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2D reentrant auxetic structures of graphene/CNT networks for omnidirectionally stretchable supercapacitors
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Byoung Soo | - |
dc.contributor.author | Lee, Kangsuk | - |
dc.contributor.author | Kang, Seulki | - |
dc.contributor.author | Lee, Soyeon | - |
dc.contributor.author | Pyo, Jun Beom | - |
dc.contributor.author | Choi, In Suk | - |
dc.contributor.author | Char, Kookheon | - |
dc.contributor.author | Park, Jong Hyuk | - |
dc.contributor.author | Lee, Sang-Soo | - |
dc.contributor.author | Lee, Jonghwi | - |
dc.contributor.author | Son, Jeong Gon | - |
dc.creator | 차국헌 | - |
dc.date.accessioned | 2019-04-24T08:34:13Z | - |
dc.date.available | 2020-04-05T08:34:13Z | - |
dc.date.created | 2018-07-05 | - |
dc.date.created | 2018-07-05 | - |
dc.date.created | 2018-07-05 | - |
dc.date.issued | 2017-09 | - |
dc.identifier.citation | Nanoscale, Vol.9 No.35, pp.13272-13280 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | https://hdl.handle.net/10371/148222 | - |
dc.description.abstract | Stretchable energy storage systems are essential for the realization of implantable and epidermal electronics. However, high-performance stretchable supercapacitors have received less attention because currently available processing techniques and material structures are too limited to overcome the trade-off relationship among electrical conductivity, ion-accessible surface area, and stretchability of electrodes. Herein, we introduce novel 2D reentrant cellular structures of porous graphene/CNT networks for omni-directionally stretchable supercapacitor electrodes. Reentrant structures, with inwardly protruded frameworks in porous networks, were fabricated by the radial compression of vertically aligned honeycomb-like rGO/CNT networks, which were prepared by a directional crystallization method. Unlike typical porous graphene structures, the reentrant structure provided structure-assisted stretchability, such as accordion and origami structures, to otherwise unstretchable materials. The 2D reentrant structures of graphene/CNT networks maintained excellent electrical conductivities under biaxial stretching conditions and showed a slightly negative or near-zero Poisson's ratio over a wide strain range because of their structural uniqueness. For practical applications, we fabricated all-solid-state supercapacitors based on 2D auxetic structures. A radial compression process up to 1/10th densified the electrode, significantly increasing the areal and volumetric capacitances of the electrodes. Additionally, vertically aligned graphene/CNT networks provided a plentiful surface area and induced sufficient ion transport pathways for the electrodes. Therefore, they exhibited high gravimetric and areal capacitance values of 152.4 F g(-1) and 2.9 F cm(-2), respectively, and had an excellent retention ratio of 88% under a biaxial strain of 100%. Auxetic cellular and vertically aligned structures provide a new strategy for the preparation of robust platforms for stretchable energy storage electrodes. | - |
dc.language | 영어 | - |
dc.language.iso | en | en |
dc.publisher | Royal Society of Chemistry | - |
dc.title | 2D reentrant auxetic structures of graphene/CNT networks for omnidirectionally stretchable supercapacitors | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c7nr02869e | - |
dc.citation.journaltitle | Nanoscale | - |
dc.identifier.wosid | 000410659800054 | - |
dc.identifier.scopusid | 2-s2.0-85029472449 | - |
dc.description.srnd | OAIID:RECH_ACHV_DSTSH_NO:T201723064 | - |
dc.description.srnd | RECH_ACHV_FG:RR00200001 | - |
dc.description.srnd | ADJUST_YN: | - |
dc.description.srnd | EMP_ID:A004677 | - |
dc.description.srnd | CITE_RATE:7.233 | - |
dc.description.srnd | FILENAME:2D reentrant auxetic structures of grapheneCNT networks for omnidirectionally stretchable supercapacitors.pdf | - |
dc.description.srnd | DEPT_NM:화학생물공학부 | - |
dc.description.srnd | EMAIL:khchar@snu.ac.kr | - |
dc.description.srnd | SCOPUS_YN:Y | - |
dc.description.srnd | FILEURL:https://srnd.snu.ac.kr/eXrepEIR/fws/file/3b0694e9-eb46-4ba4-bfc0-64655db1bec7/link | - |
dc.citation.endpage | 13280 | - |
dc.citation.number | 35 | - |
dc.citation.startpage | 13272 | - |
dc.citation.volume | 9 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Choi, In Suk | - |
dc.contributor.affiliatedAuthor | Char, Kookheon | - |
dc.identifier.srnd | T201723064 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | SOLID-STATE SUPERCAPACITORS | - |
dc.subject.keywordPlus | CAPACITIVE ENERGY-STORAGE | - |
dc.subject.keywordPlus | WALLED CARBON NANOTUBES | - |
dc.subject.keywordPlus | AG NANOWIRE NETWORKS | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | ELECTROCHEMICAL CAPACITORS | - |
dc.subject.keywordPlus | COMPACT SUPERCAPACITORS | - |
dc.subject.keywordPlus | POISSONS RATIO | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | FILMS | - |
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