http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정재용,홍종팔,김영국,Jung, Jae-Yong,Hong, Jong-Pal,Kim, Young-Kuk 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.4
Over the last decade, the study of the synthesis of semiconductor colloidal quantum dots has progressed at a tremendous rate. Colloidal quantum dots, which possess unique spectral-luminescent characteristics, are of great interest in the development of novel materials and devices, which are promising for use in various fields. Several studies have been carried out on hot injection synthesis methods. However, these methods have been found to be unsuitable for large-capacity synthesis. Therefore, this review paper introduces synthesis methods other than the hot injection synthesis method, to synthesize quantum dots with excellent optical properties, through continuous synthesis and large capacity synthesis. In addition, examples of the application of synthesized colloid quantum dots in displays, solar cells, and bio industries are provided.
Agglomeration of Li(NixMnyCoz)O2 particles in Couette–Taylor flow reactor
전동협,송정훈,홍종팔,이승훈 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.76 No.-
Couette–Taylorflow reactor is a mixing device that offers wide range of mixing regimes within a singlereactor and operates in continuousflow mode. This reactor is recently used in manufacturing the cathodematerial of lithium ion batteries. Here, we simulate the agglomeration process of Li(NixMnyCoz)O2particles using computationalfluid dynamics. Quadrature method of moments is implemented formodeling of aggregation and breakage in Couette-Taylorflow reactor. We conduct an experiment of thepreparation of Li(NixMnyCoz)O2 precursors, and the experimental data are compared with simulatedresults for the validation of numerical model. The predicted evolutions of mean particle size are wellagreed with experimental data. For the practical application, we investigate the effects of density ratio ofparticle tofluid and initial volume fraction of particles on the particle size. The results show that theparticle diameter increases with increasing of density ratio, but it decreases with increasing of initialvolume fraction of particles. On the other hand, the particle sizes become similar at high rotational speed.