Isu tinoshandisa makuki kuvandudza ruzivo rwako.Nekuramba uchitsvaga saiti ino, unobvuma kushandisa kwedu makuki.Mamwe mashoko.
Sezvo indasitiri yemotokari yemagetsi (EV) ichikura, ndizvo zvinoitawo tsvakiridzo nekuvandudzwa kwemabhatiri emhando yepamusoro e-lithium-ion anovapa simba.Tsvagiridzo nekuwedzera kwekukurumidza kuchaja uye kuburitsa matekinoroji, pamwe nekuwedzera hupenyu hwebhatiri, ndiwo mabasa akakosha mukukura kwayo.
Zvinhu zvakati wandei, senge electrode-electrolyte interface maitiro, lithium ion diffusion, uye electrode porosity, zvinogona kubatsira kukunda matambudziko aya uye kuwana nekukurumidza kuchaja uye hupenyu hwakareba.
Mumakore mashoma apfuura, maviri-dimensional (2D) nanomaterials (mashizha zvimiro zvakakora nanometers) zvakabuda sezvingangoita anode zvinhu zvemabhatiri e lithium-ion.Aya nanosheets ane yakakwira inoshanda saiti density uye yakakwira chikamu chiyero, izvo zvinopa kukurumidza kuchaja uye yakanakisa bhasikoro maitiro.
Kunyanya, maviri-dimensional nanomaterials yakavakirwa pane shanduko simbi diborides (TDM) yakakwezva kutarisisa kwenharaunda yesainzi.Kutenda kune ndege dzehuchi dzemaatomu eboron uye multivalent transition metals, maTMD anoratidza kukurumidza uye kugadzikana kwenguva refu kwe lithium ion kuchengetedza cycles.
Parizvino, boka rekutsvakurudza rinotungamirirwa naProf. Noriyoshi Matsumi weJapan Advanced Institute of Science and Technology (JAIST) uye Prof. Kabir Jasuja weIndia Institute of Technology (IIT) Gandhinagar ari kushanda kuti awedzere kuongorora kukwanisa kwekuchengetedza TMD.
Iri boka rakaita chidzidzo chekutanga chekutyaira pamusoro pekuchengetwa kwetitanium diboride (TiB2) hierarchical nanosheets (THNS) seanode zvinhu zvemabhatiri e lithium-ion.Chikwata ichi chaisanganisira Rajashekar Badam, aimbova JAIST Senior Lecturer, Koichi Higashimin, JAIST Technical Expert, Akash Varma, aimbova mudzidzi weJAIST akapedza kudzidza, uye Dr. Asha Lisa James, mudzidzi weIIT Gandhinagar.
Ruzivo rwekutsvagisa kwavo rwakaburitswa muACS Applied Nano Materials uye ichave iripo online munaGunyana 19, 2022.
TGNS yakawanikwa neoxidation yeTiB2 powder nehydrogen peroxide inoteverwa necentrifugation uye lyophilization yemhinduro.
Chii chinoita kuti basa redu rive pachena ndeye scalability yenzira dzakagadzirwa kugadzira aya TiB2 nanosheets.Kushandura chero nanomaterial kuita tekinoroji inobatika, scalability ndiyo inomisa chinhu.Nzira yedu yekugadzira inongoda kubvongodza uye haidi michina yakaoma.Izvi zvinokonzerwa nekuparara uye kuita recrystallization maitiro eTiB2, inova yakawanikwa netsaona inoita kuti basa iri rive bhiriji rinovimbisa kubva mulabhu kuenda kumunda.
Mushure meizvozvo, vaongorori vakagadzira anode lithium-ion hafu sero vachishandisa THNS seanode inoshanda zvinhu uye vakaongorora cheji yekuchengetedza zvivakwa zveTHNS-based anode.
Vatsvagiri vakadzidza kuti iyo THNS-yakavakirwa anode ine yakakwira yekuburitsa simba re380 mAh/g pane yazvino density ye0.025 A/g chete.Pamusoro pezvo, vakacherekedza simba rekuburitsa re174mAh/g pahupamhi hwazvino hwe1A/g, kuchengetedza kwe89.7%, uye nguva yekuchaja yemaminetsi gumi mushure mekutenderera kwe1000.
Pamusoro pezvo, THNS-based lithium-ion anodes inogona kumira zvakanyanya kukwira, kubva pa15 kusvika 20 A/g, ichipa Ultra-inokurumidza kuchaja mukati memasekondi 9-14.Pamhepo yakakwira, kuchengetedza kwesimba kunodarika 80% mushure me10,000 kutenderera.
Mhedzisiro yechidzidzo ichi inoratidza kuti 2D TiB2 nanosheets vakakodzera kukwikwidza kukurumidza kuchaja hupenyu hwakareba mabhatiri e-lithium-ion.Ivo zvakare vanosimbisa mabhenefiti e nanoscale bulk zvinhu zvakaita seTiB2 yezvivakwa zvakanaka zvinosanganisira yakanakisa kukurumidza kukurumidza kugona, pseudocapacitive charge chengetedzo uye yakanakisa kuita bhasikoro.
Iyi inokurumidza kuchaja tekinoroji inogona kukurumidzira kufarirwa kwemotokari dzemagetsi uye kuderedza zvakanyanya nguva yekumirira yekuchaja dzakasiyana siyana dzemagetsi nhare.Tinovimba kuti mhedzisiro yedu ichakurudzira kumwe kutsvagisa munzvimbo ino, iyo inogona pakupedzisira kuunza nyore kune vashandisi veEV, kuderedza kusvibiswa kwemhepo yemumaguta, uye kuderedza kushushikana kunoenderana nehupenyu hwenharembozha, nekudaro kuwedzera kubereka kwenharaunda yedu.
Chikwata chinotarisira kuti tekinoroji iyi inoshamisa ichashandiswa mumotokari dzemagetsi nezvimwe zvemagetsi munguva pfupi iri kutevera.
Varma, A., nevamwe.(2022) Hierarchical nanosheets yakavakirwa patitanium diboride seanode zvinhu zve lithium-ion mabhatiri.Applied nanomaterials ACS.doi.org/10.1021/acsanm.2c03054.
Mubvunzurudzo iyi paPittcon 2023 muPhiladelphia, PA, takataura naDr. Jeffrey Dick nezvebasa rake mune yakaderera vhoriyamu chemistry uye nanoelectrochemical zvishandiso.
Pano, AZoNano inotaura naDrigent Acoustics nezve mabhenefiti angaunze negraphene kune acoustic uye odhiyo tekinoroji, uye kuti hukama hwekambani negraphene flagship hwakaumba sei kubudirira kwayo.
Mubvunzurudzo iyi, Brian Crawford weKLA anotsanangura zvese zvinofanirwa kuziva nezve nanoindentation, matambudziko aripo anotarisana nemunda, uye kuti angaakunda sei.
Iyo itsva AUTOsample-100 autosampler inoenderana nebenchtop 100 MHz NMR spectrometers.
Iyo Vistec SB3050-2 inzvimbo-ye-iyo-e-beam lithography system ine deformable danda tekinoroji yezvakasiyana siyana zvekushandisa mukutsvaga nekusimudzira, prototyping uye diki-chikero kugadzirwa.