Results 41 to 50 of about 4,190 (168)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Driven by global energy transition and sustainability, sodium‐ion batteries (SIBs) have emerged as key alternatives to lithium‐ion batteries for low‐to‐medium energy storage, because of abundant sodium resources and low cost. However, their commercialization is hindered by the lack of anodes with high capacity, fast kinetics, and long‐term ...
Shuang‐Lin Cai +13 more
wiley +1 more source
Dianci bileiqi, 2010 掺杂稀土氧化物可改变ZnO晶粒的尺寸,从而改变了等效偏析层的厚度,并分析了偏析层在导电过程中的作用。发现未掺杂试样的导电过程由晶界偏析层控制,而稀土氧化物Ce2O3、Y2O3掺杂后,由于晶粒尺寸的下降,试样的导电过程转变为界面态能级控制。因此对于多掺杂体系或小晶粒体系,应考虑偏析层对压敏陶瓷宏观的电气性能的影响。
成鹏飞, 王玉平
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New Catalysts for the Photocatalytic Reduction of Carbon Dioxide to C1 Organic Compounds [PDF]
, 2011 Photocatalytic reduction of carbon dioxide (CO2) has recently been identified as one of the five notable research areas in catalysis because it simultaneously reduces carbon emissions while storing clean, “green” solar energy in organic compounds.
Hailey, Anna
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Constructing a porous scaffold with the essential features of natural cancellous bone, including structural architecture and biochemical cues, is one of the pivotal factors for effective bone regeneration. In this study, a biomimetic composite porous Gelatin fibrous scaffold (SrHA/Gelatin) incorporating ultralong strontium‐doped hydroxyapatite
Yin‐Chuan Wang +8 more
wiley +1 more source
Guangtongxin yanjiu, 2003 文章主要介绍了用MCVD工艺及溶液掺杂法制备掺Yb3+双包层结构石英光纤的优化设计、原理及制作工艺.制作出Yb3+掺杂浓度高（吸收损耗在976nm时为2～10dB/m）、本底损耗低（在1.3μm时为10dB/km）的掺Yb3+双包层结构石英光纤.
衣永青, 宁鼎, 荆光明, 梁小红
doaj
Micromixing-assisted Fabrication and Photoelectrochemical Performance Investigation of TiO2 Photoanodes with Visible Light Response [PDF]
, 2015 基于TiO2半导体特殊的光电化学性能，其有望成为绿色、环保的新型金属防腐技术中最为重要的光阳极材料。但是，TiO2存在可见光利用率低、光量子效率不高等限制其实际应用的问题。此外，由于传统混合方式在快速沉淀体系中难以有效调控均相化学过程，导致碱性液相环境制备有序TiO2薄膜至今仍无法实现。基于上述考虑，本论文提出使用微混合设备辅助在碱性液相环境下制备出形貌可控的TiO2薄膜光阳极，并通过沉淀剂对产物进行选择性原位掺杂改性。通过数值模拟及实验测试深入研究了制备条件和掺杂对TiO2薄膜光阳极光电化学性能的影响。
许超
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
wiley +1 more source
Guangtongxin yanjiu, 1982 用氟代硼掺杂到光纤中也可使纤维的折射率降低,並能改善纤维的性质。掺氟用化合物要求沸程在0°～100℃范围,适合此沸程的氟化合物很少。提出通过代入重卤素到碳硅硫的氟化物中的方法来获得适宜的掺杂用化合物,並对这些化合物在制备上进行了探讨。最后讨论了它们在掺杂过程中所发生的反应。
袁启华 +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2017 制备了一系列Cu掺杂量不同的Fe/β(40)催化剂，并采用ICP-AES、XRD、H2-TPR、UV-vis和XPS等表征技术分析了催化剂的物化性质.结果表明，适量的铜掺杂能大大提高Fe/β(40)催化剂的低温活性，拓宽其活性温度窗口，但过量的Cu掺杂会降低催化剂的N2选择性.Cu掺杂质量比为1.27%Cu-2%Fe/β(40)的催化剂具有最佳的SCR性能，这与催化剂中存在较多离子交换位的Fe3+和Cu2+物种有关，而存在较多的CuO物种会促进氨高温氧化，使催化剂的N2选择性降低且高温窗口变窄 ...
ZHAORu(赵茹) +2 more
doaj +1 more source
Controlled Synthesis and Photocatalytical/Electrochemical Research of Transition Metal Sulfide and C3N4 Composites [PDF]
, 2016 化学掺杂（复合）和微观形貌调控是改变材料结构特征，进而改善材料性能的两种主要手段。其中化学掺杂可以改变材料本身的价带和导带的位置，调整能带结构，并且掺杂的原子或复合的半导体化合物会与原材料产生一系列的互相激发反应，在材料表面或内部引起新的化学或物理反应，从而影响物质的性质；而微观形貌调控则是直接针对材料表面，控制合成不同的表面形貌，使其暴露出的活性位点发生改变，从而改变材料表面所带的基团及其比表面积，最终影响材料的光学、热学、电学、力学或化学特性。 在化学掺杂研究中 ...
王蓉蓉
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