Results 71 to 80 of about 29,284 (225)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Preparation and Electromagnetic Wave Absorbing Property of SiC Fiber /Epoxy Resin Composites [PDF]
, 2015 本论文对碳化硅（SiC）纤维进行热处理，制备了不同电阻率的SiC纤维；利用不同电阻率的SiC纤维与环氧树脂复合，制备单层、两层和三层复合材料，测试其在X波段下的电磁参数及吸波性能；利用传输线理论，计算预测了纤维电阻率、纤维体积分数、材料厚度和叠层方式对复合材料吸波性能的影响规律，并将实验结果与理论计算结果进行了对比验证。 研究发现，在1000-1500C温度区间，随着热处理温度的升高，SiC纤维的电阻率大幅度降低。当热处理温度达到1500C时，纤维电阻率约为1ohm.cm。随着纤维电阻率的降低 ...
李华展
core
High‐Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium‐Ion Batteries
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The massive stockpiling of copper slag (CS) presents severe environmental and resource‐waste challenges. Existing strategies for CS valorization typically yield low‐value‐added products. Herein, we propose an innovative hierarchical regulation approach to transform CS into high‐performance LiFePO4 (LFP) cathode materials.
Yuyun Li +5 more
wiley +1 more source
Gaoya dianqi, 2019 为了探究乙丙橡胶绝缘的表面电痕放电对其极化去极化电流的影响,文中依据IEC 60587:2007模拟乙丙橡胶在实际运行中的表面污秽环境,对乙丙橡胶绝缘试样进行了电痕放电试验,分析了电痕的形成机理,测量了不同电痕腐蚀程度的试样的极化/去极化电流。试验结果表明:绝缘的潮湿污秽区域极易产生泄漏电流,并导致干燥区的形成。在干燥区内引发的重复放电会进一步破坏绝缘表面,从而形成电痕放电。乙丙橡胶的极化电流与其表面电痕腐蚀程度有关:随着乙丙橡胶表面电痕腐蚀程度加重,乙丙橡胶电导率升高,极化电流逐渐增大。
王少飞 +5 more
doaj
Micromixing-assisted Fabrication and Photoelectrochemical Performance Investigation of TiO2 Photoanodes with Visible Light Response [PDF]
, 2015 基于TiO2半导体特殊的光电化学性能，其有望成为绿色、环保的新型金属防腐技术中最为重要的光阳极材料。但是，TiO2存在可见光利用率低、光量子效率不高等限制其实际应用的问题。此外，由于传统混合方式在快速沉淀体系中难以有效调控均相化学过程，导致碱性液相环境制备有序TiO2薄膜至今仍无法实现。基于上述考虑，本论文提出使用微混合设备辅助在碱性液相环境下制备出形貌可控的TiO2薄膜光阳极，并通过沉淀剂对产物进行选择性原位掺杂改性。通过数值模拟及实验测试深入研究了制备条件和掺杂对TiO2薄膜光阳极光电化学性能的影响。
许超
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The dual challenges of environmental sustainability and rising energy needs underscore the necessity for high‐energy‐density batteries, making lithium–sulfur (LSB) systems with their high theoretical capacity highly attractive. However, the polysulfide shuttle, coupled with inherent kinetic limitations in the sulfur reduction reaction ...
Bingbo Ni +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium‐ion batteries (SIBs) have emerged as promising candidates for large‐scale energy storage due to their cost‐effectiveness and resource abundance. However, challenges such as sluggish ion diffusion kinetics, structural degradation, and interfacial instability hinder their practical applications.
Yunze Wang +7 more
wiley +1 more source
Properties of Germanium Composited Lithium Phosphate Solid Electrolyte Thin Film [PDF]
, 2015 固体电解质，作为一种具有离子导电性的固态物质，其应用已经渗透到很多的领域，如新型固体电池、高温氧化物燃料电池、离子传导型传感器件和太阳能电池等。其中固体电解质在锂离子电池中有着极其重要的应用，其固态性质可以大大提高锂离子电池的安全性，并且使手机等电子设备实现超长待机。在此之前研究较多的固体电解质薄膜为无定形态的LiPON，其离子电导率已达到1×10-6~3×10-6S/cm。通过在磷酸锂中掺杂氮元素，改善了磷酸锂本身较差的离子电导率（~10-18S/cm）。近期 ...
孙士博
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 近几十年来,全球气候变化异常,极端水文事件频繁发生,认识极端泥沙的动态变化并探究其可能影响因素对于预防泥沙灾害具有重要的现实意义。以黄河中游无定河流域为研究对象,从量级、时间、强度和频次4个方面,构建最大1日含沙量(Sx1d)、最大5日含沙量(Sx5d)、年最大1日含沙发生时间(DSx1d)、年最大5日含沙发生时间(DSx5d)、年均含沙量(Sint)、强含沙量(S95p)、极强含沙量(S99p)、高含沙水流日数(S200)共8个极端泥沙指标,采用Mann-Kendall趋势检验 ...
李梦楠 +5 more
doaj