Since graphene won the Nobel Prize in Physics in 2010, scientists and industry have been chasing graphene enthusiastically. In the pursuit of graphene, a large number of graphene-like two-dimensional materials have also been found, how to define them accurately is related to the development of related materials industry. Reporters learned from Taizhou Juana New Energy Co., Ltd. on the 17th that the first national standard of graphene GB/T 30544.13-2018, drafted by the company, was officially released: Part 13 of nanotechnology terminology: graphene and related two-dimensional materials. This standard is also the first national standard in the field of two-dimensional materials. The family of graphene-like two-dimensional materials involves a wide range of disciplines and a wide range of types. It has been showing a trend of multi-point blossom, new phenomena and new applications.

Two-dimensional materials are one of the most advanced research and application fields. They cover printing electronics, flexible electronics, supercapacitors, solar cells, quantum dots, sensors, semiconductor manufacturing and so on. They have excellent mechanical, thermal and optical properties, and are the basis of subversive innovation in many fields. According to the definition of national standard, it consists of one or several layers, in which the atoms in each layer are closely bonded with the neighboring atoms in the layer. One dimension (i.e. its thickness) is in the nanometer or smaller scale. The other two dimensions are usually in the larger scale of materials, called two-dimensional materials. What are the excellent properties of two-dimensional materials? Because the surface atoms of single-layer two-dimensional materials are almost completely exposed, compared with bulk materials, the atomic utilization rate is greatly improved. The band structure and electrical properties can be easily controlled by thickness control and element doping. Therefore, two-dimensional materials are more conducive to chemical modification and electron transfer. At the same time, they have high flexibility and transparency, and have attractive prospects in wearable smart devices, flexible energy storage devices and other fields. The first national standard for graphene and two-dimensional materials in China was drafted by Taizhou Juana New Energy Co., Ltd. and Southeast University. The former was established in 2010 and is one of the earliest companies engaged in graphene research, testing, application and standardization in China.