Electrode based on sub-nano tellurium and graded pore carbon fiber and preparation method thereof

• Main Authors: CHEN DA, MI JUNKAI, LI KEXIN, QIN LAISHUN, HUANG YUEXIANG, YU DANDAN
• Format: Patent
• Language: Chinese; English
• Published: 04.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention belongs to the technical field of electrochemistry, and particularly relates to an electrode based on sub-nano tellurium and graded pore carbon fibers and a preparation method of the electrode. The invention provides a nitrogen and phosphorus co-doped porous carbon fiber electrode loaded with sub-nano tellurium and a preparation method thereof, and is characterized in that tellurium immobilization and adsorption of multi-telluride are enhanced through the space confinement effect of micron pores in carbon fibers and nitrogen and phosphorus co-doping; and the volume change of the electrode in the circulation process and the shuttle effect of the multi-telluride are inhibited. Compared with non-doping and single nitrogen doping, the space confinement effect of micron holes in the nitrogen-phosphorus co-doped carbon fiber ensures the formation of sub-nano tellurium, the tellurium loading capacity is effectively improved, volume expansion and multi-telluride dissolution are slowed down, and the elec