Zobrazeno 1 - 10
of 491
pro vyhledávání: '"Rika Hagiwara"'
Autor:
Rika HAGIWARA
Publikováno v:
Electrochemistry, Vol 92, Iss 10, Pp 101001-101001 (2024)
The author and co-workers developed 1-ethyl-3-methylimidazolium fluorohydrogenate (fluorohydrogenate anion: (FH)nF−), which had the ionic conductivity of 100 mS cm−1, the highest among those of ionic liquids reported to date, and clarified its ph
Externí odkaz:
https://doaj.org/article/27887f37a18c43e8b94c92553daa0587
Autor:
Titus Masese, Yoshinobu Miyazaki, Josef Rizell, Godwill Mbiti Kanyolo, Chih-Yao Chen, Hiroki Ubukata, Keigo Kubota, Kartik Sau, Tamio Ikeshoji, Zhen-Dong Huang, Kazuki Yoshii, Teruo Takahashi, Miyu Ito, Hiroshi Senoh, Jinkwang Hwang, Abbas Alshehabi, Kazuhiko Matsumoto, Toshiyuki Matsunaga, Kotaro Fujii, Masatomo Yashima, Masahiro Shikano, Cédric Tassel, Hiroshi Kageyama, Yoshiharu Uchimoto, Rika Hagiwara, Tomohiro Saito
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-16 (2021)
Honeycomb layered oxides are an emerging class of materials with peculiar physicochemical properties. Here, the authors report the synthesis and electrochemical energy storage characterisations of a mixed-alkali honeycomb layered oxide material capab
Externí odkaz:
https://doaj.org/article/de3e34a9a35e490198de7f15ac23b35c
Publikováno v:
Electrochemistry, Vol 91, Iss 4, Pp 047003-047003 (2023)
Sodium-sulfur (Na-S) batteries are promising energy storage systems for renewable energy sources which redeem an intermittent energy source. This study reports the effects of the Na[SO3CF3] fraction in an inorganic Na[SO3CF3]-Cs[N(SO2CF3)2] ionic liq
Externí odkaz:
https://doaj.org/article/b03e43e7243d421dbf8892247bb65a6d
Publikováno v:
Electrochemistry, Vol 88, Iss 5, Pp 437-440 (2020)
Graphene-like graphite prepared by heating graphite oxide under vacuum at 800 °C was fluorinated by elemental fluorine in the presence of HF at room temperature. The interlayer spacing of the resulting material was 0.639 nm and it showed CxF type ch
Externí odkaz:
https://doaj.org/article/10b014cd20894b2284c89fcf9f184257
Publikováno v:
Electrochemistry, Vol 91, Iss 1, Pp 017003-017003 (2023)
Hard carbon (HC) is receiving widespread attention as a negative electrode material for sodium secondary batteries. In this study, spherical HC with three different diameters (1 µm, 1.5 µm, and 5 µm) are investigated using ionic liquid (IL) and or
Externí odkaz:
https://doaj.org/article/5d2afaf7104e4c5fb3d33be7ddac63f3
Publikováno v:
Electrochemistry, Vol 89, Iss 2, Pp 118-120 (2021)
Electric double layer capacitors are energy storage devices with advantages of fast charge-discharge and long life span. Surface modification of activated carbon electrodes is an effective way to improve their performance. For this purpose, deoxofluo
Externí odkaz:
https://doaj.org/article/d7e16de63a6b4a0ebcb1252d77bf2e95
Publikováno v:
Electrochemistry Communications, Vol 102, Iss , Pp 46-51 (2019)
A vanadium phosphide–phosphorus composite, V4P7/5P, is investigated as a negative electrode for sodium-ion batteries using the ionic liquid, Na[FSA]–[C3C1pyrr][FSA] (FSA = bis(fluorosulfonyl)amide anion and C3C1pyrr = N-methyl-N-propylpyrrolidini
Externí odkaz:
https://doaj.org/article/caa9dca841b74029b21f50a1bf118f3c
Autor:
Atsushi Kitada, Yusuke Funasako, Kazuhiko Matsumoto, Rika Hagiwara, Makoto Inokuchi, Kazuhiro Fukami, Kuniaki Murase
Publikováno v:
IUCrData, Vol 5, Iss 2, p x200162 (2020)
The structure of the title compound, H3O+·C2F6NO4S2−·C12H24O6 or [H3O+·C12H24O6][N(SO2CF3)2−], which is an ionic liquid with a melting point of 341–343 K, has been determined at 113 K. The asymmetric unit consists of two crystallographically
Externí odkaz:
https://doaj.org/article/d2ccf33d74aa442c847cc505ebd06e1b
Autor:
Yoshiaki Matsuo, Junichi Inamoto, Atsushi Mineshige, Miwa Murakami, Kazuhiko Matsumoto, Rika Hagiwara
Publikováno v:
Electrochemistry Communications, Vol 110, Iss , Pp - (2020)
Fluorine-intercalated graphite, CxF with x = 2.8, was tested for the cathode active material of an all-solid-fluoride-ion shuttle battery. The addition of copper fluoride facilitated the discharge reaction of CxF. It was discharged up to 0.4 V vs. Pb
Externí odkaz:
https://doaj.org/article/fa9cbf80dfc54f349cc48a4aa2346278
Publikováno v:
Energies, Vol 8, Iss 6, Pp 6202-6214 (2015)
Composite membranes consisting of N-ethyl-N-methylpyrrolidinium fluoro-hydrogenate (EMPyr(FH)1.7F) ionic liquid and poly(vinylidene fluoride hexafluoro-propylene) (PVdF-HFP) copolymer were successfully prepared in weight ratios of 5:5, 6:4, and 7:3 u
Externí odkaz:
https://doaj.org/article/3d839a647f9344eca71f7205d04d9358