Results 1 to 10 of about 10,674 (119)

Low‐Temperature Solid‐State Sintering of High‐Strength and Electrically Conductive Silicon Carbide With Direct Current Flow and In Situ Graphitization

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Silicon carbide (SiC) is an ultra‐hard ceramic material and is intrinsically difficult to sinter. Pressureless solid‐state sintering (PS) typically requires high temperatures exceeding 2200°C and a prolonged heating cycle, whereas liquid‐phase sintering lowers the processing temperature at the expense of high‐temperature mechanical performance.
Meicen Fan   +5 more
wiley   +1 more source

Functionalized Silica‐Constructed Self‐Supporting Composite Separator for Lithium Metal Batteries

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
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

Lanthanide Nanoparticles With Dual Enzyme Mimetic Activities for Targeted Treatment of Gram‐Negative Bacterial Infections

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Gram‐negative (G−) bacterial infections, fueled by intrinsic antibiotic resistance stemming from their unique outer membrane architecture, pose a critical global clinical challenge. This study introduces a pioneering dual‐enzyme‐mimetic nanotherapy based on NaYbF4 nanoparticles (NaYbF4 NPs) that achieves synergistic antibacterial and anti ...
Yuxiang Zhang   +6 more
wiley   +1 more source

Biomass‐Derived Laser‐Induced Graphene: From Precursor Chemistry to Device Integration

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Laser direct writing provides a mask‐free route for converting suitable carbon‐containing precursors into patterned, porous, and conductive laser‐induced graphene (LIG) networks. Although LIG was initially demonstrated mainly using aromatic synthetic polymers, such as polyimide, biomass precursors introduce renewable feedstocks with highly ...
Wanjun Yin   +10 more
wiley   +1 more source

VO2 Hollow Nano‐Reactor: Enabling Near‐Room‐Temperature and Ultrafast Hydrogen Release From α‐AlH3

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT α‐phase aluminum trihydride (α‐AlH3) is a promising high‐capacity hydrogen storage material, but its practical application is limited by slow dehydrogenation kinetics and high reaction temperatures. This study demonstrates, for the first time, effective modulation of the hydrogen release kinetics of AlH3 by employing a hollow nanostructured ...
Haoyuan Zheng   +8 more
wiley   +1 more source

330kV和750kV地线导弧间隙放电和灭弧性能研究

open access: yesDianci bileiqi, 2013
由于地线导弧间隙在运行中存在放电分散性大,灭弧能力随机性强等问题,为了优化和改善330 kV和750 kV输电线路架空地线导弧间隙的放电特性和灭弧性能,对目前工程上使用的不同类型的地线导弧间隙进行了工频放电电压特性、雷电冲击伏秒特性和操作冲击伏秒特性试验以及灭弧性能试验研究。结果表明,在330 kV和750 kV系统中使用的间隙距离下,导弧间隙满足在工频过电压和操作过电压下不放电而在雷电过电压下可靠放电的要求;灭弧性能试验表明电流幅值过小或过大均会使导弧间隙灭弧时间变长,重燃率增加 ...
刘强, 郭洁, 解秀余, 张汇博
doaj  

Multifunctional Integration in a Monolithic Biomass Carbon: A Triple‐Synergistic Host for Advanced Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Lithium–sulfur (Li–S) batteries are promising for next‐generation high‐energy‐storage systems but are hindered by polysulfide shuttle, sluggish kinetics, and volume expansion. Conventional carbon hosts struggle to simultaneously anchor and convert polysulfides efficiently.
Ling Chen, Peng Xu, Jiaojing Shao
wiley   +1 more source

基于深度残差网络的GIS局部放电模式识别技术研究

open access: yesGaoya dianqi, 2018
气体绝缘电器(gas insulated switchgear,GIS)内部绝缘缺陷产生的局部放电(partial discharge,PD)特征表现较复杂,传统局部放电模式识别方法因特征选取具有较强的主观性,其放电类型分类的准确性和鲁棒性均较差。针对这一问题,文中将局部放电的PRPD数据转化为局部放电灰度图,构建深度残差网络对局部放电灰度图进行自适应特征提取,深度挖掘放电灰度图中不同局部放电类型的特征模式,实现局部放电模式的识别,实际实验表明 ...
贾勇勇   +5 more
doaj  

Divergent Electrochemical Behaviors of O2 and O3 Phases in Li‐Rich Layered Oxides

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Lithium‐ion batteries (LIBs) have dominated the landscape of electrochemical energy storage for decades. The growing market demands for higher energy densities are pushing against the limitations of conventional cathode materials. Li‐rich layered oxides (LLOs) present a promising path forward by harnessing both cationic and anionic redox ...
Juncheng Huang   +9 more
wiley   +1 more source

油纸绝缘沿面放电小波矩特征信息提取及其过程划分

open access: yesGaoya dianqi, 2015
油纸绝缘沿面放电是变压器内局部放电的主要形式,研究其产生及发展特性,能有效诊断运行变压器的潜伏性缺陷。笔者基于典型油纸绝缘沿面放电模型,采用恒压法开展局部放电发展特性试验研究。采集沿面放电发展过程中不同时刻的信号样本,提取了不同阶段沿面放电灰度图像的小波矩特征参量。对新特征参量进行无监督聚类分析,聚类结果结合不同时刻的信息将沿面放电发展过程分为初始、发展、稳定、预击穿4个阶段,为沿面放电发展特性研究提出了一种新的方法。
杜杰   +6 more
doaj  

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