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- 주제어 : Cobalt-manganese sulfide (검색결과 4 건)
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유경근,윤치호,박홍기,이광석,강중석,권석기 한국자원공학회 2011 한국자원공학회지 Vol.48 No.6
There have been few studies on mineral processing technologies for recovering valuable minerals from deep-seabed mineral resources and for preventing waste product of the separation process from discharging to ocean, although the mining, lifting and hydrometallurgical processing of the resources have been investigated for development of the deep-seabed resources. In the present article, the studies for beneficiation of manganese nodule, cobalt-rich manganese crust and hydrothermal sulfide deposit using mineral processing technologies such as hydrocyclone, jig, air table and flotation were summarized and further studies were proposed for domestic technology development of deep-seabed resources. 심해저 광물자원을 개발하기 위하여 채광, 양광 그리고 제련기술이 연구되어왔으나 유용광물의 분리 및 해양오염 배출물 억제를 위한 물리적 선별처리기술에 대한 연구는 부족하였다. 이 글에서는 망간단괴, 고코발트망간각 그리고 해저열수황화광상에 대하여 적용된 습식싸이클론 선별, Jig 선별, Air 테이블선별, 부유선별 등의 선별기술개발동향을 정리하고 국내 연구개발방향을 제시하고자 하였다.
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Vijayakumar, Elayappan,Kang, Soon- Hyung,Ahn, Kwang-Soon The Electrochemical Society 2018 Journal of the Electrochemical Society Vol.165 No.5
<P>We have reported the formation of a thin manganese cobalt sulfide (MCS) film on a fluorine-doped SnO2 (FTO) substrate by a facile electrodeposition method for fabricating quantum-dot-sensitized solar cells (QDSSCs). The resulting FTO/MCS films are subsequently employed as counter electrodes (CEs) for cadmium selenide-based QDSSCs. The QDSSC with the FTO/MCS CE provided significantly enhanced short circuit current and fill factor, resulting in very high overall energy conversion efficiency (3.22%) compared to that with the Pt CE (1.08%) under 1-sun illumination. This can be attributed to the significantly enhanced electrocatalytic activity and superior electrical conductivity of the binary transition metal sulfide in addition to the excellent electrical contact at the interface between the electrodeposited MCS film and the FTO. Furthermore, the FTO/MCS exhibit excellent electrochemical stability, unlike the conventional Pt CE. These findings suggest that FTO/MCS should be a promising electrocatalytic electrode material for practical energy conversion applications. (C) 2018 The Electrochemical Society.</P>
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Nguyen, Van Hoa,Shim, Jae-Jin Elsevier 2015 ELECTROCHIMICA ACTA Vol.166 No.-
<P><B>Abstract</B></P> <P>Hierarchical mesoporous NiCo<SUB>2</SUB>S<SUB>4</SUB>@MnO<SUB>2</SUB> core–shell structured arrays on nickel foam were designed and fabricated using a facile hydrothermal method for supercapacitor applications. The electrodes exhibited rapid electron and ion transport, large electroactive surface area, and excellent structural stability owing to the highly conducting nature of the well-defined mesoporous NiCo<SUB>2</SUB>S<SUB>4</SUB> nanowire arrays in combination with the large surface area provided by the ultrathin MnO<SUB>2</SUB> nanosheets and ultralong MnO<SUB>2</SUB> nanowires, as well as to the open framework of the three-dimensional nanoarchitectures. The specific capacitance of the resulting electrode was as high as 17.5Fcm<SUP>−2</SUP> at a very high current density of 100mAcm<SUP>−2</SUP>, highlighting its potential as an efficient electrode for electrochemical capacitors.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Mesoporous NiCo<SUB>2</SUB>S<SUB>4</SUB>@MnO<SUB>2</SUB> arrays have been decorated on Ni foam. </LI> <LI> The electrode exhibits a high specific capacitance of 17.5Fcm<SUP>−2</SUP> at 100mAcm<SUP>−2</SUP>. </LI> <LI> The electrode presents rapid electron transport and large electroactive surface area. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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