Pencil lead based low cost and binder-free anode for lithium-ion batteries: effect of different pencil grades on electrochemical performance

Pandey, Alok K. and Mamidi, Suresh and Sharma, Chandra Shekhar (2021) Pencil lead based low cost and binder-free anode for lithium-ion batteries: effect of different pencil grades on electrochemical performance. Proceedings of the Indian National Science Academy, 87 (1). pp. 156-162. ISSN 0370-0046

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Abstract

We depict a facile and one step approach to fabricate a high capacity anode by drawing pencil lead onto the current collector. For efficient loading and adhesion, stainless steel substrate used as a collector is roughened using sand paper before drawing the pencil lead onto it. As pencil lead comprises graphite-clay (primarily silica) composites, graphite provided cyclic stability due to lithium ion intercalation while SiO2 resulted in higher reversible capacity by facilitating alloying and de-alloying of lithium with silicon. To evaluate their role further onto the anodic performance, three different pencil grades (4H, 4B and 10B) are used which varied in graphite and silica composition. A detailed comparative analysis of their electrochemical performances is done and is further correlated to their structural parameters. Importantly, the fabrication of anode is not only facile but also is solvent and binder free and is also scalable for real application. Graphic Abstract: [Figure not available: see fulltext.] © 2021, Indian National Science Academy.

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IITH Creators:

IITH Creators	ORCiD
Sharma, Chandra Shekhar	https://orcid.org/0000-0003-3821-1471

Item Type:

Article

Additional Information:

Authors acknowledge MHRD and Department of Heavy Industries, Govt. of India for the financial support through IMPRINT Project 7035 to carry out this work.

Uncontrolled Keywords:

Anode; Binder-free; Graphite–Silica composite; Lithium-ion battery; Pencil lead; Solvent-free

Subjects:

Chemical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

12 Sep 2022 12:50

Last Modified:

12 Sep 2022 12:50