Flexible secondary battery, electronic device

Patent metadata

Field	Value
Publication number	US-2016164098-A1
Application number	US-201414901499-A
Country	US
Kind code	A1
Filing date	Jun 26, 2014
Priority date	Jun 28, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

Provided is a flexible secondary battery that can achieve both flexibility and high capacity. The flexible secondary battery has flexibility and includes a lithium ion secondary battery including: a positive electrode and a negative electrode at least one of which contains a flexibilizer in its active material layer; and a Mn-containing active material contained in the positive electrode, wherein a degree of decompression inside the lithium ion secondary battery is 100 to 1000 Pa.

First claim

1 .- 10 . (canceled)

11 . A flexible secondary battery comprising:
a positive electrode and a negative electrode at least one of which contains a flexibilizer in its active material layer; and a Mn-containing active material contained in the positive electrode, wherein a degree of decompression inside the lithium ion secondary battery is 100 to 1000 Pa.

12 . The flexible secondary battery according to claim 1 , wherein the lithium ion secondary battery has a thickness of 1.5 mm or less.

13 . The flexible secondary battery according to claim 1 , wherein the active material contained in the positive electrode is at least one selected from Li(Mn,Co,Ni)O 2 , LiMnO 2 , Li(Li,Mn) 1−x Co x O 2 , and Li 2 MnO 3 .

14 . The flexible secondary battery according to claim 1 , wherein the flexibilizer is an acrylic polymer or a diene polymer.

15 . The flexible secondary battery according to claim 1 , wherein the degree of decompression inside the lithium ion secondary battery is 200 to 800 Pa.

16 . The flexible secondary battery according to claim 1 , wherein the active material contained in the positive electrode is a lithium-excess oxide containing Mn.

17 . An electronic device comprising a flexible secondary battery comprising:
a positive electrode and a negative electrode at least one of which contains a flexibilizer in its active material layer; and a Mn-containing active material contained in the positive electrode, wherein a degree of decompression inside the lithium ion secondary battery is 100 to 1000 Pa, the electronic device being driven by power supplied from the flexible secondary battery.

18 . The electronic device according to claim 7 , comprising a light-emitting element comprising an organic electroluminescent element.

19 . The electronic device according to claim 8 , wherein the light-emitting element and the flexible secondary battery are joined together by bonding.

20 . The electronic device according to claim 8 , wherein the light-emitting element and the flexible secondary battery are integrated together by lamination.

21 . The flexible secondary battery according to claim 2 , wherein the active material contained in the positive electrode is at least one selected from Li(Mn,Co,Ni)O 2 , LiMnO 2 , Li(Li,Mn) 1−x Co x O 2 , and Li 2 MnO 3 .

22 . The flexible secondary battery according to claim 2 , wherein the flexibilizer is an acrylic polymer or a diene polymer.

23 . The flexible secondary battery according to claim 2 , wherein the degree of decompression inside the lithium ion secondary battery is 200 to 800 Pa.

24 . The flexible secondary battery according to claim 2 , wherein the active material contained in the positive electrode is a lithium-excess oxide containing Mn.

25 . The flexible secondary battery according to claim 3 , wherein the flexibilizer is an acrylic polymer or a diene polymer.

26 . The flexible secondary battery according to claim 3 , wherein the degree of decompression inside the lithium ion secondary battery is 200 to 800 Pa.

27 . The flexible secondary battery according to claim 3 , wherein the active material contained in the positive electrode is a lithium-excess oxide containing Mn.

28 . The flexible secondary battery according to claim 4 , wherein the degree of decompression inside the lithium ion secondary battery is 200 to 800 Pa.

29 . The flexible secondary battery according to claim 4 , wherein the active material contained in the positive electrode is a lithium-excess oxide containing Mn.

30 . The flexible secondary battery according to claim 5 , wherein the active material contained in the positive electrode is a lithium-excess oxide containing Mn.

Assignees

• Konica Minolta Inc

Inventors

• Ozeki Hidekane
• Kawakami Akira
• Yagi Tsukasa
• Yoshida Kazuhiro
• Hakii Takeshi
• Kondo Toshiya

Classifications

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• H01M4/622 Primary

  being polymers · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title