In Situ Thermal Battery Discharge Using CoS2 as a Cathode Material
| العنوان: | In Situ Thermal Battery Discharge Using CoS2 as a Cathode Material |
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| المؤلفون: | John T. S. Irvine, Richard K. B. Gover, Julia D. Percival, George M. Carins, Kyriakos Giagloglou, Christina J. Crouch, Julia L. Payne, Ronald I. Smith |
| المساهمون: | EPSRC, The Royal Society, University of St Andrews. School of Chemistry, University of St Andrews. Centre for Designer Quantum Materials, University of St Andrews. EaSTCHEM |
| المصدر: | Journal of The Electrochemical Society. 166:A2660-A2664 |
| بيانات النشر: | The Electrochemical Society, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | In situ, Energy storage, Materials science, Renewable Energy, Sustainability and the Environment, DAS, QD Chemistry, Condensed Matter Physics, High temperature batteries, Neutron diffraction, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Batteries, Cathode material, Materials Chemistry, Electrochemistry, QD, SDG 7 - Affordable and Clean Energy, Composite material, Thermal Battery |
| الوصف: | Authors thank AWE and the EPSRC (EP/K015540/1) for funding. JTSI acknowledges a Royal Society Wolfson Research Merit award. We thank the STFC for beam-time. Thermal batteries are an established primary battery technology and the most commonly used cathodes in these batteries are transition metal disulfides MS2 (where M = Co, Ni and Fe). However, understanding the evolution of crystalline phases upon battery discharge has been hindered due to the high temperature operation of these batteries. Here we report an experiment that simultaneously collects powder neutron diffraction and electrochemical data as the battery is discharged. Four regions are observed in the diffraction data and four different cobalt containing phases are observed. Multi-phase Rietveld refinement has been used to monitor the evolution of phases during discharge and this is linked to the battery discharge profile. A new discharge mechanism has been proposed which involves hexagonal CoS instead of Co3S4, and the increase in unit cell parameters on discharge suggests the formation of a sulfur deficient solid solution before transformation to Co9S8. This behavior seems reminiscent of that of NiS2 suggesting that the discharge mechanisms of transition metal disulfides may have more similarities than originally thought. Publisher PDF |
| وصف الملف: | application/pdf |
| تدمد: | 1945-7111 0013-4651 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0c8cc0b796c57de0ab89c113bd1f319 https://doi.org/10.1149/2.1431912jes |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f0c8cc0b796c57de0ab89c113bd1f319 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19457111 00134651 |
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