On October 11, associate researcher Liu Jinyun from Hefei Institute of Material Science, Chinese Academy of Sciences (from Liu Jinhuai and Huang Xingjiu) made new achievements in developing high-performance graphene lithium-ion battery materials and developed high-capacity cyclically stable three-dimensional graphene nano Composite lithium-ion battery materials, with three-dimensional orderly stable structure, high active material loading, short-distance electron ion transport path and so on.

For graphene batteries, we have long been familiar. Graphene is a kind of nanostructure unit composed of materials, with high strength, high elasticity and high conductivity. Traditional graphene is dispersive, requiring additives such as binders to be added during cell assembly, resulting in reduced battery capacity and increased instability. This new achievement, whether made a breakthrough on the basis of the past, this reporter specifically contacted the teacher Liu Jinyun, but also invited other experts in the battery industry to be interpreted.

Compared with the past, the three-dimensional graphene battery material has two main bright spots:

1. This graphene is a "long-range and orderly" three-dimensional nano-structure, which enhances the stability of battery materials and provides an excellent channel environment for lithium ion diffusion. It is an important direction for the development of high-stability graphene batteries.

2. The combination of graphene and active materials into a nano-scale "sandwich" structure can greatly increase the active material loading and shorten the electron transport path.

Chinese Academy of Sciences research and development of three-dimensional graphene

It is these highlights that have led to an increase in material capacity and cycle stability of 3D graphene batteries, which is a new revelation for the future development of new battery systems. At the same time, Liu Jinyun and some experts also pointed out that the current study of the three-dimensional graphene battery materials in the preparation process route (for example: chemical vapor deposition method) and the industrialization of mass production conditions convergence, further research needs further; the same time, the material system Also need to further optimize to meet the lithium-ion battery industry system.

To sum up, this new achievement is not a gimmick and is a real progress. At present, graphene materials in our country are in a crucial period from laboratory to industrialization. Influenced by factors such as production technology conditions, industrialization application and price, there is still a long way to go for truly mature commercialization. Hope is always good, and good things never go away.

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