Advanced Functional Materials
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Materials Science Weekly Newsletter
Recently Published Articles
- Toward Full Exposure of ‘Active Sites’: Nanocarbon Electrocatalyst with Surface Enriched Nitrogen for Superior Oxygen Reduction and Evolution Reactivity
Gui-Li Tian, Qiang Zhang, Bingsen Zhang, Yu-Guang Jin, Jia-Qi Huang, Dang Sheng Su and Fei Wei
Article first published online: 25 JUL 2014 | DOI: 10.1002/adfm.201401264
Nitrogen-doped coaxial carbon nanocables with most of the active sites fully exposed on the surface are developed. The accessible and efficient utilization of the integrated N atoms enriched on the surface combined with the undestroyed intact inner walls afford the nanocarbon electrocatalysts with much enhanced electrocatalytic activity for both oxygen reduction and evolution reaction.
- An Easily Sintered, Chemically Stable, Barium Zirconate-Based Proton Conductor for High-Performance Proton-Conducting Solid Oxide Fuel Cells
Wenping Sun, Zhen Shi, Mingfei Liu, Lei Bi and Wei Liu
Article first published online: 25 JUL 2014 | DOI: 10.1002/adfm.201401478
An easily sintered and chemically stable proton conductor BaZr0.8Y0.15In0.05O3–δ is developed. The fuel cell with a 12-μm-thick BaZr0.8Y0.15In0.05O3-δ electrolyte film delivers a peak power density of as high as 379 mW cm−2 at 700 °C. The result demonstrates that Y and In co-doping is an effective strategy for exploring sintering active and chemically stable BaZrO3-based proton conductors for high performance proton-conducting solid oxide fuel cells.
- Bio-Inspired All-Organic Soft Actuator Based on a π–π Stacked 3D Ionic Network Membrane and Ultra-Fast Solution Processing
Ravi Kumar Cheedarala, Jin-Han Jeon, Chang-Doo Kee and Il-Kwon Oh
Article first published online: 25 JUL 2014 | DOI: 10.1002/adfm.201401136
This article describes the construction of π–π stacked alternate hydrophilic-hydrophobic nanochannels inside a sulfonated polyimide membrane. Atomic level regio-specific interaction of cations and anions in an ionic liquid with hydrophilic-hydrophobic co-blocks of a sulfonated polyimide block copolymer (SPI) matrix is utilized for constructing a self-assembled 3D networked polymer with continuous and interconnected ion transport nanochannels for high-performance bio-inspired all-organic soft actuators.
- A Solution-Processed UV-Sensitive Photodiode Produced Using a New Silicon Nanocrystal Ink
Tao Lin, Xin Liu, Bin Zhou, Zhiyong Zhan, Alexander N. Cartwright and Mark T. Swihart
Article first published online: 25 JUL 2014 | DOI: 10.1002/adfm.201400600
A new nanoink consisting of silicon nanocrystals capped with short allyl disulfide ligands, dispersed in allyl disulfide, is used to fabricate a single-Schottky-junction photodiode by solution-phase processing in air. The unpackaged photodiode exhibits a peak photoresponse of 0.02 A W−1 to UV light in air, within an order of magnitude of the response of commercially available photodetectors.
- Three-Dimensional Silver Nanoparticle Formation Using Femtosecond Laser Irradiation in Phosphate Glasses: Analogy with Photography
N. Marquestaut, Y. Petit, A. Royon, P. Mounaix, T. Cardinal and L. Canioni
Article first published online: 24 JUL 2014 | DOI: 10.1002/adfm.201401103
This first true 3D-patterning of nanocomposite materials is achieved in silver-containing zinc-phosphate glasses. In a first step, silver clusters are structured in space by means of a near-infrared femtosecond laser. A subsequent thermal treatment allows the space-selective growth of silver nanoparticles. This direct approach opens new routes towards the processing of plasmonic devices for sensing, photonics, and metamaterials applications.