著者
金築 優
出版者
[出版者不明]
巻号頁・発行日
2010-01

制度:新 ; 報告番号:甲2970号 ; 学位の種類:博士(人間科学) ; 授与年月日:2010/1/20 ; 早大学位記番号:新5221
著者
洪 性賛
巻号頁・発行日
2012

Thesis (Ph. D. in Coaching Science)--University of Tsukuba, (A), no. 6272, 2012.3.23
著者
Kubota Tadahiko Ihara Masayuki Katayama Shinichi Nakai Hideki Ichikawa Junji
出版者
Elsevier B.V.
雑誌
Journal of power sources (ISSN:03787753)
巻号頁・発行日
vol.207, pp.141-149, 2012-06
被引用文献数
20

Five 1,1-difluoro-1-alkenes bearing aryl groups are investigated as electrolyteadditives for high-charge-voltage lithiumionbatteries with an aim to induce favorable solid electrolyte interphase (SEI) formation. Among them, 1,1-difluoro-4-phenylbut-1-ene (DF-1) forms appropriate SEIs on the cathode and anode by its reactions under oxidative and reductive conditions, respectively, which was suggested by linear sweep and cyclic voltammetry. The SEIs formed with the DF-1 containing electrolyte on the cathode and anode were analyzed by X-ray photoelectron spectroscopy and time of flight-secondary ion mass spectrometry, indicating the following: (i) the cathode surface has a LiF-rich layer with unsaturated hydrocarbons, and (ii) the anode surface also has a LiF-rich layer, which probably includes fluoromethylene (CHF) compounds. The formation of the SEIs on both electrodes with DF-1 results in low impedance being maintained, and thus, particularly good cycle performance even at high-charge-voltage.
著者
Yanagi Kazuhiro Moriya Rieko Cuong Nguyen Thanh Otani Minoru Okada Susumu
出版者
American Physical Society
雑誌
Physical review letters (ISSN:00319007)
巻号頁・発行日
vol.110, no.8, pp.086801, 2013-02
被引用文献数
18 1

We report clear experimental evidence for the charge manipulation of molecules encapsulated inside single-wall carbon nanotubes (SWCNTs) using electrochemical doping techniques. We encapsulated β-carotene (Car) inside SWCNTs and clarified electrochemical doping characteristics of their Raman spectra. C=C streching modes of encapsulated Car and a G band of SWCNTs showed clearly different doping behaviors as the electrochemical potentials were shifted. Electron extraction from encapsulated Car was clearly achieved. However, electrochemical characteristics of Car inside SWCNTs and doping mechanisms elucidated by calculations based on density-functional theory indicate the difficulty of charge manipulation of molecules inside SWCNTs due to the presence of strong on-site Coulomb repulsion energy at the molecules.
著者
Iwasaki Hiroyuki
出版者
Tukuba English Linguistic Society
雑誌
Tsukuba English Studies (ISSN:09116184)
巻号頁・発行日
vol.29, pp.133-148, 2011-02-03
著者
Osawa Mai
出版者
Tukuba English Linguistic Society
雑誌
Tsukuba English Studies (ISSN:09116184)
巻号頁・発行日
vol.29, pp.113-131, 2011-02-03