工学院专题学术讲座  | Minshen Zhu:  Tiny Robots and Sensors Need Tiny Batteries

时间：2022年8月24日（周三） 15:00-16:30

Time: 15:00-16:30, Wednesday, August 24, 2022

线上：ZOOM ID 861 7685 3925

Online: ZOOM ID 861 7685 3925

主持人: 西湖大学工学院 王建辉 博士

Host: Dr. Jianhui Wang, Assistant Professor, Westlake University

主讲嘉宾/Speaker：

Dr.  Minshen Zhu

Research Group Leader

Technische Universität Chemnitz

主讲人简介/Biography:

Minshen Zhu studied material science and engineering at Beijing University of Chemical Technology (BEng. 2013) and City University of Hong Kong (MSc. 2014). In 2017, Zhu received his PhD from City University of Hong Kong and subsequently joined Leibniz institute for solid state and materials research Dresden. Starting in 2018, Zhu is leading a research group to develop microbatteries suitable for on-chip integration. In 2022, Zhu moved to Technische Universität Chemnitz and received the starting grant (1.5 million euros) from European Research Council to further develop on-chip microbatteries. Zhu has published more than 80 papers with a h-index of 46 (google scholar).

讲座摘要/Abstract:

Smart dust created by miniaturizing computers to less than one millimeter is a powerful tool to extend the perception ranges of sensors and microrobots. To sufficiently miniaturize computers, some form of wireless power replaces batteries; however, the intermittence of wireless power limits the ability of smart dust to reach its full potential. On-chip batteries are out of competition for onboard power supply because their minimum size to maintain an adequate energy supply, a few millimeters in at least one dimension, is too large for smart dust. The core challenge to achieving high energy density in a sub-millimeter battery is incorporating enough electrode materials while shrinking the battery size [1]. The layered structure of batteries itself imposes a thickness limitation. This presentation will introduce a way to bypass such obstacles. Self-assembly of thin films into a Swiss roll, known as micro-origami, allows for the high-mass-loading of electrode materials on an area less than one millimeter across. A 0.75-mm2 Swiss-roll battery delivers a footprint capacity of more than 1 mAh/cm2 [2], which is only reached by batteries larger than 1-mm2 previously. The Swiss-roll batteries evev enter the regime of sub-0.1-mm2 and show encouraging prospects: a high footprint capacity of 0.3 to 0.5 mAh/cm2 [3]. The Swiss-roll structure opens new possibilities to develop smart dust available at anytime and anywhere.

讲座联系人/Contact:

王柯宜

wangkeyi@westlake.edu.cn