Cov kws tshawb fawb tsim qauv qis- nqi Sodium-ion roj teeb nrog cov khoom siv hluav taws xob pheej yig
Jan 26, 2026
Pab neeg tshawb fawb thoob ntiaj teb tau tsim cov khoom siv sodium-ion roj teeb (SIB) khaws cia raws li P2-hom cathode cov ntaub ntawv hu ua Na0.67Mn0.33Ni0.33Fe0.33O2 thiab ib qho anode vam khom rau cov khoom siv carbon nyuaj uas tsim los ntawm paj paj.
Cov txheej txheem kev teeb tsa tau npaj tseg yog npaj rau kev tsim cov nqi qis dua thaum ua kom muaj peev xwm ua kom muaj zog thiab muaj kev ruaj ntseg ib puag ncig, vim tias ob qho khoom siv hluav taws xob tau piav qhia tias yog "tuaj yeem siv tau dav" ua ntej.
"Cov nroj tsuag muaj ntau haiv neeg thiab kev tsim muaj peev xwm yog qhov tseem ceeb cuam tshuam rau kev lag luam ntawm SIBs, vim tias cov nroj tsuag- tau txais cov carbons nyuaj yog ob qho tib si ruaj khov thiab kev lag luam," cov kws tshawb fawb tau piav qhia. "Hard carbon derived los ntawm cov nroj tsuag khaws cov microstructures ntawm cov nroj tsuag cov ntaub so ntswg, yog li pab txhawb kev nkag mus ntawm electrolyte thiab sodium diffusivity.
Cov kws tshawb fawb tau kwv yees cov khoom lag luam lavender thoob ntiaj teb ntawm kwv yees li 1,000-1,500 tons hauv ib xyoos. Txawm li cas los xij, tsuas yog ib feem me me ntawm cov khoom no tuaj yeem siv rau cov khoom siv hluav taws xob, vim tias tsuas yog cov paj residue tsim nyog rau kev hloov pauv mus rau cov roj carbon nyuaj.
Lawv kuj tau sau tseg tias nyuaj carbon anode thiab P2-hom cathode nyob rau hauv tag nrho cov cell muaj tsis txaus sodium reservoirs, ua rau tsis zoo electrochemical kev ua tau zoo. "Kev ua haujlwm tam sim no hais txog qhov sib txawv no los ntawm kev ntsuam xyuas tag nrho -kev ua haujlwm ntawm tes ntawm P2-Na0.67Mn0.9Ni0.1O2 ua ke nrog lavender paj khib nyiab-los ntawm cov roj carbon nyuaj raws li kev sib txawv presodiation," lawv piav ntxiv.
Cov kws tshawb fawb tau siv X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), thiab Raman spectroscopy los ua tus cim SIB system's cathode thiab anodode thiab qauv, thaum lub anode pom cov yam ntxwv dav peaks ntawm amorphous carbon.
SEM thiab TEM tau tshaj tawm, tshwj xeeb, micrometer - loj cathode nplej thiab cov pa roj carbon nkos nyuaj, thiab EDS thiab XPS tau qhia tias cov khoom muaj kev ruaj ntseg zoo. Kev soj ntsuam ntxiv kuj pom tau tias kev sib koom ua ke nickel (Ni) txhim kho cov cathode cov qauv, hluav taws xob, thiab electrochemical kev ua tau zoo.
Tsis tas li ntawd, kev kuaj electrochemical tau nthuav tawm thawj lub peev xwm ntawm 200 mAh / g rau cathode thiab 360 mAh / g rau cov anode nrog lub peev xwm tuav ntawm 42% thiab 67.4% tom qab 100 cycles. Zuag qhia tag nrho, Ni doping tau pom los txhim kho cov cathode conductivity thiab stability, thiab cov anode qhia tau hais tias zoo sodium cia kev ua tau zoo, txhawb zog ib nrab -cell thiab muaj peev xwm puv - cell kev ua tau zoo, raws li cov kws tshawb fawb.
"Txoj kev tshawb fawb no qhia txog lub peev xwm los tsim SIBs nrog cov khoom siv hluav taws xob tsawg- raug nqi thiab ruaj khov," lawv xaus. "Qhov kev ua kom zoo ntawm cov tswv yim presodiation muab lub sijhawm rau kev lag luam siab tshaj thiab scalable SIB technologies."
Lub kaw lus tau piav qhia hauv txoj kev tshawb fawb "Nqis- siv tau sodium- ion roj teeb uas siv Na0.67Mn0.9Ni0.1O2 cathode thiab lavender-paj- khib nyiab- muab cov pa roj carbon zoo nrog kev sib piv ua ntej -soaking mus kom ze," Pab pawg tshawb fawb suav nrog cov kws tshawb fawb los ntawm Turkey's Inonu University, Istanbul Technical University, Malatya Turgut Ozal University, thiab Aksaray University, nrog rau los ntawm Kaus Lim Kauslim Lub Tsev Haujlwm Saib Xyuas Kev Tshawb Fawb thiab Tshuab thiab Pakistan's Quaid-i-Azam University, thiab lwm yam.
