https://scholars.lib.ntu.edu.tw/handle/123456789/407331
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lu C.-H. | en_US |
dc.contributor.author | Li W.Y. | en_US |
dc.contributor.author | Subburaj T. | en_US |
dc.contributor.author | Ou C.Y. | en_US |
dc.contributor.author | Kumar P.S. | en_US |
dc.creator | Kumar P.S.;Ou C.Y.;Subburaj T.;Li W.Y.;Lu C.-H. | - |
dc.date.accessioned | 2019-05-13T04:33:11Z | - |
dc.date.available | 2019-05-13T04:33:11Z | - |
dc.date.issued | 2019 | - |
dc.identifier.issn | 02728842 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/407331 | - |
dc.description.abstract | Olivine structured LiFePO 4 cathode materials were successfully synthesized via a newly developed eco-friendly sol-gel process. In this study, bio-derived natural agar powders were used as chelating agents as well as carbon sources for the first time. The impacts of different agar concentrations (3 wt%¡V12 wt%) and calcination temperatures (400 ¢XC¡V700 ¢XC) on the structural and electrochemical properties of LiFePO 4 /C powder were investigated in detail. XRD analysis showed that as the concentration of agar reached 6 wt%, a LiFePO 4 phase was obtained in N 2 atmosphere with 700 ¢XC heating for 8 h. Moreover, increasing the agar concentration to 12 wt% significantly lowered the calcination temperature to 500 ¢XC for the formation of LiFePO 4 phase. Particle size distribution spectra also revealed that addition of up to 12 wt% agar concentration reduced the particle sizes of the as-prepared LiFePO 4 powder. LiFePO 4 powder synthesized with 12 wt% agar concentration at 600 ¢XC exhibited an initial specific discharge capacity of 147 mA h/g at C/10 rate and maintained 146 mA h/g at the end of 50 th cycle in 2¡V4.2 V window, indicating excellent capacity retention. The analysis of electrochemical impedance spectra and CV test indicated that the charge transfer resistance and potential difference were effectively reduced. ? 2019 Elsevier Ltd and Techna Group S.r.l. | - |
dc.language | en | - |
dc.relation.ispartof | Ceramics International | en_US |
dc.subject | Agar | - |
dc.subject | Cathode material | - |
dc.subject | LiFePO 4 | - |
dc.subject | Lithium-ion battery | - |
dc.subject | Sol-gel | - |
dc.subject.classification | [SDGs]SDG7 | - |
dc.subject.other | Algae; Calcination; Cathodes; Charge transfer; Chelation; Electric discharges; Iron compounds; Lithium compounds; Particle size; Particle size analysis; Polysaccharides; Powders; Silicate minerals; Sol-gel process; Agar; Calcination temperature; Cath-ode materials; Charge transfer resistance; Electrochemical impedance spectra; Electrochemical performance; LiFePO4; Specific discharge capacity; Lithium-ion batteries | - |
dc.title | Influence of bio-derived agar addition on the electrochemical performance of LiFePO 4 cathode powders for Li-ion batteries | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.ceramint.2019.03.128 | - |
dc.identifier.scopus | 2-s2.0-85063480861 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063480861&doi=10.1016%2fj.ceramint.2019.03.128&partnerID=40&md5=6f6aaf5b6f29999c0987523bfbdedda4 | - |
dc.relation.pages | 12218-12224 | - |
dc.relation.journalvolume | 45 | - |
dc.relation.journalissue | 9 | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0003-0522-7020 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。