Increased cycle life of lithium ion battery anode assisted by metal oxide nanoparticles

Nowadays, lithium ion batteries (LIBs) are one of the most popular rechargeable batteries. To increase cycle life of these batteries, many strategies have been adopted, among whichincorporation of metal oxide nanostructures, either as nanofilm or nanoparticle, into electrodes seems to be an effective method. Here, this strategy have been examined on the LIB anode using commercially available Al2O3, SiO2, TiO2, ZnO and Fe2O3 nanoparticles as modifier, andmesocarbon microbead (MCMB) as the active material. Nanoparticle-incorporated anodes were fabricated as follows: specified amounts of MCMB, polyvinylidene fluoride, N-Methyl-2- pyrrolidone, and respective nanoparticle were thoroughly mixing and coated on copper foil byusing a micrometer adjustable film applicator. After drying in oven, the electrodes were rollpressed and cut into disks where served as working electrode. A lithium metal disk and a microporous polyolefine film were used as counter and reference electrodes, and separator,respectively. A 1 M solution of LiPF6 in 1:1 (v/v) ethylene carbonate: diethyl carbonate used as electrolyte. Electrochemical cycle life experiments were conducted on a battery tester using a two-electrode battery test cell. Among the tested nanoparticles, Al2O3 showed the bestperformance in improving cycling stability of the MCMB-based anode

کلیدواژه ها:

Lithium ion battery ، anode ، MCMB ، Metal oxide nanoparticle ، Al2O3