Results 31 to 40 of about 14,219 (119)
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
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Photodetectors, based on GaAs nanowires (NWs), hold significant promise in the fields of high integration micro‐ and nano‐optoelectronics applications because of their outstanding electronic and optical properties. To date, significant efforts have been directed toward enhancing the performance of photodetectors, aiming for high detectivity ...
Yu Hao +11 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
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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, Volume 45, Issue 2, February 2026.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
wiley +1 more source
Engineering 2D Materials for High‐Current‐Density Electrocatalytic Water Splitting
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Water electrolysis is a key method for sustainable hydrogen production, using water as an abundant resource. However, efficient and stable operation at high current densities remains challenging due to energy losses, catalyst degradation, and limited ion–electron transport.
Tianqi Guan +8 more
wiley +1 more source
Dianci bileiqi, 2003 氧化锌电阻片的通流能力主要取决于电阻片的微观均匀性。使用纳米材料,有助于提高瓷体均匀性和致密性,使得氧化锌电阻片电气性能尤其是通流能力得到改善。为使纳米材料充分发挥作用,必须解决纳米材料自身的团聚,并提高料浆混合的均匀性。
刘勇飞
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Dianci bileiqi, 2012 在电力系统中使用的10 kV避雷器数量巨大,其质量对10 kV架空线路防雷水平至关重要。通过对10 kV复合外套金属氧化物避雷器进行整只4/10μs、65 kA大电流冲击耐受试验,分析结果得出:10 kV复合外套避雷器生产工艺对其大电流冲击耐受能力有重要影响,在非电阻片因素下,通过改进生产工艺可提高大电流冲击耐受能力。
苏宁 +4 more
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