Direct Pre-lithiation of Electropolymerized Carbon Nanotubes for Enhanced Cycling Performance of Flexible Li-Ion Micro-Batteries

Vinsensia Ade Sugiawati; Florence Vacandio; Neta Yitzhack; Yair Ein-Eli; Thierry Djenizian

doi:10.3390/polym12020406

Direct Pre-lithiation of Electropolymerized Carbon Nanotubes for Enhanced Cycling Performance of Flexible Li-Ion Micro-Batteries

Polymers (Basel). 2020 Feb 11;12(2):406. doi: 10.3390/polym12020406.

Authors

Vinsensia Ade Sugiawati¹, Florence Vacandio², Neta Yitzhack³, Yair Ein-Eli^{3

4}, Thierry Djenizian^{1

5}

Affiliations

¹ Mines Saint-Etienne, Center of Microelectronics in Provence, Department of Flexible Electronics, F-13541 Gardanne, France.
² CNRS, Electrochemistry of Materials Research Group, Aix Marseille Université, MADIREL, UMR 7246, F-13397 Marseille CEDEX 20, France.
³ Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
⁴ The Nancy & Stephan Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
⁵ Al-Farabi Kazakh National University, Center of Physical-Chemical Methods of Research and Analysis, Tole bi str., 96A Almaty, Kazakhstan.

Abstract

Carbon nanotubes (CNT) are used as anodes for flexible Li-ion micro-batteries. However, one of the major challenges in the growth of flexible micro-batteries with CNT as the anode is their immense capacity loss and a very low initial coulombic efficiency. In this study, we report the use of a facile direct pre-lithiation to suppress high irreversible capacity of the CNT electrodes in the first cycles. Pre-lithiated polymer-coated CNT anodes displayed good rate capabilities, studied up to 30 C and delivered high capacities of 850 mAh g^-1 (313 μAh cm^-2) at 1 C rate over 50 charge-discharge cycles.

Keywords: Li-ion micro-batteries; carbon nanotubes; flexible anode; polymer electrolyte; pre-lithiation.