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  • 专利标题:   Packaging for flexible secondary battery used in e.g. hybrid vehicle, has reduced graphene oxide sheets in reduced graphene oxide layer, which form electrostatic interactions between reduced graphene oxide sheets adjacent to each other.
  • 专利号:   WO2020080919-A1, KR2020044715-A
  • 发明人:   KWON Y, LIM J, UHM I, LEE J, LIM J W
  • 专利权人:   LG CHEM LTD
  • 国际专利分类:   B32B027/30, B32B027/32, B32B033/00, B32B007/12, H01M010/04, H01M010/058, H01M002/02
  • 专利详细信息:   WO2020080919-A1 23 Apr 2020 H01M-002/02 202037 Pages: 34
  • 申请详细信息:   WO2020080919-A1 WOKR013847 21 Oct 2019
  • 优先权号:   KR125542

▎ 摘　　要

NOVELTY - The flexible secondary battery packaging is in the form of a tube surrounding the outer surface of the electrode assembly. The flexible secondary battery packaging has multiple reducing graphene oxide sheet (2320). A moisture barrier film includes a reduced graphene oxide (rGO) layer (230) and a sealant layer located on one of the one side and the other side of the reduced graphene oxide. A polymer heat shrink tube surrounds the outermost side of the moisture barrier film. Multiple reduced graphene oxide sheets in the reduced graphene oxide layer form electrostatic interactions between the reduced graphene oxide sheets adjacent to each other. The reduced graphene oxide sheet is lithium ions, potassium ion, silver ion, magnesium ions, calcium ions, copper ions, lead ions, cobalt ions, aluminum ions, chromium ions, and iron ions. USE - Packaging for flexible secondary batteries such as lead-acid batteries, nickel-cadmium batteries, nickel-metal hydrid batteries, lithium-ion batteries, and lithium-ion polymer batteries used in hybrid vehicles and electric vehicles. ADVANTAGE - The moisture barrier film is present between the electrode assembly and the heat shrink tube, so that moisture and/or gas flowing into the secondary battery can be prevented. An electrostatic interaction is formed between the reduced graphene oxide sheets constituting the reduced graphene oxide layer, thus effectively blocking a path through which moisture and/or gas can be introduced. The packaging material for the flexible secondary battery itself has flexibility, since the metal layer such as aluminum is not used in the packaging for the flexible secondary battery, thus stress generated when the flexible secondary battery is bent can be alleviated. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of manufacturing a packaging for a flexible secondary battery. DESCRIPTION OF DRAWING(S) - The drawing shows an internal cross-sectional view schematically showing a reduced graphene oxide layer. Reduced graphene oxide layer (230) Reduced graphene oxide particles (2310) Reducing graphene oxide sheet (2320)