Carbon-MEMS based rectangular channel microarrays embedded pencil trace for high rate and high-performance lithium-ion battery application

Gangadharan, Ananya and Kali, Suresh and Mamidi, Suresh and Pathak, Anil D. and Sharma, Chandra Shekhar (2021) Carbon-MEMS based rectangular channel microarrays embedded pencil trace for high rate and high-performance lithium-ion battery application. Materials Advances, 2 (23). pp. 7741-7750. ISSN 2633-5409

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Abstract

The miniaturization of a lithium-ion battery has been an aspiration in portable electronic devices and a possible method of implementation is by changing the electrode configuration from a 2D system to a 3D one. A carbon microelectromechanical system is a plausible execution of lithium-ion storage from 2D carbon films to 3D structures. However, the use of semiconducting silicon as a substrate for 3D structures and dendrite formation are hurdles. The present work describes the fabrication of 3D carbon rectangular channels on a pencil-traced stainless steel current collector and its utilization as the anode in a lithium-ion battery. Detailed physical and electrochemical studies demonstrate the advantage of this electrode in terms of reversible storage capacity and the establishment of a low resistance path for an electrochemical reaction. The cell exhibits an extraordinary capacity of 2000 mA h g-1 at 150 mA g-1 and it retained a capacity of ∼400 mA h g-1 even at 10 000 mA g-1 after 1750 cycles. Also, the full-cell prototype further proves the potency of this electrode. Additionally, the time-dependent Li-ion concentration gradient across the 3D carbon rectangular channels is estimated using a diffusion-limited model. These simulation studies clearly suggest that Li-ion diffusion is more favorable in 3D carbon rectangular channels than in 2D films. This journal is © The Royal Society of Chemistry.

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IITH Creators:

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

Item Type:

Article

Additional Information:

We acknowledge the financial support received from Ministry of Human Resources Development and Department of Heavy Industries, Govt. of India under IMPRINT scheme (Project 7035) to carry out this work.

Uncontrolled Keywords:

lithium-ion battery , carbon microelectromechanical system ,time-dependent Li-ion concentration .

Subjects:

Chemical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

08 Aug 2022 09:06

Last Modified:

08 Aug 2022 09:06