Results 51 to 60 of about 55,122 (221)

Active Phase of Nickel Electrocatalysts Driving Alkaline Hydrogen Evolution

Advanced Materials, EarlyView.
Using depth‐resolved and operando spectroscopic measurements coupled with electrochemical mass spectrometry, the authors uncover the critical role of sub‐surface oxidised species in increasing the activity and durability of Ni‐based cathodes for hydrogen evolution.
Yifeng Wang, Eleanor Ender, Santosh Kumar, Cindy Tseng, Guangmeimei Yang, Boxi Ye, Caiwu Liang, Youli Yu, Norton West, Inderjeet Chauhan, Jun H. Ng, Sid Halder, Sang Gu Ji, Georg Held, Mary P. Ryan, Katie L. Moore, Alex S. Walton, Reshma R. Rao   +17 more
wiley   +1 more source

OER – Auf dem Weg in eine selbstverschuldete digitale Unmündigkeit?

MedienPädagogik: Zeitschrift für Theorie und Praxis der Medienbildung, 2018
Spätestens seit der Debatte um die Vergütung von urheberrechtlich geschütztem Material nach UrhG §52a, scheinen Open Educational Resources (OER) die Antwort auf proprietäre Verlagsangebote zu sein.
Christopher Könitz
doaj   +1 more source

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

Advanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu, Fan Yang, Deep M. Patel, Mohammad Albloushi, Qiqi Mao, Shan Jiang, Christian J. Breckner, Connor W. Schroeder, Ruoyu Cui, Tao Ma, Dapeng Jing, Wenyu Huang, Jeffrey T. Miller, Wenzhen Li, Luke T. Roling, Yue Wu   +15 more
wiley   +1 more source

Faust / Theoblad von Oer [PDF]

, 1880
FAUST / THEOBLAD VON OER Faust / Theoblad von Oer (1) Faust ...
Oer, Theobald
core  

Grain-Boundary-Enriched Cocatalyst Coupled With CuSCN Hole Transport Layer for Efficient Solar Water Oxidation in BiVO₄ Photoanode. [PDF]

Adv Sci (Weinh)
A grain‐boundary‐enriched NiFe cocatalyst is coupled with a CuSCN hole transport layer on BiVO4 photoanodes. The integrated architecture promotes hole extraction, interfacial charge transfer, and surface OER kinetics, highlighting cocatalyst microstructure regulation as a complementary strategy to hole transport layer engineering. ABSTRACT Solar‐driven
Zhao W, He Y, Wang X, Zhu L, Su T, Zhou Y, Li X, Du P, Lu X.   +8 more
europepmc   +2 more sources

Lattice Strain and Built‐In Field Synergistically Boost Urea Oxidation via Dynamic NiOOH Mediation at Multiphase Heterointerfaces

Advanced Materials, EarlyView.
A sulfur‐doped lignin‐derived carbon‐coated Ni‐NiO‐MoO2 nanorod array was synthesized, exhibiting enhanced UOR performance ‐ due to lattice‐strain and built‐in electric field effects by multiphase heterogeneous interface in Ni‐NiO‐MoO2@SC, excellent corrosion resistance, mass‐transport ability, and long‐term stability (500 mA cm−2 at 1.53 V for 500 h ...
Jiawei Li, Liancen Li, Guangfu Qian, Zishan Cai, Yiping Cao, Yihao Xu, Ruyu Zhang, Jinli Chen, Changzhou Chen, Panagiotis Tsiakaras   +9 more
wiley   +1 more source

The OER debate, in Full

, 2011
Debate realizado en la comunidad OER de la UNESCO, mediante la plataforma WSIS, alrededor de la pregunta: ¿Debería el movimiento OER favorecer el uso comercial?Debate in the UNESCO OER community through WSIS platform, around the question: should OER ...
Downes, Stephen
core  

An OER online course remixing experience [PDF]

, 2015
This paper describes the authors’ experience of remixing two existing OER courses to provide an OER course for a particular purpose and context. The developing country target environment is stated as well as the original resources’ provenance.
Greig Emil Krull, Brenda Justine Mallinson, Mallinson, Brenda Justine, Krull, Greig Emil   +3 more
core   +1 more source

Mary Lou Forward-International OER Initiatives: OER Community Conversations

, 2010
OER is a wide term, encompassing different concepts. Many people appreciated Steve Carson's description of different roles that OER can fill as summarized by Thomas Pfeffer: OER as a substitute, OER as a reusable resource, OER as transparency, and OER ...
UNESCO Chair, OER Community; Athabasca University, Canada
core   +2 more sources

On the Efficacy of Open Educational Resources

International Review of Research in Open and Distributed Learning, 2019
Open educational resources (OER), which are free and openly licensed educational materials, have been a widely discussed topic in response to high textbook costs, the need for more pedagogical flexibility, and inequality in access to educational ...
Huimei Delgado, Michael Delgado, John Hilton III   +2 more
doaj   +1 more source