https://scholars.lib.ntu.edu.tw/handle/123456789/409032
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lim C.-H. | en_US |
dc.contributor.author | Huang T.-Y. | en_US |
dc.contributor.author | Shao P.-S. | en_US |
dc.contributor.author | Chien J.-H. | en_US |
dc.contributor.author | Weng Y.-T. | en_US |
dc.contributor.author | Huang H.-F. | en_US |
dc.contributor.author | Hwang B.J. | en_US |
dc.contributor.author | Wu N.-L. | en_US |
dc.creator | Hwang B.J.;Huang H.-F.;Weng Y.-T.;Chien J.-H.;Shao P.-S.;Huang T.-Y.;Lim C.-H.;Wu N.-L. | - |
dc.date.accessioned | 2019-05-17T04:56:38Z | - |
dc.date.available | 2019-05-17T04:56:38Z | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 00134686 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/409032 | - |
dc.description.abstract | Amorphous Si (a-Si) powders have been synthesized using various synthetic methods, and their electrochemical sodiation behaviours have been studied in detail. These methods include (1) a chemical delithiation method where Si is first lithiated and then delithiated either in an aqueous or organic solution, (2) a mechanical method where crystalline Si is subjected to high-energy ball milling, and (3) a mechanical fusion method where a Si-Sn composite with a Si-Sn atomic ratio of 0.94:0.06 is synthesized through high-energy ball milling. Commercial silicon monoxide (SiO) has also been examined for comparison. It is shown that facile oxidation of a-Si encountered in the methods (1) and (2) has led to low sodiation capacity and huge first-cycle irreversible capacity, similar to those of SiO. By contrast, the mechanically fused Si-Sn composite, which contains a Sn shell that prevents the oxidation of the partially amorphized Si core, exhibits a maximum sodiation capacity of 161 mAh g-1 based on active material. This is translated to an estimated sodiation capacity of no more than 230 mAh g-1 for the a-Si component in the composite. The presence of the Sn shell considerably reduces the first-cycle irreversible capacity and charge-transfer resistance, resulting in improved rate and cycle performance. This suggests a new material design strategy that may enable the use of the a-Si for Na-ion battery anode applications. ? 2016 Elsevier Ltd. | - |
dc.language | English | - |
dc.relation.ispartof | Electrochimica Acta | en_US |
dc.subject | amorphous Si | - |
dc.subject | anode | - |
dc.subject | sodium ion battery | - |
dc.title | Experimental Study on Sodiation of Amorphous Silicon for Use as Sodium-Ion Battery Anode | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.electacta.2016.06.031 | - |
dc.identifier.scopus | 2-s2.0-84975887133 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975887133&doi=10.1016%2fj.electacta.2016.06.031&partnerID=40&md5=15db6e6f5dd9dec35faa4ffce6c4320f | - |
dc.relation.pages | 265-272 | - |
dc.relation.journalvolume | 211 | - |
item.openairetype | journal article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0001-6545-8790 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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