A rapid and scalable method for making mixed metal oxide alloys for enabling accelerated materials discovery

Abstract

Abstract

High‐Voltage‐Driven Surface Structuring and Electrochemical Stabilization of Ni‐Rich Layered Cathode Materials for Li Rechargeable Batteries

“…Note that the rock-salt phase, which can be indexed as the (111) plane with a d-spacing of 2.41 Å, was observed on the particle surface (region 2) of the electrode after 50 cycles at a cut-off voltage of 4.6 V, whereas layered and spinel phases coexisted in the inner region (region 1), which is consistent with the Ni L-edge XAS spectra (Figure 5b). [50,[53][54][55][56][57][58] The thickness of the cubic region was determined to be ≈10 nm from FFT analysis. However, the cubic phase was not detected on the particle surface of the electrode after 50 cycles at 4.9 V, where the only layered and spinel phases were observed from the inner and outer region, as shown in Figure 5c.…”

Smallest Bimetallic CoPt3 Superparamagnetic Nanoparticles

“…Reviewing potential synthesis methods, many chemical and physical processes have been developed over the years to accomplish a controlled synthesis of such NPs. These methods can be classified into several different synthetic approaches, including impregnation methods, solution phase synthesis, wet chemical routes with organometallic approaches, simultaneous reduction/thermal decomposition, , pulsed laser deposition (PLD), synthesis in ionic liquids, transmetalation reactions synthesis, polyol processing, plasma processing, − or hybrid processing with liquids and plasma. , Recently, the most interesting route to date was reported, where monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) NPs were prepared from the oleylamine reduction of metal salts. The particles were an egg-like shape and 9.5 nm in diameter …”

Plasma oxidation of liquid precursors for complex metal oxides.

“…The prolonged high-temperature oxidation leads to thermodynamic equilibrium, which can cause phase segregation into species other than the originally targeted composition. 290 In contrast, oxidation in an oxygen plasma is a rapid (~ 1 min) and scalable technique which has been demonstrated to lead to non-equilibrium solid solution phase growth capable of producing homogenous metastable phases. 290 Herein we report plasma-oxidized mixed Irand W-metal oxide compositions for OER catalysis.…”

“…290 In contrast, oxidation in an oxygen plasma is a rapid (~ 1 min) and scalable technique which has been demonstrated to lead to non-equilibrium solid solution phase growth capable of producing homogenous metastable phases. 290 Herein we report plasma-oxidized mixed Irand W-metal oxide compositions for OER catalysis. W is an earth-abundant metal with an acid-stable oxide (WO3) 291 but poor activity for oxygen evolution.…”

“…Moreover, it is quite a challenge to control the size and composition of mixed metal oxide nanoparticles, a key parameter for the properties and performance of these materials. So, it is immediately apparent that a synthesis technique that allows ultrafast timescale of processing, controllable size, composition and crystallinity will facilitate the advancement of large-scale manufacturing of these materials290 .Beside the material composition, contribution of surface morphology via particle size and packing density of materials which rely on the method of preparation, is an important consideration in materials design. Nano sized cathode materials are effective because they impart larger electroactive surface for rapid lithium diffusion and a higher packing density for enhanced energy storage capabilities219 .…”