Results 131 to 140 of about 47,646 (303)

Particle‐Level ZrO2 Atomic Layer Deposition Enables Fast‐Cycling and Long‐Life Graphite Cathodes for Dual‐Ion Batteries

Advanced Functional Materials, EarlyView.
A spatial location of atomic layer deposition (ALD)‐derived ZrO2 coatings is demonstrated to be a critical design parameter for stabilizing graphite cathodes in DIBs. Direct particle‐level ALD (PALD) screening of representative metal oxides identified ZrO2 as the coating that provides the most favorable balance of high‐rate capability and interfacial ...
Jieun Kang, Sung Eun Jo, Yunah Ji, Dongjoo Kim, Sungho Kim, Jaegeon Ryu, Jihwan An, Soojin Park   +7 more
wiley   +1 more source

Development of alternative cathodes for intermediate temperature solid oxide fuel cells [PDF]

, 2009
textMaterials Science and ...
Kim, Junghyun
core  

Engineering a Fluorinated AlPO4 Interface: Toward High Initial Coulombic Efficiency and Stable Oxygen Redox in Li‐Rich Layered Oxide Cathodes

Advanced Functional Materials, EarlyView.
We report a chemically incorporated fluorinated AlPO4 (AlPO4‐F) architecture that functions as a multifunctional “interfacial fortress” for Li‐rich layered oxides (LLOs). By modulating the surface potential to –32.16 mV, this architecture enriches Li+ concentration and repels detrimental electrolyte anions.
Hojun Moon, Harim Jeong, Younghwon Kim, Buseong Kim, Geunhyeong Kim, Suyeon Lee, Jeongjin Lee, Joonwoo Kim, Jemin Lee, Youngsoo Kim, Young‐Il Kim, Dae Won Cho, Jeeyoung Yoo, Misook Kang   +13 more
wiley   +1 more source

Mechanistic Origins of Chemo‐Mechanical Instability and Failure in Solid‐State Lithium‐Sulfur Electrodes

Advanced Functional Materials, EarlyView.
Conversion‐induced sulfur expansion generates strong mechanical constraints and localized stresses within solid‐state Li‐S cathodes. Heterogeneous solid‐electrolyte confinement creates tensile strain‐energy hotspots that govern particle cracking. Larger sulfur particles accelerate fracture, while higher porosity relaxes constraint and delays damage ...
Arpan K. Sharma, Ahmad Ahmad, Bairav S. Vishnugopi, Partha P. Mukherjee   +3 more
wiley   +1 more source

Magneto‐Ionic Devices With Polymer‐Based Electrolytes

Advanced Functional Materials, EarlyView.
Polymer electrolytes are introduced for magneto‐ionic devices based on hydroxide and hydrogen ions. The magneto‐ionic effect results in a pronounced voltage‐controlled variation of coercivity in both devices. The switching speed is in the range of 100 ms.
Markus Gößler, Richard Weber, Michael Sommer, Karin Leistner   +3 more
wiley   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

Advanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa, Frank Kaulfuß, Stefan Makowski, Volker Weihnacht   +3 more
wiley   +1 more source

Influencia de la síntesis y del grado de dopaje en las propiedades morfológicas, estructurales y electroquímicas de óxidos LiCo_1‑xM_xO₂ (M = Ni, Al, Mg)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
In this work we have prepared, by a sol‑gel method, LiCo1‑ xMxO2 compounds (M= Ni, Al and Mg), in order to study the doping effect in their electrochemical behaviour as cathodes in lithium‑batteries.
Castro‑Couceiro, A., Senarís‑Rodríguez, M. A., Castro‑García, S., Julien, C.   +3 more
doaj  

Managing Charge Transport and Exciton Generation for Highly Efficient, Bright, and Stable Near‐Infrared Organic Radical Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
High‐performing near‐infrared (NIR) organic light‐emitting diodes are demonstrated using an efficient and stable 800 nm‐emissive organic radical and a thermally activated delayed fluorescence (TADF) host. TADF‐assisted exciton generation combined with improved charge transport enables high external quantum efficiency (>8%), high radiance (>70,000 mW sr−
Hwan‐Hee Cho, Min‐Hsuan Chang, Yi‐Syun Chen, Tetsuro Kusamoto, Emrys W. Evans, Yuh‐Renn Wu, Richard H. Friend   +6 more
wiley   +1 more source

Oxygen Evolution Electrocatalysts with Trinuclear, Mixed‐Valence Iron Motifs on Electronically Aligned Carbon Dots

Advanced Functional Materials, EarlyView.
Trinuclear iron oxo‐bridged catalytic ensembles stabilized by aspartic‐acid‐derived carbon dots provide an effective platform for alkaline oxygen evolution. Mixed‐valence charge balancing, inner‐sphere charge transport, and work‐function alignment within the N/O‐rich carbon framework promote cooperative Fe‐site chemistry and efficient OER ...
Megha A. Deshmukh, Giorgio Zoppellaro, Emiliano Fonda, Lukáš Zdražil, Shounik Paul, David Panáček, Hanuman Thorat, Zdeněk Badura, Michele Melchionna, Manuela Bevilacqua, Paolo Fornasiero, Klaus Müllen, Radek Zbořil, Aristides Bakandritsos   +13 more
wiley   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

Advanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao, Ilayda Namli, Joseph Christakiran Moses, Youdi Liu, Suihong Liu, Syed Hasan Askari Rizvi, Yasar Ozer Yilmaz, Ibrahim T. Ozbolat   +7 more
wiley   +1 more source