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| 1 | Electrochemical top-down synthesis of C-supported Pt nanoparticles with controllable shape and size:Mechanistic insights and application显示文摘In this work,we demonstrate the power of a simple top-down electrochemical erosion approach to obtain Pt nanoparticle with controlled shapes and sizes(in the range from-2 to-10 nm).Carbon supported nanoparticles with narrow size distributions have been synthesized by applying an alternating voltage to macroscopic bulk platinum structures,such as disks or wires.Without using any surfactants,the size and shape of the particles can be changed by adjusting simple parameters such as the applied potential,frequency and electrolyte composition.For instance,application of a sinusoidal AC voltage with lower frequencies results in cubic nanoparticles;whereas higher frequencies lead to predominantly spherical nanoparticles.On the other hand,the amplitude of the,sinusoidal signal was found to affect the particle size;the lower the amplitude of the applied AC signal,the smaller the resulting particle size.Pt/C catalysts prepared by this approach showed 0.76 A/mg mass activity towards the oxygen reduction reaction which is-2 times higher than the state-of-the-art commercial Pt/C catalyst(0.42 A/mg)from Tanaka.In addition to this,we discussed the mechanistic insights about the nanoparticle formation pathways. | Batyr Garlyyev Sebastian Watzele Johannes Fichtner Jan Michalicka Alexander Schokel Anatoliy Senyshyn Andrea Perego Dingjie Pan Hany A.El-Sayed Jan M.Macak Plamen Atanassov Iryna V.Zenyuk Aliaksandr S.Bandarenka | 2021 | Nano Research2021,14,8: | 2 |
| 2 | Perspective on ultramicroporous carbon as sulphur host for Li-S batteries显示文摘Lithium-sulphur(Li-S)batteries are currently considered as next-generation battery technology.Sulphur is an attractive positive electrode for lithium metal batteries,mainly due to its high capacity(1675 m Ah g^(-1))and high specific energy(2600 Wh kg^(-1)).The electrochemical reaction of lithium with sulphur in non-aqueous electrolytes results in the formation of electrolyte soluble intermediate lithium-polysulphides.The dissolved polysulphides shuttle to the anode and get reduced at the anode resulting in Li metal corrosion.The solubility of polysulphide gradually reduces the amount of sulphur in the cathode,thereby limiting the cycle life of Li-S batteries.Several strategies have been proposed to improve the cycling stability of Li-S batteries.A unique approach to eliminate the polysulphide shuttle is to use ultramicroporous carbon(UMC)as a host for sulphur.The pore size of UMC which is below 7A,is the bottleneck for carbonate solvents to access sulphur/polysulphides confined in the pores,thereby preventing the polysulphide dissolution.This perspective article will emphasise the role of UMC host in directing the lithiation mechanism of sulphur and in inhibiting polysulphide dissolution,including the resulting parasitic reaction on the lithium anode.Further,the challenges that need to be addressed by UMC-S based Li-S batteries,and the strategies to realise high power density,high Coulombic efficiency,and resilient Li-S batteries will be discussed. | Helen Maria Joseph Maximilian Fichtner Anji Reddy Munnangi | 2021 | Journal of Energy Chemistry2021,30,8: | 2 |
| 3 | Treatment of murine Th1and Th2-mediated inflammatory bowel disease with NF-kappa B decoy oligonueleotides显示文摘 | Fichtner FS Fuss LJ Preiss JC | 2005 | J Clin Invest2005,115,11: | 1 |
| 4 | Nanocrystalline aluminium hydrides for hydrogen storage显示文摘 | Maximilian Fichtner Jens Engel Olaf Fuhr | 2004 | Mater Sci Eng2004,108,: | 1 |
| 5 | Infectious hematopoiet-ic necrosis virus:monophyletic origin of European isolates from North A-merican genogroup M显示文摘 | ENZMANN P J KURATH G FICHTNER D | 2005 | Dis Aquat Organ2005,66,3: | 1 |
| 6 | Analysis of lateral DMOS power devices under ESD stress conditions显示文摘 | MERGENS M P J WILKENING W METTLER S WOLF H SRICKER A FICHTNER W | 2000 | IEEE Transactions on Electron Devices2000,47,11: | 1 |
| 7 | Heliopause explorera sailcraft mission to the outer boundaries of' solar system显示文摘 | Leipold M Fichtner H Heber B | 2006 | Acta Astronautica2006,59,811: | 1 |
| 8 | Nephron sparing surgery for central renal tumors:experience with 33cases显示文摘 | Black P Filipas D Fichtner J | 2000 | J Urol2000,163,3: | 1 |
| 9 | Long term results of internal urethrotomy显示文摘 | ALBERS P FICHTNER J BRUHL P | 1996 | J Urol1996,156,5: | 1 |
| 10 | Efficacy of silver-bearing external ventricular drainage catheters: a retrospective analysis显示文摘 | Fichtner J Guresir E Seifert V | 2010 | J Neurosug2010,112,4: | 1 |
| 11 | Efficacy of silver-bearing exter-nal ventricular drainage catheters:a retrospective analysis显示文摘 | Fichtner J Güresir E Seifert V | | 0,,04: | 1 |
| 12 | Establishment of patient-derived non-small cell lung cancer xenografts as models for the identification of predictive biomarkers显示文摘 | Fichtner I Rolff J Soong R | 2008 | Clin Cancer Res2008,4,20: | 1 |
| 13 | Single-electron device aimulation显示文摘 | Schenk A Wolfgang Fichtner | 2000 | IEEE Trans Electron Devices2000,47,10: | 1 |
| 14 | Nephron-sparing surgery of renal cell carcinoma with a normal opposite kidney: long-term outcome in 180 patients显示文摘 | Dragana Filipas Jan Fichtner Claudia Spix Peter Black Wolfgang Carus Rudolf Hohenfellner Joachim W Thüroff | 2000 | Urology2000,,3: | 1 |
| 15 | Nanotechnologieal aspects in materials for hydrogen storage显示文摘 | FICHTNER M | 2005 | Adv Eng Mater2005,7,6: | 1 |
| 16 | Lifetime prediction and design of reliability tests for high-power devices in automotive applications 显示文摘 | CIAPPA M CARBGNANI F FICHTNER W | 2003 | IEEE Transactions on Materials Reliability2003,3,4: | 1 |
| 17 | Simultaneous determination of Cyanobacterial hepato-and neurotoxins in water samples by ion-pair supported enrichment and HPLC-ESI-MS- MS 显示文摘 | Pietsch J Fichtner S Imhof L | 2001 | Chromatographia2001,54,: | 1 |
| 18 | Gabap- entin as add-on therapy in children with refractory partial seizures : A 12w,multicentre, double-blind, placebo-controlled study 显示文摘 | Richard Appleton Klaus Fichtner Linda LaMoreaux | 1999 | Epi- lepsia1999,40,8: | 1 |
| 19 | The impact of decreased Rubisco on photosynthesis,growth,allocation and storage in tobacco plants which have been transformed with antisense Rbcs显示文摘 | Quick W P Schurr U Fichtner K | 1991 | Plant J1991,1,: | 1 |
| 20 | The use of imidazolium ionic liquids for the formation and stabilization of Ir^0 and Rh^0 nanoparticles: efficient catalysts for the hydrogenation of arenes显示文摘 | Fonseca G S Umpierre A P Fichtner P F P | 2003 | Chemistry-A European Journal2003,9,: | 1 |