3粉末。在溶膠配制過(guò)程，對(duì)Sr:V摩爾比進(jìn)行精確調(diào)控，再通過(guò)對(duì)凝膠熱分解行為的表征，確定其煅燒溫度和除去殘余碳，從而獲得前驅(qū)體粉末，再將其在H2中還原以獲得最終產(chǎn)物。研究了煅燒溫度、Sr:V摩爾比對(duì)產(chǎn)物形貌、結(jié)構(gòu)和組成的影響，并采用標(biāo)準(zhǔn)直流四探針技術(shù)對(duì)樣品的電導(dǎo)率進(jìn)行測(cè)試。結(jié)果表明，當(dāng)Sr:V摩爾比為1:1.06，煅燒溫度500 ℃，再在850 ℃氫氣還原，可以制備沒(méi)有殘余碳或釩的氧化物雜質(zhì)的單相SrVO3粉末。SrVO3粉末的電導(dǎo)率達(dá)到714.3 S/cm，比石墨粉末的電導(dǎo)率（500 S/cm）高。;Conductive SrVO3 powders were synthesized by sol-gel method combined with subsequent heat treatment. The molar ratio of Sr:V was adjusted during the sol process. The thermal behavior of the gel was analyzed to figure out the calcination temperature in order to get the precursors without residual carbon, and then the gel was reduced in H2 to obtain the final products. The influence of temperature and molar ratio of Sr:V on the morphologies, structures and compositions was researched. The conductivity of the samples was tested by standard dc four-probe technology. The results show that when the molar ratio of Sr:V=1:1.06, the calcination temperature is 500 °C and reduction temperature is 850 °C in H2, the SrVO3 powers without the impurities of residual carbon or vanadium oxides can be obtained. The electrical conductivity of SrVO3 powders reaches 714.3 S/cm, while that of graphite powders is about 500 S/cm."/>
3粉末;溶膠凝膠法;電導(dǎo)率;熱行為;雜質(zhì);SrVO3 powders;sol-gel method;electrical conductivity;thermal behaviour;impurities"/>