Results 51 to 60 of about 176,693 (289)

Improved Process for Separating TiO₂ from an Oxalic-Acid Hydrothermal Leachate of Vanadium Slag

Metals, 2022
In the present study, a process of separating high-quality TiO2 from an oxalic-acid leachate of vanadium slag was proposed. It consists of two steps; oxalic acid was firstly recovered from the leachate by the cooling-crystallization method, and ...
Qingdong Miao, Ming Li, Guanjin Gao, Wenbo Zhang, Jie Zhang, Baijun Yan   +5 more
doaj   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

$d-p$ model and spin-orbital order in the vanadium perovskites

, 2018
Using the multi-band $d-p$ model and unrestricted Hartree-Fock approximation we investigate the electronic structure and spin-orbital order in three-dimensional VO$_3$ lattice.
Oleś, Andrzej M., Rościszewski, Krzysztof   +1 more
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Direct Measurement of Vanadium Crossover in an Operating Vanadium Redox Flow Battery [PDF]

, 2013
Measurements of Vanadium diffusion coefficients for transport across cation exchange membranes using dialysis cells have been reported in the literature.
Meyers, Jeremy P., Sing, David Charles
core   +1 more source

Effects and optimization of hydrolysis conditions on the diameter distance ratio for metatitanic acid

Scientific Reports
Controlling and predicting the narrow particle size distribution of metatitanic acid could help to improve pigment and application performances of TiO2.
Congxue Tian
doaj   +1 more source

Superior photothermal conversion performance of black titanium-based materials

iScience
Summary: The application of photothermal conversion technology in the fields of seawater desalination and wastewater treatment stands as a potent approach to alleviating the global water scarcity crisis. In this research, we have successfully synthesized
Jun Li, Enhui Wu, Zhong Xu, Jing Hou, Wenjing Peng, Hong Li, Xiang Li   +6 more
doaj   +1 more source

Process Mineralogy of Vanadium Titanomagnetite Ore in Panzhihua, China

Separations, 2023
After decades of development of the vanadium titanomagnetite (VTM) ore in the Panzhihua district changes have taken place to the ore characteristics.
Fuxing Zhu, Zhanshan Ma, Guanjin Gao, Kehui Qiu, Weixing Peng   +4 more
doaj   +1 more source

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

Advanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai, Xiaoyu Huo, Xin Long, Enkang Fu, Xusong Gong, Lei Wei, Liang An   +6 more
wiley   +1 more source

Structural, orbital, and magnetic order in vanadium spinels

, 2004
Vanadium spinels (ZnV_2O_4, MgV_2O_4, and CdV_2O_4) exhibit a sequence of structural and magnetic phase transitions, reflecting the interplay of lattice, orbital, and spin degrees of freedom.
A. Abragam, C. E. Moore, J. B. Goodenough, K. I. Kugel, K. I. Kugel, O. Tchernyshyov, P. Schiffer, Y. Ueda   +7 more
core   +1 more source