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Information × Registration Number 0215U001229, 0113U003056 , R & D reports Title New high energy electrode materials for lithium-ion and metal hydride batteries popup.stage_title Head Pavlyuk Volodymyr Vasyl'ovych, Registration Date 03-02-2015 Organization Ivan Franko National University of Lviv popup.description2 New anode materials based on the alloys from systems, containing lithium, magnesium and zinc, have been synthesized. The crystal structures of 60 new compounds were investigated, among them 12 belong to new structure types, 36 solid solutions were found and the existence of 43 compounds was confirmed, their electrochemical properties were investigated. Phase equilibria in 16 ternary systems were ascertained for the first time. Alloys from the systems Li-B-C and Li-Mg-Si were tested as anode materials for lithium batteries, the hydrogen absorption and desorption capabilities of these alloys and their charge-discharge properties were also studied. A new class of superlight hydrides for hydrogen storage, based on intermetallic compounds Li2+xMg1-xSi (x = 0.268), Li65-x+yMg30+x-ySi33 (x = 9.15, y =1.23), Li7-x+yMg5+x-ySi4 (x = 1.14, y = 0.61) and Lix+yMg2-xSi (x = 0.51, y = 0.39), has been developed. Maximum hydrogen mass fraction of these materials equals 8.8%. The alloys LaT5-x(M/Li)x, tested as anode materials in Ni-MH rechargeable cells, showed good cycling behaviour and capacity. Al-doped ternary alloys LaCo4.6Al0.4 and LaNi4.6Al0.4 have higher capacity, service life and more stable charge-discharge behaviour, compared to binary alloys LaCo5 and LaNi5 (28 and 21 % higher discharge capacity respectively). Further Li-doping improves the discharge performance up to 25 % more. Product Description popup.authors Дмитрів Г.С. Зелінська О.Я. Ощаповський І.В. Тарасюк І.І. popup.nrat_date 2020-04-02 Close