Title:
リチウムイオン二次電池の負極活物質用ナノ粒子集合体の製造方法
Document Type and Number:
Japanese Patent JP7152945
Kind Code:
B2
Abstract:
To provide a manufacturing method of a nanoparticle assembly for use in a negative electrode active material for a lithium ion secondary battery, the nanoparticle assembly being capable of effectively increasing volume energy density by achieving higher density of a negative electrode layer of a lithium ion secondary battery while comprising cerium oxide nanoparticles, resulting in capable of exhibiting excellent battery capacity.SOLUTION: A manufacturing method of a nanoparticle assembly for use in a negative electrode active material for a lithium ion secondary battery, the nanoparticle assembly exhibiting a specific shape, includes the following steps (I)-(II) of: (I) obtaining a slurry (X) by dispersing cellulose nanofibers and/or ligno-cellulose nanofibers having an average fiber diameter of less than or equal to 50 nm into a solvent; and (II) subjecting an obtained slurry (X) and a slurry (Y) prepared from a cerium compound to a hydrothermal reaction to thereby obtain a nanoparticle assembly comprising cerium oxide nanoparticles and cellulose nanofibers and/or ligno-cellulose nanofibers.SELECTED DRAWING: Figure 1
Inventors:
Jun Ikegami
Hiroki Yamashita
Okami Gosho
Hiroki Yamashita
Okami Gosho
Application Number:
JP2018230525A
Publication Date:
October 13, 2022
Filing Date:
December 10, 2018
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
H01M4/48; H01M4/36
Domestic Patent References:
| JP2018166100A | ||||
| JP2018154545A |
Foreign References:
| CN106450104A |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation