Please use this identifier to cite or link to this item: https://doi.org/10.1149/1945-7111/ab9ee9
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dc.titleAnalysis of Heat Generation and Impedance Characteristics of Prussian Blue Analogue Cathode-based 18650-type Sodium-ion Cells
dc.contributor.authorSubasinghe, Lihil Uthpala
dc.contributor.authorSatyanarayana Reddy, Gajella
dc.contributor.authorASHISH RUDOLA
dc.contributor.authorPALANI BALAYA
dc.date.accessioned2020-09-18T03:31:51Z
dc.date.available2020-09-18T03:31:51Z
dc.date.issued2020-07-01
dc.identifier.citationSubasinghe, Lihil Uthpala, Satyanarayana Reddy, Gajella, ASHISH RUDOLA, PALANI BALAYA (2020-07-01). Analysis of Heat Generation and Impedance Characteristics of Prussian Blue Analogue Cathode-based 18650-type Sodium-ion Cells. JOURNAL OF THE ELECTROCHEMICAL SOCIETY 167 (11). ScholarBank@NUS Repository. https://doi.org/10.1149/1945-7111/ab9ee9
dc.identifier.issn0013-4651
dc.identifier.issn1945-7111
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/176361
dc.description.abstract© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. We report here 18650-type sodium-ion battery (NIB) with Prussian Blue Analogue Na2Fe2(CN)6 in both monoclinic and rhombohedral phases as the cathode and hard carbon (HC) as the anode using the glyme-based non-flammable 1 mol dm-3 NaBF4 electrolyte. Rhombohedral-Na2Fe2(CN)6 (RPB) vs HC 18650-type cell delivered an energy density of 43 Wh kg-1, achieving good high rate response up to 4.0 C, stable cycling over 100 cycles with 99.99% average coulombic efficiency and 94.8% average round-trip-energy-efficiency. A comparison of the calorimetric studies performed on 18650-type cells revealed lower heat generation in RPB vs HC compared to monoclinic-Na2Fe2(CN)6.2H2O (MPB) vs HC counterpart. Moreover, the RPB vs HC cell demonstrated lower heat generation than commercial NMC vs graphite 18650-type lithium-ion cells. Internal resistance, which is the major contributor to heat generation, is assessed by analysing the impedance spectra of the cells. Furthermore, variation in subcomponents of internal resistance across different depths of discharge determined by fitting impedance data using an equivalent circuit model and analysis using distribution of relaxation times (DRT) method is presented for 18650-type sodium-ion cells for the first time. The obtained results indicate that these efficient and safe 18650-type NIBs open-up new opportunities for exploring innovative storage systems for stationary applications.
dc.language.isoen
dc.publisherELECTROCHEMICAL SOC INC
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectElectrochemistry
dc.subjectMaterials Science, Coatings & Films
dc.subjectMaterials Science
dc.subjectSOLID-ELECTROLYTE INTERPHASE
dc.subjectIRON HEXACYANOFERRATE
dc.subjectRELAXATION-TIMES
dc.subjectSUPERIOR CATHODE
dc.subjectTHERMAL-BEHAVIOR
dc.subjectLAYERED OXIDES
dc.subjectLITHIUM
dc.subjectPERFORMANCE
dc.subjectBATTERY
dc.subjectSPECTROSCOPY
dc.typeArticle
dc.date.updated2020-09-17T22:11:32Z
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.contributor.departmentDEPT OF MECHANICAL ENGINEERING
dc.description.doi10.1149/1945-7111/ab9ee9
dc.description.sourcetitleJOURNAL OF THE ELECTROCHEMICAL SOCIETY
dc.description.volume167
dc.description.issue11
dc.published.statePublished
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