Synthesized Li4Ti5O12 from Technical Grade Raw Material by Excess LiOH.H2O as Anode Lithium Ion Battery

[摘要] Li4Ti5O12powder as anode lithium ion battery was synthesized via solid state reaction with excess LiOH.H2O. Technical grades raw materials like LiOH.H2O and TiO2were used as starting materials. LiOH.H2O excess was varied from 0; 2.5; 5 and 7.5% to get higher optimum phases and capacity of Li4Ti5O12. All raw materials were mixed stoichiometry then followed by calcination and sintering process to get final products. The obtained products were characterized by XRD, SEM, and PSA to get properties of active materials and the electrochemical properties were done by cyclic voltametry and charge-discharge test. The XRD test showed that 5% excess have highest Li4Ti5O12phases. All samples have same in morphology, agglomerate and same in particle size distribution. Sample with 5% excess showed good reversible process and chargedischarge test showed that increasing Li4Ti5O12phase can improve specific capacity.

[发布机构] Research Center for Physics-LIPI, Kawasan PUSPIPTEK Gedung, 442 Serpong, Tangerang Selatan, Banten; 15314, Indonesia^1;Faculty of Science and Technology, State Islamic University, Jl. Ir. H. Juanda No.95, Ciputat, Jakarta; 15412, Indonesia^2

[效力级别] 物理学

[关键词] Active material;Anode lithium ion batteries;Charge discharge tests;Cyclic voltametry;Li4Ti5O12;Reversible process;Sintering process;Specific capacities