Royal Society of Chemistry

Unusual energy enhancement in carbon-based electrochemical capacitors

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24213-24223
DOI: 10.1039/C2JM35711A, HighlightKrzysztof Fic, Elzbieta Frackowiak, Francois Beguin
High energy and eco-friendly supercapacitors are now accessible in aqueous medium through either redox reactions at the carbon-electrolyte interface or high over-potential for dihydrogen evolution.
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Supramolecular amphiphilic star-branched copolymer: from LCST-UCST transition to temperature-fluorescence responses

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24783-24791
DOI: 10.1039/C2JM35297D, PaperWeizhong Yuan, Hui Zou, Wen Guo, An Wang, Jie Ren
For star-PCL-(PDMAEMA)7 micelle solution, the fluorescent intensity decreases with the increase of temperature, while the fluorescent intensity increases with the increase of temperature for quaternized star-PCL-(PDMAEMA)7 micelle solution, indicating the unique temperature-fluorescence responsive behavior.
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Observation of the highest Mn3+/Mn2+ redox potential of 4.45 V in a Li2MnP2O7 pyrophosphate cathode

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24526-24529
DOI: 10.1039/C2JM35260E, CommunicationMao Tamaru, Prabeer Barpanda, Yuki Yamada, Shin-ichi Nishimura, Atsuo Yamada
Exploring the pyrophosphate chemistry, we have observed an Mn3+/Mn2+ redox potential at 4.45 V in Li2MnP2O7 cathode, benchmarking the highest ever Mn-redox potential among all known oxide and polyanionic Mn-based cathode materials.
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Alumina-coated silicon-based nanowire arrays for high quality Li-ion battery anodes

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24618-24626
DOI: 10.1039/C2JM35125K, PaperHung Tran Nguyen, Mihai Robert Zamfir, Loc Dinh Duong, Young Hee Lee, Paolo Bondavalli, Didier Pribat
We have studied the effect of thin Al2O3 coatings on Si-based nanowires for Li-ion battery anodes. We report a lifetime of 1280 cycles when the capacity is limited to 1200 mA h g-1.
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The influence of length of one-dimensional photoanode on the performance of dye-sensitized solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24591-24596
DOI: 10.1039/C2JM35413F, PaperLiang-Yih Chen, Yu-Tung Yin
The influence of the length of ZnO nanowire arrays (ZnO-NWAs) on the performance of dye-sensitized solar cells (DSSCs) was studied.
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Graphene-based Schottky junction solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24224-24229
DOI: 10.1039/C2JM33809B, HighlightYu Ye, Lun Dai
This highlight reviews the recent researches and developments of graphene-based Schottky junction solar cells, including graphene-on-silicon Schottky junction solar cells, and graphene/ single nanowire (nanobelt) Schottky junction solar cells.
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Effect of the structure transformation on the (de-)hydrogenation hysteresis of La1-zYzHx films as studied by hydrogenography

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24453-24462
DOI: 10.1039/C2JM34594C, PaperYevheniy Pivak, Herman Schreuders, Bernard Dam
The (de-)hydrogenation properties of La1-zYzHx (z = 0, 0.4, 1) thin films during the dihydride-trihydride transition were investigated by means of hydrogenography.
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Reducing recombination in ZnO photoanodes for dye sensitised solar cells through simple chemical synthesis

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24463-24468
DOI: 10.1039/C2JM34904C, PaperLioz Etgar, James S. Bendall, Vincent Laporte, Mark E. Welland, Michael Graetzel
A ZnO NW film with lower recombination centers has been developed, which demonstrates superior photovoltaic performance within a DSSC.
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Open-circuit voltage in organic solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24315-24325
DOI: 10.1039/C2JM33719C, Feature ArticleBoyuan Qi, Jizheng Wang
Recent progress in understanding the origin of open-circuit voltage in OSCs is reviewed. Based on the model of DOS, disorder in donor-acceptor materials and bimolecular recombination are two main sources of open-circuit voltage loss.
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Polyoxometalate-based materials for efficient solar and visible light harvesting: application to the photocatalytic degradation of azo dyes

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24509-24521
DOI: 10.1039/C2JM33246A, Feature ArticleAnne Dolbecq, Pierre Mialane, Bineta Keita, Louis Nadjo
Recently devised strategies using polyoxometalate (POM) based materials are shown to open up new green chemistry-type avenues for studying the degradation of organic pollutants, including azo dyes.
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Comparative studies of photochemical cross-linking methods for stabilizing the bulk hetero-junction morphology in polymer solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24417-24423
DOI: 10.1039/C2JM34284G, PaperJon Eggert Carle, Birgitta Andreasen, Thomas Tromholt, Morten V. Madsen, Kion Norrman, Mikkel Jorgensen, Frederik C. Krebs
Bromine, azide, vinyl and oxetane were incorporated into the side chains of the polymer TQ1. Cross-linking of the polymers was achieved by UV-light illumination to give solvent resistant films and reduced growth of PCBM crystallites.
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Carbon nanodots: synthesis, properties and applications

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24230-24253
DOI: 10.1039/C2JM34690G, Feature ArticleHaitao Li, Zhenhui Kang, Yang Liu, Shuit-Tong Lee
Carbon dots for potential applications in photocatalysis, optoelectronics, sensor, SERS, and bio-imaging.
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Understanding the stability of fluorosulfate Li-ion battery cathode materials: a thermochemical study of LiFe1-xMnxSO4F (0 [less-than-or-equal] x [less-than-or-equal] 1) polymorphs

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24446-24452
DOI: 10.1039/C2JM34071B, PaperA. V. Radha, J. D. Furman, M. Ati, B. C. Melot, J. M. Tarascon, A. Navrotsky
Tavorite and triplite are equally stable at ambient temperature but triplite is thermodynamically favored at high temperatures because of entropy.
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Dye-sensitized solar cells incorporating novel Co(II/III) based-redox electrolytes solidified by silica nanoparticles

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24430-24438
DOI: 10.1039/C2JM33752E, PaperThomas Stergiopoulos, Maria Bidikoudi, Vlassis Likodimos, Polycarpos Falaras
An innovative solidified redox electrolyte for dye-sensitized solar cells (DSCs) was prepared by incorporating amorphous silica nanoparticles in a liquid system containing the Co2+/Co3+ shuttle dissolved in methoxypropionitrile. The incorporation of the solidified electrolyte in a DSC configuration resulted in an efficiency up to about 4% under 0.23 sun (AM 1.5G) illumination.
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Top-down meets bottom-up: organized donor-acceptor heterojunctions for organic solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24297-24314
DOI: 10.1039/C2JM33756H, Feature ArticleMingfeng Wang, Fred Wudl
This review summarizes recent progress on both materials synthesis and self-assembly and lithography techniques toward ordered nanostructures and well-defined D/A interfaces that are expected to enhance the performance of organic solar cells.
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Catalytic activity of metal-based nanoparticles for photocatalytic water oxidation and reduction

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24284-24296
DOI: 10.1039/C2JM32926C, Feature ArticleShunichi Fukuzumi, Yusuke Yamada
This article presents water reduction by non-Pt metal nanoparticles and water oxidation by metal oxide nanoparticles prepared from metal complexes.
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Metal oxides for interface engineering in polymer solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24202-24212
DOI: 10.1039/C2JM33838F, HighlightSong Chen, Jesse R. Manders, Sai-Wing Tsang, Franky So
Significant progress in power conversion efficiencies and stabilities of polymer solar cells has been achieved using semiconducting metal oxides as charge extraction interlayers.
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Influence of cations of the electrolyte on the performance and stability of dye sensitized solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24424-24429
DOI: 10.1039/C2JM34706G, PaperPhilippe Wyss, Thomas Moehl, Shaik M. Zakeeruddin, Michael Gratzel
Novel electrolytes for high performance and stable dye sensitized solar cells.
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Facile synthesis of nanostructured vanadium oxide as cathode materials for efficient Li-ion batteries

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24439-24445
DOI: 10.1039/C2JM34078J, PaperYanyi Liu, Evan Uchaker, Nan Zhou, Jiangang Li, Qifeng Zhang, Guozhong Cao
Homogeneous VO2 (B) nanorods approximately 100 nm in width and 1-2 [small mu ]m in length have been fabricated via the hydrothermal process, and are then transformed into irregularly shaped V2O5 nanoparticles several hundreds of nanometers large and 20-30 nm thick after annealing the precursor material at 500 [degree]C for 30 min.
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Charge separation dynamics in a narrow band gap polymer-PbS nanocrystal blend for efficient hybrid solar cells

J. Material Chem. - 19 November, 2012 - 05:54

J. Mater. Chem., 2012, 22,24411-24416
DOI: 10.1039/C2JM34034H, PaperClaudia Piliego, Marianna Manca, Renee Kroon, Maksym Yarema, Krisztina Szendrei, Mats R. Andersson, Wolfgang Heiss, Maria A. Loi
An opportune mixing of PbS nanocrystals and a narrow band gap polymer led to hybrid solar cells with a broad spectral response and an efficiency of [similar]3%.
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