Table of Content

Open Access Review

Using Additives to Control the Decomposition Temperature of Sodium Borohydride

Camille Jubert Tomasso, Anne L. Pham, Tracy M. Mattox, Jeffrey J. Urban
Received: April 20, 2020; Published: May 19, 2020; doi:10.21926/jept.2002009

Abstract: Hydrogen (H2) shows great promise as zero-carbon emission fuel, but there are several challenges to overcome in regards to storage and transportation to make it a more universal energy solution. Gaseous hydrogen requires high pressures and large volume tanks while storage of l [...]

19 157

Open Access Original Research

The Impact of Operating Conditions on the Performance of a CH4 Dry Reforming Membrane Reactor for H2 Production

Akira Nishimura, Satoshi Ohata, Kaito Okukura, Eric Hu
Received: March 25, 2020; Published: May 14, 2020; doi:10.21926/jept.2002008

Abstract: Biogas is a promising resource for the production of H2 since it liberates energy by recycling waste, along with the reduction of CO2. In this paper, the biogas dry reforming membrane reactor is proposed to produce H2 for use in fu [...]

14 142

Open Access Original Research

Hierarchically-Structured Ti/TiO2 Electrode for Hydrogen Evolution Synthesized via 3D Printing and Anodization

Xiang Li, Yuan Xue, Ryan Dehoff, Costas Tsouris, Patricia Taboada-Serrano
Received: April 09, 2020; Published: May 09, 2020; doi:10.21926/jept.2002007

Abstract: Hierarchically-structured, electro-catalysts consisting of a titanium core with controlled macro-porosity and a thin titania surface-layer with controlled nano-porosity were synthesized via combination of additive manufacturing and in-situ anodization. The electrodes were tested for hydrogen evoluti [...]

28 138

Open Access Original Research

Assessment of Stability-Based Characterizations of North Carolina’s Offshore Wind Resource Using a Nested Boundary Layer Method

Megan Schutt , Harvey Seim
Received: April 10, 2020; Published: April 30, 2020; doi:10.21926/jept.2002006

Abstract: SODAR wind profiler measurements from a land-based site within 1000 m of the coastal ocean are compared with predicted wind profiles based on upwind conditions and a stability-based model. The thermally dynamic influence of the Gulf Stream near the site of measurement, Cape Hatteras, has [...]

15 139

Open Access Original Research

Storable Energy Production from Wind over Water

Max F. Platzer, Nesrin Sarigul-Klijn
Received: January 28, 2020; Published: April 29, 2020; doi:10.21926/jept.2002005

Abstract: The current status of a project is described which aims to demonstrate the technical and economic feasibility of converting the vast wind energy available over the globe’s oceans and lakes into storable energy. To this end, autonomous high-performance sailing ships are equipped with hydrokinetic tur [...]

26 178

Open Access Original Research

Autonomous Hydrogen Production for Proton Exchange Membrane Fuel Cells PEMFC

Manuel Legree, Jocelyn Sabatier, Fabrice Mauvy, Abdel salam Awad, Matthieu Faessel, Frédéric Bos, Jean-Louis Bobet
Received: March 04, 2020; Published: April 28, 2020; doi:10.21926/jept.2002004

Abstract: This paper focuses on hydrogen production for green mobility applications (other applications are currently under investigation). Firstly, a brief state of the art of hydrogen generation by hydrolysis with magnesium is shown. The hydrolysis performance of Magnesium powder ball–milled along with diff [...]

25 161

Open Access Original Research

Water Photo-Oxidation Reaction on Clean and Doped Two-Dimensional Graphitic C2N

Tyler Campbell, Sergey Stolbov
Received: February 16, 2020; Published: April 20, 2020; doi:10.21926/jept.2002003

Abstract: In the search for new efficient photo-catalysts for hydrogen production through water splitting, the main attention has been paid to tuning the band gap width and its position with respect to vacuum level. However, actual electro-catalytic activity for the water oxidation reaction on a catalyst surf [...]

31 241

Open Access Original Research

Zero-Emission Geothermal Power Generation: Experimental Study on Carbonate Mineralization through CO2-Andesitic Pyroclastic Rock Interaction at Oku-Aizu Geothermal Plant

Ryosuke Oochi, Kengo Aoyama, Akira Ueda
Received: November 27, 2019; Published: February 12, 2020; doi:10.21926/jept.2001002

Abstract: In order to achieve advancement in zero-emission geothermal power generation for fixing the CO2 in the geothermal fluids to the carbonate minerals after binary power generation and reinjection of the fluid into the reservoir, batch-type experiments and geochemical [...]

70 465

Open Access Opinion

Electricity without Fuel

Nikolai A. Zarkevich
Received: September 30, 2019; Published: January 06, 2020; doi:10.21926/jept.2001001

Abstract: Most power plants produce electricity by converting a mechanical motion into alternating current (AC). Photovoltaic solar panels convert an electromagnetic flux of light into direct current (DC). In general, electric energy can be harvested from a flux in the environment or from a change of the envi [...]

75 526

Open Access Original Research

Experimental Vapor-Pressures and Derived Thermodynamic Properties of Geothermal Fluids from Baden-Baden Geothermal Field (Southeastern Germany)

Misirkhan A. Talybov, Lala A. Azizova, Ilmutdin M. Abdulagatov
Received: September 24, 2019; Published: December 24, 2019; doi:10.21926/jept.1904006

Abstract: Background: In the present study, vapor-pressures of three geothermal fluids from Baden-Baden geothermal field (Kirchenstollen, Friedrichstollen, and Murquelle, southeastern region of Germany) were measured over the temperature range of 274–413 K. The combined expanded uncertainty of the temperature [...]

58 449