Republic of the PhilippinesPangasinan State UniversityUrdaneta City CampusLATEST INNOVATIONSINMATERIALS ENGINEERINGSUBMITTE T!"ENGR. CATHERINE CAOILEINSTRUCTORSUBMITTE B#"KIM P. OSANAB.S. MECHANICAL ENGINEERINGControlling thermal on!"ti#itie$ an im%ro#e energ& $torageDate: $une %& '()*Thethermal conductivity of lithiumcobalto+ide&animportantmaterial forelectrochemical energy storage& can be reversibly electrochemically modulated overaconsiderablerange& researchershavee+perimentallysho,nfor the-rst time.Controlling the /o, of heat through materials is important for many technologies.0hilematerials,ithhighandlo,thermal conductivitiesareavailable& materials,ith variable and reversible thermal conductivities are rare.!netechnologythatmaybedirectlyimpactedbythis,or1isthe-eldofelectrochemical energy storage. Understanding and controlling heat evolution anddissipation in rechargeable batteries is critical. #et prior to this ,or1& it ,as not even1no,nthat thethermal conductivityof materials commonlyusedas cathodeschanged signi-cantly as a function of the state of charge.2 better understanding of the thermal properties of battery electrodes mayhelpinthedesignof batteriesthat canbechargedmorerapidly& deliver morepo,er& and operate ,ith a greater margin of safety& since the heat generated duringfast cycling and temperature variations in general are very detrimental to lithium3ion batteries.4ithium cobalt o+ide is a chemical compound commonly used in the positiveelectrodes 5cathodes6 of lithium3ion batteries. The process of lithiation 5discharging6and delithiation 5charging6 of battery cathode materials is one of the basicelectrochemical processes in lithium ion batteries.Sill& P"tt& Material In$%ire$ Better Batterie$Date:May)7& '()*Engineers use silicon dio+ide to ma1e lithium3ion batteries that last threetimes longer bet,een charges compared to current standardSilicon polymer and battery used for the research.Theteamoriginallyfocusedonsilicondio+idebecauseit isane+tremelyabundant compound& environmentally friendly& non3to+ic& and found in many otherproducts.Silicon dio+ide has previously been used as an anode material in lithium ionbatteries& but the ability tosynthesi8e the material into highly uniforme+oticnanostructures ,ith high energy density and long cycle life has been limited.There 1ey -nding ,as that the silicon dio+ide nanotubes are e+tremely stableinbatteries& ,hichisimportantbecauseitmeansalongerlifespan.Speci-cally&Si!' nanotubeanodes,erecycled)((times,ithoutanylossinenergystoragecapability and the authors are highly con-dent that they could be cycled hundredsmore times.The researchers are no,focused on developed methods to scale upproduction of the Si!' nanotubes in hopes they could become a commercially viableproduct.Ne'lo'(rition oating allo'$ grea$e)(ree l"*riation an! orro$ion%rotetionDate: $une )(& '()*Machine parts ,ear& if there is friction bet,een their metal surfaces.4ubricants and functional oils help prevent this. They attract dirt& debris and dust&andover timeformlumpsor becomeresinous. Machinepartsthenhavetobeintensivelycleanedanddegreased& ,hichleadstomorefre9uent maintenance&greater consumption of resources& polluting ,aste or machine brea1do,ns.Researchers haveno,developedafunctional coating,hichlubricates ,ithoutgrease and protects against corrosion at the same time. It is suitable as a coatingfor metals and metal alloys such as steel& aluminum or magnesium.The roof tile structure not only provides lo,3friction sliding& it also acts as abarrier. This is a particular advantage because as a result the material also preventsmoisture or salts penetrating metal surfaces& thus also protecting against corrosion.In aneutralsaltsprayconte+t& the composite hasacorrosion resistance ofover)((( hours on lo,3alloy steel.Thebondedcoatingcanbeappliedusingclassic,etchemistryprocessessuch as spraying or dipping. The roof tile structure forms by simple thermal curing,ithout any further assistance in self3organi8ation.