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1.发明授权公开(公告)号：US10460850B2
公开(公告)日：2019-10-29
申请号：US15516754
申请日：2015-11-12
发明人： Kyung Tae Kim , Yeong-seong Eom , Young Kuk Kim , Jae-yeol Woo
IPC分类号： H01B1/18 , B22F9/04 , B22F9/24 , C22C47/14 , C22C49/12 , H01L35/22 , H01L35/26 , H01L35/34 , C01B32/198 , B22F1/00 , C22C1/05
摘要： The present invention relates to a thermoelectric composite material and a method for preparing a thermoelectric composite material. Specifically, the invention relates to a thermoelectric composite material in which graphene oxide attached with conductive metal nanoparticles is dispersed in a thermoelectric material and a method for preparing a thermoelectric composite powder comprising the steps of: growing conductive metal nanoparticles on the surface of graphene oxide (step 1); and introducing the graphene oxide attached with the conductive metal nanoparticles prepared in step 1 into a thermoelectric material precursor solution, followed by heat treatment (step 2).
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公开(公告)号：US11657935B2
公开(公告)日：2023-05-23
申请号：US17051979
申请日：2019-07-17
发明人： Youn Kyoung Baek , Jung Goo Lee , Kyung Min Kim , Young Kuk Kim , Min Ji Pyo
CPC分类号： H01F1/11 , B22F1/07 , B22F9/08 , C01G49/06 , B22F2302/256 , C01P2004/01 , C01P2004/64 , C01P2006/42
摘要： The present invention relates to a method for producing a magnetic powder, including: preparing a precursor solution containing an iron precursor and a silica precursor; spraying the precursor solution to form iron/silica precursor droplets; drying the iron/silica precursor droplets to produce iron/silica precursor particles; and heat treating the iron/silica precursor particles to produce an iron oxide/silica composite powder in which iron oxide particles are embedded in a silica matrix. The present invention also relates to a magnetic powder produced by the method. The present invention may provide an iron oxide magnetic powder that does not use rare earth elements and a method for producing the same.
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