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Back Cover: Superior electric storage in de‐alloyed and anodic oxidized Ti–Ni–Si glassy alloy ribbons (Phys. Status Solidi RRL 7/2013)
Author(s) -
Fukuhara M.,
Yoshida H.,
Sato M.,
Sugawara K.,
Takeuchi T.,
Seki I.,
Sueyoshi T.
Publication year - 2013
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201370439
Subject(s) - materials science , supercapacitor , electron , amorphous solid , electrochemistry , anode , alloy , nanometre , cover (algebra) , ion , nanotechnology , chemical engineering , metallurgy , composite material , crystallography , chemistry , electrode , mechanical engineering , physics , organic chemistry , quantum mechanics , engineering
Supercapacitor: Mikio Fukuhara et al. ( see pp. 477–480 ) discovered Ti–Ni–Si glassy alloy supercapacitors that can store electric charge on TiO 2 surfaces that contain many nanometer‐sized cavities. In contrast to the traditional electrochemical reactions, the supercapacitors do not require solutions with ions but directly charge/discharge electrons in wide temperature (∼193–453 K) and voltage (∼200 V) regions under DC and AC applications. The device consists in a distributed constant equivalent circuit of R and C . The cover picture shows de‐alloyed and anodic oxidized amorphous TiO 2 surface, where canyons of ca. 7 nm in size with higher work functions, Φ , of 5.53 eV can directly store electrons. Further gains could be attained with surface optimization.