Title:
FABRICATION METHOD OF LITHIUM SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2020177919
Kind Code:
A
Abstract:
To provide graphene increased in conductivity as to graphene produced from graphene oxide and a fabrication method thereof, and further provide an electrical storage device which enables the increase in charge/discharge capacity and has good electric characteristics including the reliability and durability, and a fabrication method thereof.SOLUTION: A method for producing graphene comprises the steps of: forming a layer containing graphene oxide on a first conductive layer; and supplying an electric potential, at which a reductive reaction of graphene oxide is caused, for an electric potential of the first conductive layer in an electrolyte solution in which the first conductive layer serving as an action electrode and a second conductive layer making a counter electrode are immersed. A fabrication method of an electrical storage device, which has at least, a positive electrode, a negative electrode, an electrolyte solution and a separator, comprises the step of producing graphene by the above method for one or each of the positive and negative electrodes.SELECTED DRAWING: Figure 1
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Inventors:
TODOROKI HIROATSU
YONEDA YUMIKO
KAWAKAMI TAKAHIRO
NOMOTO KUNIHARU
YUGAWA MIKIO
YONEDA YUMIKO
KAWAKAMI TAKAHIRO
NOMOTO KUNIHARU
YUGAWA MIKIO
Application Number:
JP2020117572A
Publication Date:
October 29, 2020
Filing Date:
July 08, 2020
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB CO LTD
International Classes:
H01M4/139; C01B32/182; C01B32/198; H01M4/62; H01M10/052; H01M10/0566; H01M10/058
Domestic Patent References:
| JP2010275186A | 2010-12-09 |
Foreign References:
| US20110183180A1 | 2011-07-28 | |||
| WO2011069348A1 | 2011-06-16 | |||
| US20110227000A1 | 2011-09-22 |
Other References:
Y. HARIMA ET AL.: "Electrochemical reduction of graphene oxide in organic solvents", ELECTROCHIMICA ACTA, vol. Vol.56, Issue 56, JPN6014027294, 4 April 2011 (2011-04-04), pages 5363 - 5368, ISSN: 0004562927
脊戸土井淳他: "グラフェン酸化物の電気化学挙動と電気二重層キャパシタへの応用", 日本化学会講演予稿集, vol. 91, no. 2, JPN6016016176, 11 March 2011 (2011-03-11), JP, pages 513, ISSN: 0004562928
脊戸土井淳他: "グラフェン酸化物の電気化学挙動と電気二重層キャパシタへの応用", 日本化学会講演予稿集, vol. 91, no. 2, JPN6016016176, 11 March 2011 (2011-03-11), JP, pages 513, ISSN: 0004562928