Results 11 to 20 of about 10,682 (112)

Phase Transition‐Induced Engineering of Fe‐N‐C Catalysts for Dual Optimization of Active Sites and Mass Transfer in Oxygen Reduction Reaction

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Fe‐N‐C electrocatalysts are considered promising alternatives to platinum‐based catalysts for advancing the development of metal–air batteries. However, the simultaneous realization of scalable synthesis, hierarchical mass‐transfer pathways, and precise regulation of Fe‐N4 sites remains challenging. Different from conventional Fe‐N‐C synthesis,
Bingye Song, Jing Lv, Zexuan Du, Mengfan Zhang, Qianzhi Gou, Hang Yang, Ran Gao, Angui Li   +7 more
wiley   +1 more source

Advances in High‐Temperature Microwave‐Absorbing Materials With Rare Metals: Preparations, Classifications, and Strategies

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT High‐temperature microwave‐absorbing materials (HTMAMs) are vital for the electromagnetic stealth of hypersonic aircraft and aerospace engines. Traditional carbon‐based or magnetic‐based absorbers suffer from oxidation, Curie‐temperature limitations, and impedance mismatch under extreme conditions.
Jing Wu, Lingfeng Yuan, Lurui Bai, Zewen Duan, Biao Zhao, Ruopeng Cui, Chunlei Wan   +6 more
wiley   +1 more source

带电更换1000 kV耐张绝缘子时的工器具和人体电场分布研究

Gaoya dianqi, 2021
利用组合工器具带电更换1 000 kV耐张绝缘子会改变绝缘子串的电压分布、影响带电工作人员体表电场分布,为分析绝缘子串不同位置进行更换作业时的整体电压和电场分布规律,文中根据实际1 000 kV耐张塔输电线路建立了三维模型,利用有限元法进行电场仿真分析;并使用子模型法重点分析了组合工具在不同位置时工具本体的最大电场值,以及人体在不同位置使用组合工具时的体表场强分布。分析结果表明,组合工具越靠近导线端,对绝缘子的电位分布及人体电场分布的影响越大,与没有组合工具短接绝缘子时进行比较,从铁塔端到靠近导线端 ...
普子恒, 徐晨, 赵伟, 方春华, 吴田   +4 more
doaj  

Synergistic Electronic Modulation of 1T/2H Mixed‐Phase MoS2 via Phosphorus Insertion and Carbon Coating for Enhanced Acidic Hydrogen Evolution Kinetics

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT MoS2 is considered a promising electrocatalyst for the hydrogen evolution reaction (HER) because of its low cost and excellent stability. However, its practical application is severely limited by the scarcity of edge active sites and poor intrinsic electrical conductivity.
Ting Wang, Ming Xu, Zhaoxing Li, Yutong Bu, Yuanze Li, Mei Liu, Ming Feng   +6 more
wiley   +1 more source

Enhanced Microwave Attenuation via Coupled Ni3ZnC0.7/Ni3InC0.5 Heterogeneous Interfaces

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT The growing complexity of electromagnetic environments places increasingly stringent demands on microwave absorbers, particularly regarding broadband attenuation, impedance matching in ultrathin configurations, and structural stability. Herein, we propose a dual nonstoichiometric carbide synergistic regulation strategy, in which Ni3ZnC0.7 and ...
Xiaomeng Jiang, Xingyun Luo, Ruilin Liu, Junchuan Ma, Cui Ni, Chuanxin Hou, Xiaoyang Yang, Yuping Zhang, Xueqin Sun, Wei Du, Xiubo Xie   +10 more
wiley   +1 more source

Oxygen Vacancy‐Engineered CoFeMo‐LDHs Enables Dual‐Reaction Pathway Synergistic Enhancement of Nanozyme Activity for Intelligent Colorimetric Sensing

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Defect engineering plays a crucial role in regulating the active sites and reaction pathways of nanozymes. In this work, oxygen vacancies (Vo) were successfully introduced and stably regulated in ternary CoFeMo layered double hydroxide (CFM LDHs) via a microwave‐assisted hydrothermal strategy, leading to the construction of oxygen‐vacancy‐rich
Min An, Weilin Zhong, Yahui Wang, Jianmin Xiao, Guilong Zhang, Geng Tian, Aizhu Wang, Xin Yu, Longwei Wang   +8 more
wiley   +1 more source

Tuned Magnetization Behavior to Promote Magnetic Softness at MHz Frequencies in Nanocrystalline Soft Magnetic Composites

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT The rapid advancement of power electronics has created an urgent demand for high‐permeability, low‐loss soft magnetic materials to unlock the full potential of wide‐bandgap semiconductors and improve the efficiency of switching‐mode power supplies.
Wenbo Xiang, Mengxing Li, Kebing Wang, Yao Ying, Jing Yu, Jingwu Zheng, Liang Qiao, Juan Li, Ji Shi, Akihisa Inoue, Shenglei Che   +10 more
wiley   +1 more source

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

Rare 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, Weiwei Xiao, Hengyi Li, Yao Han, Yanhao Dong, Chang‐An Wang   +5 more
wiley   +1 more source

盘型悬式瓷绝缘子串电路模型及电力传输特性仿真研究

Gaoya dianqi, 2020
为了给输电线路低压侧杆塔上的在线监测设备供电,提出了一种新型沿盘型悬式瓷绝缘子串进行电力传输的方法,以盘型悬式瓷绝缘子串作为能量传输的载体,将输电线路上在线取能装置获得的电能通过高频变换的方式传递杆塔一侧。文中以500 kV线路为例建立输电线路三维仿真模型,通过Maxwell矩阵计算得出绝缘子与输电线路之间的杂散电容。再通过Multisim软件搭建绝缘子串分布参数电路模型,研究电路模型的电力传输特性,分析了劣化绝缘子与杂散电容对绝缘子串能量传输特性的影响。仿真结果表明,在频率为38 ...
杨洪达, 李卫国, 李卫国, 张慧媛, 陈艳, 高泽盟, 刘骁   +6 more
doaj  

High‐Throughput Design of Efficient Dual‐Atom Catalysts Anchored on C2N for Electroreduction of CO and NH3 to Acetamide via Atomic Modeling and Machine Learning

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Electrocatalytic C–N coupling technology provides a new approach for green acetamide synthesis, which is achieved via direct reduction of carbon monoxide (CO) and ammonia (NH3). However, efficient, stable catalysts urgently need to be developed, and their reaction mechanisms elucidated.
Haonan Li, Xinhu Liang, Yibing Yang, Xiao Yang, Yi Xiao, Yan Zhang, Lili Han   +6 more
wiley   +1 more source