Comparative electrochemical performance characteristics of aluminium-air cell employing seawater and NaCl electrolytes

Mohd Hatta, Maziati Akmal and Othman, Raihan and Ani, Mohd Hanafi (2013) Comparative electrochemical performance characteristics of aluminium-air cell employing seawater and NaCl electrolytes. Advanced Materials Research, 701. pp. 314-318. ISSN 1022-6680

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Abstract

The electrochemical performance of Al-air cell employing seawater and NaCl electrolyte of various concentrations has been investigated. The open circuit voltage and discharge capacity of the cell correlate well with the electrolyte conductivity data. Using 4 M NaCl electrolyte which possesses the highest conductivity, the Al-air cell registers an open circuit potential (OCV) of 1.1 V and demonstrates discharge capacity of 250 mAh, rated at 1 mA. Upon employing seawater, the OCV reduced to 0.68 V and discharge capacity decreased to 150 mAh. However, utilizing an exposed cell configuration which mitigates the hydroxide gel water binding effect, the Al-air seawater cell performance is greatly enhanced until almost compatible to Al-air cell employing 4 M NaCl.

Item Type:	Article (Journal)
Additional Information:	2593/29621
Uncontrolled Keywords:	Aluminium-air cell, NaCl electrolyte, seawater, exposed cell design
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Mohd Hanafi Ani
Date Deposited:	19 Apr 2013 16:06
Last Modified:	19 Apr 2013 16:06
URI:	http://irep.iium.edu.my/id/eprint/29621

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