Results 21 to 30 of about 499,274 (169)

电吸附电极制备研究进展

open access: yesGongye shui chuli, 2017
电吸附是一种相对新兴的水处理技术,其中电极是制约电吸附性能的关键因素,也是电吸附研究的热点。综述了近年来电吸附电极的研究情况,主要介绍了以活性炭(纤维)、石墨烯、炭气凝胶、碳纳米材料为原材料的电极制备研究进展。其中石墨烯和碳纳米材料基体电极具有良好的循环使用性能和高吸附容量,是目前最具应用前景的一类电吸附电极,是今后电吸附电极研究的主要方向。
张世春   +4 more
doaj  

Gadolinium‐Induced Activation of CoNiO2 for Efficient Oxygen Evolution: A Structural and Electronic Modulation Approach

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Multicomponent transition metal oxides (TMOs) incorporating rare‐earth (RE) elements have emerged as promising materials for the oxygen evolution reaction (OER). However, knowledge of how to regulate the structure of TMO‐based nanomaterials through RE incorporation to enhance catalytic performance remains limited.
Bolin Zhao   +6 more
wiley   +1 more source

电Fenton技术的研究现状及应用进展

open access: yesGongye shui chuli, 2018
电Fenton法通过原位产生的过氧化氢(H2O2)与Fe2+反应生成羟基自由基(·OH)处理难降解有机废水,阴极材料是实现电Fenton高效处理效果的关键因素。简要介绍了电Fenton技术的原理、分类及应用,详细阐述了非金属与金属阴极材料的研究进展。非金属材料主要以碳材料为载体,氮、硼和硫掺杂为主;金属材料主要有Fe、Cu和Ce等。获得高效、廉价的阴极材料是电Fenton技术今后的研究方向之一。
赵庆良, 黄慧彬, 丁晶, 王思宁
doaj  

From Molecular Motion to Macroscopic Function: Tailoring Tetraarylethylene Supramolecular Architectures for Aggregation‐Induced Emission and Wave Absorption

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance.
Renjie Wang   +7 more
wiley   +1 more source

测量电瓷材料相对介电常数和介质损耗角正切有关参数的选择

open access: yesDianci bileiqi, 1987
目前电瓷行业对电瓷材料的两项主要电气性能—相对介电常数ε和介质损耗角正切值tanδ的测定,一般都是按GB1409—78《固体电工绝缘材料在工频、音频、高频下介电系数和介质损耗角正切试验方法》,采用高压电桥进行。测量系统的电气原理如图1所示。测量方法是采用三电极(高压电极,测量电极,保护电极)系统。三电极中,测量电极和保护电极之间距——保护间隙宽度和测量时对试品施加的电压大小,对测量结果有一定的影响。电瓷材料测定时 ...
李瑞田, 林玉庆
doaj  

Superior Abrasibility of YSZ(ESP)/BN@ZrO2‐Polyester Composite Sealing Coating Reinforcing With Hybrid Micron/Nanometer Multiscaled Pore Structure

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu   +8 more
wiley   +1 more source

导电聚合物修饰微生物燃料电池阳极的研究进展

open access: yesGongye shui chuli, 2017
阳极作为微生物燃料电池的重要组成部分,其性能直接影响微生物燃料电池的产电效率。主要综述了聚苯胺、聚吡咯等导电聚合物及其复合物修饰微生物燃料电池阳极材料的最新研究进展,对修饰材料的特点与性能进行了分析,最后对导电聚合物修饰微生物燃料电池阳极进行了展望。
钟登杰, 廖新荣, 刘雅琦
doaj  

A Topology‐Guided Design Strategy for Polymerized Naphthoquinone Cathodes in Rechargeable Aluminium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao   +8 more
wiley   +1 more source

一种电极材料及超级电容器

open access: yes, 2017
本发明提供了一种电极材料及超级电容器。本发明提供的电极材料通过以下方式获得:a)将可膨胀石墨与碳源溶液混合,得到混合料;b)将所述混合料造粒,得到碳源包覆可膨胀石墨的球型前驱体;c)对所述前驱体进行热处理,得到碳包覆可膨胀石墨的球型复合材料;d)将所述碳包覆可膨胀石墨的球型复合材料与活化剂溶液混合,加热活化,得到活性碳包覆可膨胀石墨的球型复合电极材料。所述电极材料比表面积大,导电性良好,比容量高,能量密度高 ...
张筱喆   +4 more
core  

两种铜基触头材料的电弧侵蚀性能研究

open access: yesGaoya dianqi, 2012
电接触材料在工作过程中会受到机械磨损、环境腐蚀及电弧侵蚀,其中,电弧侵蚀对电接触材料影响最大,它是影响接触材料的电寿命和可靠性的最重要因素。笔者对采用熔渗法制备的CuCr50与电弧法制备的CuCr45电接触材料分别进行DC 50 V,20、30、40、50 A的电接触试验,并通过扫描电镜观察材料在电弧侵蚀后的形貌,对这两种材料在直流、阻性负载条件下的电弧侵蚀特征进行对比研究。结果表明,CuCr45与CurCr50在DC 50 V,20、30、40、50 A条件下,材料都由阳极向阴极转移 ...
孙财新, 王珏, 严萍
doaj  

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