Results 131 to 140 of about 5,714 (305)

Upcycling Water Pollutants Into Long‐Chain Polymers via Synergistic Interfacial Dechlorination and Organic Radical Stabilization

Angewandte Chemie, EarlyView.
HEO‐regulated electronic structure drives nonradical PI activation, promoting ETP‐mediated polymerization of 4CP into high‐molecular‐weight products with enhanced surface enrichment. Concurrent dechlorination occurs via radical coupling and •OHads attack, enabling efficient carbon retention and selective product evolution at the liquid–solid interface.
Ziwei Yao, Yidi Chen, Penghui Shao, Jian Liu, Xiaodan Wang, Kunsheng Hu, Xubiao Luo, Nanqi Ren, Xiaoguang Duan   +8 more
wiley   +2 more sources

Electrical Effects of Ionic Deficient Cubic Ferrite Spinels: A Case Study on MgFe2O4

Advanced Physics Research
Electron transport via indirect exchange interactions between octahedral sites in spinels is affected by cationic or anionic vacancies. Thus, the deviation of the electron hopping mechanism is investigated, from a constant energy barrier toward a ...
Farshad Farshidfar, Hannah Oreskovic, Dominic H. Ryan, Khashayar Ghandi   +3 more
doaj   +1 more source

Advances in spinel-type electrocatalysts: Leveraging ligand field theory to elucidate structure-property relationships

Journal of Materiomics
Spinels have been widely concerned as a promising class of electrocatalysts due to their appealing catalytic properties and the tunability of their compositions and structures.
Xin Li, Zongkui Kou, Jiayan Dai, Hao Sun, John Wang, Shiyou Zheng   +5 more
doaj   +1 more source

Pink and red spinels in marble: trace elements, oxygen isotopes, and sources

, 2017
The oxygen isotopic composition of pink to red and other colored spinels hosted by marbles worldwide have been combined with trace elements investigated by electron microprobe analysis (EMPA).
Gaston Giuliani, Anthony E. Fallick, Pardieu, Vincent, Boyce, A. J., Pardieu, V., Pham, V. L., Fallick, A. E., Giuliani, Gaston, Adrian J. Boyce, Pham, Van Long, Vincent Pardieu, Boyce, Adrian J., Van Long Pham, Fallick, Anthony E.   +13 more
core   +1 more source

Pyridine‐Isomerism‐Driven Spin Engineering at a COP‐Fe3O4 Interface for High‐Performance Oxygen Reduction Electrocatalysis

Advanced Energy Materials, EarlyView.
Strategically adjusting the pyridine nitrogen position in the polymer matrix (pyridine isomerism) intensifies its interaction with embedded Fe3O4 nanocrystals. This enhanced interaction induces a spin‐state transition in Fe from low‐spin to intermediate‐spin, accompanied by refined d‐orbital properties.
Ruiqi Cheng, Xiaodong Lin, Qi Li, Yueying Chu, Xia Li, Huihuang Fang, Lin Zeng, Xinlin Hong, Alexandru Vlad, Guangchao Li, Feng Deng, Kwok‐yin Wong   +11 more
wiley   +1 more source

Entropy‐Stabilized Aluminate Catalysts That Break the Activity–Stability Tradeoff in CF4 Hydrolysis

Angewandte Chemie, EarlyView.
Entropy‐stabilized aluminate breaks the activity–stability tradeoff in CF4 hydrolysis by combining a multication aluminate framework with an entropy‐stabilized lattice. An electron‐deficient Al–O environment is F‐philic but O‐phobic, enabling C–F activation while suppressing H2O poisoning. Under steam‐rich, strongly fluorinating conditions, the entropy‐
Seunghyuck Chi, Hyungmin Jeon, Yaejun Baik, DongHwan Oh, Jin Seok, Woosung Choi, Seungjun Lee, Minkee Choi   +7 more
wiley   +2 more sources

Complex Iridium Oxides Converge In Structure And Reactivity During Acidic Oxygen Evolution Electrocatalysis

Advanced Energy Materials, EarlyView.
Ir‐based double perovskites restructure during acidic oxygen evolution electrocatalysis through dissolution of non‐Ir cations and convergence toward IrOx active‐site motifs with similar structure and intrinsic activity across compositions. The identity of the dissolving cations controls dissolution and surface reconstruction kinetics, clarifying how ...
Harrison H. Lippie, Xun Zhan, Kevin C. Matthews, Arya M. Balasubramanian, Jamie H. Warner, Joaquin Resasco   +5 more
wiley   +1 more source

Linking DSC/TGA to Cell Levels: Energetics, Evolved Gases, and Thermal Safety of NMC811‐Graphite Micro‐Cell

Advanced Energy Materials, EarlyView.
A bottom‐up, component‐resolved framework combining DSC/TGA, evolved gas analysis, and in situ XRD reveals how decomposition pathways control energy release in partial and micro‐cell configurations. Separator‐free assemblies are dominated by cathode‐O2${\rm O}_2$/anode‐Li reactions, while the separator restricts oxygen transport, reshapes the reaction ...
Ayrton M. Yanyachi, Lingmin Lin, Siddhartha Nanda, Wenlong Li, Yijin Liu, Steven Swinnea, Hadi Khani, Donal Finegan, Ofodike A. Ezekoye   +8 more
wiley   +1 more source

Synergistic Regulation of Interfacial Potential and Anionic Covalency for High‐Voltage Cobalt‐Free All‐Solid‐State Batteries

Angewandte Chemie, EarlyView.
A synergistic interface regulation strategy using high‐dielectric BaTiO3 and sulfate‐derived S─O bonds is developed to unlock high‐voltage LiNi0.5Mn1.5O4 all‐solid‐state batteries. By mitigating space‐charge layer effects and stabilizing lattice oxygen, the system achieves high‐rate (3 C) and durable operation in 5 V‐class cobalt‐free solid‐state ...
Yue Wang, Shuibin Tu, Long Qian, Shijie Xu, Chao Ye, Shi‐Zhang Qiao   +5 more
wiley   +2 more sources

Optimización de espinelas LiCo_yMn_2-yO₄ para electrodos positivos de baterías recargables de ion-litio mediante ajuste del dopado y de la temperatura de síntesis

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
The synthesis of LiCoyMn2‑yO4 (0 < y ≤ 0.33) spinels with optimised electrochemical performances in the 4V region has been carried out. They have been obtained by an original procedure designed by us, based on the reaction at 750ºC between the ...
Mandal, S., Lazarraga, M. G., Pérez-Revenga, M. L., Rojas, R. M., Amarilla, J. M., Rojo, J. M.   +5 more
doaj