IP Library Patent Application 17798470
Patent Application
App. No. 17/798,470

NEGATIVE ELECTRODE FOR SECONDARY CELL, SECONDARY CELL, AND NEGATIVE ELECTRODE MATERIAL FOR SECONDARY CELL

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Quick Facts
Patent No.
US None
App. No.
17/798,470
Abstract

Disclosed is a negative electrode for a secondary battery, the negative electrode including: a negative electrode current collector; and a negative electrode mixture layer provided on the negative electrode current collector. The negative electrode mixture layer contains a graphite powder and a polymer electrolyte. A powder compact spring-back ratio of the graphite powder is 15 to 35%. Furthermore, disclosed is a secondary battery including: a positive electrode; the above-described negative electrode; and an electrolyte layer provided between the positive electrode and the negative electrode. Further, disclosed is a negative electrode material for a secondary battery, the negative electrode material containing a graphite powder and a polymer electrolyte.

Claims (18)

1 . A negative electrode for a secondary battery, the negative electrode comprising:

a negative electrode current collector; and

a negative electrode mixture layer provided on the negative electrode current collector,

wherein

the negative electrode mixture layer contains a graphite powder and a polymer electrolyte, and

a powder compact spring-back ratio of the graphite powder is 15 to 35%.

2 . The negative electrode for a secondary battery according to claim 1 , wherein the powder compact spring-back ratio is 20 to 28%.

3 . A secondary battery comprising:

a positive electrode;

the negative electrode according to claim 1 ; and

an electrolyte layer provided between the positive electrode and the negative electrode.

4 . A negative electrode material for a secondary battery, the negative electrode material comprising:

a graphite powder; and

a polymer electrolyte,

wherein

a powder compact spring-back ratio of the graphite powder is 15 to 35%.

5 . The negative electrode material for a secondary battery according to claim 4 , wherein the powder compact spring-back ratio is 10 20 to 28%.

6 . The secondary battery according to claim 3 , wherein the powder compact spring-back ratio is 20 to 28%.

Assignments (3)
CHANGE OF ADDRESS Recorded Feb 9, 2024
From: RESONAC CORPORATION
To: RESONAC CORPORATION
Reel/Frame 066547/0677 →
CHANGE OF NAME Recorded Mar 8, 2023
From: SHOWA DENKO MATERIALS CO., LTD.
To: RESONAC CORPORATION
Reel/Frame 062992/0805 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 14, 2022
From: SERA, YUSUKE; ORITA, AKIHIRO; HOSHI, KENTO; HONBO, HIDETOSHI
To: SHOWA DENKO MATERIALS CO., LTD.
Reel/Frame 061090/0450 →