Peneliti Hong Kong kembangkan baja tahan karat ultra untuk hidrogen hijau

Sebuah tim di Universitas Hong Kong telah menciptakan paduan baja tahan karat baru yang tahan terhadap korosi dalam elektrolisis air laut. Material ini dapat menggantikan komponen titanium yang mahal dalam sistem produksi hidrogen.

Paduan yang dikenal sebagai SS-H2 ini dikembangkan di bawah kepemimpinan Profesor Mingxin Huang di Departemen Teknik Mesin. Material ini menggunakan strategi pasivasi ganda berurutan, membentuk lapisan kromium oksida diikuti dengan pelindung berbasis mangan yang mampu menahan potensi hingga 1700 mV. Pendekatan ini mengatasi keterbatasan baja tahan karat konvensional, yang mengalami kegagalan pada sekitar 1000 mV selama oksidasi air di lingkungan yang kaya klorida.

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ETH Zurich scientists with single-atom indium catalyst converting CO2 to methanol in a high-tech lab reactor, sustainable energy theme.
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Scientists develop single-atom catalyst for CO2-to-methanol conversion

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Researchers at ETH Zurich have engineered a catalyst using isolated indium atoms on hafnium oxide to convert CO2 and hydrogen into methanol more efficiently than previous methods. This single-atom design maximizes metal use and enables clearer study of reaction mechanisms. The breakthrough could support sustainable chemical production if powered by renewables.

Researchers at King's College London have created a novel aluminum compound that mimics the reactivity of rare metals. The discovery, featuring a unique triangular structure, could enable cheaper and greener chemical processes. Led by Dr. Clare Bakewell, the team published their findings in Nature Communications.

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Researchers at Oak Ridge National Laboratory have developed RidgeAlloy, a new aluminum alloy that transforms contaminated scrap from car bodies into high-performance material for vehicle parts. This innovation addresses recycling challenges posed by impurities, potentially reducing energy use by up to 95 percent compared to primary aluminum production. The breakthrough could enable the reuse of up to 350,000 tons of aluminum scrap annually in North America by the early 2030s.

Researchers at the Norwegian University of Science and Technology believe they have spotted signs of a triplet superconductor in the niobium-rhenium alloy NbRe. This material could transmit both electricity and electron spin without resistance, potentially advancing quantum computing. The finding, if confirmed, might stabilize quantum devices and reduce their energy consumption.

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Japanese scientists have created a new spin-flip material that could increase solar panel efficiency by up to 130 percent. The technology also holds potential for OLED displays and lighting systems. Details emerged in recent reports on advancements in photovoltaic materials.

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