웨어러블융합전자연구소 초청 세미나_1/11(목) 10:00
세미나 제목 : Safe and advanced electrode materials for next generation Zinc-IonBatteries.Abstract: Lithium ion batteries (LIBs) are promising energy sources for portable electronics, electricvehicles (EVs) and hybrid electric vehicle (HEVs) etc. However, limited lithium resourcesand the safety issue with the organic electrolyte impede its application in large-scale energystorage. Sodium batteries (SIBs) are possible alternative for LIBs concerning its cost andhighly abundant. However, arising with safety issue with sodium metal and organicelectrolyte, which are may not be suitable for constructing advanced next generation batteriesfor EVs and HEVs Recently, multivalent aqueous batteries including calcium (Ca)-ion,magnesium (Mg)-ion, (Al)-ion, and zinc (Zn)-ion batteries showing better electrochemicalproperties, lower cost and safer than LIBs and SIBs. Among those, aqueous Zn-ion batteries(AZIBs) exhibit the excellent electrochemical characteristics including, high theoreticalcapacity (820 mA h g -1 and 5854 mA h cm -3 ), and low standard electrode potential (vs. SHE ~0.76 V). In addition, metallic zinc exhibit excellent stability in aqueous electrolytes (alkaline,neutral, and weakly acidic). Therefore, AZIBs considered as the advanced batteries for thefuture generation energy storage. However, finding the suitable cathode materials for AZIBsis major obstacle. So far, manganese oxides based cathodes, vanadium (V) based cathodes,organic compounds and Prussian blue analogues (PBAs) were utilised as popular cathodematerials of AZIBs. The PBAs cathodes support for high voltages but delivered very lowspecific capacity. The Mn-based cathodes support for high specific capacity and with standfor high voltages. But the dissolution Mn in electrolyte is the major issue result in capacityfading upon the cycling process. Recently, V-based cathodes have attracted much attention acathode for AZIBs owing to their unique advantages, such as their layered structure with richmixed oxidation states and low cos. The layered vanadium oxide (V 2 O 5 ) acts as an excellentcathode among the V-based cathodes owing to its multiple oxidation states and lowcost. However, poor electrical conductivity and unstable crystal structure during the cycles ＊일시 : 2024.1.11.(목) 오전 10:00 ＊장소 : 온라인 참가 Zoom 회의https://khu-ac.zoom.us/j/8353466721회의 ID: 835 346 6721 ＊초청연사: Daulatabad Narsimulu 박사( 울산대학교)
Institute for Wearable Convergence Electronics
