Energy Technology

Cover image for Vol. 1 Issue 2‐3

March 2013

Volume 1, Issue 2-3

Pages 113–192

  1. Cover Pictures

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
    1. You have free access to this content
      Cover Picture: Reinforced Electrode Architecture for a Flexible Battery with Paperlike Characteristics (Energy Technol. 2-3/2013) (page 113)

      Abhinav M. Gaikwad, Howie N. Chu, Rigers Qeraj, Alla M. Zamarayeva and Prof. Daniel A. Steingart

      Version of Record online: 11 MAR 2013 | DOI: 10.1002/ente.201390002

      Thumbnail image of graphical abstract

      A Robust Battery—Bringing in Reinforcements: The cover picture shows a battery electrode that was reinforced by embedding the electrochemically active composite inside a fibrous-membrane support. The membrane absorbs the stresses generated during flexing and prevents mechanical degradation. The anode, separator, and cathode are stacked together to form a flexible battery, as described in the Full Paper by Daniel A. Steingart and colleagues at the City College of New York on page 177. Electrochemical and mechanical characterization shows that the batteries with reinforced electrodes maintain their capacity and performance even under the mechanical stresses generated during flexing. Robust, flexible batteries such as the one demonstrated in this work are critical to enable the large-scale deployment of mobile, flexible electronic devices.

    2. You have free access to this content
      Inside Cover: Demonstrating the Highest Supercapacitive Performance of Branched MnO2 Nanorods Grown Directly on Flexible Substrates using Controlled Chemistry at Ambient Temperature (Energy Technol. 2-3/2013) (page 114)

      Dr. Deepak P. Dubal, Jong Guk Kim, Youngmin Kim, Prof. Rudolf Holze and Prof. Won Bae Kim

      Version of Record online: 11 MAR 2013 | DOI: 10.1002/ente.201390003

      Thumbnail image of graphical abstract

      Flexible supercapacitors: This inside cover image shows a visualization of branched MnO2 nanorods for use in supercapacitors from Won Bae Kim and colleagues at Gwangju Institute of Science and Technology and Rudolf Holze at the Technische Universität Chemnitz. In their Communication on page 125, the authors demonstrate a simple and efficient growth procedure on a flexible, stainless-steel substrate at ambient temperature. A high capacitive performance was demonstrated for the next-generation of flexible supercapacitors.

  2. Graphical Abstract

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
  3. Masthead

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
    1. Masthead: Energy Technol. 2-3/2013 (page 121)

      Version of Record online: 11 MAR 2013 | DOI: 10.1002/ente.201390005

  4. Forum Section

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
    1. Forum Section (pages 122–124)

      Version of Record online: 11 MAR 2013 | DOI: 10.1002/ente.201305001

  5. Communications

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
    1. Demonstrating the Highest Supercapacitive Performance of Branched MnO2 Nanorods Grown Directly on Flexible Substrates using Controlled Chemistry at Ambient Temperature (pages 125–130)

      Dr. Deepak P. Dubal, Jong Guk Kim, Youngmin Kim, Prof. Rudolf Holze and Prof. Won Bae Kim

      Version of Record online: 29 JAN 2013 | DOI: 10.1002/ente.201200040

      Thumbnail image of graphical abstract

      Bendy electrodes: A simple and efficient route for the growth of branched MnO2 nanorods on a flexible substrate at ambient temperature without templates is reported. The capacitive characteristics of the MnO2 nanorods presented here can be applied to produce inexpensive and high-performance flexible supercapacitors on a large scale. Practical demonstration could show technological interest for the design of flexible electrodes in the industry.

    2. Air-Stable, Low-Toxicity Precursors for CuIn(SeS)2 Solar Cells with 10.1 % Efficiency (pages 131–134)

      Wangen Zhao, Yong Cui and Daocheng Pan

      Version of Record online: 18 FEB 2013 | DOI: 10.1002/ente.201200044

      Thumbnail image of graphical abstract

      Intelligent solution: A facile solution-based method is developed to fabricate high-efficiency CuIn(SeS)2 solar cells. Low-cost copper(I) oxide, indium hydroxide, carbon disulfide, and butylamine are used as the starting materials and used to make the precursor solution. A high conversion efficiency of up to 10.1 % for CuIn(SeS)2 solar cells is achieved without anti-reflection coating.

    3. Preparation of Biodiesel from Castor Oil Catalyzed by Novel Basic Ionic Liquid (pages 135–138)

      Prof. Dr. Dong Fang, Chenning Jiang and Prof. Jinming Yang

      Version of Record online: 10 FEB 2013 | DOI: 10.1002/ente.201200026

      Thumbnail image of graphical abstract

      Ionic powers: A basic ionic liquid is used as a catalyst for the preparation of biodiesel by transesterification of castor oil with methanol, the catalytic performance is compared with conventional catalysts and ionic liquids. A high yield of 96 % is achieved under optimal reaction conditions, and the green reaction procedure shows promise for industrial application.

  6. Full Papers

    1. Top of page
    2. Cover Pictures
    3. Graphical Abstract
    4. Masthead
    5. Forum Section
    6. Communications
    7. Full Papers
    1. Fabrication and Photovoltaic Properties of Silicon Solar Cells with Different Diameters and Heights of Nanopillars (pages 139–143)

      Jing Liu, Xinshuai Zhang, Marina Ashmkhan, Gangqiang Dong, Yuanxun Liao, Bo Wang, Tianchong Zhang and Futing Yi

      Version of Record online: 29 JAN 2013 | DOI: 10.1002/ente.201200031

      Thumbnail image of graphical abstract

      Pillars of the scientific community: Solar cells with different diameters and heights silicon nanopillars are fabricated by CsCl self-assembly lithography and dry etching. The surface reflectivity and solar cell efficiency are greatly influenced by nanopillars' diameter and height. Nanopillars of 200 nm diameter and 1.5 μm height can suppress reflectivity to 5 % and the dimensions are optimized to achieve the highest device efficiency.

    2. Neuro-Fuzzy Prediction of Fe-V2O5-Promoted γ-Alumina Catalyst Behavior in the Reverse Water–Gas–Shift Reaction (pages 144–150)

      Prof. M. A. Takassi, A. Gharibi Kharaji, M. Esfandyari and M. KoolivandSalooki

      Version of Record online: 1 MAR 2013 | DOI: 10.1002/ente.201200012

      Thumbnail image of graphical abstract

      Soft computing produces hard results: The application of a Fe-V2O5-promoted γ-alumina catalyst is studied for the reverse water–gas–shift reaction under a wide range of synthesis conditions, temperatures, and CO2/H2 ratios in a batch reactor. The experimental results are compared with neuro-fuzzy simulation results.

    3. Polymeric Ionic Hybrid as Solid Acid Catalyst for the Selective Conversion of Fructose and Glucose to 5-Hydroxymethylfurfural (pages 151–156)

      Dr. Hu Li, Xudong He, Qiuyun Zhang, Dr. Fei Chang, Dr. Wei Xue, Dr. Yuping Zhang and Prof. Song Yang

      Version of Record online: 10 FEB 2013 | DOI: 10.1002/ente.201200041

      Thumbnail image of graphical abstract

      Functionalized polymeric ionic hybrid: Brønsted-acidic poly(1-vinyl-3-propane sulfonate imidazolium)-H3PW12O40 [poly(VMPS)-PW] is prepared by combining a SO3H-functionalized ionic liquid (IL) polymer with a heteropoly acid (HPA) and shows high thermal stability, medium-strength acidity, and other unique physicochemical properties. This type of polymeric ionic hybrid is used as a solid catalyst for the selective conversion of fructose and glucose to 5-hydroymethylfurfural (HMF).

    4. Statistical Optimization of Process Variables for Methane Conversion over Zn-Mo/H-ZSM-5 Catalysts in the Presence of Methanol (pages 157–165)

      Sachchit Majhi, Pravakar Mohanty, Prof. Ajay K. Dalai and Prof. Kamal K. Pant

      Version of Record online: 27 FEB 2013 | DOI: 10.1002/ente.201200049

      Thumbnail image of graphical abstract

      Perfecting processes! xZn-5 % Mo/H-ZSM-5 catalysts are prepared by using a conventional impregnation method. Methane conversion is studied using methanol to activate methane for improved conversion. Central composite experimental design is used to study the effects that different parameters have on methane conversion. Active component compositions, textural properties, metal dispersions, and acidity of the catalysts were determined by using a variety of analytical methods.

    5. Optimal Economic Design of an Extractive Distillation Process for Bioethanol Dehydration (pages 166–170)

      Anton A. Kiss and Radu M. Ignat

      Version of Record online: 1 MAR 2013 | DOI: 10.1002/ente.201200053

      Thumbnail image of graphical abstract

      Predistilled for Greatness: Bioethanol dehydration is an energy-intensive process that typically utilizes three distillation columns, the first of which is the preconcentration column (PDC). In this study, operating conditions of the PDC are optimized with respect to cost, and the optimal economic conditions are reached, showing that the concentration of the preconcentrated ethanol stream is a key variable in the process design.

    6. Prediction of Equilibrium Conditions for Hydrate Formation in Binary Gaseous Systems Using Artificial Neural Networks (pages 171–176)

      M. R. Moradi, Prof. K. Nazari , Dr. S. Alavi and M. Mohaddesi

      Version of Record online: 11 MAR 2013 | DOI: 10.1002/ente.201200056

      Thumbnail image of graphical abstract

      Professional networking: An artificial neural network is successfully used to develop a reliable method for prediction of the equilibrium formation conditions of clathrate hydrates of hydrocarbon gas mixtures using simple physical input parameters such as the weight fractions and normal boiling points of the components.

    7. Reinforced Electrode Architecture for a Flexible Battery with Paperlike Characteristics (pages 177–185)

      Abhinav M. Gaikwad, Howie N. Chu, Rigers Qeraj, Alla M. Zamarayeva and Prof. Daniel A. Steingart

      Version of Record online: 10 FEB 2013 | DOI: 10.1002/ente.201200027

      Thumbnail image of graphical abstract

      Bend and flex: A high-energy-density, nontoxic Zn–MnO2 battery with printed current collectors is fabricated. The Zn and MnO2 electrodes are prepared by using a solution-based embedding process. The cell has a nominal potential of 1.5 V and an effective capacity of approximately 3 mA h cm−2. The effects of bending and fatigue on the electrochemical performance and mechanical integrity of the battery are investigated.

    8. Electrochemical Performance of All-Solid-State Li/S Batteries with Sulfur-Based Composite Electrodes Prepared by Mechanical Milling at High Temperature (pages 186–192)

      Motohiro Nagao, Dr. Akitoshi Hayashi and Prof. Dr. Masahiro Tatsumisago

      Version of Record online: 1 MAR 2013 | DOI: 10.1002/ente.201200019

      Thumbnail image of graphical abstract

      Turning up the temperature: Sulfur-nanocarbon composites prepared by mechanical milling at high temperature (155 °C) show intimate contact between the sub-micrometer-sized sulfur particles and nanocarbon. All-solid-state Li/S batteries using the composite electrodes with 50 wt % sulfur content exhibit an excellent cyclability and a high gravimetric energy density.

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