Agafonov Dmitrii Valentinovich RussiaSt.-Petersburg Saint Petersburg State Institute of Technology (technical University), 26, Moskovsky Ave., Saint Petersburg, 190013head of the departmentCandidate of Technical Sciencesphti@lti-gti.ru Author's articles The LiFePO4-electrode process features in Li-ion batteries Organic esters of phosphoric acid as solvents for the electrolyte for lithium-ion systems and supercapacitors Comparison of traditional organic solvents with phosphoric acid esters in lithium-ion and supercapacitor technologies