China energy storage net news: the reporter learns from hefei university of technology, the scientific research personnel by adjusting the layered structure of transition metal disulfide belong to compound interlayer distance between molecules, implements the electrode electrochemical energy storage materials and catalytic performance improved, for the development of high-performance electrical catalysis and energy storage device has opened up a new path.
The research has been published in international journals such as nano energy and advanced energy materials.
Layered disulfide belong to transitional metal nano films with layer controllable, single-layer thickness thin, two-dimensional channel between the layers rich, the interlayer characteristics such as large surface area, excellent electrochemical performance, in the secondary battery, super capacitor, electric catalytic and electrochemical device has good development prospects.
However, due to the narrow distance between the layers of the traditional laminated materials, the resistance of ions between the layers of the material is larger, thus limiting its electrochemical properties.
Hefei university of technology institute of electronic science and applied physics professor huh handsome team, in collaboration with the city university of Hong Kong researchers, the layer spacing of molybdenum disulfide nanometres wide is changed from 0.615 to 0.99 nm, which promote the rapid transmission of sodium ions, improve the electronic conductivity of the material.
The experimental results show that the nanometer material with the width of the layer is wide, and the performance of electrode material and the stability of energy storage can be greatly improved.
"By the external force to broaden the distance between the, can significantly reduce plasma lithium, sodium, magnesium transfer resistance between the layers, thus improving these nanomaterials in ion electrochemical properties of embedded type energy storage device."
The results can be applied to lithium ion batteries, sodium ion batteries, magnesium ion batteries and supercapacitors to significantly improve the performance of energy storage devices, professor xu said.