, Masel, R.I.
, Moghaddam, S.
, Pengwang, E.
, Shannon, M.A.
, UIUC, US
We report, for the first time, development of a fully integrated millimeter-scale (331 mm3) fuel cell-based power generator with a completely passive control system. Fabrication of this unique power source was enabled through development of [...]
Highly ordered titania nanotube (TNT) arrays were fabricated by anodic oxidation of titanium foil followed by CO annealing. The lithium-ion intercalation capacities of the as-prepared sample was studied and found to be improved a lot [...]
The amphiphilic Ru-bipyridine complex, NaRu(4-carboxylic acid-4’-carboxylate-2, 2’bipyridine)(4,4’-dinonyl-2,2’bipyridine)(NCS)2 can be used as a surfactant for solubilization of single walled carbon nanotubes (SWNTs) in acetonitrile-t-butanol mixture. The Ru-complex represents a redox functionality of 3.5 V vs. Li/Li+, [...]
Morphology of electroactive materials in electrodes affects their electrochemical performance and capacity of energy storage devices. New architectures (3D) for electrodes and cells will overcome the traditional electrodes’ problems. However, preparation of 3D electrodes needs [...]
Allard Jr., L.F.
, Huang, D.
, Koh, S.
, Liu, Z.
, More, K.L.
, Strasser, P.
, Yu, C.
, University of Houston, US
We reported here that the enhanced electrocatalytic oxygen reduction activity of PtCu3/C catalysts was stabilized using Au galvanic displacement of Cu in PtCu3/C. The results showed that mass activities decreased by 24 and 29%, and [...]
Clean burning natural gas begins with producing the gas in an environmentally friendly manner. Industry has made great strides in protecting the environment while increasing natural gas production in the U.S. Producers, however, still face [...]
Nanofluids refer to new kinds of engineering materials which are prepared by dispersing fine nanometer sized particles (smaller than 100 nm) in a base fluid. It has been recognized in the past decade that nanofluids [...]
, Eisaman, M.D.
, Larner, D.
, Littau, K.
, Schwartz, D.E.
, Zesch, J.
, Palo Alto Research Center, US
In this contribution, we report on the experimental demonstration of a continuously operating modified fuel cell capable of capturing CO2 at atmospheric concentrations with record efficiency. The atmosphere provides O2 and CO2 at the cathode, [...]
, Kim, K-J
, Luo, N.
, Miley, G.H.
, Yang, X.
, University of Illinois, US
As part of the development of a portable fuel cell using direct sodium Borohydride fuel, deposition methods of the catalysis on the diffusion layer have been studied. In earlier studies catalyst deposition onto a porous [...]
Membraneless micro fuel cells shown in Fig. 1 have eliminated some technical issues related to membrane-based fuel cells such as dry-out at anode and flooding at cathode. However, performance of membraneless micro fuel cell using [...]
We report development of the first viable silicon-based proton exchange membrane (PEM). This was achieved through self-assembly of 3-mercaptopropyl-trimethoxysilane (MPTMS) molecules inside extremely high aspect ratio torturous silicon nanopores. This development can greatly benefit the [...]
It is well known, that the electrical energy storage in the large scale is basically difficult process. Such a process is marked by the energy losses, as the conversion of electrical energy into another form, [...]
Renewable energy sources RES (solar, wind resources, biomass, geothermal, etc.) that use indigenous resources and that supply16% of the total world energy demand, have the potential to provide energy services with zero or almost zero [...]
Effect of channel-to-rib width ratio of flowfield plates on micro proton exchange membrane fuel cell stacks performance test (VI/PI) was studied experimentally in the present study (see Fig. 1). The channel-to-rib width ratio was varied [...]
In this study, the engine performance, power, efficiency, specific fuel consumption and variation of pressure in the cylinder have been investigated in case of the use of hydrogen fuels in internal combustion engines, and compared [...]
, Cantrell, T.
, Corti, G.
, McIlroy, D.N.
, Norton, M.G.
, Prakash, T.
, Washington State University, US
Since catalytic performance is a limiting factor for many essential elements of the hydrogen economy, the need for improved catalysts is great. One-dimensional (1D) nanomaterials are ideal catalysts because of their large surface area to [...]
Small distributed hydrogen generating stations have been proposed. However, they are generally assumed to use water electrolysis units or various gas reforming processes. In this study we examine an alternate approach using the exhaust plasma [...]
Hydrogen storage for transportation applications remains a challenge. Current approaches are still short of published goals, in particular in being able to operate at acceptable temperatures. Physisorption, or non-dissociative approaches, where the hydrogen is stored [...]
, Levi, Y.
, McColskey, J.D.
, Nanninga, N.E.
, Siewert, T.A.
, Slifka, A.J.
, NIST, US
The National Institute of Standards and Technology (NIST) is establishing a new national test facility in Boulder, Colorado to evaluate the mechanical properties of materials proposed to store, transport, and distribute hydrogen fuels. Many of [...]
Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2009: Biofuels, Renewable Energy, Coatings, Fluidics and Compact Modeling
Published: May 3, 2009
Industry sector: Energy & Sustainability
Topics: Energy Storage