Results 71 to 80 of about 18,083 (197)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo +9 more
wiley +1 more source
Investigation on atomic layer deposition of HfOxNy film and its resistive switching device [PDF]
, 2017 随着半导体技术的不断发展，目前占据非易失性存储器市场主流的闪存存储器由于器件等比例缩小带来的电荷泄漏、可靠性差等一系列难以克服的问题发展受到制约。近年来一种新型阻变存储器（RRAM）的研究正得到广泛关注，有望成为下一代主流非挥发存储器。与传统存储器相比，RRAM具有结构简单、存储密度高和功耗低等优势。尽管阻变特性在过渡金属氧化物、氮化物、硫系材料和非晶硅等材料体系中都得到广泛研究，但是基于氮氧化物的阻变特性研究还较为缺乏。氮氧化物与CMOS工艺兼容，热稳定性好。本论文选取HfOxNy作为阻变功能材料 ...
余珏
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of efficient and stable bifunctional electrocatalysts is a key challenge for the industrialization of hydrogen production by water electrolysis. In this work, Co‐doped NiS/Ni3S2 heterostructured nanowire arrays (Co–NiS/Ni3S2 NA) were successfully constructed by precisely modulating the phase‐selective behavior of nickel ...
Xing‐Hang Liu +2 more
wiley +1 more source
The study of chemical vapor deposition graphene growth mechanism based on isotope labelling technique [PDF]
, 2016 石墨烯是一种只由单个碳原子层构成的理想二维材料，自2004年首次被Novoselov等人采用胶带法从高定向热解石墨表面剥离出来后，其高电子迁移率，高热导，高硬度，高透光率等一系列独特优异的物理化学性质就不断被揭示，近十几年来一直保持着其研究热点的领先地位，同时还带动了其他二维层状材料的研究热潮。 目前石墨烯主要的制备方法分为以下四类：机械剥离法、氧化还原法、碳化硅外延法和化学气相沉积法；其中化学气相沉积法在生长高质量大面积石墨烯方面表现出很大的优势，尤其是在铜衬底上已获得30英寸的大尺寸单层石墨烯 ...
黎琼钰
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang +5 more
wiley +1 more source
The Influence of Metallurgy process on Impurity Distribution and Electrical Properties of UMG-Si [PDF]
, 2013 硅是太阳电池的主要原料，其杂质的含量和分布直接影响太阳电池的发电效率和使用寿命。研究冶金工艺对高纯硅中杂质分布及电学性能的影响具有重要的意义。 本文以两种不同的冶金工艺对工业硅进行预处理，最后通过真空定向凝固制备多晶硅锭，分析和研究两铸锭的宏观形貌、微观结构特征，探讨两铸锭中主要杂质元素的分布规律，通过计算铸锭不同高度理论值和实测值来分析杂质去除机制，最后结合电学性能测试来讨论杂质和晶体学缺陷对铸锭电阻率、导电类型、少子寿命的影响。主要研究结果如下： 1、采用两种不同工艺（A：真空-造渣-酸洗、B：造渣-
余德钦
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Platinum (Pt)‐based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis ...
Chenyang Shu +9 more
wiley +1 more source
基于改进VIKOR 算法的梯次利用电池电网储能场景适用性评价方法 [PDF]
全球能源互联网快速发展的电动汽车带来了巨量的退役动力电池，但其梯次利用场景缺乏科学的甄选方法。研究了梯次利用电池电网储能场景适用性评价方法。首先，从技术性能、经济性能和安全性能3个维度，构建了综合考虑电池运行状态、储能配置经济效益和梯次利用安全风险的梯次利用电池电网储能场景适用性评价指标体系。其次，采用多属性群决策方法优化设定评价维度权重，采用CRITIC法和熵权法形成组合赋权法对评价指标进行权重设置，设计了基于改进VIKOR算法的应用场景适用性评价算法。最后，针对峰谷套利 ...
谢桦, 刘哲, 孔德鹏, 雷博
doaj +1 more source
Production of graphene nanosheets by supercritical CO2 technology coupled with mechanical exfoliation [PDF]
, 2017 石墨烯因其优异的力学、热学、电学以及光学等性能，在电子器件、航天设备、生物传感器以及高性能复合材料等领域都有着巨大的应用前景，自2004年发现以来就引起了全世界科研工作者的密切关注。如何制备出高质量的单层或少层石墨烯成为当务之急。本论文提出了一种超临界二氧化碳技术结合机械剥离制备石墨烯的方法，获得了单层和少层的石墨烯，详细研究了操作参数对石墨烯产率的影响，确定了最优的制备条件，并通过表征手段对石墨烯进行了分析，探讨了整个制备过程的机理。 首先 ...
尚天宇
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source