Copyright © 2015 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
- Facile Synthesis of Hollow Mesoporous CoFe2O4 Nanospheres and Graphene Composites as High-Performance Anode Materials for Lithium-Ion Batteries
Yucheng Dong, Ying-San Chui, Xia Yang, Ruguang Ma, Prof. Jong-Min Lee and Prof. Juan Antonio Zapien
Article first published online: 17 APR 2015 | DOI: 10.1002/celc.201500046
A new blend of CoFe: A novel, facile, and graphene-oxide-assisted self-assembly approach is developed to synthesize CoFe2O4–graphene composites. The oxygen-containing functional groups and defect sites on graphene act as nucleation centers for gas bubbles, at which CoFe2O4 crystallites aggregate to form nanospheres. The resulting composites exhibit excellent electrochemical performance as high-performance anode materials for lithium-ion batteries.
- High-Capacity NiO–(Mesocarbon Microbeads) Conversion Anode for Lithium-Ion Battery
Roberta Verrelli and Dr. Jusef Hassoun
Article first published online: 17 APR 2015 | DOI: 10.1002/celc.201500069
This beads well: A NiO–MCMB high capacity composite anode is characterized and efficiently employed in a full lithium-ion battery using a high-voltage LiNi0.5Mn1.5O4 cathode.
- Ternary Transition Metal Oxide Nanoparticles with Spinel Structure for the Oxygen Reduction Reaction
Rou Jun Toh, Alex Yong Sheng Eng, Prof. Zdenek Sofer, Prof. David Sedmidubsky and Prof. Martin Pumera
Article first published online: 17 APR 2015 | DOI: 10.1002/celc.201500070
In a spin-el: Mixed-valence transition-metal oxides with a spinel structure are explored as electrocatalysts for the oxygen reduction reaction (ORR). Four different types of spinel oxide nanocrystals (NiCo2O4, NiMn2O4, ZnCo2O4, and ZnMn2O4) are investigated to determine the influence of the transition metal on the ORR performance.
- Aqueous Rechargeable Battery Based on Zinc and a Composite of LiNi1/3Co1/3Mn1/3O2
Faxing Wang, Yu Liu, Xiaowei Wang, Zheng Chang, Prof. Yuping Wu and Prof. Rudolf Holze
Article first published online: 17 APR 2015 | DOI: 10.1002/celc.201500033
Kicking up a zinc: An aqueous rechargeable battery is assembled by using metallic zinc and a 1D, rod-shaped LiNi1/3Co1/3Mn1/3O2@graph- ene@MWCNT composite as the negative and positive electrodes, respectively. The battery has a high working voltage, satisfactory rate capability, as well as good cycling performance.
- Benefits of Chromium Substitution in Na3V2(PO4)3 as a Potential Candidate for Sodium-Ion Batteries
Dr. María J. Aragón, Dr. Pedro Lavela, Dr. Gregorio F. Ortiz and Prof. José L. Tirado
Article first published online: 15 APR 2015 | DOI: 10.1002/celc.201500052
Tactical substitution: Chromium substitution in Na3V2-xCrx(PO4)3 reveals the activity of the V5+/V4+ redox couple at high voltage. Na3V1.9Cr0.1(PO4)3 exhibits a good performance as a cathode in sodium cells. The excellent behavior is correlated to the good kinetic response, as evidenced by the low charge-transfer resistance and high diffusion coefficient.