DLP printing of a flexible micropattern Si/PEDOT:PSS/PEG electrode for lithium-ion batteries

Xinliang Ye; Chong Wang; Li Wang; Bingheng Lu; Fangliang Gao; Dan Shao

doi:10.1039/d2cc01626e

DLP printing of a flexible micropattern Si/PEDOT:PSS/PEG electrode for lithium-ion batteries

Chem Commun (Camb). 2022 Jul 7;58(55):7642-7645. doi: 10.1039/d2cc01626e.

Authors

Xinliang Ye^{1

2}, Chong Wang¹, Li Wang², Bingheng Lu², Fangliang Gao³, Dan Shao⁴

Affiliations

¹ School of Mechanical Engineering, Dongguan University of Technology, DongGuan 523808, China. yxl5194@163.com.
² Mirco- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering (Xi'an Jiaotong University), Xi'an 710049, China. wanglime@mail.xjtu.edu.cn.
³ Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy Materials, Institute of Semiconductors, South China Normal University, Guangzhou 510631, China. gaofl@m.scnu.edu.cn.
⁴ Guangdong Provincial Key Laboratory of Battery Safety, Guangzhou Institute of Energy Testing, Guangzhou, Guangdong 511447, China. shaod1005@163.com.

PMID: 35723490
DOI: 10.1039/d2cc01626e

Abstract

We report on a free-standing 3D-printed Si/PEDOT:PSS/PEG electrode based on silicon nanoparticles (Si) as an active material for lithium-ion batteries (LIBs) that are fabricated by 3D printing via digital light processing (DLP). Compared with the Si electrode prepared by the traditional method, the 3D-printed Si/PEDOT:PSS/PEG electrode developed by DLP preserves a specific discharge capacity of 1658.4 mA h g^-1, with a capacity fade of 0.3% per cycle at a current density of 800 mA g^-1 after 125 cycles. This helps in maintaining its structural integrity and enables it to exhibit significantly high flexibility with an enhanced load of 4.2 mg cm^-2. The resulting free-standing electrode shows that 3D printing has significant potential for application to a variety of LIB technologies.