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Your search keyword '"Sakuda, Atsushi"' showing total 29 results
Start Over Author "Sakuda, Atsushi" Journal solid state ionics
29 results on '"Sakuda, Atsushi"'

27. Preparation of Li2S–GeS2 solid electrolyte thin films using pulsed laser deposition

Author

Ito, Yusuke, Sakuda, Atsushi, Ohtomo, Takamasa, Hayashi, Akitoshi, and Tatsumisago, Masahiro

Subjects
*ELECTRIC properties of thin films, *SOLID electrolytes, *PULSED laser deposition, *LITHIUM compounds, *AMORPHOUS substances, *IONIC conductivity
Abstract

Abstract: Amorphous Li2S–GeS2 solid electrolyte thin films were prepared using pulsed laser deposition (PLD) at the compositions of 67–83mol% Li2S. The ionic conductivities at room temperature increased with increasing Li2S contents and attained a maximum value of 1.8×10−4 Scm−1 at the composition of 78mol% Li2S. The obtained solid electrolyte thin film was applied to form an ideal electrode–electrolyte interface in all-solid-state batteries. The all-solid-state lithium cell using LiCoO2 coated with the solid electrolyte thin film operated as a lithium secondary battery at room temperature. [Copyright &y& Elsevier]

Published
2013
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28. Preparation of amorphous Li4SiO4–Li3PO4 thin films by pulsed laser deposition for all-solid-state lithium secondary batteries

Author

Sakurai, Yuki, Sakuda, Atsushi, Hayashi, Akitoshi, and Tatsumisago, Masahiro

Subjects
*AMORPHOUS substances, *THIN films, *PULSED laser deposition, *SOLID state chemistry, *LITHIUM ions, *STORAGE batteries
Abstract

Abstract: Amorphous thin film electrolytes in the system Li4SiO4–Li3PO4 were prepared by pulsed laser deposition (PLD). The ionic conductivity of the amorphous film at the composition 50Li4SiO4·50Li3PO4 (mol%) was 1.6×10−6 Scm−1 at room temperature which is higher than the conductivities of Li3PO4 and Li4SiO4 films. The 50Li4SiO4·50Li3PO4 film was coated on LiCoO2 active material particles by PLD. All-solid-state lithium secondary batteries using the coated LiCoO2 electrode and the Li2S–P2S5 solid electrolyte were fabricated. The PLD coating of oxide film with high conductivity on LiCoO2 was effective in decreasing the electrode/electrolyte interfacial resistance and developing power density of the all-solid-state cells. [Copyright &y& Elsevier]

Published
2011
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29. Application of graphite–solid electrolyte composite anode in all-solid-state lithium secondary battery with Li2S positive electrode.

Author

Takeuchi, Tomonari, Kageyama, Hiroyuki, Nakanishi, Koji, Ohta, Toshiaki, Sakuda, Atsushi, Sakai, Tetsuo, Kobayashi, Hironori, Sakaebe, Hikari, Tatsumi, Kuniaki, and Ogumi, Zempachi

Subjects
*LITHIUM-ion batteries, *GRAPHITE, *SOLID electrolytes, *COMPOSITE materials, *ANODES, *SOLID state chemistry, *SULFIDES, *ELECTRODES
Abstract

Graphite–solid electrolyte (SE) composite anode, prepared by spark-plasma-sintering (SPS) process, was applied to all-solid-state lithium secondary batteries with lithium sulfide (Li2S) positive electrode. The electrochemical tests demonstrated that the graphite–SE/Li2S cells showed the discharge capacity of ca. 750mAh·g−1-Li2S with the average voltage of ca. 1.98V. Although the discharge capacity was lower than that of the In/Li2S cells (ca. 920mAh·g−1-Li2S), the estimated energy density was higher than that (ca. 1490 and 1220mWh·g−1-Li2S for graphite–SE/Li2S and In/Li2S cells, respectively), due mainly to its higher average voltage. The graphite–SE/Li2S cells showed improved rate capability as compared with the cells with the graphite+SE blended powder, which was attributable mainly to the reduced interfacial resistance between the graphite and SE particles caused by the SPS process. [ABSTRACT FROM AUTHOR]

Published
2014
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