Results 121 to 130 of about 6,074,292 (203)

Cobalt-Catalyzed Cyclization/Hydroboration of 1,6-Diynes with Pinacolborane

, 2019
Herein, we report a protocol for cyclization/hydroboration of 1,6-diynes with pinacolborane using a cobalt catalyst generated in situ from a Co­(II)–phenanthroline complex, tetrabutylammonium fluoride, and pinacolborane.
Qiang Huang (43791), Meng-Yang Hu (6439358), Shou-Fei Zhu (1630648)   +2 more
core   +1 more source

Ru‐Doping‐Engineered Oxygen Vacancies in MoO3‐x Nanostructured Films With Ultrahigh Capacitance for Flexible Asymmetric Supercapacitors

Advanced Science, EarlyView.
Ru‐doping‐induced defect engineering enables freestanding Ru–MoO3‐x flexible films with enriched oxygen vacancies, modulated band structure, and enhanced charge transport. The optimized electrode delivers ultrahigh capacitance approaching the theoretical limit of MoO3, while assembled asymmetric supercapacitors exhibit high energy density, wide‐voltage
Xiaoqing Bin, Minhao Sheng, Norman C.‐R. Chen, Xiangyang Liu, Yingji Zhao, Yingyi Liao, Wenxiu Que, Yusuke Asakura, Yusuke Yamauchi   +8 more
wiley   +1 more source

Cobalt-Catalyzed C(sp²)–H Borylation with an Air-Stable, Readily Prepared Terpyridine Cobalt(II) Bis(acetate) Precatalyst

, 2016
A bench-stable, 4-aryl-substituted terpyridine supported, high-spin cobalt­(II) bis­(acetate) complex, (ArTpy)­Co­(OAc)2 (ArTpy = 4′-(4-N,N′-dimethylaminophenyl)-2,2′:6′,2″-terpyridine), is active for the C­(sp2)–H borylation of arenes and heteroarenes ...
Máté J. Bezdek (1980178), Nadia G. Léonard (3217272), Paul J. Chirik (1311855)   +2 more
core   +1 more source

TiO6 as a Compensatory Structural Unit in Co‐Free, High‐Ni Layered Oxide for Durable Lithium‐Ion Batteries

Advanced Science, EarlyView.
Ti substitution stabilizes Co‐free high‐Ni layered oxides through both structural and electronic effects. TiO6 octahedra act as compensatory structural units that help interrupt cooperative Jahn–Teller distortion and suppress detrimental phase transitions, while the electron‐withdrawing inductive effect of Ti stabilizes the oxygen lattice. As a result,
Bixian Ying, Zhenjie Teng, Jun Wang, Honghong Tian, Charlotte von Petersdorff‐Campen, Rommel T. Tolla, Iuliia Mikulska, Linus Voigt, Sascha Nowak, Verena Naber, Alexander Schökel, Yuanming Liu, Michael Merz, Peter Nagel, Stefan Schuppler, Katja Frenzel, Adrian Jonas, Lena Mathies, Martin Winter, Karin Kleiner   +19 more
wiley   +1 more source

Magnetoelectric BaTiO3/CoFe2O4 Thin‐Film Meshes for Neuronal Differentiation

Advanced Science, EarlyView.
We engineer an epitaxial BaTiO3/CoFe2O4 magnetoelectric mesh that overcomes boundary‐induced mechanical clamping. Progressively reducing the mechanical constraint, from substrate‐clamped to PDMS‐transferred and ultimately freestanding, enhances magnetic‐to‐electric transduction and strengthens magnetoelectric coupling.
Mathieu Mirjolet, Hao Ye, Abderrahim Lahlahi Attalhaoui, Donghoon Kim, Vitaly Pustovalov, Elric Zhang, Marc Tudela‐Pi, Bastian Gebauer, Juan Bautista Carda Castelló, Anton Guimerà‐Brunet, Josep Puigmartí‐Luis, Xiang‐Zhong Chen, Minsoo Kim, Salvador Pané   +13 more
wiley   +1 more source

Effect of iron(II) and manganese(II) on oxidation and co-precipitation of cobalt(II) in ammonia/ammonium carbonate solutions during aeration - An update and insight to cobalt losses in the Caron process for laterite ores [PDF]

, 2018
The Caron process involves the roasting of nickel laterite ore at 750 °C with fuel oil to produce a calcine containing Fe-Ni-Co alloy and other reacted or unreacted host minerals.
Thompson, G., Senanayake, G.
core  

Stabilising the Lattice Oxygen Oxidation Mechanism Through Iridium Single Atoms in Chromium‐Doped Cobalt Iron Layered Double Hydroxides

Advanced Science, EarlyView.
Iridium single atoms and Cr doping synergistically activate and stabilise the lattice oxygen oxidation mechanism in CoFe layered double hydroxides. Electronic modulation enhances metal–oxygen covalency, suppresses over‐oxidation, and enables durable oxygen evolution, delivering high‐performance anion exchange membrane water electrolysis with ...
Parisa Eskandari, Shujie Zhou, Jodie Yuwono, Yufei Zhao, Hanyu Xu, Zhihong Tian, Jingwen Ba, Ming Zhang, Bernt Johannessen, Thanh Son Bui, Richard F. Webster, Jing Chu, Xunyu Lu, Rose Amal   +13 more
wiley   +1 more source

Cobalt(II) removal from synthetic wastewater by adsorption on South African coal fly ash

South African Journal of Science, 2010
Advanced wastewater-treatment techniques such as adsorption are essential in the removal of non- biodegradable toxic wastes from water. In this study, the use of South African coal fly ash, an industrial byproduct, has been investigated as a potential ...
Evans Musapatika, Maurice Onyango, Ochieng Aoyi   +2 more
doaj  

Dynamic Cobalt Leaching‐Redeposition Equilibrium in Co9S8/Co‐Ni3S2 Electrocatalysts Boosts Oxygen Evolution Activity

Advanced Science, EarlyView.
Reconstruction of a Co9S8/Co‐Ni3S2 electrocatalyst stabilizes via a leaching‐redeposition dynamic equilibrium of metal ions. Interestingly, the Co‐ion leaching and redeposition play a crucial role in boosting oxygen evolution performance. This endogenous self‐repair cycle continuously offers active sites, allowing the catalyst to maintain superior OER ...
Xue‐Min Chen, Meng‐Ya Zhao, Xiu‐Li Zhao, Hui‐Ying Mu, Yue Zhou, Dong‐Ya Ma, Fa‐Tang Li   +6 more
wiley   +1 more source

Universal Battery Capacity Degradation Forecasting Driven by Foundation Models Across Diverse Chemistries and Conditions

Advanced Science, EarlyView.
A unified time‐series forecasting framework learns transferable battery capacity‐degradation patterns from 20 heterogeneous datasets spanning chemistries, formats, temperatures, and cycling conditions. A single model delivers competitive predictions on both known and previously unseen datasets, while physics‐guided representation learning improves ...
Joey Chan, Huan Wang, Zhen Chen, Haoyu Pan, Wei Wu, Zirong Wang, Ershun Pan, Min Xie, Lifeng Xi   +8 more
wiley   +1 more source