Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/193450
Kind Code:
A1
Abstract:
Provided is a negative electrode active material having high capacity and good cycle and rate characteristics. Also provided are a secondary battery comprising the negative electrode active material, and an electronic apparatus comprising the secondary battery. Nano-silicon is mixed with a solid electrolyte comprising lithium, titanium, phosphorus and oxygen, and graphene oxide is further added thereto. Thereafter, the graphene oxide contained in the mixture is reduced by using ethanol in which ascorbic acid and lithium hydroxide hydrate have been dissolved, thereby producing the negative electrode active material. The solid electrolyte may further contain aluminum.
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Inventors:
MIKAMI MAYUMI (JP)
ISHIKAWA JUN (JP)
FUJITA MIKU (JP)
NARITA KAZUHEI (JP)
ISHIKAWA JUN (JP)
FUJITA MIKU (JP)
NARITA KAZUHEI (JP)
Application Number:
PCT/IB2019/052418
Publication Date:
October 10, 2019
Filing Date:
March 26, 2019
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H01M4/38; H01M4/36; H01M4/62
Foreign References:
| JP2014192093A | 2014-10-06 | |||
| JP2016149238A | 2016-08-18 | |||
| JP2013191552A | 2013-09-26 |
Other References:
YUE, HONGWEI ET AL.: "High-yeild fabrication of grapheme-wrapped silicon nanoparticles for self- support and binder-free anodes of lithium-ion batteries", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 744, 8 February 2018 (2018-02-08), pages 243 - 251, XP055644279
"Series of functional chemistry of electrons and ions", NEXT-GENERATION LITHIUM SECONDARY BATTERY", vol. 3, 26 May 2003, article "Series of functional chemistry of electrons and ions", pages: 312
"Series of functional chemistry of electrons and ions", NEXT-GENERATION LITHIUM SECONDARY BATTERY", vol. 3, 26 May 2003, article "Series of functional chemistry of electrons and ions", pages: 312
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