Results 41 to 50 of about 31,765 (178)
Glycerophosphocholine‐Mediated Dual Regulation for Highly Stable Aqueous Iron‐Ion Batteries
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Iron‐ion batteries (FeIB) offer the advantages of low cost and high capacity, demonstrating potential for large‐scale energy storage. However, severe hydrogen evolution reaction (HER) occurs during cycling, which significantly impacts battery lifespan.
Tian Yang +6 more
wiley +1 more source
Dianci bileiqi, 2005 采用氨浸法制备ZnO纳米复合压敏瓷料的工艺手段,研制出压敏场强大于330V/m m,漏电流小于1μA,非线性系数大于58的压敏电阻器,电性能的一致性要优于普通压敏电阻器的5～10倍。用扫描电镜和能谱对瓷体显微结构及面扫成分进行了分析,讨论了ZnO压敏电阻材料结构和电性能的关系。研究表明,加入纳米复合粉制备压敏电阻是降低大规模生产中的成本,提高ZnO压敏电阻电性能及其一致性的有效途径。
李红耘 +5 more
doaj
Gaoya dianqi, 2020 电力变压器是电网电力输送中的核心电气设备,合理评估变压器的性能对保证电力系统稳定运行意义重大。文中根据变压器故障的原因和评价指标来源,提出了基于定量修正层次理论的变压器性能评估方法。针对变压器性能评估指标体系中评价因素结构复杂、数量庞大的问题,首先依据指标体系中反映变压器故障的准确程度,筛选出能够反映变压器绝缘性能、油性能、过热性故障和放电性故障的关键指标,建立了变压器性能评估关键指标体系;其次利用层次分析法并结合定量修正评分函数,确定指标的最优权重,得到各指标的评分值 ...
党建, 魏慧, 贾嵘, 刘广一
doaj
全球能源互联网, 2019 电网近年来的高速发展需要内外兼备的灵活性以保障其经济可靠的运行。世界各地智能电网的迅猛发展让电网和其他系统之间的关系越来越紧密。电网和其他系统正逐渐融合成为一个能源有机体。这给能源领域带来了根本性的挑战，同时也为电网消除传统的严格边界条件进而提升其灵活性提供了难得的机遇。从能源有机体的各个层面探讨了提高电网灵活性的可能性。电网存在着巨大的灵活性潜力，但是挖掘这些潜力需要高性能的分析方法和工具以实现电网的整体设计和能源有机体的全方位评估，并适应系统规模的逐渐扩大和复杂度的不断提高 ...
黄振宇, 陈有素
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Conventional lithium‐ion battery cathodes predominantly rely on reversible lithium intercalation in bulk, which inevitably induces phase transitions, transition metal migration, and voltage decay. Electrolytic anion adsorption pseudocapacitance provides a chance for bypassing these issues via a surface‐dominated reaction, especially in ...
Hongjin Ren +10 more
wiley +1 more source
Dianci bileiqi, 1994 配电系统中ＭＯＡ特性对其限压性能和动作负载的影响很大。本文以弧光接地过电压为例，研究ＭＯＡ特性参数与其限压性能、能量吸收和流过电流之间内在的关系和规律，为ＭＯＡ限压性能和动作负载的校核提供一种方法和理论依据，所得结果可供ＭＯＡ的选型和设计制造参考。配电系统，ＭＯＡ，特性，限压性能 ...
李谦, 王晓瑜, 招誉颐
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Ultrathin, lightweight, and mechanically compliant electromagnetic interference (EMI) shields are increasingly required for high‐frequency electronic devices. However, conventional metallic shields predominantly rely on conductivity‐driven reflection mechanisms, which become ineffective at reduced thickness and may cause severe secondary ...
Zida Zhang +7 more
wiley +1 more source
Dianci bileiqi, 2003 通过对样品压敏性能、介电性能的测定和晶体结构、表面形貌分析,研究了CeO2对TiO2电容-压敏电阻器的影响。研究发现CeO2对TiO2电容-压敏电阻的性能有显著的影响。在1350℃烧结条件下,0.4%摩尔分数CeO2的样品表现出优良的综合电性能,其压敏电压为15.84V/mm,非线性系数α为4.62,并具有很高的表观介电常数（εr=158600）,较低的介电损耗（tgδ=0.32）,是一种较有潜力的新型电容-压敏电阻器。
孟黎清 +3 more
doaj
Dianci bileiqi, 2022 针对现有非线性直流氧化锌电阻片的性能优化，笔者开展了电阻片侧面无机绝缘涂层的性能研究，并对比分析了不同涂层配方对电阻片方波通流容量、大电流冲击、老化系数、压比等参数性能的影响。通过对比测试涂覆4种不同无机绝缘涂层的氧化锌电阻片，涂覆最优配方绝缘涂层的氧化锌电阻片N4电位梯度为201 V/mm, 5kA雷电冲击残压比为1.76,非线性系数为24,50kA 4/10μs电流冲击以及300 A 2 ms方波电流冲击的通过率均为100%,老化系数为0.39,表现出良好的综合电学性能。
万帅 +6 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Fast‐charging capability is one of the crucial factors determining the application prospects of sodium‐ion batteries (SIBs). Nevertheless, the mismatched sodium storage kinetics and Coulombic efficiency (CE) in hard carbon anodes are bottlenecks in the implementation of fast‐charging SIBs. Herein, we propose a facile pre‐carbonization strategy
Qixin Liu +8 more
wiley +1 more source