Iwilltalkaboutmyresearchprojectnow.Iwanttotellyouaboutmypaper.Iwillexplainmywork.Ihopeyouunderstandit.Mypaperisaboutsolarenergy.Solarenergyispowerfromthesun.Wecanusethispowerforourhomes.Wecanuseitforourcars.Itisacleanenergy.Itdoesnotmakepollution.Thisisveryimportanttoday.Ourworldneedscleanenergy.

Istartedwithaquestion.Myquestionwassimple.Howcanweusemoresolarpower?Manypeoplehavesolarpanels.Thesepanelscatchsunlight.Theyturnsunlightintoelectricity.Butthereisaproblem.Thesundoesnotshineallthetime.Atnight,thereisnosun.Oncloudydays,thereislesssun.Weneedawaytosavetheenergy.Weneedtostoreitforlateruse.

Myprojectlookedatstorage.Istudiedbatterysystems.Batteriescanstoresolarpower.Wecanusethepoweratnight.Wecanuseitoncloudydays.Itesteddifferentbatterytypes.Iwantedtofindagoodbattery.Agoodbatteryisnottooexpensive.Itmustlastalongtime.Itmustbesafetouse.Ididmanytestsinmylab.Icollecteddataforsixmonths.Iwrotedownallthenumbers.Ilookedattheresults.

Mymethodwasstep-by-step.Ibuiltasmallsolarsystem.Iusedasmallsolarpanel.Iconnectedittodifferentbatteries.Iusedthreebatterykinds.Thefirstkindwasalead-acidbattery.Thisisanoldtype.Itisheavy.Itisnotveryefficient.Thesecondkindwasalithium-ionbattery.Thisisanewertype.Itisinphonesandcars.Thethirdkindwasasaltwaterbattery.Thisisaverynewtype.Itisverysafe.Ithasnotoxicmaterials.

Imeasuredtheenergyinput.Imeasuredtheenergyoutput.Itrackedthetemperature.Inotedthechargingspeed.Icheckedhowlongeachbatterylasted.Irepeatedeachtesttentimes.Imadesuremydatawascorrect.Iusedsimpletools.Iusedamultimeter.Iusedacomputerforrecording.Imademanychartsandgraphs.

Myfindingswereclear.Thelithium-ionbatterywasthemostefficient.Itstoredthemostenergy.Itreleasedthemostenergy.Itwasthefastesttocharge.Butithasproblems.Itcangetveryhot.Itisexpensive.Thematerialsarehardtoget.Thelead-acidbatterywastheleastefficient.Itwasbigandheavy.Itdidnotlastlong.Butitisverycheap.Thesaltwaterbatterywasinthemiddle.Itwasnotthemostefficient.Butitwasverystable.Itstemperaturedidnotchangemuch.Itisverysafe.Itiseasiertorecycle.Itsmaterialsarecommon.

Ithoughtaboutcost.Ithoughtaboutsafety.Ithoughtabouttheplanet.Thebestbatterydependsontheneed.Forahome,safetyisveryimportant.Asaltwaterbatterymightbegood.Foracar,spaceandweightmatter.Alithium-ionbatterymightbebetter.Foraplacewithlittlemoney,costmattersmost.Alead-acidbatterycouldwork.

Myworkhaslimits.Mysystemwassmall.Arealhomesystemismuchbigger.Ionlytestedforsixmonths.Abatteryshouldlastforyears.Ididnottestinverycoldweather.Ididnottestinveryhotweather.Morestudyisneeded.Someoneshoulddolongertests.Someoneshouldtestindifferentplaces.

Thisworkcanhelppeople.Itcanhelpfamilieschooseabattery.Itcanhelpcompaniesmakebetterproducts.Itcanhelpourplanet.Usingmoresolarpowerisgood.Storingitwellisthekey.Weneedbetterstoragetousemoresunpower.

Iwanttothankmyteacher.Shehelpedmeplanmyproject.Iwanttothankmyschool.Itgavemealabtoworkin.Iwanttothankmyfriends.Theylistenedtomyideas.

Iamdonewithmytalk.Iamreadyforyourquestions.Youcanaskmeanything.Iwilltrymybesttoanswer.Thankyouforyourtime.Thankyouforlisteningtome.