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

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
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(2), 406; https://doi.org/10.3390/polym12020406
Received: 9 January 2020 / Revised: 6 February 2020 / Accepted: 7 February 2020 / Published: 11 February 2020
(This article belongs to the Special Issue Carbon-Based Polymer Nanocomposites for High-Performance Applications)
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: carbon nanotubes; polymer electrolyte; Li-ion micro-batteries; flexible anode; pre-lithiation carbon nanotubes; polymer electrolyte; Li-ion micro-batteries; flexible anode; pre-lithiation
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Sugiawati, V.A.; Vacandio, F.; Yitzhack, N.; Ein-Eli, Y.; Djenizian, T. Direct Pre-lithiation of Electropolymerized Carbon Nanotubes for Enhanced Cycling Performance of Flexible Li-Ion Micro-Batteries. Polymers 2020, 12, 406.

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