ChemSusChem

Cover image for Vol. 8 Issue 14

Special Issue: Sustainable Chemistry at Sungkyunkwan University

July 20, 2015

Volume 8, Issue 14

Pages 2270–2419

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
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      Cover Picture: (ChemSusChem 14/2015) (page 2270)

      Article first published online: 20 JUL 2015 | DOI: 10.1002/cssc.201590026

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      The Cover picture of this Special Issue highlights different aspects of sustainable chemistry research at Sungkyunkwan University (SKKU) in Korea. One important aspect represents the development and characterization of improved interfaces and materials for solar cells. Other aspects that feature strongly are energy storage in batteries and capacitors through development of new materials and characterization techniques and water splitting using solar energy. More research into sustainability at SKKU can be discovered in this Special Issue. The art works for this cover were created by INDI Networks.

  2. Editorial

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    3. Editorial
    4. Graphical Abstract
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    6. News
    7. Reviews
    8. Minireview
    9. Communication
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      Sustainable Chemistry at Sungkyunkwan University (page 2271)

      Prof. Nam-Gyu Park

      Article first published online: 16 JUL 2015 | DOI: 10.1002/cssc.201500902

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      Special Issue: Sustainable Chemistry at Sungkyunkwan University. Sustainable chemistry is key to the development of efficient renewable energies, which will become more and more important in order to combat global warming. In this Editorial, guest editor Prof. Nam-Gyu Park describes the context of this Special Issue on top-quality research towards sustainability performed at Sungkyunkwan University (SKKU) in Korea. Scientists at SKKU work on, for example, photovoltaic solar cells to generate low-cost electricity, lithium batteries and capacitors to store electricity, piezoelectric nanogenerators, thermoelectric devices, hydrogen generation, and fuel cells.

  3. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
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      Graphical Abstract: ChemSusChem 14/2015 (pages 2272–2277)

      Article first published online: 20 JUL 2015 | DOI: 10.1002/cssc.201590027

  4. Masthead

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
    1. Masthead: ChemSusChem 14/2015 (pages 2278–2279)

      Article first published online: 20 JUL 2015 | DOI: 10.1002/cssc.201590028

  5. News

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
  6. Reviews

    1. Top of page
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    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
    1. Carbon-Based Materials for Lithium-Ion Batteries, Electrochemical Capacitors, and Their Hybrid Devices (pages 2284–2311)

      Dr. Fei Yao, Duy Tho Pham and Prof. Young Hee Lee

      Article first published online: 3 JUL 2015 | DOI: 10.1002/cssc.201403490

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      Mad LIBs: Electrochemical storage mechanisms based on carbon materials for both lithium-ion batteries (LIBs) and electrochemical capacitors (ECs) are introduced. Non-faradic processes, faradic reactions, electrochemical performance, impedance behavior, cell conductivity, electrode/electrolyte interface, and ion diffusion are explained. Finally, recent progress in the design of anodes for LIBs, ECs, and their hybrids are reviewed.

    2. Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride (pages 2312–2326)

      Hyeona Mun, Prof. Soon-Mok Choi, Prof. Kyu Hyoung Lee and Prof. Sung Wng Kim

      Article first published online: 17 MAR 2015 | DOI: 10.1002/cssc.201403485

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      Boundary engineering for thermoelectrics: For a further enhancement of the thermoelectric figure of merit, boundary engineering is demonstrated as one of the most effective ways to enhance the thermoelectric performance of conventional thermoelectric materials such as Bi2Te3, PbTe, and SiGe alloys. We review the boundary engineering strategy into two parts; 1) grain boundary engineering and 2) phase boundary engineering using Bi2Te3-based bulk alloys.

    3. Recent Progress on Flexible Triboelectric Nanogenerators for SelfPowered Electronics (pages 2327–2344)

      Dr. Ronan Hinchet, Wanchul Seung and Prof. Sang-Woo Kim

      Article first published online: 6 JUL 2015 | DOI: 10.1002/cssc.201403481

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      Electrifying progress: Mechanical energy harvesters are becoming a valuable energy source for autonomous systems. Specifically, flexible triboelectric nanogenerators are quickly evolving. They are now easy to integrate and exhibit good performance, both of which make them perfect candidates for many applications. This review introduces this new technology and presents its recent progress and some of the latest trends.

  7. Minireview

    1. Top of page
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    7. Reviews
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    1. Chemical Conversions of Biomass-Derived Platform Chemicals over Copper–Silica Nanocomposite Catalysts (pages 2345–2357)

      Dr. Pravin P. Upare, Prof. Young Kyu Hwang, Dr. Jong-Min Lee, Dr. Dong Won Hwang and Prof. Jong-San Chang

      Article first published online: 16 JUL 2015 | DOI: 10.1002/cssc.201500091

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      On the platform of synthesis: This Minireview deals with recent progress in the vapor-phase chemical conversion of biomass-derived C4–C6 carboxylic acids and esters using copper–silica nanocomposite catalysts. It is demonstrated that the nanocomposite catalysts can play a role as platform catalysts for hydrogenation and dehydrogenation of carboxylic acids and esters to produce value-added cyclic compounds and bioalcohols from biomass-derived platform chemicals.

  8. Communication

    1. Top of page
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    6. News
    7. Reviews
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    10. Full Papers
    1. Hierarchically Structured Hole Transport Layers of Spiro-OMeTAD and Multiwalled Carbon Nanotubes for Perovskite Solar Cells (pages 2358–2362)

      Jiyong Lee, Dr. Mini Mol Menamparambath, Dr. Jae-Yeol Hwang and Prof. Seunghyun Baik

      Article first published online: 26 MAY 2015 | DOI: 10.1002/cssc.201403462

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      Respect the hierarchy! Multiwalled carbon nanotubes (MWNTs) are embedded in spiro-OMeTAD to improve electrical conductivity. Perovskite solar cells employing a hierarchical hole transport layer (HTL) structure, comprising pure spiro-OMeTAD and spiro-OMeTAD/MWNT layers, show better blocking of back-electron transfer while fully exploiting the enhanced conductivity of the spiro-OMeTAD/MWNT material. The power conversion efficiency of these perovskite solar cells is improved, to 15.1 %.

  9. Full Papers

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Reviews
    8. Minireview
    9. Communication
    10. Full Papers
    1. Nanotubular Heterostructure of Tin Dioxide/Titanium Dioxide as a Binder-Free Anode in Lithium-Ion Batteries (pages 2363–2371)

      Myungjun Kim, Joobong Lee, Seonhee Lee, Seongrok Seo, Dr. Changdeuck Bae and Prof. Hyunjung Shin

      Article first published online: 20 MAR 2015 | DOI: 10.1002/cssc.201500005

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      Solid foundations: Arrays of TiO2, SnO2, heterotubular TiO2/SnO2, and TiO2/SnO2/TiO2 as binder-free anodes in lithium-ion batteries are successfully synthesized by using template-assisted atomic-layer deposition (ALD), which enables not only precise structural control, but also suppression of a large volume change in SnO2.

    2. Thermoelectric Properties of Nanowires with a Graphitic Shell (pages 2372–2377)

      Jong Woon Lee, Dr. Eun Kyung Lee, Dr. Byung Sung Kim, Dr. Jae Hyun Lee, Hee Goo Kim, Hyeon Sik Jang, Dr. Sung Woo Hwang, Dr. Byoung Lyong Choi and Prof. Dr. Dongmok Whang

      Article first published online: 4 MAY 2015 | DOI: 10.1002/cssc.201403492

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      Cool under fire: The electrical and thermal properties of Si and SiO2 nanowires with a few-layer graphitic shell are explored; these structures exhibit enhanced electrical properties but no increase in thermal conductivity. Phonons are transported through the core nanowire, which has a large cross-sectional area relative to that of the graphitic shell, and the main current path is the graphitic shell owing to its good electrical conductivity.

    3. Probing the Additional Capacity and Reaction Mechanism of the RuO2 Anode in Lithium Rechargeable Batteries (pages 2378–2384)

      Yunok Kim, Shoaib Muhammad, Hyunchul Kim, Prof. Yong-Hun Cho, Prof. Hansu Kim, Prof. Ji Man Kim and Prof. Won-Sub Yoon

      Article first published online: 30 JUN 2015 | DOI: 10.1002/cssc.201403488

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      Add this, RuO2: The electrochemical reaction mechanism of RuO2 as anode is investigated to determine the source of capacity found in addition to its known theoretical capacity by using X-ray-based characterization and electrochemical techniques. The results show that 4 mol of Li atoms are stored by a conversion reaction whereas the additional capacity is achieved through a fast Li-ion storage in the grain boundary. This forms the basis of advanced Li-ion batteries capable of high energy and power densities.

    4. Very Important Paper

      Incorporation of a Metal Oxide Interlayer using a Virus-Templated Assembly for Synthesis of Graphene-Electrode-Based Organic Photovoltaics (pages 2385–2391)

      Dr. Yong Man Lee, Wanjung Kim, Dr. Young Hun Kim, Jung Kyu Kim, Ji-ryang Jang, Prof. Woo-Seok Choe, Prof. Jong Hyeok Park and Prof. Pil J. Yoo

      Article first published online: 25 MAR 2015 | DOI: 10.1002/cssc.201403487

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      Virus scan: The synthesis and incorporation of a WO3 interlayer into graphene-electrode-based organic photovoltaic (OPV) devices is developed by using an engineered biotemplate of M13 viruses. Owing to uniform deposition of the WO3 layer and maintenance of the electrical properties of the graphene electrode, a remarkable increase in the photoconversion efficiency (>20 %) relative to that of conventional OPVs can be obtained.

    5. Niobium Doping Effects on TiO2 Mesoscopic Electron Transport Layer-Based Perovskite Solar Cells (pages 2392–2398)

      Dong Hoe Kim, Gill Sang Han, Won Mo Seong, Jin-Wook Lee, Byeong Jo Kim, Prof. Nam-Gyu Park, Prof. Kug Sun Hong, Dr. Sangwook Lee and Prof. Hyun Suk Jung

      Article first published online: 17 APR 2015 | DOI: 10.1002/cssc.201403478

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      Nb-doped TiO2 nanoparticles for perovskite solar cell: TiO2 nanoparticles doped with n-type Nb5+ have a diameter of 30 nm and a pure anatase phase; they are used for fabricating perovskite solar cells. Light doping increases the photovoltaic energy conversion efficiency by 10 % due to improved electron injection/transport properties of the nanoparticle-based electron transport layer.

    6. Surfactant Effects on the Morphology and Pseudocapacitive Behavior of V2O5⋅H2O (pages 2399–2406)

      Aniu Qian, Kai Zhuo, Myung Sik Shin, Woo Won Chun, Bit Na Choi and Prof. Chan-Hwa Chung

      Article first published online: 25 FEB 2015 | DOI: 10.1002/cssc.201403477

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      Morphing into it: The effect of diverse surfactants on the morphology of V2O5H2O powders is studied. The pseudocapacitive behavior of V2O5H2O powders mediated by polyethylene glycol 6000exhibit a high capacitance at a scan rate of 5 mV s−1. Moreover, the V2O5H2O electrode mediated by Pluronic P-123 delivers a high capacitance with excellent stability after 200 cycles.

    7. Synthesis and Nanostructures of Metal Selenide Precursors for Cu(In,Ga)Se2 Thin-Film Solar Cells (pages 2407–2413)

      Ji-Hyun Cha, Se Jin Noh and Prof. Duk-Young Jung

      Article first published online: 8 MAY 2015 | DOI: 10.1002/cssc.201403464

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      GaGa over nanoparticles: Variation of the gallium concentration in Cu(In0.7Ga0.3)Se2 nanoparticles (CIGSe NPs is investigated by sonochemical synthesis in hydrazine/ethylene glycol solution. The CIGSe device prepared by the nanoink solution based process exhibits a conversion efficiency of 5.17 %.

    8. On the Role of Interfaces in Planar-Structured HC(NH2)2PbI3 Perovskite Solar Cells (pages 2414–2419)

      Dong-Jin Seol, Jin-Wook Lee and Nam-Gyu Park

      Article first published online: 16 APR 2015 | DOI: 10.1002/cssc.201403442

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      Focus on interfaces: A planar-junction perovskite solar cell composed of TiO2/formamidinium lead iodide(FAPbI3)/spiro-MeOTAD is fabricated, in which interfaces of FAPbI3 in contact with TiO2 and spiro-MeOTAD are modified to investigate the role of each interface. The TiO2/FAPbI3 interface is found to play an important role in determining short-circuit photocurrent, while the FAPbI3/spiro-MeOTAD interfacial role is involved in governing open-circuit voltage.

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