Characterization of MnO sub(2 positive electrode for Fuel Cell/Battery (FCB))

The use of manganese dioxide (MnO sub(2) as a positive electrode material in Fuel Cell/Battery (FCB) systems is described. A positive electrode containing MnO) sub(2) was fabricated and its performance was evaluated for charge/discharge behavior in three different systems: (i) secondary battery posi...

Full description

Saved in:
Bibliographic Details
Published in:Journal of power sources 2008-06, Vol.181 (1), p.177-181
Main Authors: Lee, Sunmook, Choi, Bokkyu, Hamasuna, Nobuyuki, Fushimi, Chihiro, Tsutsumi, Atsushi
Format: Article
Language:English
Subjects:
Battery
Charge
Discharge
Electric batteries
Electrode materials
Electrodes
Fuel cells
Storage batteries
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The use of manganese dioxide (MnO sub(2) as a positive electrode material in Fuel Cell/Battery (FCB) systems is described. A positive electrode containing MnO) sub(2) was fabricated and its performance was evaluated for charge/discharge behavior in three different systems: (i) secondary battery positive electrode, (ii) positive electrode in an alkaline fuel cell, and (iii) positive electrode performance in an FCB system by performing half cell tests. MnO sub(2 was observed to possess redox capabilities as the positive electrode of a secondary battery when it was subject to charge/discharge cycles. It was found that Mn) sub(3)O sub(4, which inhibits the discharge reaction, was produced during charge/discharge cycles. The I-V characteristics of MnO) sub(2) material were measured to check the feasibility of the fuel cell system by supplying H sub(2 into the negative electrode and O) sub(2) into the MnO sub(2 positive electrode, respectively. The MnO) sub(2) electrode showed similar performance to Ni electrode, which was fabricated by using a similar method to the MnO sub(2 electrode. The MnO) sub(2) electrode also showed that it functioned as an FCB positive electrode, which was confirmed by continued production of current when the O sub(2 supply was terminated. These results suggest that MnO) sub(2) is a good candidate for an FCB positive electrode material.
ISSN:0378-7753
DOI:10.1016/j.jpowsour.2008.02.083