RETRACTED ARTICLE: Fabrication of flexible lithium-ion battery electrodes for wearable full battery with high electrochemical performance

• Published in: Journal of materials science. Materials in electronics Vol. 31; no. 9; pp. 6716 - 6725
• Main Author: Gao, Shu-Juan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2020
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Materials Science; Optical and Electronic Materials
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-03228-7

A new method is provided for preparing self-supporting flexible lithium-ion battery electrodes of a textile structure by using extrusion 3D printing technology, using a high concentration of polyvinylidene fluoride as a viscosity modifier, carbon nanotube as a conductive agent, lithium iron phosphate or lithium titanate as an electrode active material. A printable ink prepared in the paper, with an apparent viscosity of approximately 10 5  Pa s, exhibits significant shear thinning behavior, and the storage modulus platform value reaches a high value of 10 5  Pa; its excellent rheological properties are beneficial for the printing and solidification process. Electrochemical test results show that the two printing electrodes have a stable and well-matched charge–discharge specific capacity, so the assembled soft-packed lithium-ion battery displays a discharge specific capacity of up to 108 mAh·g −1 , and after bending the battery, the discharge specific capacity under the same current density (50 mA·g −1 ) is about 111 mAh·g −1 . The outstanding electrochemical properties open up possibilities for flexible and wearable electronics applications.