CONDUCTING COMPOSITE CARBO-CONTAINING MATERIAL AND METHOD OF ITS FABRICATION Russian patent published in 2010 - IPC H01M4/02 B81B1/00 

FIELD: electrical engineering.

SUBSTANCE: carbon-containing composite conducting material, based on low-conductivity material mixed with conducting carbon additive and binder, incorporates nano-composite material. The latter uses as low-conductivity material nanoparticles aggregates fluorocarbon, manganese dioxide, semiconductors and/or the mixes thereof, while as conducting carbon additive represents aggregates of carbon nanoparticles with oxidised surface. Note here that said nano-sized aggregates in composite material have chemical interfacial nano-sized electrical carbon contacts and/or current pick-offs there between. Note also that said chemical interfacial nano-sized electrical carbon contacts and/or current pick-offs realised via antiparticles chemical bonds of sp²- and sp³-carbon with outer atoms of low-conductivity particles surface, while semiconductor is represented by silicon or A³B⁵-type semiconductors. Besides carbon additive represents thermally expanded graphite, technical hydrocarbons, e.g. ashes, containing surface oxygen-containing surface groups of oxidized sp² -and sp³ -carbon ratio of low-conductivity material particles in the mix makes 100:1-1:100. While specific resistance of obtained nano-composite materials makes 0.1-10¹² Ohm*cm and it can be preset by ratio between the number of low-conductivity material particles and those of conducting carbon with oxidised surface taken in the range of 100:1-1:10, respectively. Note also that size of low-conductivity material aggregate nanoparticles varies from 2-100 nm, that in conducting carbon additive aggregate nanoparticles with oxidised surface varies from 1-20 nm. Above described material is produced by mixing initial components and their treatment. Note here that low-conductivity material particles are mixed with conducting carbon additive with oxidised surface prior to mixing with binder, and low-conductivity material powder particles are mixed with conducting carbon additive with oxidised surfaces of particles. Target mix is subjected to nano-mechanical treatment to produce intermediate nano-composite to be mixed with binder and subjected to drying at 105-150°C until constant weight is produced.

EFFECT: producing new types of conducting composite materials with wide range of specific resistance to be used in lithium current sources.

8 cl, 11 dwg, 8 tbl, 5 ex