Results 21 to 30 of about 839,329 (389)

Engineering High-Spin State Cobalt Cations in Spinel Zinc Cobalt Oxide for Spin Channel Propagation and Active Site Enhancement in Water Oxidation.

open access: yesAngewandte Chemie, 2021
Promoting the initially deficient but cost-effective catalysts to high-performing competitors is of significance in developing better catalysts. Spinel zinc cobalt oxide (ZnCo 2 O 4 ) is not considered as a superior catalyst for the electrochemical ...
Yuanmiao Sun   +5 more
semanticscholar   +1 more source

Catalytic Oxidation of Styrene in the Presence of Square Planar Cobalt(iii) Complexes of Polyanionic Chelating Ligands [PDF]

open access: yes, 1987
Styrene has been catalytically oxidised in the presence of iodosoarenes and square planar cobalt(iii) complexes of polyanionic chelating (PAC) ligands; possible intermediates in these oxygen atom transfer reactions include cobalt(v)-oxo ...
Collins, Terrence J.   +2 more
core   +1 more source

Identifying the geometric catalytic active sites of crystalline cobalt oxyhydroxides for oxygen evolution reaction

open access: yesNature Communications, 2022
Unraveling the precise location and nature of active sites is of paramount significance for the understanding of the catalytic mechanism and the rational design of efficient electrocatalysts.
Sihong Wang   +6 more
semanticscholar   +1 more source

Key Technology Research on the Efficient Exploitation and Comprehensive Utilization of Resources in the Deep Jinchuan Nickel Deposit

open access: yesEngineering, 2017
To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, difficult tunnel support, complicated ...
Zhiqiang Yang
doaj   +1 more source

An electrochemical investigation of the formation of CoSx and its effect on the anodic dissolution of iron in ammoniacal-carbonate solutions [PDF]

open access: yes, 2013
It has been found that the co-presence of cobalt (II) and thiosulphate ions in ammoniacal-carbonate solutions promotes the passivation of iron, under conditions in which it would otherwise continue to dissolve anodically. Electrochemical experiments have
D'Aloya, A, Nikoloski, A.N.
core   +2 more sources

Next‐Generation Cobalt‐Free Cathodes – A Prospective Solution to the Battery Industry's Cobalt Problem

open access: yesAdvanced Energy Materials, 2022
Lithium‐ion batteries are overreliant on cobalt containing cathodes. Current projections estimate that hundreds of millions of electric vehicles (EVs) will be on the road by 2050, and this ever‐growing demand threatens to deplete global cobalt reserves ...
N. Muralidharan   +7 more
semanticscholar   +1 more source

Application and Development of Smart Mine in China [PDF]

open access: yesMATEC Web of Conferences, 2019
The development of coal mining from ancient times to today has experienced the artificial stage, the mechanized mining stage, and the automated mining stage. Now it is developing towards a safer, greener and more efficient unmanned and smart mine.
Xu Ying   +3 more
doaj   +1 more source

Scientific Opinion on safety and efficacy of coated granulated cobaltous carbonate monohydrate as feed additive for all species [PDF]

open access: yesEFSA Journal, 2012
<p>Cobalt(III) is a component of cobalamin. Its essentiality as trace element results from the capacity of certain animal species to synthesise cobalamin by the gastrointestinal microbiota.
EFSA Panel on Additives and Products or Substances used in Animal Feed
doaj   +1 more source

A Tunable Two-impurity Kondo system in an atomic point contact [PDF]

open access: yes, 2011
Two magnetic atoms, one attached to the tip of a Scanning Tunneling Microscope (STM) and one adsorbed on a metal surface, each constituting a Kondo system, have been proposed as one of the simplest conceivable systems potentially exhibiting quantum ...
A Georges   +49 more
core   +2 more sources

Optimization of the effect and formulation of different coarse aggregates on performance of the paste backfill condensation

open access: yes工程科学学报, 2020
Hydration and setting time of paste-like backfill slurry in the Gansu Province’s Jinchuan copper and nickel mine is slow, and the degree of segregation of coarse aggregate is high, seriously affecting the quality of cemented paste backfill. In this paper,
Sheng-hua YIN   +5 more
doaj   +1 more source

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