Energy Technology

Cover image for Vol. 1 Issue 10

October 2013

Volume 1, Issue 10

Pages 557–618

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. You have free access to this content
      Cover Picture: Optimization and Analysis of High-Power Hydrogen/Bromine-Flow Batteries for Grid-Scale Energy Storage (Energy Technol. 10/2013) (page 557)

      Kyu Taek Cho, Paul Albertus, Vincent Battaglia, Aleksandar Kojic, Venkat Srinivasan and Adam Z. Weber

      Version of Record online: 7 OCT 2013 | DOI: 10.1002/ente.201390018

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      H2/Br2 Flow Batteries—A Grid-Scale Energy-Storage Solution: The cover image depicts a H2/Br2 flow battery of the type described in the Full Paper on page 596 by Adam Weber and colleagues at Lawrence Berkeley National Laboratory with collaborators at the Robert Bosch Research and Technology Center. Bromine and hydrogen molecules are fed during discharge and converted into hydrobromic acid with the electrons available for work on the electrical grid. During charging, the hydrobromic acid is fed and electrolyzed into hydrogen and bromine by using electricity from intermittent renewable sources such as solar photovoltaics and wind energy. In this fashion, the flow battery acts as a buffer and stabilizer against the variability of such sources of energy. The equation highlights the importance of cost modeling, which is explored in this study, on an operating parameter space that includes the key variables of area-specific resistance, current density, and various cost sources, including capital, operating, and manufacturing costs.

  2. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
  3. Forum Section

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. Forum Section (pages 564–565)

      Version of Record online: 7 OCT 2013 | DOI: 10.1002/ente.201305014

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      The latest news from the world of energy technology, including energy generation, conversion, storage, and distribution.

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. Nanostructured SnO2@TiO2 Core-Shell Composites: A High-Rate Li-ion Anode Material Usable without Conductive Additives (pages 567–572)

      Ge Ji, Bo Ding, Yue Ma and Prof. Jim Yang Lee

      Version of Record online: 12 SEP 2013 | DOI: 10.1002/ente.201300073

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      High-rate anode: A method is presented to produce reversible Li-ion storage hosts as nanoparticles furnished with their own current collectors. The subsequent decrease in interparticle electrical resistance enabled SnO2 to be used as a lithium-ion battery anode without any conductive additive, even surpassing tin oxide with 10 wt % (typical value) of conductive additive in rate performance.

    2. Optimization and Cost-Oriented Comparison of Ammonia- and Propane-Compression Refrigeration for the Recovery of Natural Gas Liquids (pages 573–580)

      Rachid Chebbi, Muhammad Qasim, Naif A. Darwish and Muhammad Tahir Ashraf

      Version of Record online: 23 SEP 2013 | DOI: 10.1002/ente.201300069

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      Refrigeration optimization: The simulation, optimization, and exergy and economic analyses of propane- and ammonia-refrigeration economizer cycles with and without presaturators are performed by using HYSYS for use in the recovery of natural gas liquids. Ammonia cycles with presaturators are found to offer the lowest cost and lost work, and the highest coefficient of performance.

    3. Mild Hydrothermal Degradation of Cotton Cellulose by using a Mixed-Metal-Oxide ZnO–ZrO2 Catalyst (pages 581–586)

      Fang Yang, Gang Li, Peng Gao, Xiao-Na Lv, Xiaofeng Sun, Zhi-Hua Liu and Hongxian Fan

      Version of Record online: 23 SEP 2013 | DOI: 10.1002/ente.201300068

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      Catalyzing success: The solid mixed-metal-oxide ZnO–ZrO2 is prepared and employed as the catalyst for the hydrothermal degradation of cotton cellulose under a mild conditions (463 K, 1.4 MPa). This process achieved an improvement in the yield of 5-hydroxymethylfurfural (HMF) and cellulose conversion.

    4. A Reservoir/Wellbore-Coupling Model for the Pressure, Flow Rate, and Optimum Perforation Distribution in Gas Wells (pages 587–595)

      Jiancheng Hu

      Version of Record online: 23 SEP 2013 | DOI: 10.1002/ente.201300096

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      Tight coupling: Optimum perforation schemes largely reduce the damage to the reservoir, and improve the productivity of oil and gas wells. Based on a coupled model of pressure and flow rate in a perforated well, a series of optimization models are established to calculate the optimal perforation distribution for a vertical gas well. The results provide technical reliability for well test design process and further provide a dynamic analysis for production.

    5. Optimization and Analysis of High-Power Hydrogen/Bromine-Flow Batteries for Grid-Scale Energy Storage (pages 596–608)

      Kyu Taek Cho, Paul Albertus, Vincent Battaglia, Aleksandar Kojic, Venkat Srinivasan and Adam Z. Weber

      Version of Record online: 7 OCT 2013 | DOI: 10.1002/ente.201300108

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      Hustle and flow: H2/Br2 redox flow battery is studied for grid-scale energy storage. Optimization of conditions and components demonstrate high ambient performance both in peak power and limiting current density. The combined experiments and cost model reveal the importance of area-specific resistance and nonintuitive optimized operating conditions.

  5. Communication

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. Protic Ionic Solids and Liquids Based on the Guanidinium Cation as Phase-Change Energy-Storage Materials (pages 609–612)

      R. Vijayraghavan, Usman Ali Rana, Gloria D. Elliott and Douglas R. MacFarlane

      Version of Record online: 9 SEP 2013 | DOI: 10.1002/ente.201300101

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      Energy storage worth its salt: A series of protic salts are synthesized and their thermal properties characterized; the guanidinium triflate and mesylate salts exhibit high heats of fusion (ΔHf), which indicates their promising role in energy storage applications, particularly in the temperature range of 100–200 °C.

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. Highly Efficient Polymer Solar Cells by using the Homogeneous Self-Assembly of a Sulphydryl-Capped Photoactive Polymer Covalently Bound to the Anode (pages 613–616)

      Dr. Lipei Zhang, Xing Xing, Prof. Zhijian Chen, Prof. Lixin Xiao, Dr. Bo Qu and Prof. Qihuang Gong

      Version of Record online: 23 SEP 2013 | DOI: 10.1002/ente.201300086

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      Bound for greatness: A sulfhydryl-capped photoactive polymer is synthesized and covalently bound to the anode consisting of a thin layer of gold on ITO by using self-assembly. A high power conversion efficiency is achieved for the device due to a reduction of the energy barrier between the anode and the active layer.

  7. Book Reviews

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Full Papers
    6. Communication
    7. Communications
    8. Book Reviews
    1. Handbook of Battery Materials. Second Edition; Edited by Claus Daniel and Jürgen O. Besenhard (pages 617–618)

      Dominic Bresser and Prof.  Stefano Passerini

      Version of Record online: 28 AUG 2013 | DOI: 10.1002/ente.201305013

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      Wiley-VCH, Weinheim, 2011, 989 pp., hardcover, two-volume set, €349.00—ISBN 978-3-527-32695-2

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