Lithium-sulfur battery containing polycarboxylate

• Main Author: LI XIUTAO
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a lithium-sulfur battery containing polycarboxylate, belonging to the technical field of lithium-sulfur batteries. The lithium-sulfur battery containing polycarboxylate is characterized in that the internal structure of the polysulfonate-containing lithium-sulfur battery is composed of a positive current collector, a positive electrode material, a porous diaphragm and a negative plate from bottom to top, wherein the positive electrode material is added with polycarboxylate so as to form a polycarboxylate-containing positive electrode material. According to the invention, since polycarboxylate is added into the lithium-sulfur battery and polycarboxylate can effectively suppress the influence of the shuttle effect of polysulfide anions in the lithium-sulfur battery,the lithium-sulfur battery is improved in cycle performance of and the effective availability of active substances and has the advantages of high coulombic efficiency, high energy density, long cyclelife, simple fabrication,