DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Donghyuk | ko |
dc.contributor.author | Hyun, Seungmin | ko |
dc.contributor.author | Han, Seung Min | ko |
dc.date.accessioned | 2018-07-24T02:59:01Z | - |
dc.date.available | 2018-07-24T02:59:01Z | - |
dc.date.created | 2018-07-16 | - |
dc.date.created | 2018-07-16 | - |
dc.date.issued | 2018-06 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.24, pp.11353 - 11361 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/244561 | - |
dc.description.abstract | Self-healing features that mimic the biological mechanisms for self-repair have recently been applied to high-capacity but extreme volume expansion electrode materials such as silicon anodes to overcome the short cycle-life caused by electrical contact loss and active material pulverization. In this study, we adopt a freestanding composite design for effective relaxation of lithiation induced stresses and enhancement of electrochemical reliability. Silicon microparticles are homogenously dispersed and embedded within a self-healing polymer matrix that enables free volume expansion and contraction during lithiation and delithiation. The freestanding electrode, which does not require a separate current collector, demonstrated 91.8% capacity retention after 100 cycles at C/10 rate with an average specific capacity and gravimetric capacity, including current collector mass, of approximate to 2100 mA h g(-1) and approximate to 1050 mA h g(-1) respectively, which is a significant improvement compared to the conventional design of simple self-healing polymer coatings on silicon particle embedded current collectors. The fabricated freestanding silicon microparticle and self-healing polymer composite electrode demonstrated stable electrochemical performance after being completely cut, reattached, and cycled and retained at most 95% of its initial capacity. Overall, the proposed freestanding silicon microparticle and self-healing polymer composite design demonstrated excellent gravimetric capacity, cycle life, and self-healing capability without employing expensive and complex nanostructures. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LITHIUM-ION BATTERIES | - |
dc.subject | LONG CYCLE LIFE | - |
dc.subject | NEGATIVE ELECTRODES | - |
dc.subject | CONDUCTIVE POLYMER | - |
dc.subject | ALLOY ANODES | - |
dc.subject | HIGH-ENERGY | - |
dc.subject | BINDER | - |
dc.subject | PERFORMANCE | - |
dc.subject | NANOPARTICLES | - |
dc.subject | PARTICLES | - |
dc.title | Freestanding silicon microparticle and self-healing polymer composite design for effective lithiation stress relaxation | - |
dc.type | Article | - |
dc.identifier.wosid | 000435829000032 | - |
dc.identifier.scopusid | 2-s2.0-85048817400 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 24 | - |
dc.citation.beginningpage | 11353 | - |
dc.citation.endingpage | 11361 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c7ta11269f | - |
dc.contributor.localauthor | Han, Seung Min | - |
dc.contributor.nonIdAuthor | Kim, Donghyuk | - |
dc.contributor.nonIdAuthor | Hyun, Seungmin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | LONG CYCLE LIFE | - |
dc.subject.keywordPlus | NEGATIVE ELECTRODES | - |
dc.subject.keywordPlus | CONDUCTIVE POLYMER | - |
dc.subject.keywordPlus | ALLOY ANODES | - |
dc.subject.keywordPlus | HIGH-ENERGY | - |
dc.subject.keywordPlus | BINDER | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | PARTICLES | - |
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