Materials Literature
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The dye-sensitized solar cell (DSSC) plays a leading role in third generation photovoltaic devices. Platinum nanoparticles-coated conducting glass has been widely used as the standard counter electrode (CE) for DSSCs. However, the high cost and the rarity of platinum limits its practical application in DSSCs. This has…
The demand of high energy storage for large grid application and transportation intensifies the interest for new materials with high energy density, long life span and low cost. Lithium sulfur (Li-S) battery is expected to promote the state-of-art battery technologies and upgrade the capability that current batteries…
Hierarchically structured polyaniline decorated reduced graphene oxide/SiO2 (PANI/RGO-a-SiO2) nanocomposite has been prepared using in situ polymerization. The XPS and XRD analysis demonstrate that the each synthetic step was successfully accomplished, and SEM and TEM clearly show that urchin-like structure PANI/RGO-a…
Market power - the ability of a firm to raise price above the competitive level for a sustained period - is a part of the legal framework in antitrust contexts. Monopoly power (or market dominance) is an element of the offense of abuse of dominance under Article 3-2 of the Monopoly Regulation and Fair Trade Act (the “…
Electrochemical double layer capacitors (EDLC), most commonly referred to as “supercapacitors”, have gained increasing scientific and commercial interest in recent years. Purely electrostatic charge storage processes allow charge- and discharge cycles in the second-time scale, exhibiting a theoretical capacitance in t…
우리나라에서는 5개 발전사의 10개 화력발전소에서 2013년 기준으로 약 891만 톤의 석탄재가 발생하고 있다. 석탄재는 약 82%가 비산재, 18%는 바닥재로 구성되어있으며, 이 중 비산재는 대부분 레미콘혼화제 및 시멘트 대체원료 등으로 재활용되고 있으나 바닥재는 발전소 내의 매립시설에 보관되어 있는 실정이다. 본 연구에서는 바닥재의 토양으로 재활용 가능성을 평가하고자 하였으며, 석탄재가 함유하고 있는 유해물질을 중심으로 석탄재의 환경영향 가능성 평가를 위해 SP 및 HD석탄재를 각각 단독 또는 토양과 혼합하여 컬럼시험(Percolation test)을 진행하였고…
The crystallization, exothermic, and electrochemical properties of coaltar pitch-based carbon fibers (CFs) with various temperatures were studied. The CFs were prepared from stabilized pitch-based carbon fiber at 500°C, 700°C, 900°C, and 1100°C with 60 min. The surface and structural properties of the ACF were determi…
In this work, the effect of surface treatment method of milled carbon fibers on tribological and mechanical properties of natural rubber compounds was investigated. The milled carbon fiber surfaces were treated with three types of organic solvents (benzene, toluene, and xylene). The compounds containing various surfac…
Carbon fiber reinforced polymer(CFRP) added a little bit of Carbon nanotube(CNT) is rather light but has the strong mechanical properties via reinforced effect between two carbon materials. So It is widely used in automobile body frame to reduce the weight of body which improves the fuel efficiency. Additionally, sinc…
Transition metal oxides have received tremendous interests in supercapacitor materials over the last decade because they can provide higher energy density than conventional carbon materials and better electrochemical stability than polymer materials. They not only store energy like electrostatic carbon materials but a…
In this study, all-solid-state flexible polyaniline/graphene (PANI/graphene) thin film with high electrical conductivity has been synthesized for electrode material for high-performance supercapacitors. The fabricated PANI/graphene film exhibited extremely high electrical conductivity due to the strong π - π interacti…
Organic Photovoltaic Cells have attracted considerable attention in recent years due to their low cost, light-weight, flexiblity and fabrication by solution process. Donor-Acceptor (D-A) copolymers is good choices for polymers of OPVs, because their structural backbone and electronic behavior could be tailored by comb…
Understanding the molecular mechanisms of cancer is the key for transforming cancer medicine. A substantial proportion of human genes show alternative splicing and mis-regulation of Pre-mRNA splicing is seen in several cancers. This book further investigates these matters. The first few chapters provide an update on t…
In this study, the characteristics of silicon nitride (SiN) coated on the carbon fibers by wet-thermal treatments were investigated. The organic precursor, 3-aminopropyltriethoxysilane (APS), was used as a source for ‘Si’ of SiN ceramic coating on the carbon fibers. And the NH3/N2 mix gas was used as source for ‘N’. T…
Conducting polymers represent a class of p-electron conjugated polymers that can be exploited in organic electronics such as organic lightemitting diodes (OLEDs), organic thin-film transistors and organic solar cells. In particular, poly(3,4-ethylenedioxythiophene)(PEDOT) are of great interest in optoelectronic device…
Recycling of ethylene-propylene-diene terpolymer (EPDM) scrap was tried by blending with polypropylene (PP). EPDM scrap powder was prepared by shear pulverization process at high temperature, which may lead to selective chain scission induced by difference in the critical elastic coefficient. On the other hand, EPDM s…
For the first time, the photochromic spiropyran dye [1’-3’-dihydro-1’,3’,3’-trimethyl-6-nitrospiro [2H-1-benzopyran-2,2’-(2H)-indole] (indole) was successfully embedded as a guest molecule into the poly(e-caprolactone) (PCL) host polymer matrix via the electrospinning technique. The resulting PCL/Indole electrospun fi…
Two process models for carbon dioxide (CO2) utilized gas-to-liquids (GTL) process mainly producing methanol were developed by Aspen Plus software. Both models are mainly comprised of a reforming unit, a methanol synthesis unit and a recycle unit. With recycling, it was found that the energy efficiency was successfully…
Organic-inorganic hybrid materials have been a most effective source for advanced materials due to their wide range of applications associated with unique thermal, mechanical, rheological, chemical, and physical properties. Among various inorganic building blocks, polyhedral oligomeric silsesquioxanes (POSS) are a new…
Carbon materials such as one-dimensional carbon nanotube (CNT) and two-dimensional graphene sheet have many excellent properties such as good flexibility, high electric conductivity and mechanical strength, however, have nearly insoluble in aqueous medium. PEDOT:PSS, conducting polymers have been used the widely energ…