IDEA #5MQYPZ The Development Of New Nanodispersed Oxide Materials For The Novel Electric Energy Power Sources

SCIENTIFIC INNOVATIVE PROJECTS FROM MINISTRY OF EDUCATION AND SCIENCE AND NATIONAL ACADEMY OF SCIENCES OF UKRAINE THE DEVELOPMENT OF NEW NANODISPERSED OXIDE MATERIALS FOR THE NOVEL ELECTRIC ENERGY POWER SOURCES Description Known electrochemical electric energy sources dissatisfy the requirement of modern electronics and electrical engi(cid:28) neering because the specific energy capacity of electrode materials are not very high. The current formation processes in most modern galvanic elements are based on the use of alkaline metals intercalation, for example lithi(cid:28) um, in the structure of "host"– materials. The development of effective, cheap and ecology safe cathode materials for modern electrochemical power sources is the actual theo(cid:28) retical and practical task. Among the wide range of per(cid:28) spective cathode materials (layered chalcogenide, spinels, carbon materials) nanopowder oxide materials are very interesting, especially titania and silica. Technology rec(cid:28) ommendation and solution based on the complex physical(cid:28) chemical studies of current formation processes in electro(cid:28) chemical power sources on the base of nanodispersed silica, titania and composite materials on their base make possi(cid:28) ble it utilization as commercial successful cathode materi(cid:28) als for lithium(cid:28)ion power sources. The primary purpose of our work is consisted in finding out of lithium ions "guest" kinetics of basic regularities in crystalline and nanodis(cid:28) persed modifications titania and silica and also investiga(cid:28) tion of dispersion degree influencing of powder materials on specific power characteristic of electric energy sources. For investigation of lithium ions interstitial process we use the methods of quantum(cid:28)chemical modeling, chemical potential spectroscopy, optical spectroscopy, mossbauer spectroscopy, impedance spectroscopy and X(cid:28)ray diffrac(cid:28) tion. Areas of Application Electric energy generation Stage of Development · Patented · Prototype available for testing Pic. 1. Discharge voltage dependences of electrochemical cell as a function of lithium ion "guest" loading degree base of fumed silica – carbon nanocomposite with the spe(cid:28) cific capacity and specific energy, which exceed in 1.5—2 times the characteristics of known commercial electro(cid:28) chemical lithium sources on the base V6O13 or TіS2 are developed. Innovative Aspect and Main Advantages · the technological methods of effective, cheap and ecology safe nanodispersed cathode materials on the silica and tita(cid:28) nia base with the low agglomerations degree obtaining and utilization are developed; · the technological conditions of resistance additions uni(cid:28) form distribution between the fumed silica and titania par(cid:28) ticles with the purpose of bringing as possible greater size of TiO2 and SiO2 surface for participation in an electro(cid:28) chemical process are established;cathode materials on the Contact Details Vasyl Stephanyk Precarpathian National University, Department of Material Science and New Technology Myronyk Ivan F., vice(cid:28)rector, PhD (chemical science), 76025, Ivano(cid:28)Frankivsk, Shevchenko St.,57. Fax (+380)342231574 Phone (+380)342596029 myrif@rambler.ru 86 SCIENCE AND INNOVATION. Special Issue, 2007