Photoresist Derived Carbon Films as High Capacity Anodes for Lithium Ion Battery

Kakunuri, M and Sharma, Chandra Shekhar (2014) Photoresist Derived Carbon Films as High Capacity Anodes for Lithium Ion Battery. ECS Transactions, 61 (7). pp. 37-43. ISSN 1938-5862

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An epoxy-based negative photoresist (SU-8) was spin-coated on stainless steel (SS) wafers followed by two-step pyrolysis in inert atmosphere to yield dense carbon films to be used as anodes for lithium (Li) ion batteries. The selection of SS wafer substrates was in accordance with commercial Li ion battery architecture. Cyclic voltammograms confirm the passive layer formation by electrolyte decomposition in the initial cycle. Galvanostatic charge/discharge experiments in the range 0.01-3 V performed at a C-rate=0.1 C confirms the reversible intercalation of Li ions and shows higher gravimetric reversible capacity for these photoresist-derived carbon films on SS wafer substrates than graphite (400 mAh/g vs. 372 mAh/g for graphite). This high reversible capacity may be attributed to high disorder in photoresist derived-carbon as characterized by X-ray diffraction and Raman spectroscopy.

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IITH Creators:
IITH CreatorsORCiD
Sharma, Chandra Shekhar
Item Type: Article
Additional Information: Authors acknowledge the discussions with Prof. Marc Madou, University of California, Irvine.
Subjects: Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 17 Mar 2015 09:20
Last Modified: 02 Jan 2020 05:43
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