Results 21 to 30 of about 1,168,816 (149)
Gaoya dianqi, 2022 罐式断路器作为SF6气体绝缘封闭设备，若气室内残留灰尘、金属碎屑等异物，则可能在带电后引发放电跳闸事故。文中介绍了一起252 kV罐式断路器内部放电故障引起的跳闸事故，通过返厂解体检查，判断此次故障是由施工过程中引入的异物导致的，并结合罐体内部电场仿真计算，对放电发生在送电过程中而非耐压试验时的原因进行了解释。
张丕沛 +4 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Rationally designing an electrocatalyst to achieve stable and efficient urea oxidation reaction (UOR) is crucial but still challenging, especially for ampere‐level application. Herein, Mn and Fe dual‐doped Ni0.85Se (Mn/Fe–Ni0.85Se) catalyst is synthesized via a facile and scalable electrodeposition and followed by selenization.
Guanglin Zhu +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The electrocatalytic co‐reduction of CO2 and nitrate (NO3− ${\text{NO}}_{3}^{-}$) to synthesize urea presents a sustainable alternative to traditional industrial processes, yet its efficiency is fundamentally limited by the kinetically mismatched activation and coupling of CO2 and NO3− ${\text{NO}}_{3}^{-}$.
Jiayu Liu +9 more
wiley +1 more source
Gongye shui chuli, 2006 采用内电解—MBR工艺对制药废水进行处理研究，内电解法作为预处理主要降低有机污染物污染负荷，同时可以转化难降解有机物抑制的毒性，提高废水的可生化性。MBR工艺具有污泥浓度高、抗冲击负荷能力强、降解充分、降解速率高，对难降解物质也可使之分解去除的特点。通过试验研究得出在原水COD为12000mg/L左右时，内电解对该废水COD去除率可达40%左右，MBR的出水可使COD<300mg/L。
迟娟 +5 more
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Gaoya dianqi, 2021 GIS是电网中负责电能分配与故障切除的重要设备。为了在不停电条件下获取GIS设备内部状态量,提前发现并预警设备缺陷,避免设备故障与电网事故,通过超声波、特高频、振动与气体分解产物法对GIS进行带电检测,结合电磁场理论对测试信号进行了分析,利用电容分压原理和化学反应方程式解释了放电原因与发展过程。带电检测发现110 kV GIS母线PT隔离开关内部存在振动与放电现象,停电解体后发现隔离开关内动触头处拨叉、舌簧与传动销存在烧蚀痕迹,同时放电点附近存在大量金属硫化物粉末。分析放电原因为舌簧压紧力不足导致拨叉 ...
郭超 +8 more
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Dual‐Layer Solid Electrolyte Interphase Enables Effective Suppression of Lithium Dendrites
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The heterogeneous solid electrolyte interphase (SEI) at the Li metal anode often leads to slow and uneven Li+ flux, causing severe Li dendrite growth. Herein, we combine X‐ray photoelectron spectroscopy and cryogenic transmission electron microscopy to demonstrate that a dual‐layer SEI, consisting of an inorganic inner layer and an organic ...
Huaping Wang +4 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The healing of diabetic chronic wounds is hindered by multiple pathological barriers, including oxidative stress imbalance induced by hyperglycemia, persistent bacterial infection, and impaired neovascular function. This study developed an F127–HA–BiOCl@CeO2 (FHBC) hydrogel dressing with acoustic responsiveness, achieving tissue repair through
Ran Zhao +8 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Self‐supporting aluminum (Al) foil anodes offer the advantages of high energy density, simplified structural configuration, and low cost. However, their practical application is severely constrained by challenges such as low initial Coulombic efficiency, pronounced interfacial side reactions, and sluggish lithiation kinetics.
Sheng Yang +8 more
wiley +1 more source
Gongye shui chuli, 1982 电化学法用于排水处理很早就开始了,分直接电解法和物理化学法两种类型。直接法,以铜的回收为例,其模式为:当接通外部电源时,在阳极,电子从电解液一侧向电极内部移动,正电荷向电解液中运动 ...
纪永亮
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Gaoya dianqi, 2014 将区域分解技术与有限元数值求解方法相结合,对于含有多重介质、薄均压屏蔽结构、非对称并联电容器组的252 kV SF6断路器灭弧室内部全场域进行三维电场数值计算。对比分析了区域分解技术对场域数值求解的影响,解决了大场域电场求解精度与求解效率的矛盾。给出了3种不同并联电容器组灭弧室绝缘配置方案,并对有无并联电容器组作用下的灭弧室内部电场进行对比分析,得到了灭弧室内部电场分布、触头沿面电场分布以及场均匀度的定量描述,找到了全场域绝缘薄弱点。
刘晓明 +3 more
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