Results 31 to 40 of about 2,896 (118)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao +3 more
wiley +1 more source
Gaoya dianqi, 2023 为保证锂离子电池的安全健康使用，需要对锂离子的荷电状态进行实时估计，但由于电池内部复杂的电化学特性，且在辨识过程中辨识结果受温度、荷电状态和充放电倍率等非线性因素影响较大，实现准确的状态估计较为困难。文中首先基于二阶RC等效电路研究倍率充放电对锂电池的影响，另外为保证所建电池模型兼具较高精度和较好的实时性，根据最小二乘法对混合脉冲功率特性测试实验数据完成不同荷电状态下的数据拟合、参数辨识等工作，并依据扩展卡尔曼滤波完成对电池荷电状态的状态估计，并验证扩展卡尔曼滤波具备可实施性 ...
尚彦赟 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The realization of bifunctional perovskite devices integrating photovoltaic (PV) and light‐emitting diode (LED) capabilities requires precisely controlled grain architectures to facilitate dual carrier transport pathways. In this work, sulfaguanidine (SG) molecules were introduced into the perovskite solution to reconstruct the crystallization
Jiong Li +7 more
wiley +1 more source
Gaoya dianqi, 2007 针对一种高功率重复频率脉冲驱动源的Trigatron开关典型工作条件（输出电流20kA,脉宽25ns,100万次脉冲,累积传输电荷500C）,研制了一种长寿命Trigatron开关,触发电极采用一种四周具有一定数量缺口的圆盘式结构。在峰值电流23 kA,单次电荷传输量0.1C条件下,对开关进行了500 C电荷传输实验。实验后开关触发特性没有劣化,表明开关在典型工作条件下,可以传输大于500C的电荷量。
陈维青 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Platinum (Pt)‐based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis ...
Chenyang Shu +9 more
wiley +1 more source
Gaoya dianqi, 1998 对在操作波下冲击电压发生器的效率特性进行了理论分析和实验研究。结果表明:随着负载电容的减小其效率将增大;在同一负载电容下,波前电阻的减小也能提高其效率;在某一负荷范围内,通过调整波前电阻可以使效率随负荷的增大而有所提高。这些结果具有实用工程意义。
王建生, 殷保廉, 李政, 赵有斌
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
Shiyou jixie, 2015 数字化油田抽油机井示功仪用量多，采用传统方法在实验室内对示功仪载荷进行标定时，不仅工作量大，而且由于不能及时标定而导致载荷测试存在误差，影响功图计产与泵况分析的精度。鉴于此，以实测电动机功率曲线为基础，提出了示功仪载荷在线标定方法。该方法基于实测悬点示功图，考虑平衡装置参数、电动机瞬时效率、胶带减速器与换向机构效率，建立了电动机瞬时输入功率的仿真模型。将仿真电动机功率曲线与实测曲线进行对比，引入2种电动机瞬时输入功率平方和的均方根作为指标，诊断示功仪载荷是否存在漂移，并建立了示功仪载荷漂移量的计算模型 ...
黄伟 +5 more
doaj
Dianci bileiqi, 2020 IEC 60099-4:2014避雷器国际标准以重复电荷转移能力试验替代长持续时间电流冲击耐受试验,特对不同厂家、不同配方的电阻片进行测试。实验表明:RL配方的电阻片重复电荷转移前后工频电压变化超出标准规定5%的限值,通过8/20μs雷电正反各筛选一次,然后再进行重复电荷转移实验或重复电荷转移实验过程中正反向交叉测试 ...
田冰, 厍海波, 朱成洋, 郭向洋
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The construction of p–n homojunctions represents a promising strategy for effective solar‐driven photocatalytic hydrogen evolution, owing to their inherent advantages of superior lattice matching and minimized charge transfer resistance. However, this approach remains largely unexplored.
Yueqiang Lin +6 more
wiley +1 more source