Results 61 to 70 of about 5,396 (208)

氢燃料电池发展的现状与挑战 [PDF]

open access: yes, 2021
本条目为“厦门大学美洲校友会校庆百年论坛”的演示文稿。叶思宇教授是厦门大学1978级化学系校友,1988年获电化学专业博士学位,毕业后赴德国杜伊斯堡大学和加拿大魁北克大学从事博士后研究工作,2000年受邀加入加拿大巴拉德动力系统公司。因在抗反极催化剂研发和其他领域的杰出贡献,2002年被破格提拔为巴拉德公司首席科学家。2018年当选加拿大国家工程院院士,在电化学尤其是燃料电池领域具有30余年研发和产业化经验,是国际公认的燃料电池电催化和膜电极首屈一指的领军人物,为现代燃料电池的发展做出了杰出贡献 ...
叶思宇
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Engineering a Tumor‐Targeted MgH2@Lip/PD‐L1 Nanoplatform for Synergistic Hydrogen Therapy and Immune Activation

open access: yesRare Metals, EarlyView.
ABSTRACT Lung cancer remains the leading cause of cancer‐related deaths worldwide, yet immune checkpoint blockade (ICB) is often compromised by an immunosuppressive tumor microenvironment (TME) with acidosis, hypoxia, and poor T cell infiltration. Here, we develop a TME‐responsive nanoplatform (MgH2@Lip/PD‐L1) that couples hydrogen gas therapy with PD ...
Xuyu Gu   +5 more
wiley   +1 more source

β-二氢青蒿素-大黄素复合物对人胃癌细胞株SGC-7901作用的实验研究

open access: yesZhongguo shiyan zhenduanxue, 2020
目的探讨β-二氢青蒿素-大黄素复合物能否诱导人胃癌SGC-7901细胞凋亡及相关作用机制。方法四唑盐(MTT)比色法检测β-二氢青蒿素-大黄素复合物对SGC-7901细胞的抗增殖及细胞毒作用、Hoechst33258荧光染色和HE染色观察细胞凋亡的形态学改变、AnnexinV-PI双染法检测凋亡、Western Blotting方法检测CyclinD1和Ki-67蛋白的表达变化。结果 MTT结果β-二氢青蒿素-大黄素复合物对SGC-7901细胞抑制作用显著,且呈浓度和时间依赖性 ...
辛悦   +4 more
doaj  

Non‐Precious Metals Enhance Hydrogen Evolution in COF/Cd0.9Cu0.1S S‐Scheme Heterojunctions: KPFM Reveals Charge Transfer Pathways

open access: yesRare Metals, EarlyView.
ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao   +3 more
wiley   +1 more source

Preparation of CIGS Thin Film Solar Cell Absorber from Non-vaccum Nanoparticle Inks [PDF]

open access: yes, 2015
在低成本高效率太阳电池的开发体系中,Ⅰ-Ⅲ-Ⅵ2族化合物如铜铟硒(CISe)、铜铟镓硒(CIGS)等是其中极具发展前景的一类太阳电池材料,它具有以下优点:是一种直接带隙材料,光吸收系数高、长期辐照下稳定性好、光电转换效率高等等。然而,当前制备高效率的CIGS电池需要高真空的制程工艺,如共蒸发工艺或溅射工艺,但是这些工艺都不可避免涉及到高温和复杂设备等因素导致的高成本,而采用纳米粒子墨水法制备CIGS太阳电池吸收层,可以有效避免高真空制程工艺带来的问题 ...
崔鑫
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Atomic Synergy of Vacancy‐Engineered Layered Double Hydroxide/Heteroatom‐Doped Carbon Quantum Dots for Bifunctional Oxygen Electrocatalysis in Zn–Air Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang   +4 more
wiley   +1 more source

Electronic structures and thermoelectric properties of several wide-band-gap semiconductors [PDF]

open access: yes, 2016
由于化石能源的飞速消耗以及人类在应用化石能源过程中造成的环境污染,开发清洁可持续的新能源成为研究热点,热电作为新能源开发中的一员,在研究中遇到的主要问题是材料的热电转换效率难以提高。本文的主要工作是以第一性原理为基础,以SiC,GaN,ZnO等几种宽禁带半导体为对象,研究宽禁带半导体材料结构变化与其热电效率高低的关系。通过Quantumespresso和WIEN2k计算材料的电子结构,再用Boltztrap软件计算材料的热电性质,我们可以比较不同结构的同种化合物热电性质的变化情况,并找出定性的规律 ...
黄政
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In Situ Fabrication of Sulfate‐Grafted Mo‐Doped NiOOH for Electrocatalytic Methanol Oxidation Coupled With Hydrogen Production at Industrial‐Level Current Density

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Developing efficient and sustainable energy conversion technologies is crucial for addressing the global energy and environmental challenges. As a promising clean energy conversion strategy, the electrocatalytic methanol oxidation coupled with cathodic hydrogen production provides a pivotal path to solve the above problems.
Tao Chen   +4 more
wiley   +1 more source

Hydrogen atom spectrum with Gaussian potential in noncommutative space(非对易空间下高斯势中的氢原子能谱)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2019
利用Moyal-Weyl 星乘和Bopp 变换,在微扰论下对非对易空间条件下高斯势中的氢原子能级进行了修正,通过优化高斯势的参数得到能级修正的极值,为探测非对易时空参量提供了新的可能方案。
LIYelei(李叶磊)   +2 more
doaj   +1 more source

The Study of Fabrication Technology for Absorption Layer and Mo Electrode based CIGS Thin-Film Solar Cell [PDF]

open access: yes, 2015
铜铟镓硒薄膜太阳电池是现今薄膜太阳电池领域发展前景最好的电池之一。在当前的薄膜电池产业化领域中,溅射后硒化技术适合于大面积规模化制备CIGS薄膜电池。本论文分两部分内容,第一部分是围绕溅射后硒化法两步工艺制备高质量的Cu(In1-xGax)Se2(CIGS)薄膜,并对CIGS薄膜性能进行了研究。第二部分是,在CIGS吸收层与Mo电极整合过程中,系统研究了Mo电极的制备工艺在硒化热处理中存在的技术问题。 第一部分利用CuGa(3:1at%)合金靶和单质In靶双靶交替磁控溅射制备CuInGa金属预制层 ...
陈伟
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