Results 21 to 30 of about 112,852 (158)
研究了平板-平板电极、多针-平板电极和筛网电极3种电极结构DBD的放电特性,通过测量电压-电流波形图及放电发光图比较了它们的区别,并从放电机理角度对实验结果作了解释。结果表明:平板-平板电极DBD表现为稳定的细丝状放电。而多针-平板电极DBD融合针尖的电晕效应,使得放电空间中呈现扩散圆锥形放电。筛网电极DBD可以实现大气压辉光放电(APGD),放电更加均匀,放电空间内看不到放电细丝的存在。
王辉 +4 more
doaj
ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 more
wiley +1 more source
Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries
ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia +8 more
wiley +1 more source
Functionalized Silica‐Constructed Self‐Supporting Composite Separator for Lithium Metal Batteries
ABSTRACT Lithium metal batteries (LMBs) are considered highly promising next‐generation energy storage systems owing to their exceptionally high theoretical specific capacity and ultralow electrochemical potential. Nevertheless, the practical deployment of LMBs is still severely restricted by the uncontrollable formation and propagation of lithium ...
Li Chen +6 more
wiley +1 more source
大电流电子源是高功率氩离子激光器、离子镀膜装置、真空冶炼设备等的关键部件。目前多数是采用热阴极,现在介绍一种水冷杯状空腔电弧阴极。 设计空腔电弧阴极主要考虑:散热、绝缘、防止烧蚀、消除污染、限制弧斑运动、稳定电弧、启动电弧等因素。 本文设计的阴极如图1所示。图中1是水冷杯状金属空腔,其内壁面是阴极的发射面。在阴极出口孔内,装有自加热衬套2,用它来把阴极斑约束在空腔内 ...
王殿儒, 张福, 曹尔研, 田大准
core +1 more source
ABSTRACT Non‐noble metal oxygen electrocatalysts are essential for low‐cost rechargeable metal‐air batteries and fuel cells, determining their energy conversion efficiency. However, such electrocatalysts are limited by inadequate bifunctional activity and stability toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Lixin Sun +14 more
wiley +1 more source
阴极弧根为电子发射的主要区域,弧根的运动对空气直流电弧等离子体特性有重要意义。通过电极旋转驱动阴极弧根运动,实验观测得到电极旋转情况下空气直流电弧拉弧过程电极表面烧蚀情况、扭曲的弧柱形态,同时提取并对比了直线拉弧和旋转拉弧的电弧电压上升曲线。参照临界电流试验条件,建立小电流下平行电极间三维电弧仿真模型,探究在小电流情况下,自由燃烧态电弧的演变过程。仿真结果表明:阴极弧根运动使得发射后极间带电粒子空间分布变化,间隙放电通道改变,电弧的最大温度值降低;当电弧放电通道不稳定时,极间电弧电压出现波动 ...
付思, 陈文清, 曹云东
doaj
本实用新型属于一种可切割橡胶阵列电极。该电极是由橡胶阵列电极、导电胶、电极杆和密封环组成,其特征是,橡胶阵列电极是由层状的导电橡胶与层状的绝缘橡胶平行交替排列而成,其端面成为阵列电极,该电极因使用而受到污染后,可在电极的端部切割下一薄片,从而产生新的电极表面,恢复电极性能,该阵列电极提供了良好的信噪比和高的传质效率,因此具有高的检测灵敏度,该电极可用作电化学电极,特别适合于检测水溶液中有毒物质的浓度,该电极可应用于环境分析、临床检验、工业过程控制、食品工业等领域 ...
于鹏光, 徐奕德
core
ABSTRACT Lightweight metallic materials with high irradiation tolerance are essential for aerospace systems operating in extreme irradiation environments. However, the irradiation behavior of particle‐reinforced aluminum matrix composites and underlying irradiation damage mechanisms remain insufficiently understood.
Yuyao Chen +7 more
wiley +1 more source
深井接地极因占地面积小,选址容易的优点,具有很高的工程实用价值。由于单根深井接地极最大对角线距离不到1 m,明显不宜直接采用规程推荐的5倍对角线距离人工布线测量接地电阻。为此,文中建立了直流深井接地极模型,仿真计算了其接地电阻和地表电位分布,基于之提出了电流极距离要求;建立了深井接地极注流、电流极回流的模型,研究了接地电阻测量过程中深井接地极和电流极共同作用下的地表电位分布规律;结合深井接地极接地电阻的仿真计算值,分析获得了电压极的布置要求。改变电流极和电压极的位置,研究了测量误差与布线距离之间的关系 ...
陈家峰 +6 more
doaj

