Author Affiliations
Abstract
1 Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
2 Department of Materials Science and Engineering, and Center of Super-Diamond and Advanced Films, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong Hong Kong SAR, People’s Republic of China
3 Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon Hong Kong SAR, People’s Republic of China
4 Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing, People’s Republic of China
With the merits of the high energy density of batteries and power density of supercapacitors, the aqueous Zn-ion hybrid supercapacitors emerge as a promising candidate for applications where both rapid energy delivery and moderate energy storage are required. However, the narrow electrochemical window of aqueous electrolytes induces severe side reactions on the Zn metal anode and shortens its lifespan. It also limits the operation voltage and energy density of the Zn-ion hybrid supercapacitors. Using ‘water in salt’ electrolytes can effectively broaden their electrochemical windows, but this is at the expense of high cost, low ionic conductivity, and narrow temperature compatibility, compromising the electrochemical performance of the Zn-ion hybrid supercapacitors. Thus, designing a new electrolyte to balance these factors towards high-performance Zn-ion hybrid supercapacitors is urgent and necessary. We developed a dilute water/acetonitrile electrolyte (0.5 m Zn(CF3SO3)2 + 1 m LiTFSI-H2O/AN) for Zn-ion hybrid supercapacitors, which simultaneously exhibited expanded electrochemical window, decent ionic conductivity, and broad temperature compatibility. In this electrolyte, the hydration shells and hydrogen bonds are significantly modulated by the acetonitrile and TFSI- anions. As a result, a Zn-ion hybrid supercapacitor with such an electrolyte demonstrates a high operating voltage up to 2.2 V and long lifespan beyond 120,000 cycles.
Nano-Micro Letters
2024, 16(1): 161
Mingyuan Ye 1†Xiaorui Hao 2†Jinfeng Zeng 3Lin Li 4,*[ ... ]Yuhan Wu 1,6,****
Author Affiliations
Abstract
1 School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang 110870, China
2 College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
3 College of Pharmacy, Xinjiang Medical University, Engineering Research Center of Xinjiang and Central Asian Medicine Resources (Ministry of Education), Urumqi 830000, China
4 Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
5 School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China
6 Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
Anode materials are an essential part of lithium-ion batteries (LIBs), which determine the performance and safety of LIBs. Currently, graphite, as the anode material of commercial LIBs, is limited by its low theoretical capacity of 372 mA·h·g?1, thus hindering further development toward high-capacity and large-scale applications. Alkaline earth metal iron-based oxides are considered a promising candidate to replace graphite because of their low preparation cost, good thermal stability, superior stability, and high electrochemical performance. Nonetheless, many issues and challenges remain to be addressed. Herein, we systematically summarize the research progress of alkaline earth metal iron-based oxides as LIB anodes. Meanwhile, the material and structural properties, synthesis methods, electrochemical reaction mechanisms, and improvement strategies are introduced. Finally, existing challenges and future research directions are discussed to accelerate their practical application in commercial LIBs.
alkali-earth metal iron-based oxides anodes lithium-ion batteries electrochemical energy storage 
Journal of Semiconductors
2024, 45(2): 021801
陈瑞 1,2,3,***†刘瑞 1,2,3†王鹏飞 2林航 1,2,*[ ... ]王元生 2
作者单位
摘要
1 福州大学 化学学院, 福建 福州  350108
2 中国科学院福建物质结构研究所 中国科学院功能纳米材料结构设计与组装重点实验室, 福建 福州  350002
3 中国科学院大学 福建学院, 福建 福州  350002
自从尺寸依赖的上转换荧光热增强现象在稀土激活的纳米荧光材料中被发现以来,开发具有显著荧光热增强效应的稀土荧光材料俨然成为了一个研究热点。近期的探索发现荧光热增强效应在非纳米尺度稀土荧光材料体系以及非上转换发光过程中均可实现,这进一步拓展了这一有趣光学现象的应用场景。本文总结和归纳了稀土激活荧光热增强材料的最新研究进展,概述了所提出的几类机理以及稀土荧光热增强材料的潜在应用场景,并展望了该类材料的研究发展方向。
稀土激活发光材料 荧光热增强 纳米材料 上转换发光 rare earth activated luminescence materials luminescence thermal enhancement nanomaterials up-conversion luminescence 
发光学报
2024, 45(3): 383
史丽娜 1,2王鹏飞 1,*刘俊标 1,2,**王岩 1[ ... ]韩立 1,2
作者单位
摘要
1 中国科学院电工研究所,北京 100190
2 中国科学院大学,北京 100049
环境扫描电子显微镜(ESEM)能够在低真空环境模式下对含水、含油以及生物等样品进行高分辨率观测。由于电子束通道与样品室间存在着极大的真空压差,采用真空差分结构会导致出现物镜的工作距离增加、偏转范围缩小、电子束和气体碰撞概率增加等问题,最终影响成像分辨率和效率。针对这些问题,本文从电子光学理论出发,综合考虑了ESEM中物镜结构和真空差分结构,将两者结合在一起进行优化设计,提出了一种具有可变真空结构的物镜设计方法,并搭建了实验平台,开展了物镜磁场测试、真空压差测试和分辨率测试。测试结果表明,在目前实验条件和133 Pa的低真空环境模式下,工作距离为15 mm时,20 μm×20 μm的扫描场对应的成像分辨率优于50 nm。
电子光学 物镜 可变真空结构 压差光阑 节流管 
光学学报
2024, 44(5): 0522002
Author Affiliations
Abstract
1 State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi’an 710119, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3 College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
Silicon waveguides typically exhibit optical anisotropy, which leads to polarization correlation and single-polarization operations. This consequently creates a demand for polarization-control devices. This paper introduces a CMOS-compatible O-band reconfigurable TE/TM polarization rotator comprising two symmetrical polarization rotator–splitters and phase shifters. This configuration enables dynamic conversion of any linear polarization to its quadratic equivalent. Experimental results indicate that the reconfigurable polarization rotator exhibits an insertion loss of less than 1.5 dB. Furthermore, the bandwidth for a polarization extinction ratio beyond 15 dB exceeds 60 nm.
silicon-based optoelectronics polarization rotation polarization switch 
Chinese Optics Letters
2024, 22(1): 011303
作者单位
摘要
1 中国科学院电工研究所,北京 100190
2 中国科学院大学,北京 100049
目前,国产大功率端窗X射线管存在束流和功率小于设计值的问题。从热电子发射理论和空间电荷受限发射理论出发,对大功率端窗X射线管的束流进行优化研究。在理论仿真中,计算两种理论模型下的电子束轨迹、束流大小和靶面焦斑。计算分析表明,现有问题主要是灯丝附近的电势分布不合理造成的。基于这一分析,对现有结构提出两种优化方案:一种不改变现有结构仅通过改变灯丝电势来克服灯丝附近的空间电荷效应;另一种通过改变灯丝位置来使灯丝附近的加速电压分布更加合理。基于这两种优化方案,再次进行仿真计算,计算结果显示,两种方案可以有效提高现有大功率X射线管的束流。最后设计了验证性实验,测得了该结构在额定最大灯丝电流下的温度限制束流大小,并验证了仿真计算的准确性,同时也验证了提出的两种优化方案的可行性。
X射线源 空间电荷限制 热电子发射 性能优化 
光学学报
2023, 43(22): 2234001
王鹏飞 1程威 1苍昭 2田庄 2[ ... ]恽斌峰 1,*
作者单位
摘要
1 东南大学先进光子学中心,江苏 南京 210096
2 东南大学电子科学与工程学院,江苏 南京 210096
基于微环谐振腔的微波光子滤波器(MPF)以其优异的可调谐特性得到了广泛关注和研究,但通常微环的带宽决定了所实现的MPF带宽,进而限制了滤波分辨率。本文提出并验证了一种基于三微环级联的MPF,相比单个微环,通过多引入两个微环谐振腔,使光载波与±1阶光边带拍频后的相位差谱从0~π变得更陡峭,从而实现了MPF带宽压缩。实验结果表明,本文提出的基于级联三微环的MPF在不提升微环本身Q值的前提下,相比基于单微环的MPF,滤波带宽压缩了约69%,3 dB衰减斜率提高了约3.6倍,实现了更精细的滤波;另外,该MPF还实现了11.5~20.3 GHz的频率连续调谐和187.1~1597.0 MHz的带宽连续调谐。
集成光学 微环谐振腔 微波光子滤波器 带宽 可调谐性 
光学学报
2023, 43(22): 2213001
Author Affiliations
Abstract
Centre for THz Research, China Jiliang University, Hangzhou 310018, China
We propose and experimentally demonstrate a high quality (Q)-factor all-silicon bound state in the continuum (BIC) metasurface with an imperforated air-hole array. The metasurface supports two polarization-insensitive BICs originated from guided mode resonances (GMRs) in the frequency range of 0.4 to 0.6 THz, and the measured Q-factors of the two GMRs are as high as 334 and 152, respectively. In addition, the influence of the thickness of the silicon substrate on the two resonances is analyzed in detail. The proposed all-silicon THz metasurface has great potential in the design and application of high-Q metasurfaces.
bound state in the continuum all-silicon metasurface high-quality factor terahertz 
Chinese Optics Letters
2023, 21(11): 113601
李生武 1,2万瑞 1,2马园 1,2曹欣 1,2[ ... ]王鹏飞 1,2,*
作者单位
摘要
1 中国科学院 西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室,西安 710119
2 中国科学院大学 材料科学与光电技术学院,北京 100045
3 西安交通大学 电子与信息学部,西安 710049
激光驱动惯性约束聚变(ICF),因有望解决全球能源危机问题而备受瞩目。然而,熔石英作为ICF装置终端光学组件中一类重要的功能性紫外元件,其高能激光诱导损伤问题成为限制ICF装置输出能量向更高更强方向发展的关键因素。因此,ICF装置负载能力继续提升对新型高抗强激光损伤紫外元件提出重大应用需求。综述了中国科学院西安光学精密机械研究所研制的紫外氟磷玻璃在高能紫外激光损伤方面的研究现状,并分析了现存的实际问题,最后对高抗损伤紫外氟磷玻璃的发展方向进行了展望。
惯性约束聚变 激光诱导损伤 氟磷玻璃 inertial confinement fusion laser-induced damage fluorophosphate glass 
强激光与粒子束
2023, 35(8): 081002
作者单位
摘要
哈尔滨工程大学 纤维集成光学教育部重点实验室,黑龙江 哈尔滨 150001
3~5 μm波段包含了大气的传输窗口和许多气体分子的吸收带,因而3~5 μm中红外光纤激光器在大气遥感、生物医学、材料加工等领域具有广阔的应用前景。近年来,中红外光纤激光器的输出波长不断向长波长扩展,而实现中红外光纤激光输出的关键在于增益光纤材料的选择。氟铟基玻璃具有较宽的中红外透过窗口和较低的声子能量,因而氟铟基玻璃可以作为增益光纤材料应用于中红外光纤激光器领域。文中综述了从20世纪80年代至今,稀土离子掺杂氟铟基玻璃及氟铟基光纤激光器的代表性研究成果,回顾了氟铟基玻璃组分和玻璃结构的研究历程,介绍了氟铟基光纤的制备工艺,简述了稀土离子掺杂氟铟基玻璃和稀土离子掺杂氟铟基光纤激光器的最新研究进展。2018年,加拿大拉瓦尔大学的Maes等人利用Ho3+掺杂氟铟基光纤作为增益介质,在中红外光纤激光器研究领域取得突破性进展,在室温下获得了输出功率接近200 mW的3.92 μm光纤激光输出。最近,利用1150 nm激光作为泵浦源以及自研的Ho3+/Pr3+共掺杂氟铟基光纤作为增益介质,实现了~2.9 μm波段中红外光纤激光输出,其最大输出功率为1.075 W,相应斜率效率为17.6%。未来,通过制备双包层氟铟基光纤和氟铟基光纤光栅,有望搭建全光纤化中红外光纤激光器,实现更高功率的3~4 μm波段中红外光纤激光输出。
中红外激光 氟铟基玻璃 氟铟基光纤 Ho3+掺杂 mid-infrared laser fluoroindate glass fluoroindate fiber Ho3+ doped 
红外与激光工程
2023, 52(5): 20230149

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