cited Papers. His work has been cited more than 16,000 times, and he holds 23 authorized invention patents. He serves as a Young Editorial Board Member for journals such as Chinese Chemical Letters, Rare Metals, and Carbon Neutralization.
Research Expertise: High-power electrochemical energy storage materials and devices.

Lecture Summary:
Sodium-ion energy storage technology offers advantages such as abundant resources, sustainability, low cost, high safety, high energy conversion efficiency, and environmental friendliness, making it an ideal candidate for large-scale energy storage. However, due to the larger ionic radius of sodium ions compared to lithium ions, sodium ions diffuse more slowly within electrode active materials, and their insertion/extraction processes often lead to structural degradation of the electrode materials. This results in poor rate performance and short cycle life for conventional sodium storage electrodes. To address these challenges, pseudocapacitive materials with rapid charge/discharge rates and high specific capacity have garnered significant attention, as they hold promise for achieving a balance of high energy density, high power density, and long-term cycling stability. This lecture will focus on the design of electrode materials based on the sodium superionic conductor (NASICON) structure, the exploration of pseudocapacitive sodium storage mechanisms, performance optimization of related electrode materials, and strategies for constructing sodium-ion capacitors that combine high energy density with high power density. The talk aims to provide new insights for advancing the application of sodium-ion energy storage technology in high-power energy storage fields.

Faculty and students are welcome to attend!