Olivine-type cathode for rechargeable batteries: role of chelating agents

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dc.contributor.authorKandhasamy, Sen_AU
dc.contributor.authorSingh, Pen_AU
dc.contributor.authorThurgate, Sen_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorAppadoo, Den_AU
dc.contributor.authorMinakshi, Men_AU
dc.date.accessioned2025-02-13T21:14:18Zen_AU
dc.date.available2025-02-13T21:14:18Zen_AU
dc.date.issued2012-11-01en_AU
dc.date.statistics2025-01-15en_AU
dc.description.abstractOlivine (LiCo 1/3Mn 1/3Ni 1/3PO 4) powders were synthesized at 550-600°C for 6 h in air by a sol-gel method using multiple chelating agents and used as a cathode material for rechargeable batteries. Range of chelating agents like a weak organic acid (citric acid - CA), emulsifier (triethanolamine - TEA) and non-ionic surfactant (polyvinylpyrrolidone - PVP) in sol-gel wet chemical synthesis were used. The dependence of the physicochemical properties of the olivine powders such as particle size, morphology, structural bonding and crystallinity on the chelating agent was extensively investigated. Among the chelating agents used, unique cycling behavior (75 mAh/g after 25 cycles) is observed for the PVP assisted olivine. This is due to volumetric change in trapped organic layer for first few cycles. The trapped organic species in the electrode-electrolyte interface enhances the rate of lithium ion diffusion with better capacity retention. In contrast, CA and TEA showed a gradual capacity fade of 30 and 38 mAh/g respectively after multiple cycles. The combination of all the three mixed chelating agents showed an excellent electrochemical behavior of 100 mAh/g after multiple cycles and the synergistic effect of these agents are discussed. © 2012 Elsevier Ltd.en_AU
dc.description.sponsorshipThe author (M.M.) wishes to acknowledge the Australian Research Council (ARC). This research was supported under Australian Research Council (ARC) Discovery Project funding scheme (DP1092543). The views expressed herein are those of the author (M.M.) and are not necessarily those of the ARC. M.M. would also like to thank the Australian Institute of Nuclear Science and Engineering (AINSE) for providing financial assistance (Award 11133) for access to Ion beam analysis at ANSTO. The Infrared analysis was undertaken in the FRIR beamline at the Australian Synchrotron, Victoria, Australia through the grant no. AS113/HRIR 4065.en_AU
dc.identifier.citationKandhasamy, S., Singh, P., Thurgate, S., Ionescu, M., Appadoo, D., & Minakshi, M. (2012). Olivine-type cathode for rechargeable batteries: role of chelating agents. Paper presented to the 62nd Annual Meeting of the International Society of Electrochemistry, Electrochemical Frontiers in Global Environment and Energy 11-16 September, 2011, Niigata, Japan. In Electrochimica Acta, 82, 302-308. doi:10.1016/j.electacta.2012.05.129en_AU
dc.identifier.conferenceenddate2011-09-16en_AU
dc.identifier.conferencename62nd Annual Meeting of the International Society of Electrochemistry, Electrochemical Frontiers in Global Environment and Energyen_AU
dc.identifier.conferenceplaceNiigata, Japanen_AU
dc.identifier.conferencestartdate2011-09-11en_AU
dc.identifier.issn0013-4686en_AU
dc.identifier.journaltitleElectrochimica Actaen_AU
dc.identifier.pagination302-308en_AU
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2012.05.129en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15984en_AU
dc.identifier.volume82en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectOlivineen_AU
dc.subjectSol-gel processen_AU
dc.subjectSynthesisen_AU
dc.subjectElectric conductivityen_AU
dc.subjectCathodesen_AU
dc.subjectMaterialsen_AU
dc.subjectCoatingsen_AU
dc.subjectLithium ion batteriesen_AU
dc.subjectCitric aciden_AU
dc.subjectCarboxylic acidsen_AU
dc.subjectBondingen_AU
dc.titleOlivine-type cathode for rechargeable batteries: role of chelating agentsen_AU
dc.typeConference Paperen_AU
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