Results 41 to 50 of about 13,167 (170)
Rare Metals, EarlyView.ABSTRACT Although lithium metal has been regarded as an ideal anode material for high‐energy‐density batteries, its practical applications remain hindered by many serious challenges. Three‐dimensional (3D) porous Cu current collectors demonstrate potential in ensuring uniform Li deposition.
Meng‐Qi Zhu +7 more
wiley +1 more source
Dianci bileiqi, 2010 国内Φ35 mm氧化锌电阻片主要用于标称电流为5 kA等级的避雷器,根据标准要求,其应通过65 kA的大电流冲击耐受试验。但是一系列的实际试验表明,许多国内生产厂商生产的Φ35 mm电阻片并不能顺利通过65 kA大电流冲击耐受试验。在电阻片大电流耐受特性研究中,选用了6家国内有代表性的电阻片生产厂生产的Φ35 mm氧化锌电阻片为研究对象,通过不同的试验方法对电阻片的大电流冲击耐受能力进行了系统试验研究。通过试验研究,对国内生产的Φ35 mm氧化锌电阻片的大电流冲击耐受能力有了全面的了解 ...
蒋国文 +5 more
doaj
Rare Metals, EarlyView.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren +9 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Shiyou jixie, 2014 高产储层在采用氮气钻井时，由于气体流量大、携岩能力强、作业时间长，从井底返回的高压、高速和高携岩量气固两相流极易使多功能四通产生冲蚀。应用流体动力学与冲蚀磨损模型耦合计算方法，计算了实际放喷工况下多功能四通的流体特征和冲蚀磨损情况，并将计算结果与四通的实际冲蚀损伤检测结果进行对比；依据多功能四通的冲蚀磨损深度与工作时间的关系曲线，结合实际的主要冲蚀区域分布，对作业过程中的多功能四通冲蚀磨损情况进行了提前预测。分析结果表明，多功能四通的旁通冲蚀损伤最为严重，旁通的损伤主要是在放喷工况下造成 ...
张宏伟 +5 more
doaj
跨国电网互联情景下的碳流及碳减排效益研究—以非洲能源互联网为例
全球能源互联网, 2019 全球能源系统正在经历转型，未来的能源体系中将以清洁能源和电力为主导，因此有必要研究一套针对清洁能源电力的碳减排核算方法。在传统“碳流”概念的基础上，针对清洁能源电力提出了广义碳流概念，以此引申定义了电网互联情景下的负碳流，并提出了消费侧视角下包含多种能源的电力系统碳排放核算方法。基于碳流工具，能够从消费侧精确评估电网互联下的清洁电力输送的减排效益。以非洲跨国电网互联情景为例，非洲通过洲内电网互联促进清洁电力输送，至2030年总的“负碳流”为2700万t CO2/年；至2050年“负碳流”可达8700万t
谭新 +5 more
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Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The development of highly efficient and stable nonprecious metal electrocatalysts for the acidic oxygen evolution reaction (OER) is crucial to advance proton exchange membrane (PEM) water electrolysis. In this work, a dual synergistic strategy was proposed by constructing a Ce‐modified MnO2/MnO heterostructure.
Chuanbin Li +7 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
wiley +1 more source