【Pfupiso】:
Lithium bhatiri vanogadzira lithium mabhatiri akamutsa kufarira kukuru uye kutarisisa kune yavo yakakwira chaiyo simba, hupenyu hurefu hwekutenderera, kureba kwekushanda tembiricha uye humwe hunhu. Chinonyanya kukwezva ndechekuti avhareji mutengo wemabhatiri painotenderera haina kukwirira. Uyezve, kune kuderera kwemaitiro. Vagadziri velithium bhatiri vanotevera vanounza zvakanakira uye hunhu hwemabhatiri e lithium zvakadzama.
Vagadziri veLithium bhatiri vanotsanangura muchidimbu maitiro uye zvakanakira zvelithium mabhatiri

Lithium bhatiri vanogadzira lithium mabhatiri akamutsa kufarira kukuru uye kutarisisa kune yavo yakakwira chaiyo simba, hupenyu hurefu hwekutenderera, kureba kwekushanda tembiricha uye humwe hunhu. Chinonyanya kukwezva ndechekuti avhareji mutengo wemabhatiri painotenderera haina kukwirira. Uyezve, kune kuderera kwemaitiro. Vagadziri velithium bhatiri vanotevera vanounza zvakanakira uye hunhu hwemabhatiri e lithium zvakadzama.

Lithium bhatiri vagadziri

Kuenzaniswa nemamwe mabhatiri echipiri ane simba repamusoro (akadai seNi-Cd mabhatiri, Ni-MH mabhatiri, nezvimwewo), vagadziri vebhatiri velithium-ion vane zvakakosha zvekushanda, kunyanya mune zvinotevera zvinhu.

High kushanda voltage uye yakakura chaiyo kugona

Kushandisa carbonaceous lithium intercalation compounds senge graphite kana petroleum coke pachinzvimbo chelithium sezvo negative electrode ichaita kuti bhatiri ridonhe. Nekudaro, nekuda kweiyo yakaderera lithium yekuisa kugona, iyo voltage kurasikirwa inogona kuderedzwa kusvika yakaderera muganho. Panguva imwecheteyo, kusarudza iyo yakakodzera lithium intercalation compound seye bhatiri yakanaka electrode uye kusarudza yakakodzera electrolyte system (inotaridza hwindo re electrochemical yerithium bhatiri) kunogona kuita kuti lithium bhatiri rive nemhepo yekushanda yakakwira (-4V), inova. yakakwira zvakanyanya kupfuura iyo yeaqueous system bhatiri. .

Kunyangwe kutsiviwa kwelithium nekabhoni zvinhu kuchaderedza huwandu hwezvinhu, kutaura zvazviri, kuitira kuti bhatiri rive nehumwe hupenyu hwekutenderera mu lithiamu yechipiri bhatiri, iyo negative electrode lithium inowanzopfuura katatu yakawandisa. saka kunaka kwerithium bhatiri mu lithium bhatiri mugadziri Kudzikira chaiko mune chaiyo hukuru hakusi hombe, uye vhoriyamu yakananga chiyero hachidzike.

High simba density, low self-discharge rate

Iyo yakakwirira yekushanda voltage uye volumetric chaiyo simba inotaridza iyo yakakwirira simba density yeyechipiri lithium bhatiri. Kuenzaniswa nemabhatiri eNi-Cd anoshandiswa zvakanyanya iye zvino uye Ni-MH mabhatiri, mabhatiri echipiri e-lithium ane simba repamusoro uye achine mukana mukuru wekusimudzira.

Vagadziri veLithium bhatiri vanoshandisa isiri-aqueous electrolyte masisitimu emabhatiri eti lithium, uye lithium-yakasanganiswa kabhoni zvinhu zvine thermodynamically kusagadzikana mune isiri-aqueous electrolyte masisitimu. Panguva yekuchaja nekuburitsa, kudzikiswa kweelectrolyte kuchaita firimu rakasimba re electrolyte intermediate (SEI) pamusoro pekabhoni negative electrode, zvichiita kuti lithium ions ipfuure asi isingatenderi maerekitironi kupfuura, uye kugadzira electrode inoshanda zvinhu zve. siyana chaja nyika mune Zvine mwero yakagadzikana mamiriro, saka ine yakaderera yekuzviburitsa mwero.

Kuita kwakanaka kwekuchengetedza, hupenyu hurefu hwekutenderera

Chikonzero nei vagadziri ve lithium bhatiri vachishandisa lithium seanode bhatiri haina kuchengetedzeka nekuti kuwanda kuchaja uye kubuda kunoshandura chimiro cheiyo yakanaka electrode ye lithium ion bhatiri, kugadzira porous dendrites. Kana tembiricha ichiwedzerwa, ichava nechisimba exothermic reaction ne electrolyte, uye maDendrites anogona kubaya diaphragm uye kukonzera mukati mapfupi maseketi. Lithium mabhatiri haana dambudziko iri uye akachengeteka zvakanyanya.

Kuti udzivise kuvapo kwe lithium mubhatiri, iyo lithium bhatiri inogadzira inokurudzira kuti voltage idzorerwe kana ichichaja. Nekuda kwekuchengetedza, iyo lithium bhatiri yakashongedzerwa neakawanda kuchengetedza zvishandiso. Panguva yekuchaja uye kuburitsa mabhatiri e lithium, hapana shanduko yechimiro mukuiswa uye deintercalation yelithium ion pane cathode uye anode (lattice ichawedzera uye chibvumirano panguva yekuiswa uye deintercalation process), uye nekuti iyo lithium intercalation compound ndeye. yakanyanya kugadzikana kupfuura lithium, Lithium dendrites haizogadziriswi panguva yekuchaja uye kuburitsa, nokudaro zvakanyanya kuvandudza kuchengetedzwa kwebhatiri, uye hupenyu hwekutenderera hunovandudzwawo zvakanyanya.