Investigation of the Dual-Regulatory Mechanism of Zr in MnREZrO Oxide Catalysts for NO Oxidation.

Utilizing Diesel Oxidation Catalysts (DOC) to partially oxidize NO to NO is a crucial step in controlling NO emissions from diesel engines. However, enhancing both catalytic activity and hydrothermal stability remains a significant challenge. Benefiting from abundant asymmetric oxygen vacancies and increased Mn content, MnREZr exhibits superior NO oxidation performance (T = 337 °C) and hydrothermal aging resistance (T = 340 °C) compared to the undoped sample (T = 365 °C).

Controlled Synthesis of Triangular Submicron-Sized CeO and Its Polishing Performance.

CeO is widely used in the field of chemical-mechanical polishing for integrated circuits. Morphology, particle size, crystallinity, and Ce concentration are crucial factors that affect polishing performance. In this study, we successfully synthesized two novel triangular CeO abrasives with similar particle sizes (600 nm) but different morphologies and Ce concentrations using a microwave-assisted hydrothermal method with high-concentration raw materials, and no surfactants or template agents were added.

Gradual gradient distribution composite solid electrolyte for solid-state lithium metal batteries with ameliorated electrochemical performance.

Composite solid electrolytes (CSEs) have emerged as promising contenders for tackling the safety concerns associated with lithium metal batteries and attaining elevated energy densities. Nonetheless, augmenting ion conductivity and curtailing the growth of lithium dendrites within the electrolyte remain pressing challenges. We have developed CSEs featuring a unique structure, in which LiLaZrTaO (LLZTO) is distributed in a gradient decline from the center to both sides (GCSE).

Misplaced Intuitions in Interventions to Reduce Attractiveness-Based Discrimination.

Individuals and organizations are increasing efforts to address discrimination. Nonexperts may lack awareness of, or are resistant to, scientifically informed strategies for reducing discrimination, instead relying on intuition. Five studies investigated the accuracy of nonexperts' intuitions about reducing discrimination concerning physical attractiveness.

A cycling robust network binder for high performance Si-based negative electrodes for lithium-ion batteries.

Silicon has been a pivotal negative electrode material for the next generation lithium-ion batteries due to its superior theoretical capacity. However, commercial application of Si negative electrodes is seriously restricted by its fast capacity fading as a result of severe volume changes during the process of charge and discharge. A novel functional binder is essential to resolve this conflict.

Correction: Effect of particle size distribution on the electrochemical performance of micro-sized silicon-based negative materials.

[This corrects the article DOI: 10.1039/C8RA00539G.].

Effect of particle size distribution on the electrochemical performance of micro-sized silicon-based negative materials.

Si has been extensively examined as a potential alternative to carbonaceous negative materials, because it shows exceptional gravimetric capacity and abundance. In recent years, the strategy of using nano-structured silicon materials as building blocks to build micro-sized silicon-based materials has been widely studied. In this work, a commercialized and benchmark micro-sized silicon-based material (denoted as SiO /C) is used as research target and three groups of materials with different particle size distributions (PSDs) were obtained by simply mechanical sieving.

Formation of Si nanowires by the electrochemical reduction of SiO2 with Ni or NiO additives.

Various morphologies of silicon nanowires (SiNWs) were successfully prepared by the electrochemical reduction of silica mixed with different additives (Au, Ag, Fe, Co, Ni, and NiO, respectively). Straight SiNWs were extensively obtained by the electro-reduction of porous Ni/SiO2 blocks in molten CaCl2 at 900 °C. The SiNWs had a wide diameter distribution of 80 to 350 nm, and the Ni-Si droplets were found on the tips of the nanowires.

Improving the Cycling Stability of Si/Ni Negative Composite Through Introducing the SiOC Skeleton.

A Si/Ni/SiOC (SNS) composite structure with high efficiency and long-term cycling stability was synthesized by a cost-effective and scalable method. In this structure, a SiOC net with favorably physical and chemical stability acts as a skeleton to support and segregate Si-Ni mixed powders. The electrochemical performance of Si-Ni as a negative for Li-ion battery had been largely improved through introducing a stable SiOC skeleton structure as buffer base.

Electrochemical preparation of silicon nanowires from nanometre silica in molten calcium chloride.

Here we report Si nanowire growth by electrochemical reduction of nanometre silica in molten CaCl2; to our knowledge, this is the first report of an electrochemical route that provides crystalline Si nanowires in large quantities.