T/CGIA 032-2020 Lithium-ion battery graphene conductive paste
T/CGIA 032-2020 Lithium-ion battery graphene conductive paste
Basic Information
Scope
Scope: This standard specifies the technical requirements, test methods, and acceptance rules for graphene conductive pastes used in lithium-ion batteries. This standard applies to the inspection and acceptance of graphene conductive pastes for lithium-ion batteries. Other carbon-based conductive pastes may also be referenced for implementation; Main technical content: Graphene materials, with their excellent conductivity, have become one of the widely used conductive media in cathode materials for lithium-ion batteries. With the development of graphene material preparation technology and the continuous deepening of application technology understanding, graphene conductive pastes show two new development trends: (1) Graphene materials are moving towards thinner and smaller sizes, exhibiting superior conductivity and requiring less usage in batteries, leaving room for continuous improvement of battery energy density; (2) Downstream customers' demand for conductive pastes is shifting from graphene-composite conductive pastes to pure graphene materials. These two trends provide important guidance for the development of this standard. Prior to the release of this standard, there were only national and international standards related to carbon nanotube pastes, namely the national standard GB/T 33818-2017 "Carbon Nanotube Conductive Paste" and the international standard ISO/TS 19808-2019 "Nanotechnology - Carbon Nanotube Suspension: Specification of Characteristics and Measurement Methods", with no national, international, or group standards for graphene conductive pastes yet published. Compared with the above two standards, this standard focuses on the lithium-ion battery application field, establishing comprehensive evaluation technical parameters and test methods for lithium-ion battery cathode materials conductive agents; and establishing corresponding technical parameter requirements based on the unique characteristics of graphene materials. Therefore, this standard