Using Hemoglobin as a Performance Enhancer in Rechargeable Lithium-Oxygen Batteries

Samajdar, RN and George, SM and Bhattacharyya, AJ (2019) Using Hemoglobin as a Performance Enhancer in Rechargeable Lithium-Oxygen Batteries. In: Journal of Physical Chemistry C .

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Abstract

We demonstrate here that hemoglobin, a biological oxygen binder/transporter, can be used as a performance-enhancing additive in nonaqueous lithium-oxygen batteries. In a fashion similar to the way hemoglobin binds and transports oxygen in the human blood, it can bind and transport oxygen in the electrolyte solution in a conventional lithium-oxygen battery. Binding and transport of oxygen into the soluble electrolyte phase enhance the efficiency of oxygen reduction reactions (ORRs) occurring at the air cathode by preventing the accumulation of solid insulating discharge products at the cathode site. We observe stable galvanostatic cycling, high specific capacity, and low polarization in the cell in the presence of hemoglobin. Electrochemical impedance spectroscopy indicates low interfacial resistance even after several rounds of galvanostatic charge-discharge cycles. We thus propose the use of oxygen-binding natural biomolecules as possible redox mediators for energy-harvesting systems utilizing oxygen electrochemistry in the future.

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry C
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to the American Chemical Society.
Keywords:	Binding energy; Cathodes; Electrochemical impedance spectroscopy; Electrolytes; Electrolytic reduction; Energy harvesting; Hemoglobin; Lithium; Lithium batteries; Molecular biology, Energy harvesting systems; Galvanostatic charge discharges; Galvanostatic cycling; High specific capacity; Interfacial resistances; Lithium-oxygen batteries; Oxygen reduction reaction; Performance enhancing, Oxygen
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Date Deposited:	06 Dec 2022 07:07
Last Modified:	06 Dec 2022 07:07
URI:	https://eprints.iisc.ac.in/id/eprint/78273

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