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[[Vol. 13]Oxide nanosheets trump current state-of-the art capacitor materials_ WPI-MANA.pdf](https://mdr.nims.go.jp/filesets/595bd1ce-100e-4dae-a018-2445904b9c0c/download)

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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.13] Oxide nanosheets trump current state-of-the art capacitor materials](https://mdr.nims.go.jp/datasets/56bc1795-d89b-42d2-9df2-081930755df2)

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2022/04/04 10:23 Oxide nanosheets trump current state-of-the art capacitor materials| MANAhttps://www.nims.go.jp/mana/research/highlights/vol13.html 1/2Previous  Index  NextResearch Highlights[Vol. 13]Oxide nanosheets trump current state-of-the art capacitor materials19 Mar, 2014Researchers developed ultrathin high-performance capacitors using LEGO-like game of oxide nanosheets.Figure : Schematic illustration (left) and cross-sectional high-resolution TEM image (right) of the all-nanosheet ultrathincapacitor.Electronics are getting smaller all the time, but there's a limit to how tiny they can get with today'smaterials. Takayoshi Sasaki and co-workers at the International Center for MaterialsNanoarchitectonics, National Institute for Materials Science and Shinshu University in Japan havenow developed a way to shrink capacitors, key components that store energy, even further, whichcould accelerate the development of more compact, high-performance next-generation devices.Many recent improvements have already downsized capacitors significantly. But current technologyhas almost reached its limit in terms of materials and processing, which in turn limits theperformance that manufacturers can achieve. In response, the researchers have gone to thenanoscale, but "nanocapacitors" are not easy to make.Sasaki’s team developed a LEGO-like approach, and they applied it to make high-performanceultrathin capacitors. They used conductive Ru0.95O20.2- and dielectric Ca2Nb3O10- nanosheets ascore device components. By using solution-based assembly, they created a sandwich consisting oflayers of two different types of oxide nanosheets to produce an ultrathin capacitor. The newcapacitor has a stable capacitance density (~27.5μF cm-2), which is 2,000 times higher than thatof currently available commercial products.https://www.nims.go.jp/mana/research/highlights/vol12.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol14.html2022/04/04 10:23 Oxide nanosheets trump current state-of-the art capacitor materials| MANAhttps://www.nims.go.jp/mana/research/highlights/vol13.html 2/2They see a number of possible extensions to the current work and conclude, “The virtually infinitevarieties of oxide nanosheets, which can be used to assemble various nanosheet architectures,suggest that 2D heterointerfaces will offer an unprecedented versatility for the realization of new2D states and molecularly thin film devices even beyond graphene.”Reference"All-nanosheet ultrathin capacitors assembled layer-by-layer via solution-based processes"Chengxiang Wang, Minoru Osada, Yasuo Ebina, Bao-Wen Li, Kosho Akatsuka, Katsutoshi Fukuda,Wataru Sugimoto, Renzhi Ma, and Takayoshi SasakiJournal : ACS NANO 140219070102009, (2014).DOI : 10.1021/nn406367pAffiliationsInternational Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for MaterialsScience (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, JapanContact informationInternational Center for Materials Nanoarchitectonics(WPI-MANA)National Institute for Materials Science1-1 Namiki, Tsukuba, Ibaraki 305-0044 JapanPhone: +81-29-860-4710E-mail: mana-pr[AT]ml.nims.go.jphttps://samurai.nims.go.jp/profiles/osada_minoru?locale=enhttps://samurai.nims.go.jp/profiles/ebina_yasuo?locale=enhttps://samurai.nims.go.jp/profiles/ma_renzhi?locale=enhttps://samurai.nims.go.jp/profiles/sasaki_takayoshi?locale=enhttps://pubs.acs.org/doi/10.1021/nn406367p