Cobalt phosphate-based supercapattery as alternative power source for implantable medical devices

Show simple item record Shao, Han Padmanathan, Narayanasamy McNulty, David O'Dwyer, Colm Razeeb, Kafil M. 2019-01-08T12:00:25Z 2019-01-08T12:00:25Z 2018-12-26
dc.identifier.citation Shao, H., Padmanathan, N., McNulty, D., O’Dwyer, C. and Razeeb, K. M. (2019) 'Cobalt Phosphate-Based Supercapattery as Alternative Power Source for Implantable Medical Devices', ACS Applied Energy Materials, 2(1), pp. 569-578. doi: 10.1021/acsaem.8b01612 en
dc.identifier.volume 2
dc.identifier.startpage 569 en
dc.identifier.endpage 578 en
dc.identifier.issn 2574-0962
dc.identifier.doi 10.1021/acsaem.8b01612
dc.description.abstract The supercapattery is an ideal energy storage device that combines excellent power density and rate capability of supercapacitors and the greater energy density of batteries. With superior storage capacity and long life, this device can be employed in next-generation artificial cardiac pacemakers as a rechargeable energy source for the lifetime of the pacemaker (at least 15-20 years). However, current hybrid energy storage devices are often limited by less than ideal performance of either the supercapacitor or battery. Here, we develop a low cost and scalable prototype supercapattery with cobalt phosphate as positive and activated carbon as negative electrodes. This positive electrode exhibits a maximum specific capacity of 215.6 mAh g-1 (≈1990 F g-1), ever reported in a metal phosphate based electrode. The supercapattery delivers a high energy density of 3.53 mWh cm-3 (43.2 Wh kg-1) and a power density of 425 mW cm-3 (5.8 kW kg-1). Furthermore, the device can retain 79% voltage even after 4 minutes self-discharge, enough to provide power during cardiac emergencies. This hybrid device provide excellent performance and stability under physiological temperature range (35-41 °C), retaining 68% of specific capacity after 100,000 cycles at room temperature (25 °C) and up to 81.5% after 20,000 cycles at 38 °C, demonstrating its effectiveness as a potential power source for the next-generation implanted medical devices. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society, ACS en
dc.rights © 2018 American Chemical Society. This article is made available for a limited time sponsored by ACS under the ACS Free to Read License, which permits copying and redistribution of the article for non-commercial scholarly purposes. en
dc.rights.uri en
dc.subject Cobalt phosphate en
dc.subject Nanomaterial en
dc.subject Supercapattery en
dc.subject Supercapacitor en
dc.subject Electrochemical en
dc.subject Energy storage device en
dc.title Cobalt phosphate-based supercapattery as alternative power source for implantable medical devices en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2019-01-05T18:15:38Z
dc.description.version Accepted Version en
dc.internal.rssid 468258753
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle ACS Applied Energy Materials en
dc.internal.copyrightchecked Yes. ACS free to read license. en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::NMP/604360/EU/MANpower - Energy Harvesting and Storage for Low Frequency Vibrations/MANPOWER en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/14/TIDA/2455/IE/SweatSens: Biofouling Mitigated Sweat pH and Glucose Sensing/ en

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