The development of new energy materials has brought hope to solving energy and environmental problems, has played an important role in the development of new energy, and has spawned a number of new energy storage systems and their industries. In the composition of battery materials, electrode materials are an important factor that determines its safety performance, electrochemical performance and future development. The electrode materials currently used all have low conductivity and surface activity, and the direct contact with the electrolyte reacts violently, causing the electrode material to dissolve in the electrolyte, causing material damage, and poor structure and electrochemical stability, which seriously affect the performance of the electrode material. Since 2004 Novoselov and Geim et al. exfoliated two-dimensional graphene nanosheets from graphite. Graphene has good electrical conductivity, thermal conductivity, super high strength, super large specific surface area, room temperature quantum Hall effect and ferromagnetism. It has excellent electrochemical performance and application prospects in the field of new energy batteries. The excellent performance of graphene has attracted great attention to two-dimensional materials, but its application is limited by its difficulty in production and high cost. It is necessary to seek other graphene-like two-dimensional materials with better performance than graphene, cheap and easy to obtain, safe and reliable As a new type of negative electrode material, it has gradually become a new research focus.
Two-dimensional materials refer to crystalline materials with a thickness of only one or a few atoms. Among them, graphene, as a typical representative of two-dimensional materials, has become a research hotspot because of its unique electrical, magnetic, mechanical, and thermal properties. In recent years, the discovery of a new type of two-dimensional material-MXenes has added many new members to the two-dimensional material family. MXenes is a transition metal carbide or nitride, which is prepared by selectively etching the A atomic layer in the MAX phase by a chemical liquid phase method. They have a structure similar to graphene, and their general formula is Mn+1XnTz (where, M is a transition metal element, X is carbon or nitrogen, Tz represents functional groups such as OH, O, F, n=1,2,3). From the structure and performance point of view, MXene is a kind of "conductive hydrophilic clay", Its unique advantages such as high electrical conductivity/thermal conductivity/specific surface area and good mechanical properties give MXene materials unique advantages in the electrochemical field. Because of its unique structure and excellent performance, the application of MXene in energy storage has also attracted much attention.
V2AlC is a member of the MAX phase, and its main use is currently used in the production of MXenes through etching. At present, there is a preparation method that mixes the fluoride salt and hydrochloric acid uniformly, and then adds V2AlC powder to the mixed solution and stirs; place the sample solution after the above uniform stirring in an environment at a certain temperature and react for a certain time; after the above reaction The suspension is washed and centrifuged until it is neutral; the washed sample is dried in a vacuum environment at a certain temperature for a certain period of time to obtain two-dimensional vanadium carbide MXene powder. The use of this technology to prepare two-dimensional vanadium carbide avoids the use of strong corrosive and highly toxic hydrofluoric acid, and the reaction is mild and easy to control; in addition, the prepared two-dimensional vanadium carbide has a larger interlayer spacing and surface area.
Due to its special structure and surface properties, two-dimensional materials play an important role in the fields of energy storage and conversion, catalysis, adsorption and separation. In the future, MXenes will be applied in more fields. The MXenes obtained by etching V2AlC have good quality, so V2AlC is also a very promising MAX phase material.
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years’ experience in providing super high quality chemicals and Nano materials. The V2AlC produced by our company has high purity, fine particle size and impurity content. Lower, please contact us if necessary.
