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所属行业:化学原料和化学制品制造业

  • 21781.全球工业铅酸电池市场报告(2015-2019年)

    [化学原料和化学制品制造业,计算机、通信和其他电子设备制造业] [2015-09-06]

    Lead-acid is the dominant battery technology in overall industrial applications. Although new technologies have emerged, the demand for lead-acid batteries in industrial applications will continue due to their low cost and long life cycle. These batteries are in high demand from various sectors, primarily from telecom, data centers, power utilities, forklift trucks, oil and gas, and mining. The telecom sector has seen tremendous growth in the last decade and requires assured power supply on a continuous basis. Globally, cellular systems are replacing wired telecom infrastructures; the total number of base stations has grown drastically. Diesel generators power the majority of these stations.
    关键词:铅酸;电池技术;工业应用;铅酸电池;工业的需求;应用程序;低成本;生命周期
  • 21782.全球汽车铅酸电池市场报告(2015-2019年)

    [计算机、通信和其他电子设备制造业,化学原料和化学制品制造业,汽车制造业] [2015-09-06]

    Lead-acid is a significant battery chemistry in energy storage technology. Lead-acid is used in automotive, stationary, and deep-cycle batteries. These batteries have held a strong position in the overall battery market for over 100 years. Lead-acid batteries have been dominating the automotive market — they are the only available battery technology for SLI applications in automotive, due to their excellent cold cranking performance. Although new technologies such as nickel-metal hydride (Ni-MH) and the lithium-ion (Li-ion) battery have emerged, lead-acid batteries will maintain their dominance throughout the forecast period due to their low cost and long life cycle.
    关键词:铅酸;储能技术;电池化学物质;深循环电池;冷启动性能;镍氢电池;锂离子
  • 21783.作为高效燃料电池的不含金属的氧还原催化剂和氧石墨烯

    [化学原料和化学制品制造业,电力、热力、燃气及水生产和供应业] [2015-09-03]

    Oxygen reduction reaction (ORR) is important in fuel cells. Although platinum nanoparticles can catalyse the ORR in an efficient way, the high cost of the platinum catalysts, together with its limited reserves in nature, has been shown to be the major 'showstopper' to mass market fuel cells for commercial applications. Following our earlier work on metal-free, nitrogen- doped carbon nanotubes (Gong, K.; Du, F.; Xia, Z.; Durstock, M.; Dai, L. Science 2009, 323, 760) and nitrogen-doped graphene sheets (Qu, L.; Liu, Y.; Baek, J.-B.; Dai, L. ACS Nano 2010, 4, 1321) as highly efficient ORR, we have developed in this project new metal-free and oxygen-free graphene materials by either edge-functionalization or ball milling as efficient electrocatalysts for ORR in fuel cells and other applications, including dye-sensitized solar cells (DSSCs).
    关键词:催化剂;燃料电池;石墨烯;纳米技术
  • 21784.能源部2013年年度报告:新型磷腈类化合物以增强安全性和电池化学的高压应用的稳定性(INL)

    [化学原料和化学制品制造业,电气机械和器材制造业] [2015-09-02]

    Electrolytes play a central role in performance and aging in most electrochemical systems. As automotive and grid applications place a higher reliance on electrochemical stored energy, it becomes more urgent to have electrolyte components that enable optimal battery performance while promoting battery safety and longevity. Safety remains a foremost concern for widespread utilization of Li-ion technology in electric-drive vehicles, especially as the focus turns to higher voltage systems (5V). This work capitalizes on the long established INL expertise regarding phosphazene chemistry, aimed at battery-viable compounds for electrolytes and electrodes that are highly tolerant to abusive conditions. This report showcases our 2013 work for the DOE applied battery research (ABR) program, wherein testing results are summarized for INL electrolytes and alternative anode materials.
    关键词:衰老;阳极;电化学;电解质;储能
  • 21785.DWPF还原剂替代模拟,乙醇酸和消泡剂747的有机物性质

    [化学原料和化学制品制造业] [2015-09-02]

    The present study examines the fate of glycolic acid and other organics added in the Chemical Processing Cell (CPC) of the Defense Waste Processing Facility (DWPF) as part of the glycolic alternate flowsheet. Adoption of this flowsheet is expected to provide certain benefits in terms of a reduction in the processing time, a decrease in hydrogen generation, simplification of chemical storage and handling issues, and an improvement in the processing characteristics of the waste stream including an increase in the amount of nitrate allowed in the CPC process. Understanding the fate of organics in this flowsheet is imperative because tank farm waste processed in the CPC is eventually immobilized by vitrification; thus, the type and amount of organics present in the melter feed may affect optimal melt processing and the quality of the final glass product as well as alter flammability calculations on the DWPF melter off gas. To evaluate the fate of the organic compounds added as the part of the glycolic flowsheet, mainly glycolic acid and antifoam 747, samples of simulated waste that was processed using the DWPF CPC protocol for tank farm sludge feed were generated and analyzed for organic compounds using a variety of analytical techniques at the Savannah River National Laboratory (SRNL). These techniques included Ion Chromatography (IC), Gas Chromatography-Mass Spectrometry (GC-MS), Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES), and Nuclear Magnetic Resonance (NMR) Spectroscopy.
    关键词:放射性废物处理;葡萄糖酸;氢;熔点;硝酸盐
  • 21786.项目最终报告:电解质溶液中的掺杂氧化亚铜:掺杂团,原子结构和电学性质

    [电气机械和器材制造业,化学原料和化学制品制造业] [2015-09-02]

    We have pursued a number of research activities between April 2010 and April 2011: A detailed study on n-type doping in Cu2O by Br; An analysis of natural resource limitations to terawatt-scale solar cells; Attempt to achieve a 1.4-eV direct band gap in Ni sulfides (NiSx); First-principles studies of doping in Cu2O and electronic structures of NiSx. The following is a more detailed description of these activities.
    关键词:太阳能电池;掺杂材料;原子结构;铜氧化物
  • 21787.氧化能力,酸度,碱度的极端条件

    [化学原料和化学制品制造业] [2015-09-02]

    Professor Michl and collaborators prepared several icosahedral monocarba-closo-dodecaborate anions carrying halogen and trifluoromethyl substituents and investigated their oxidation by chemical and electrochemical means and by quantum chemical calculations. These anions are of interest for fuel cell and high-voltage battery applications, because they are unusually weakly nucleophilic and extremely difficult to oxidize, with reversible redox potentials calculated up to 5 V above ferrocene/ferricenium. In liquid sulfur dioxide, the standard solvent for electrochemical oxidation at highly positive potentials, all oxidations were irreversible. In 1,1,1,3,3,3- hexafluoroisopropan-2-ol, the undecafluorinated anion is oxidized reversibly at 2.43 V above ferrocene/ferricenium (calculated 2.40 V) but the radical is too unstable for isolation. Other undecahalogenated anions are oxidized irreversibly. A promising new solvent that dissolves supporting electrolytes and resists oxidation is 1,1,1,3,3-pentafluorobutane. In two cases, the oxidized neutral radicals were sufficiently stable in perfluorohexane solution for spectroscopic characterization, but only up to -40 degrees C. At temperatures closer to ambient, this solvent was oxidized.
    关键词:氟化;碘化;氧化;盐;酸;阴离子
  • 21788.使用纤维素和生物油进行酯交换和甲醇合成的耦合过程的可行性研究—最终报告(20100701-20101231)

    [化学原料和化学制品制造业,电气机械和器材制造业] [2015-09-02]

    Petroleum-based liquid hydrocarbons is exclusively major energy source in the transportation sector. Thus, it is the major CO(sub 2) source which is the associated with greenhouse effect. In the United States alone, petroleum consumption in the transportation sector approaches 13.8 million barrels per day (Mbbl/d). It is corresponding to a release of 0.53 gigatons of carbon per year (GtC/yr), which accounts for approximate 7.6 % of the current global release of CO(sub 2) from all of the fossil fuel usage (7 GtC/yr). For the long term, the conventional petroleum production is predicted to peak in as little as the next 10 years to as high as the next 50 years. Negative environmental consequences, the frequently roaring petroleum prices, increasing petroleum utilization and concerns about competitive supplies of petroleum have driven dramatic interest in producing alternative transportation fuels, such as electricity-based, hydrogen-based and bio-based transportation alternative fuels. Use of either of electricity-based or hydrogen-based alternative energy in the transportation sector is currently laden with technical and economical challenges. The current energy density of commercial batteries is 175 Wh/kg of battery. At a storage pressure of 680 atm, the lower heating value (LHV) of H(sub 2) is 1.32 kWh/liter.
    关键词:电池;温室效应;碳氢化合物;可再生能源
  • 21789.安装在室外机柜的氢系统的安全性—氢气安全专家组

    [电气机械和器材制造业,化学原料和化学制品制造业] [2015-09-02]

    The Hydrogen Safety Panel brings a broad cross-section of expertise from the industrial, government, and academic sectors to help advise the U.S. Department of Energy's (DOE) Fuel Cell Technologies Office through its work in hydrogen safety, codes, and standards. The Panels initiatives in reviewing safety plans, conducting safety evaluations, identifying safety-related technical data gaps, and supporting safety knowledge tools and databases cover the gamut from research and development to demonstration and deployment. The Panels recent work has focused on the safe deployment of hydrogen and fuel cell systems in support of DOE efforts to accelerate fuel cell commercialization in early market applications: vehicle refueling, material handling equipment, backup power for warehouses and telecommunication sites, and portable power devices. This paper resulted from observations and considerations stemming from the Panels work on early market applications. This paper focuses on hydrogen system components that are installed in outdoor enclosures. These enclosures might alternatively be called cabinets, but for simplicity, they are all referred to as enclosures in this paper. These enclosures can provide a space where a flammable mixture of hydrogen and air might accumulate, creating the potential for a fire or explosion should an ignition occur. If the enclosure is large enough for a person to enter, and ventilation is inadequate, the hydrogen concentration could be high enough to asphyxiate a person who entered the space. Manufacturers, users, and government authorities rely on requirements described in codes to guide safe design and installation of such systems. Except for small enclosures used for hydrogen gas cylinders (gas cabinets), fuel cell power systems, and the enclosures that most people would describe as buildings, there are no hydrogen safety requirements for these enclosures, leaving gaps that must be addressed.
    关键词:氢;安全;横截面;部署;电子器件
  • 21790.辐射诱导和原子转移自由基聚合相结合的方法制备新型聚合物电解质膜

    [电气机械和器材制造业,化学原料和化学制品制造业] [2015-09-02]

    The most vital components in polymer electrolyte membrane (PEM) fuel cells are PEM materials. In the case of Nafion (DuPont Co.), the most widely used PEMs, the proton conductivity markedly decreases at high temperature ( > 80 ℃) and low relative humidity (RH) ( < 30%). This drawback limits the use of Nafion in practical and commercial applications. Our research group is developing the Nafion-alternative PEMs by using a radiation-induced grafting method1'. In these PEMs, the graft chain structures should significantly affect the proton conduction properties. Then, in this study, by combination of radiation grafting and atom transfer radical polymerization (ATRP), we designed the novel PEMs possessing both the hydrophobic and hydrophilic graft chains.
    关键词:燃料电池;辐射诱导;电解质膜
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