Results 61 to 70 of about 4,736 (178)

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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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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Electrospun Carbon Nanofiber‐Based Multifunctional Electrocatalysts for Zinc‐Air Batteries and Overall Water Splitting: Fabrication, Progress, and Perspective

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of high‐performance and stable electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) plays a critical role in advancing clean energy technologies, including metal‐air batteries and hydrogen production through overall water splitting.
Chen‐Yu Cai   +4 more
wiley   +1 more source

Acid‐Etched Co‐Vacancy‐Tunable CoFeP/N,P‐Codoped Carbon Nanocages for Highly Efficient Alkaline Water Electrolysis

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan   +6 more
wiley   +1 more source

Preparation and Research of Electrospun PVDF Gel Polymer Electrolyte [PDF]

open access: yes, 2016
凝胶态聚合物电解质是介于纯固态聚合物电解质和液态电解质的一种电解质,它既可以在常温下有较好的离子电导率,也可以一定程度地解决漏液、易燃、易爆等安全问题,因此受到了广泛关注。基于静电纺丝技术制备的聚合物纤维膜由于较高的孔隙率和较好的表面形貌,可以和有机电解液结合组成凝胶态聚合物电解质,表现出优异的电化学性能,在锂离子电池电解质领域有良好的发展前景。聚偏氟乙烯(PVDF)较高的介电常数和较低的玻璃化转变温度使它成为研究者制备聚合物电解质的常用材料之一。但是由于较高的结晶度和疏水性 ...
武晓林
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Bimetallic Mo/Fe‐Doped CoP2 Nanoleaf Array as a Bifunctional Electrocatalyst for Overall Water Splitting

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng   +6 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  

Polyoxometalates and Zeolitic Imidazolate Frameworks in Catalysis for Energy Conversion [PDF]

open access: yes, 2016
能源是当今人类必不可少的生产生活资料。自工业革命以来,人类利用化石能源取得了空前的发展和进步。时至今日,化石能源依旧占据了人类能源消耗总量的头把交椅。但随着化石能源的不断消耗,储量的日益枯竭,同时还受到政治经济环境和全球储量不平均的影响,其价格波动较大。更为重要的是,化石能源不仅在资源开采的过程中会对自然环境造成破坏,而且在使用的过程中也会产生较多的污染环境的物质。综合以上各方面因素,人类亟需开发出新型可再生能源,以取代不可再生的化石能源。 太阳能以其采集的便利、对环境的友好和取之不尽的储量 ...
张超
core  

Optimizing the Surface Coordination of Pd‐Cu Nanoalloy Through Chemical Ordering to Enhance Hydrogenation Selectivity

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Precise control of chemical ordering in bimetallic nanocatalysts offers a route to decouple activity and selectivity in acetylene hydrogenation, but direct atomic‐scale evidence linking surface order to catalytic performance is scarce. Here, we tune Pd‐Cu nanoalloys from chemically disordered to highly ordered states by composition control and
Fan Xue   +5 more
wiley   +1 more source

Solution synthesis and characterization of nickel nanosheets [PDF]

open access: yes, 2016
具有形状各向异性的镍纳米晶在催化、磁记录、生物、电极材料等诸多领域具有重要的应用价值,因此探索一种简便可靠的合成方法来制备尺寸和形貌可控的镍纳米晶具有重要的研究意义。本论文通过有机液相法合成出了镍纳米片,研究了不同的制备参数对镍纳米晶的形貌、尺寸和结构的影响,并表征了其磁学性质和催化对硝基酚还原的性能。 本文首先以油胺作为溶剂和还原剂,乙酰丙酮镍作为镍前驱体,六羰基钨作为形核诱导剂,合成出了尺寸可控的镍纳米片。在较低的反应温度(160℃)和较短的保温时间下可以得到尺寸为15nm的镍纳米片 ...
汪志超
core  

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