Results 11 to 20 of about 3,781 (103)

In Situ Construction of S‐Scheme VIn‐Zn2In2S5/O‐Zn2In2S5 p–n Homojunctions for Enhanced Photocatalytic Hydrogen Evolution

open access: yesRare 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

Surface Sulfate Modification Promoted Excitons Extraction of BiOBr Nanosheets for Efficient 1O2 Photosynthesis and Chlorophenols Dechlorination

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi   +8 more
wiley   +1 more source

Surface‐Embedded Ag@Multilayer Graphene for Photothermal‐Enhanced Superhydrophobic Anti‐Icing Coatings

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang   +7 more
wiley   +1 more source

Scalable Synthesis of Ultrathin Silica Nanosheets for Applications in Thermal‐Management Aerogels and Flexible Composite Films

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Silica nanosheets (SiO2 NSs) hold great promise for advanced thermal protection applications because of their exceptional thermal and chemical stability. However, their development has been hindered by challenges in scalable synthesis and structural integration for specialized applications.
Qun‐Yao Yuan   +3 more
wiley   +1 more source

基于静态伏安特性曲线的ZnO电阻片耐受能量计算等效性研究

open access: yesDianci bileiqi, 2022
为了模拟计算ZnO电阻片在避雷器组限制过电压过程中吸收的能量,笔者针对所选取的电阻片进行冲击电流试验;绘制了在不同电流波形下的静态伏安特性曲线,描述了其与电阻片实际伏安特性的关系,并统计了同批次电阻片伏安特性分布规律;通过曲线拟合的方式建立伏安特性方程进行吸收能量的模拟计算。结果显示,在耐受冲击电流的过程中,电流波形波头时间对电阻片吸收能量计算等效性影响最大,波头时间越长,电阻片所表现出的伏安特性越接近试验绘制的静态伏安特性曲线,即通过静态伏安特性曲线进行能量模拟计算等效性越好。
刘志远   +6 more
doaj  

风电场35 kV集电线路用混合电阻片避雷器研究

open access: yesDianci bileiqi, 2021
风电场35 kV集电线路所用的线路避雷器由于其能量吸收能力有限,在雷电流幅值较大时其MOA电阻片存在热崩溃的可能,严重威胁着集电线路的安全运行,因此必须采取措施对其进行抑制。本研究以某风电场35 kV集电线路雷击过程为研究对象,并采用ATP-EMTP软件搭建暂态仿真模型,提出一种新的风电场集电线路用35 kV混合电阻片线路避雷器,该避雷器采用氧化锌电阻片与碳化硅电阻片相互交替组合的形式,充分利用氧化锌电阻片动作快、碳化硅电阻片通流容量大的特点,形成兼顾两种电阻片优点的新的避雷器 ...
刘守豹   +6 more
doaj  

高电位梯度ZnO电阻片的研制

open access: yesDianci bileiqi, 2003
ZnO电阻片的电位梯度以单位厚度的压敏电压U1mA/mm来评价,目前传统生产的ZnO电阻片的电位梯度约为200V/mm左右,介绍了采用新配方、新工艺来提高ZnO电阻片的电位梯度,使电阻片的电位梯度提高到290V/mm以上,并使电阻片的其它电气性能有所提高或保持原有的较好水平,通过大量的配方试验和制作工艺的优化选择,已获得比较理想的实验结果。
姚政, 翟维琴
doaj  

烧结载量的增加对氧化锌压敏电阻性能的影响

open access: yesDianci bileiqi, 2006
采用上下结构的盒状烧钵作为氧化锌压敏电阻片的装钵方式,装钵量从16片、32片、48片、64片、80片提高至96片,对其电位梯度、泄漏电流、压比等进行了分析,试验电阻片为!60mm×21mm。结果表明,80片的装钵量最合理,不仅提高了电阻片的电位梯度,降低了压比,而且单片能耗比以前节省了近1/4,年节省电费20余万元。
黄海   +5 more
doaj  

金属氧化物电阻片电容特性的研究

open access: yesDianci bileiqi, 2016
避雷器的电容特性对避雷器的电位分布和稳定运行起着关键的作用,通过对避雷器的核心元件金属氧化物电阻片的电容特性的试验研究,来确定金属氧化物电阻片的电容-电压特性和电容-温度特性。试验结果表明,金属氧化物电阻片的电容值在运行电压为范围内为与电压成正比,电压越高,电容值的变化率越大;在-20℃+60℃变化范围内,金属氧化物电阻片电容值与温度成正比,随着温度的升高,金属氧化物电阻片电容值增加。电阻片的介电常数随频率的增加而变小,电容量也相应减小,损耗也随频率的升高而增加 ...
苗发金
doaj  

一起500 kV金属氧化锌避雷器故障原因分析

open access: yesDianci bileiqi, 2020
金属氧化物避雷器通过迅速释放过电压能量而保护与其并联的各种电气设备免受高电压影响。针对一起500 kV线路避雷器电阻片外绝缘涂层受损的缺陷,通过红外测温、带电检测和直流参考电压试验数据、现场解体试验分析查明故障原因为上节避雷器下法兰位置无排水孔,积水侵入避雷器内部引起上节顶部氧化锌电阻片外部绝缘涂层劣化击穿。由于局部氧化锌电阻片绝缘击穿导致电阻片串整体电压分布不平衡,正常电阻片荷电率增加,进一步加速劣化,最终导致上节氧化锌电阻片外绝缘涂层全部击穿,并根据缺陷原因提出了相应的预防措施。
任大江   +4 more
doaj  

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