Lithium electrochemical systems

УДК 544.6; 621.355

DOI:  https://doi.org/10.18500/1608-4039-2016-16-3-122-150

УДК 541.136

DOI:  https://doi.org/10.18500/1608-4039-2016-16-3-100-121

УДК 541.136+546.33+544.463+541.138

DOI:  https://doi.org/10.18500/1608-4039-2016-16-3-92-99

УДК 541.136

DOI:  https://doi.org/10.18500/1608-4039-2016-16-1-34-41

УДК 544.65+621.355.9

DOI:  https://doi.org/10.18500/1608-4039-2016-16-1-3-9

DOI: 10.18500/1608-4039-2015-15-4-167-174

Produced a new lithium power sources based on an electrochemical system Li/Ag₂O with a solid polymer electrolyte, investigated his discharge characteristics.

This work is dedicated to phosphoric acid esters working as solvents for lithium-ion and supercapacitor (SC) electrolyte. The electrical conductivity of electrolytes based on phosphoric acid esters, lithium salts, commonly used in lithium-ion batteries (LIB), and salts used in SC technology was measured. The thermodynamic stability of new electrolytes in comparison with other solvents used in chemical power sources technology was also estimated. It was shown that the thermodynamic stability of phosphoric acid ester increases in a homologous series.

It is shown that the performance of lithium-ion battery is significantly affected by the component structure of the electrodes, electrode fabrication technology, forming the battery mode. It is shown that in the production of lithium-ion batteries can be used the following materials: as a binder – polymer dispersion of water-based СНР 500, the negative electrode material – synthetic graphite 131181008–1 brands and 20130905.

Multichannel instrument to study batteries and electrochemical cells during charge-discharge cycling, and open-circuit conditions is described. Each channel is a programmable potentiostat-galvanostat operating by an independent program. The accuracy of the stabilization current and potential is 0.01%. The additional sensors with analog output, such as temperature, can be plugged to each channel. The proposed hardware and software solution allows to control experiments, receive measurement data and remote administer the instrument via Ethernet.