Perekani ternary thermoelectric bismuth telluride P-mtundu wa Bi0.5Sb1.5Te3 ndi N-mtundu wa Bi2Te2.7Se0.3
Chiyambi chachidule
Kachitidwe
| Kanthu | bismuth telluride, bi2te3 |
| N mtundu | |
| P mtundu | Bi0.5Te3.0Sb1.5 |
| Kufotokozera | Block ingot kapena ufa |
| ZT | 1.15 |
| Kulongedza | thumba la vacumm |
| Kugwiritsa ntchito | firiji, kuzizira, thermo, kufufuza kwasayansi |
| Mtundu | Xinglu |
Kufotokozera
| Specification | P-Mtundu | N-Mtundu | Zodziwika |
| Lembani nambala | Bite- P-2 | Bite- N-2 | |
| Diameter (mm) | 31 ±2 | 31 ±2 | |
| Utali (mm) | 250 ± 30 | 250 ± 30 | |
| Kuchulukana (g/cm3) | 6.8 | 7.8 | |
| Magetsi conductivity | 2000-6000 | 2000-6000 | 300K |
| Seebeck Coefficient α(μ UK-1) | ≥140 | ≥140 | 300K |
| Thermal conductivity k(Wm-1 K) | 2.0-2.5 | 2.0-2.5 | 300K |
| Powder Factor P (WmK-2) | ≥0.005 | ≥0.005 | 300K |
| Mtengo wapatali wa magawo ZT | ≥0.7 | ≥0.7 | 300K |
| Mtundu | Xinglu | ||
Kugwiritsa ntchito
Bismuth telluride (Bi2Te3)ndi thermoelectric material yomwe imadziwika kuti imatha kusintha mphamvu yotentha kukhala mphamvu yamagetsi. Amapangidwa makamaka ndi mitundu iwiri: P-mtunduBi0.5Sb1.5Te3ndi N-mtundu wa Bi2Te2.7Se0.3. P-mtundu wa Bi0.5Sb1.5Te3 umapangidwa makamaka ndi bismuth, antimony ndi tellurium, pamene N-mtundu wa Bi2Te2.7Se0.3 uli ndi bismuth, tellurium ndi selenium. Mitundu yonse iwiri ya bismuth telluride imapezeka mu piritsi kapena mawonekedwe a ufa.
Mapulogalamu abismuth tellurideP-mtundu Bi0.5Sb1.5Te3 ndi N-mtundu Bi2Te2.7Se0.3 makamaka m'munda wa thermoelectric mphamvu kutembenuka. Zidazi nthawi zambiri zimagwiritsidwa ntchito pazida zamagetsi zomwe zimapangidwira kuti zigwiritse ntchito kusiyana kwa kutentha kuti apange magetsi. P-mtundu wa Bi0.5Sb1.5Te3 ndi N-mtundu wa Bi2Te2.7Se0.3 akhoza kuphatikizidwa mu zipangizo monga majenereta a thermoelectric, machitidwe obwezeretsa kutentha kwa zinyalala zamagalimoto, ndi machitidwe opangira magetsi onyamula. Kuchita kwawo kwakukulu komanso kuchita bwino kumawapangitsa kukhala oyenera kugwiritsa ntchito mitundu yosiyanasiyana yokolola mphamvu.
Zida zonse ziwiri za P-type Bi0.5Sb1.5Te3 ndi N-type Bi2Te2.7Se0.3 bismuth telluride zili ndi mphamvu zabwino kwambiri za thermoelectric ndipo ndizoyenera kwambiri kuziziritsa pamagetsi. Zidazi zitha kugwiritsidwa ntchito popanga zoziziritsa kukhosi za thermoelectric, zomwe zimadziwikanso kuti Peltier coolers, zomwe zimachotsa kutentha kuzinthu zamagetsi ndikusunga kutentha koyenera. Kuphatikiza apo,Bismuth TellurideZipangizo zamtundu wa P- ndi N zimagwiritsidwa ntchito poyang'anira kutentha pazida zamankhwala, ukadaulo wazamlengalenga ndi zamagetsi zamagetsi.
Powombetsa mkota,bismuth tellurideP-mtundu wa Bi0.5Sb1.5Te3 ndi N-mtundu wa Bi2Te2.7Se0.3 ndi zida zamtengo wapatali zomwe zimagwiritsidwa ntchito ponseponse pazakusintha mphamvu ndi kuziziritsa pakompyuta. Makhalidwe awo apadera a thermoelectric amawapangitsa kukhala gawo lofunikira pazida ndi machitidwe osiyanasiyana, zomwe zimathandizira kupititsa patsogolo mphamvu zamagetsi komanso matekinoloje okhazikika. Pamene kufunika kwa mphamvu zongowonjezwdwa kukukulirakulira, kugwiritsa ntchitobismuth telluridezipangizo zikuyembekezeka kuwonjezeka, kuyendetsa kafukufuku ndi chitukuko m'derali.
