Ren Yuanyuan, Liu Limin, Wang Zhen, Li De, Chen Yong
State Key Laboratory of Marine Resource Utilization in South China Sea, Key Laboratory of Research on Utilization of Si-Zr-Ti Resources of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
Guangdong Key Laboratory for Hydrogen Energy Technologies; School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China.
ACS Appl Mater Interfaces. 2022 May 11;14(18):20981-20987. doi: 10.1021/acsami.2c02231. Epub 2022 Apr 29.
Compared with traditional centimeter-level electrodes, microelectrodes exhibit a small reaction area, high sensitivity, fast mass transfer rate, and low polarization current. However, current microelectrode preparation processes are very complicated and costly. Herein, we proposed a facile and universal method for fabricating single-particle microelectrodes. In the precursor solution, polyvinyl alcohol and ammonia were introduced as the polymeric binder and pore-forming agent, respectively. Through spaying-drying-sintering processes, the single-particle microelectrodes were successfully prepared for LiTiO (LTO), LiCrTiO (LCTO), and LiFePO/C (LFP/C), which showed excellent electrochemical properties. Furthermore, the single-particle microelectrode can be adopted to study the electrochemical oscillations of Li-ion batteries and assemble a full-cell microbattery as a potential next-generation microscale power source.
