GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Colloidal CuZnSnSe4−xSx nanocrystals for hybrid solar cells
    Elsevier BV ; 2015
    In:  Optical Materials Vol. 39 ( 2015-01), p. 103-109
    Details
    In: Optical Materials, Elsevier BV, Vol. 39 ( 2015-01), p. 103-109
    Type of Medium: Online Resource
    ISSN: 0925-3467
    URL: Article
    DOI: 10.1016/j.optmat.2014.11.007
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2015
    detail.hit.zdb_id: 1105129-2
    detail.hit.zdb_id: 2015659-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Biofunctionalized conductive polymers enable efficient CO 2 electroreduction
    American Association for the Advancement of Science (AAAS) ; 2017
    In:  Science Advances Vol. 3, No. 8 ( 2017-08-04)
    Details
    In: Science Advances, American Association for the Advancement of Science (AAAS), Vol. 3, No. 8 ( 2017-08-04)
    Abstract: Selective electrocatalysts are urgently needed for carbon dioxide (CO 2 ) reduction to replace fossil fuels with renewable fuels, thereby closing the carbon cycle. To date, noble metals have achieved the best performance in energy yield and faradaic efficiency and have recently reached impressive electrical-to-chemical power conversion efficiencies. However, the scarcity of precious metals makes the search for scalable, metal-free, CO 2 reduction reaction (CO 2 RR) catalysts all the more important. We report an all-organic, that is, metal-free, electrocatalyst that achieves impressive performance comparable to that of best-in-class Ag electrocatalysts. We hypothesized that polydopamine—a conjugated polymer whose structure incorporates hydrogen-bonded motifs found in enzymes—could offer the combination of efficient electrical conduction, together with rendered active catalytic sites, and potentially thereby enable CO 2 RR. Only by developing a vapor-phase polymerization of polydopamine were we able to combine the needed excellent conductivity with thin film–based processing. We achieve catalytic performance with geometric current densities of 18 mA cm −2 at 0.21 V overpotential (−0.86 V versus normal hydrogen electrode) for the electrosynthesis of C 1 species (carbon monoxide and formate) with continuous 16-hour operation at 〉 80% faradaic efficiency. Our catalyst exhibits lower overpotentials than state-of-the-art formate-selective metal electrocatalysts (for example, 0.5 V for Ag at 18 mA cm −1 ). The results confirm the value of exploiting hydrogen-bonded sequences as effective catalytic centers for renewable and cost-efficient industrial CO 2 RR applications.
    Type of Medium: Online Resource
    ISSN: 2375-2548
    URL: Article
    DOI: 10.1126/sciadv.1700686
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2017
    detail.hit.zdb_id: 2810933-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Photocatalytic Hydrogen Evolution by Oleic Acid-Capped CdS, CdSe, and CdS 0.75 Se 0.25 Alloy Nanocrystals
    Wiley ; 2014
    In:  ChemPhysChem Vol. 15, No. 13 ( 2014-09-15), p. 2668-2671
    Details
    In: ChemPhysChem, Wiley, Vol. 15, No. 13 ( 2014-09-15), p. 2668-2671
    Type of Medium: Online Resource
    ISSN: 1439-4235
    URL: Issue
    URL: Article
    DOI: 10.1002/cphc.v15.13
    DOI: 10.1002/cphc.201402229
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 2025223-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Penternary chalcogenides nanocrystals as catalytic materials for efficient counter electrodes in dye-synthesized solar cells
    Springer Science and Business Media LLC ; 2016
    In:  Scientific Reports Vol. 6, No. 1 ( 2016-07-06)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 6, No. 1 ( 2016-07-06)
    Abstract: The penternary chalcogenides Cu 2 CoSn(SeS) 4 and Cu 2 ZnSn(SeS) 4 were successfully synthesized by hot-injection method and employed as a catalytic materials for efficient counter electrodes in dye-synthesized solar cells (DSSCs). The structural, compositional, morphological and optical properties of these pentenary semiconductors were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive spectrometer (EDS) and ultraviolet-visible (UV–Vis) spectroscopy. The Cu 2 CoSn(SeS) 4 and Cu 2 ZnSn(SeS) 4 nanocrystals had a single crystalline, kesterite phase, adequate stoichiometric ratio, 18–25 nm particle sizes which are forming nanospheres and band gap energy of 1.18 and 1.45 eV, respectively. Furthermore, the electrochemical impedance spectroscopy and cyclic voltammograms indicated that Cu 2 CoSn(SeS) 4 nanocrystals as counter electrodes exhibited better electrocatalytic activity for the reduction of iodine/iodide electrolyte than that of Cu 2 ZnSn(SeS) 4 nanocrystals and conventional platinum (Pt). The photovoltaic results demonstrated that DSSC with a Cu 2 CoSn(SeS) 4 nanocrystals-based counter electrode achieved the best efficiency of 6.47%, which is higher than the same photoanode employing a Cu 2 ZnSn(SeS) 4 nanocrystals (3.18%) and Pt (5.41%) counter electrodes. These promising results highlight the potential application of penternary chalcogen Cu 2 CoSn(SeS) 4 nanocrystals in low-cost, high-efficiency, Pt-free DSSCs.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/srep29207
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 2615211-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Nanofibrous Inorganic Semiconductors in Electrocatalytic CO 2 Reduction
    The Electrochemical Society ; 2018
    In:  ECS Meeting Abstracts Vol. MA2018-03, No. 4 ( 2018-07-13), p. 272-272
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2018-03, No. 4 ( 2018-07-13), p. 272-272
    Abstract: The electrochemical carbon dioxide reduction reaction (CO 2 RR) is attractive in terms of resolving the ever-growing release of CO 2 from anthropogenic cause. Thereby, electrochemical CO 2 RR combines high energy-transfer yields and the refinement to versatile products such as C1- chemicals, which represent the concurrent carbon feedstock. Herein we explore the CO 2 reducing property of nanofibrous chalcopyrite copper indium sulfide CuInS 2 (CIS) and the pristine cobalt oxide (Co 3 O 4 ), both p-type semiconducting materials, towards CO production mainly with remarkable faradaic efficiencies of 77% and 65%, respectively [1]. The focus in our studies are given to the utilization of the nanofiber electrodes as an appropriate electrocatalyst for CO production without using further expensive metal supplements, e.g. palladium, platinum, and potassium. Thus, the nanocrystalline shaping of nanofiber networks was achieved by the low-cost, versatile and time-saving electrospinning technique. In order to reduce the imperfection in the crystalline fiber, Polyacrylonitrile (PAN) was selected as template polymer [2] . The desired chemical structure of nanofibers was achieved through sintering process at 500 °C and 550 °C, respectively. With reasonable product selectivity by CuInS 2 and pristine Co 3 O 4 nanofibers [3] and a stable operation at a constant electrolysis potential for many hours, we think that this work will stimulate more exploration into using nanofiber based materials in energy recovery and carbon capture and utilization technologies. [1] Aljabour A.; Coskun H.; Apaydin D.H.; Ozel F.; Hassel A.W.; Stadler P.; Sariciftci N.S.; Kus M.; Applied Catalysis B: Environmental; 229; 2018 ; 163–170. [2] Ozel F.; Kus, M.; Yar, A.; Arkan, E.; Yigit, M. Z; Aljabour, A.; Büyükcelebi, S.; Tozlu, C.; Ersoz M, Materials Letters . 2015 , 140, 23–26. [3] Aljabour A.; Apaydin D.H.; Halime Coskun, Ozel F.; Ersoz M.; Stadler P.; Sariciftci N.S.; Kus M.; ACS Appl. Mater. Interfaces 2016 , 8, 31695−31701.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2018-03/4/272
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2018
    detail.hit.zdb_id: 2438749-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Mimicking Noble Metals Using Hydrogen-Bonded Conducting Polymers for Electrocatalysis
    The Electrochemical Society ; 2020
    In:  ECS Meeting Abstracts Vol. MA2020-01, No. 46 ( 2020-05-01), p. 2654-2654
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2020-01, No. 46 ( 2020-05-01), p. 2654-2654
    Abstract: The most active and efficient catalysts for the electrochemical hydrogen evolution reaction rely on noble metals, a fact that increases the cost of producing hydrogen and thereby limits the widespread adoption of this fuel. Here we present metal-free polydopamine and polyguanine as selective organic hydrogen electrocatalysts 1–3 . The conducting functional polymers incorporate selective hydrogen-affine hydrogen bonds that possess a similar hydrogen binding energies and work function as e.g. platinum. We report the synthesis of hydrogen-selective electrocatalytic polyguanine and polydopamine and demonstrate the enhancement of the rate-determining step in the proton reduction. We further present mechanistic spectral IR-operando studies on the catalytic hydrogen bonded motifs as well as the continuous electrolysis to molecular hydrogen using polyguanine and polydopamine electrodes for several 100 hours without notable degradation. (1) Coskun, H.; Aljabour, A.; Schöfberger, W.; Hinterreiter, A.; Stifter, D.; Sariciftci, N. S.; Stadler, P. Cofunction of Protons as Dopant and Reactant Activate the Electrocatalytic Hydrogen Evolution in Emeraldine‐Polyguanine. Adv. Mater. Interfaces 2019, 1901364 DOI: 10.1002/admi.201901364. (2) Coskun, H.; Aljabour, A.; Uiberlacker, L.; Strobel, M.; Hild, S.; Cobet, C.; Farka, D.; Stadler, P.; Sariciftci, N. S. Chemical Vapor Deposition - Based Synthesis of Conductive Polydopamine Thin-Films. Thin Solid Films 2018, 645 (August 2017), 320–325 DOI: 10.1016/j.tsf.2017.10.063. (3) Coskun, H.; Aljabour, A.; Luna, P. De; Sun, H.; Nishiumi, N.; Yoshida, T.; Koller, G.; Ramsey, M. G.; Greunz, T.; Stifter, D.; Hassel, A. W.; Sariciftci, N. S.; Sargent, E. H.; Stadler, P. Hydrogen-Bonded Polymers Mimic Noble Metal Electrocatalysts. Adv. Mater., submitted .
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2020-01462654mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2020
    detail.hit.zdb_id: 2438749-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    Highly Stable Co3O4 Nanofibers in Alkaline Oxygen Evolution Reaction
    The Electrochemical Society ; 2021
    In:  ECS Meeting Abstracts Vol. MA2021-01, No. 50 ( 2021-05-30), p. 2068-2068
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2021-01, No. 50 ( 2021-05-30), p. 2068-2068
    Abstract: Electrocatalysis of hydrogen and oxygen evolution is an essential route in performing renewable and sustainable energy alternatives. Although hydrogen technologies are largely advanced, the oxygen electrochemistry is mainly limited due to the complexity in seeking suitable and stable electrocatalysts, in unifying electrolytic conditions and hence sluggish reaction kinetics. Herein, we demonstrate the electrocatalytic activity of the nanofibrous cobalt oxide in alkaline oxygen evolution reaction with a generous operation lifetime of 120 hours. The unique and facile preparation pathway of fibers by electrospinning allows enlarged electrode networking and nanofibrous interaction thus leading to extended catalytically active surface area, imperative for well-performing electrolysis. Operating at low overpotential of 293 mV at a current density of 10 mA cm - 2 , as well as low Tafel slope of 60.5 mVdec -1 in 1M KOH prove the efficient utilization of nanofibrous Co3O4 electrocatalyst towards oxygen evolution with an excellent long-term stability over 100 hours.[1] [1] A.A., Long-Lasting Electrospun Co3O4 Nanofibers for Electrocatalytic Oxygen Evolution Reaction, ChemistrySelect 2020, 5, 748, doi.org/10.1002/slct.20.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2021-01502068mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2021
    detail.hit.zdb_id: 2438749-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    Fabrication of quaternary Cu2FeSnS4 (CFTS) nanocrystalline fibers through electrospinning technique
    Springer Science and Business Media LLC ; 2015
    In:  Journal of Materials Science Vol. 50, No. 2 ( 2015-1), p. 777-783
    Details
    In: Journal of Materials Science, Springer Science and Business Media LLC, Vol. 50, No. 2 ( 2015-1), p. 777-783
    Type of Medium: Online Resource
    ISSN: 0022-2461 , 1573-4803
    URL: Article
    DOI: 10.1007/s10853-014-8637-x
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2015
    detail.hit.zdb_id: 2015305-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    2D Semi-Metallic TiS2 Electrocatalyst for CO2 Conversion
    The Electrochemical Society ; 2020
    In:  ECS Meeting Abstracts Vol. MA2020-01, No. 46 ( 2020-05-01), p. 2639-2639
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2020-01, No. 46 ( 2020-05-01), p. 2639-2639
    Abstract: Two-dimensional transition metal dichalcogenides (TMDCs) are the most efficient and selective electrocatalysts for the heterogenous CO 2 reduction to CO, along with MoS 2 , WS 2 , and their diselenides.[1, 2] Here we show CO electrosynthesis using atomic layer deposited TiS 2 with a maximum Faraday yield of 64 % at an overpotential of less than 0.4V at 5 mA cm -2 . We provide mechanistic insights on the electrosynthesis of C=O by the insitu ATR-FTIR spectroelectrochemistry. Operando studies reveal that the reason of high CO selectivity is due to the CO 2 binding on active disulfide planes. Paired with mild synthesis protocol, reasonable stability and low-cost production, semi-metallic TiS 2 promises satisfying applicability in CO 2 electroreduction and utilization technology. [1] P. Abbasi, M. Asadi, C. Liu, S. Sharifi-Asl, B. Sayahpour, A. Behranginia, P. Zapol, R. Shahbazian-Yassar, L.A. Curtiss, A. Salehi-Khojin, Tailoring the edge structure of molybdenum disulfide toward electrocatalytic reduction of carbon dioxide, ACS nano, 11 (2016) 453-460. [2] M. Asadi, K. Kim, C. Liu, A.V. Addepalli, P. Abbasi, P. Yasaei, P. Phillips, A. Behranginia, J.M. Cerrato, R. Haasch, P. Zapol, B. Kumar, R.F. Klie, J. Abiade, L.A. Curtiss, A. Salehi-Khojin, Nanostructured transition metal dichalcogenide electrocatalysts for CO 2 reduction in ionic liquid, Science, 353 (2016) 467-470.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2020-01462639mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2020
    detail.hit.zdb_id: 2438749-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 10
    Online Resource
    Online Resource
    Enhanced methane producing microbial electrolysis cells for wastewater treatment using poly(neutral red) and chitosan modified electrodes
    Royal Society of Chemistry (RSC) ; 2020
    In:  Sustainable Energy & Fuels Vol. 4, No. 8 ( 2020), p. 4238-4248
    Details
    In: Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 4, No. 8 ( 2020), p. 4238-4248
    Type of Medium: Online Resource
    ISSN: 2398-4902
    URL: Article
    DOI: 10.1039/D0SE00770F
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2020
    detail.hit.zdb_id: 2882651-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...