==== Denik ==== 2020.04.07 200ml do toho 0.1mol (28.75g) ZnSO4.7H2O a 0.2mol (20.58g) NaBr odparit na cca 40ml, nechat vysrazet na2so4 pak jeste pridat 2,05g NaBr a doredit na 40ml baterie * #1 6.5ml elektrolytu, nabijeno 100mA cca 20 minut zacal tect brom. * #2 4ml elektrolytu, nejde zavrit neprodysne * #3 4ml elektrolytu 2020.04.08 * #3 nabijena 50mA a cca 3.88V po cca 36min napeti 4.51V pri 50mA, po sesti minutcha cca 1.8V ale po pripojeni motoru se neroztoci a baterka ma 0.04V, lampicka sviti.. na baterce cca 200mV, na vystupu 2.5V, po cca ctvrt hodine na baterce 0.17V, pak 1L05 cca 50mA * #4 6ml elektrolytu zacala nabijeni na 3.3v pri 50mA, prosakuje na plose pres grafit. asi to chce vic folie. * #5 uhli 0.6-0.8mm 1.4g a zinkovej plech, nafukuje se * #2 pridany 2ml, druhy pokus o uzavreni, tece plochou * #6 6ml elektrolytu 2020.04.07 200ml do toho 0.1mol (28.75g) ZnSO4.7H2O a 0.2mol (20.58g) NaBr odparit na cca 40ml, nechat vysrazet na2so4 pak jeste pridat 2,05g NaBr a doredit na 40ml 2020.04.21 0.2mol ZnSO4.7H2O a 0.4mol NaBr , vyvarit dekantovat, pridat 4.11g nabr ==== Navody, postupy ==== === Elektrolyt === == Priprava bromidu zinecnateho == 20200126_How To Make Zinc Bromide For A Battery Electrolyte.mp4 * 1mol ZnSO4 * 2 moly NaBr RMS dela 1M roztok ZnSO4 a 2M roztok NaBr smicha a odpari 3/4 vody (z 200ml na 50ml) normalne to dela na 1/8.. tedy skonci zhruba s 4M roztokem NaSO4 max 2M roztok ZnBr cca 10M max na udrzeni bromu v baterce: Tetrabutylammonium bromide https://www.sigmaaldrich.com/catalog/product/sial/426288?lang=en®ion=CZ https://www.sciencedirect.com/science/article/pii/S2589004220305356 === vyroba === zelena houba 0.19g houby pobere 6.75g vody elektrolyt: 6mm carbon felt soaked in 0.25M TBAB 3.5M znbr2 + 1M NaBr and 2% by weight polyethylene glycol kdyz pouzivas tbab, jinak to bude jiny.. to je v nejakym jinym videu ve videu 20201020_Building Big Batteries For DIY Off Grid.mkv je 2.5M roztok ZnBr2 a 0.5M NaBr v tom videu okolo 17:53 taky mluvi o dispernim oxidu kremicitym, aby se z elektrolytu udelal gel TBAB je jedna z: https://en.wikipedia.org/wiki/Quaternary_ammonium_cation === Kapacita === 20201020_Building Big Batteries For DIY Off Grid.mkv to popsuje okolo 9:00 === Konstrukce === == Kraicka s vyvodama nahore == krabicka vevnitr 20x32 elektrody 20x65 a 20x 50 ==== Teorie ==== https://pubs.rsc.org/en/content/articlehtml/2016/ee/c6ee02782b https://iopscience.iop.org/article/10.1149/2.0151816jes/pdf https://www.researchgate.net/publication/268113564_New_Bromine_Complexing_Agents_for_Bromide_Based_Batteries ==== Nabijeni ==== tady se mluvi o nabijeni napetim 1.5V https://www.sandia.gov/ess-ssl/publications/SAND2000-0893.pdf 20201020_Building Big Batteries For DIY Off Grid.mkv okolo 13:00 rika: RMS mluvi o nabijeni proudem na plochu elektrody v jednom videu o nab cca 20-50mA/cm2 povrchu elektrod. podle poklesu proudu/napet by se se melo poznat nabiti, pri prebijeni se muze tvori H2 a O2. a o15-30mA/cm2 povrchu elektrody ve videu 20191125_Robert Murray-Smith_The Zinc Bromide Battery - How To Make It.mp4 https://pubs.rsc.org/en/content/articlelanding/2017/ee/c6ee02782b#!divAbstract ==== Material ==== https://www.drhoffmann.cz/oxid-kremicity-dispersni-100g-id9.html https://www.p-lab.cz/tetrabutylamonium-bromid https://www.propec.cz/zaruvzdorne-cihly https://www.agrozet.cz/e-shop/grafitovy-prasek-05-kg-d86406.html https://www.verkon.cz/laboratorni-chemikalie-lachner/bromid-sodny/?highlight=bromid https://www.verkon.cz/laboratorni-chemikalie-lachner/siran-zinecnaty-heptahydrat/?highlight=siran+zinecnaty https://www.verkon.cz/kadinka-nizka-s-vylevkou-simax/?highlight=kadinka https://www.verkon.cz/sklenene-michaci-tycinky/ https://www.verkon.cz/sklenena-magneticka-michadla/ https://www.verkon.cz/plastove-stricky-a-rozprasovace/ https://www.verkon.cz/pipeta-dle-pasteura-nesterilni-ldpe/ https://www.verkon.cz/laboratorni-chemikalie-lachner/mocovina-/ https://www.verkon.cz/laboratorni-chemikalie-lachner/uhlicitan-draselny-bezvody/ https://www.verkon.cz/laboratorni-chemikalie-lachner/voda-destilovana/ https://www.sigmaaldrich.com/catalog/product/sial/426288?lang=en®ion=CZ https://www.verkon.cz/laboratorni-chemikalie-lachner/siran-sodny-bezvody/ https://www.verkon.cz/kleste-na-kadinky-s-celistmi-potazenymi-keramikou/ https://www.verkon.cz/miska-treci-drsna-porcelanova/ https://www.verkon.cz/laboratorni-chemikalie-lachner/ethylenglykol/ https://www.verkon.cz/lahve-pp/ https://www.verkon.cz/lahev-uzkohrdla-hdpe/ https://www.krmivahulin.cz/p/glycerol-cisty-bezvody-glycerin-99-5#2892 aranzovaci houba https://www.sigmaaldrich.com/catalog/product/sial/426288?lang=en®ion=CZ http://www.stawebniny.com/hpi-folie-junifol-hdpe-15mm/d-103692/ http://www.stawebniny.com/hpi-folie-junifol-hdpe-2mm/d-103688/ https://www.bedimex.eu/pevna-deska-na-vyztuhy-cerna-2000x1000x1-5-mm-ean8591838044479-skup286.php https://www.caplinq.com/electrically-conductive-plastic-film.html https://www.ebay.com/itm/Tetrabutyl-ammonium-bromide-TBAB-100-g-99/184543998522 https://www.onpira.cz/zbozi/site-proti-hmyzu-hlinik--nerez--pozink/ https://www.obchodprodilnu.cz/tkanina-kovova-csn-17240-nerez-14301-format-0496.html https://www.habeo.cz/akvaristika/aqua-nova-aktivni-uhli/ https://secure.workingink.co.uk/working-ink-shop/ https://www.esdshop.cz/catalog/product/562-ESD-vodiva-folie-rukav-100-mm-x-500-m/ https://www.caplinq.com/linqstat-xvcf-200-ohms-sq-3.5-mil-high-level-electrically-conductive-plastic-sheeting-xvcf-3.5s200.html?filter=5044,5042 https://www.filament-pm.cz/ppjet-polypropylen-natur-1-75-mm-0-5-kg/p98 https://www.mercishop.cz/product/253121086602-bromid-sodny-c-500-g