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Ionic Liquid Functionalized Gel Polymer Electrolytes for Stable Lithium Metal Batteries
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhou, Tianhong | - |
dc.contributor.author | Zhao, Yan | - |
dc.contributor.author | Choi, Jang Wook | - |
dc.contributor.author | Coskun, Ali | - |
dc.date.accessioned | 2022-04-21T00:32:47Z | - |
dc.date.available | 2022-04-21T00:32:47Z | - |
dc.date.created | 2021-11-29 | - |
dc.date.created | 2021-11-29 | - |
dc.date.created | 2021-11-29 | - |
dc.date.created | 2021-11-29 | - |
dc.date.issued | 2021-10-11 | - |
dc.identifier.citation | Angewandte Chemie - International Edition, Vol.60 No.42, pp.22791-22796 | - |
dc.identifier.issn | 1433-7851 | - |
dc.identifier.other | 148774 | - |
dc.identifier.uri | https://hdl.handle.net/10371/179150 | - |
dc.description.abstract | Metallic lithium (Li) is regarded as the ideal anode material in lithium-ion batteries due to its low electrochemical potential, highest theoretical energy density and low density. There are, however, still significant challenges to be addressed such as Li-dendrite growth and low interfacial stability, which impede the practical application of Li metal anodes. In order to circumvent these shortcomings, herein, we present a gel polymer electrolyte containing imidazolium ionic liquid end groups with a perfluorinated alkyl chain (F-IL) to achieve both high ionic conductivity and Li ion transference number by fundamentally altering the solubility of salt within the gel electrolyte through Lewis-acidic segments in the polymer backbone. Moreover, the presence of F-IL moieties decreased the binding affinity of Li cation towards the glycol chains, enabling a rapid transfer of Li cation within the gel network. These structural features enabled the immobilization of anions on the ionic liquid segments to alleviate the space-charge effect while promoting stronger anion coordination and weaker cation coordination in the Lewis-acidic polymers. Accordingly, we realized a high Li ion conductivity (9.16x10(-3) S cm(-1)) and high Li ion transference number of 0.69 simultaneously, along with a good electrochemical stability up to 4.55 V, while effectively suppressing Li dendrite growth. Moreover, the gel polymer electrolyte exhibited stable cycling performance of the Li|Li symmetric cell of 9 mAh cm(-2) for more than 1800 hours and retained 86.7 % of the original capacity after 250 cycles for lithium-sulfur (Li-S) full cell. | - |
dc.language | 영어 | - |
dc.publisher | John Wiley & Sons Ltd. | - |
dc.title | Ionic Liquid Functionalized Gel Polymer Electrolytes for Stable Lithium Metal Batteries | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 최장욱 | - |
dc.identifier.doi | 10.1002/anie.202106237 | - |
dc.citation.journaltitle | Angewandte Chemie - International Edition | - |
dc.identifier.wosid | 000693205400001 | - |
dc.identifier.scopusid | 2-s2.0-85114291268 | - |
dc.citation.endpage | 22796 | - |
dc.citation.number | 42 | - |
dc.citation.startpage | 22791 | - |
dc.citation.volume | 60 | - |
dc.identifier.sci | 000693205400001 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Choi, Jang Wook | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | HOST | - |
dc.subject.keywordAuthor | gel polymer electrolyte | - |
dc.subject.keywordAuthor | ionic conductivity | - |
dc.subject.keywordAuthor | ionic liquid | - |
dc.subject.keywordAuthor | Li ion transference number | - |
dc.subject.keywordAuthor | Li metal anode | - |
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