© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
October 15, 2014
VIP: Non-Invasive Probing of Nanoparticle Electrostatics
Dr. Kristina Tschulik, Dr. Wei Cheng, Dr. Christopher Batchelor-McAuley, Stuart Murphy, Dr. Dario Omanović and Prof. Dr. Richard G. Compton
Not what you might think: A new and non-invasive technique to probe the electrostatic interaction between surface-charged nanoparticles and a charged metal/solution interface shows that electrostatic effects are insignificant in all but very dilute electrolytes.
Recently Published Articles
- Nature of the Intermediate Binding Sites in Hydrogen Oxidation/Evolution over Pt in Alkaline and Acidic Media
Prof. David E. Ramaker and Prof. Christina Roth
Article first published online: 24 JUN 2015 | DOI: 10.1002/celc.201500111
What potential! Intermediate coverage during the hydrogen oxidation/evolution reaction is determined from the Δμ X-ray absorption near-edge structure at potentials above 0.0 V and from previously reported cyclic voltammetry impedance data at potentials below 0 V on Pt surfaces. A rearrangement of overpotential deposited hydrogen (Hopd) from the ontop sites at the corners/edges of nanoparticles (green; see figure) to the delocalized threefold face sites (red) at higher Hopd coverage is found.
- Reconstruction of Pyrolyzed Bacterial Cellulose (PBC)-Based Three-Dimensional Conductive Network for Silicon Lithium Battery Anodes
Prof. Yanhong Chang, Min Zhou, Prof. Xianglong Li, Yunbo Zhang and Prof. Linjie Zhi
Article first published online: 24 JUN 2015 | DOI: 10.1002/celc.201500204
Hybrid electrodes: A chopping strategy has been developed for the sustainable synthesis of silicon nanoparticle impregnated pyrolyzed bacterial cellulose (PBC) to demonstrate the potential of a reconstructed PBC-based three-dimensional conductive network as an electrode framework (see figure).
- Optical Visualization and Spectroscopic Techniques for Probing Water Transport in a Polymer Electrolyte Fuel Cell
Prof. Kosuke Nishida
Article first published online: 24 JUN 2015 | DOI: 10.1002/celc.201500135
Fuel cell diagnostics: Optical visualization and laser spectroscopic techniques for investigating in situ water transport in operating polymer electrolyte fuel cells (PEFCs) are presented. The dynamic behavior of liquid water droplets in cathode electrodes and gas channels can be conveniently observed using transparent fuel cells. Noninvasive measurements of water vapor distribution in PEFC channels can be made using tunable diode laser absorption spectroscopy.
- Ion-Transfer Voltammetry at the Interface between Organic and Salt-Doped Ice Phases
Dr. Hui Qu, Dr. Makoto Harada and Prof. Tetsuo Okada
Article first published online: 23 JUN 2015 | DOI: 10.1002/celc.201500181
Ice, ice, baby: Ion-transfer voltammetry at the interface between frozen aqueous NaCl and an organic phase is measured with a simple and versatile method to study the hydration of ions in the liquid phase coexistent with ice.
- Mesoporous Manganese Sulfide Spheres Anchored on Graphene Sheets as High-Capacity and Long-Life Anode Materials for Lithium-Ion Batteries
Dr. Dezhi Chen, Hongying Quan, Zhongning Huang and Prof. Lin Guo
Article first published online: 18 JUN 2015 | DOI: 10.1002/celc.201500171
Composite artist: A novel porous manganese sulfide/graphene composite is prepared by using a simple in situ solvothermal approach; this composite exhibits a high Li-ion storage capacity and excellent cycling stability as an anode material for lithium-ion batteries.