Discharge mechanism of the heat treated electrolytic manganese dioxide cathode in a primary Li/MnO₂ battery: an in-situ and ex-situ synchrotron X-ray diffraction study

Dose, Wesley M.; Sharma, Neeraj; Donne, Scott W.

Title: Discharge mechanism of the heat treated electrolytic manganese dioxide cathode in a primary Li/MnO₂ battery: an in-situ and ex-situ synchrotron X-ray diffraction study
Creator: Dose, Wesley M.; Sharma, Neeraj; Donne, Scott W.
Relation: Journal of Power Sources Vol. 258, p. 155-163
Publisher Link: http://dx.doi.org/10.1016/j.jpowsour.2014.01.102
Publisher: Elsevier BV
Resource Type: journal article
Date: 2014
Description: In this work the discharge mechanism for heat treated electrolytic manganese dioxide (HT-EMD) in a primary lithium battery is investigated. In-situ and ex-situ synchrotron X-ray diffraction is utilized to study the structural evolution with respect to material utilization (Li_xMnO₂). At a 4.3 mA g⁻¹ discharge rate, HT-EMD undergoes a simultaneous two-phase transformation and solid solution reaction for 0 0.34) formed in the two phase process. At higher discharge rates (17.1 mA g⁻¹), no evidence for the new lithiated phase is observed, suggesting the discharge mechanism is rate dependent. These findings represent a key step in understanding the mechanistic behaviour of HT-EMD in primary battery systems, which in turn will assist in optimizing battery performance characteristics and broadening possible electronic applications.
Subject: lithium battery; in-situ synchrotron X-ray diffraction; manganese dioxide; heat treatment
Identifier: http://hdl.handle.net/1959.13/1303646
Identifier: uon:20698
Identifier: ISSN:0378-7753
Language: eng
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