Energy Technology

Cover image for Vol. 1 Issue 8

August 2013

Volume 1, Issue 8

Pages 425–486

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Review
    6. Full Papers
    7. Book Reviews
    1. You have free access to this content
      Cover Picture: Electrochemical Fabrication of Coaxial Wavy-Channel NiIIIO(OH)/Ni Nanocomposites for High-Performance Supercapacitor Electrode Materials (Energy Technol. 8/2013) (page 425)

      Chun-Kwan Tsang, Shanshan Zeng, Hua Cheng, Lingxia Zheng, Jie Zhang, Hui Li, Shi-Wei Shu, Tak Fu Hung, Prof. Jian Lu  and Prof. Yang Yang Li 

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201390014

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      Making Waves—Wavy-Channel Supercapacitor Electrodes: The cover image illustrates a NiIIIO(OH)/Ni coaxial nanocomposite with NiIIIO(OH) wrapped around a conductive Ni scaffold. The electrode could be prepared electrochemically with vertically oriented nanochannels and periodically corrugated channel walls. The Full Paper by Jian Lu and Yang Yang Li with colleagues at the City University of Hong Kong on page 478 demonstrated that this type of nanocomposite readily serves as a supercapacitor electrode with a remarkable specific capacitance of 2372 F g−1 at 1 A g−1 and excellent cyclability.

  2. Graphical Abstract

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

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Review
    6. Full Papers
    7. Book Reviews
    1. Forum Section (pages 432–436)

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201305006

      Thumbnail image of graphical abstract
  4. Review

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Review
    6. Full Papers
    7. Book Reviews
    1. Review of Maximum-Power-Point Tracking Techniques for Solar-Photovoltaic Systems (pages 438–448)

      Rahul Rawat and Prof.  S. S. Chandel

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201300053

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      Power to the max! Twenty-one maximum-power-point tracking techniques for photovoltaic systems are reviewed. The modified variable step incremental conductance technique, is found to be best in terms of steady-state error, response time, convergence time, and efficiency, whereas the modified adaptive perturb and observe technique, is found to be best on the basis of cost, hardware requirements, and efficiency.

  5. Full Papers

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Review
    6. Full Papers
    7. Book Reviews
    1. A Comparison of the Gas-Product-Release Characteristics from Coal Pyrolysis and Hydrogasification (pages 449–456)

      Bingqing Hong, Dr. Xingjun Wang, Dr. Zhijie Zhou and Prof. Dr. Guangsuo Yu

      Version of Record online: 9 AUG 2013 | DOI: 10.1002/ente.201300052

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      Hydrogasification vs. pyrolysis: The gas release profiles are compared for the hydrogasification and pyrolysis of coal under different reaction conditions and with different catalysts for the synthesis of synthetic natural gas. Potassium- and sodium-based catalysts are shown to have a significant effect on the formation of methane under a hydrogen atmosphere.

    2. Purification of Natural Gas by forming H2S Hydrates (pages 457–462)

      Prof. Dr. Michael Golombok and Ronald Schoonebeek

      Version of Record online: 2 AUG 2013 | DOI: 10.1002/ente.201300066

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      The importance of staying hydrated: Many associated gas fields are too contaminated with H2S to be economically cleaned by the standard amine process. A scheme is presented for doing this by selectively making H2S rich hydrates for purifying the natural gas. The reaction scheme uses a sealed water loop and H2S is regenerated at pressure.

    3. Optimization of the Protonation Level of Polyaniline-Based Hole-Transport Layers in Bulk-Heterojunction Organic Solar Cells (pages 463–470)

      Omar Abdulrazzaq, Dr. Shawn E. Bourdo, Dr. Viney Saini, Venu G. Bairi, Dr. Enkeleda Dervishi , Dr. Tito Viswanathan, Zeid A. Nima and Dr. Alexandru S. Biris

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201300058

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      Half protonation for hole transfer: The use of polyaniline is investigated as a hole-transporting layer in P3HT:PCBM organic solar cells. Camphorsulfonic acid is used to protonate PANI and the influence of protonation levels (doping concentration) in PANI on the hole-transport properties is presented. The results show that half-protonated PANI performs the best as HTL in P3HT:PCBM organic photovoltaics.

    4. Impact of Different Surfactants and their Mixtures on Methane-Hydrate Formation (pages 471–477)

      Alireza Fazlali, Seyedeh-Atieh Kazemi, Mostafa Keshavarz-Moraveji and Dr. Amir H. Mohammadi

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201300041

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      Mixing it up: Twenty-one experiments were performed to investigate the effects of three types of surfactants and their mixtures on the methane-hydrate-formation kinetics and thermodynamics. Gas hydrates can be used as a potential means for natural gas storage, and the design of a gas-hydrate-based unit requires accurate knowledge of hydrate-formation kinetics especially in the presence of promoters.

    5. Electrochemical Fabrication of Coaxial Wavy-Channel NiIIIO(OH)/Ni Nanocomposites for High-Performance Supercapacitor Electrode Materials (pages 478–483)

      Chun-Kwan Tsang, Shanshan Zeng, Hua Cheng, Lingxia Zheng, Jie Zhang, Hui Li, Shi-Wei Shu, Tak Fu Hung, Prof. Jian Lu  and Prof. Yang Yang Li 

      Version of Record online: 18 JUL 2013 | DOI: 10.1002/ente.201300016

      Thumbnail image of graphical abstract

      Wavy-channel electrode: A NiIIIO(OH)/Ni coaxial nanocomposite, in which NiIIIO(OH) wraps around a conductive Ni scaffold, is electrochemically prepared for use as a supercapacitor electrode material. The nanocomposite features vertically oriented nanochannels with periodically-corrugated channel walls. This nanostructure readily serves as a supercapacitor electrode with a high specific capacitance and excellent cyclability.

  6. Book Reviews

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Forum Section
    5. Review
    6. Full Papers
    7. Book Reviews
    1. Hydrogen, the Post-Oil Fuel?. Edited by  Édouard Freund and Paul Lucchese (pages 484–485)

      Prof. Burtron H. Davis

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201305009

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      Editions Technip, Paris 2012, 336 pp., €85.00—ISBN 978-2-7108-0984-5

    2. Production and Purification of Ultraclean Transportation Fuels. Edited by  Yun Hang Hu, Xiaoliang Ma, Elise Fox, and Xinwen Guo (pages 485–486)

      Prof. Krijn de Jong and Prof. Nimir O. Elbashir

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/ente.201305010

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      ACS American Chemical Society, Washington, DC, 2012, 203 pp., €119.99—ISBN 978-0841226937

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