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Recent development in electrode design for wide-temperature supercapacitors

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Science China Chemistry 2025年第1期68卷 96-117页

作者： Jianhong Liu Qiang zhou Yuxiao Lin Xinsheng Zhao Guangmin zhou Xiaoxiao Li School of Physics and Electronic Engineering Jiangsu Normal University Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School Tsinghua University

An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs). The active electrode is one of the most important parts of SC, which is directly related to the energy density,power transmission and long-term cyclability of the device in the wide-temperature environment. Compared with the SC electrodes aimed for room-temperature application, the SC electrodes for operating at wide-temperature scene often face greater challenges. In this review, the main challenges of SC electrodes under various temperature conditions, including low, high and cross-fade temperatures, are summarized. The relevant performance decay and failure mechanisms of wide-temperature SC electrodes are analyzed. In addition, this review deals with the recent studies and developments in robust wide-temperature SC electrodes with respect to the rational design of electrode structures and the exploitation of advanced active materials. Finally, the future directions for exploring reliable wide-temperature SCs are also proposed.

关键词： supercapacitor wide-temperature electrode design active materials

改良Blalock-Taussig分流术中应用膨体聚四氟乙烯人工血管的效果与组织相容性分析

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中国组织工程研究 2022年第21期26卷 3394-3400页

作者：周世成韩宏光季芳徐莉莹张晓慧孙畅中国医科大学北部战区总医院研究生培养基地辽宁省沈阳市110016 北部战区总医院心血管外科辽宁省沈阳市110016 北部战区总医院医疗管理科辽宁省沈阳市110016

背景:改良Blalock-Taussig分流手术被普遍应用于严重的紫绀型先天性心脏病,该手术需要根据解剖结构及心肺发育的情况建立新的心内外血液循环通路,此时合适的血管替代物不可或缺。目的:评价膨体聚四氟乙烯人工血管在改良Blalock-Taussig... 详细信息

背景:改良Blalock-Taussig分流手术被普遍应用于严重的紫绀型先天性心脏病,该手术需要根据解剖结构及心肺发育的情况建立新的心内外血液循环通路,此时合适的血管替代物不可或缺。目的:评价膨体聚四氟乙烯人工血管在改良Blalock-Taussig分流术中的应用效果与组织相容性。方法:选择2009年6月至2019年12月北部战区总医院收治的复杂性先天性心脏病患者62例,年龄3个月至15岁,均采用膨体聚四氟乙烯人工血管进行改良Blalock-Taussig分流手术。根据住院及随访期间是否发生死亡分组,存活组57例,死亡组5例,对比两组并发症发生情况,采用二元Logistic回归分析造成死亡的危险因素;对于存活者,随访观察膨体聚四氟乙烯人工血管的组织相容性。结果与结论:(1)62例患者术毕Sa O2即刻升高至80%以上,紫绀显著改善,术中发生严重低心排出量综合征和心律失常8例(12.9%),其中死亡组5例均为围术期死亡,其余57例患者均完成术后1年随访;两组术后早期的床旁透析、血红蛋白尿、灌注肺发生情况比较差异有显著性意义(P<0.05);(2)二元Logistic回归分析显示,患者低体质量、术中严重低心排出量综合征是改良Blalock-Taussig分流术后患者死亡的危险因素(P<0.05);(3)随访期间,改良Blalock-Taussig分流手术改善了患者左心室和肺动脉发育,无人工管道断裂或撕脱、溶血、排斥反应、非结构性功能障碍及结构性损伤等生物学和解剖学不良反应发生;(4)结果提示,改良Blalock-Taussig分流手术治疗复杂性先天性心脏病可明显缓解症状,促进左心室与肺动脉发育,术中应用的膨体聚四氟乙烯人工血管具有良好的短期组织相容性。

关键词：先天性心脏病改良Blalock-Taussing分流术生物材料膨体聚四氟乙烯人工血管组织相容性姑息性手术危险因素

不同比例缓释尿素对海南黄牛生长性能、瘤胃发酵性状和血清指标的影响

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家畜生态学报 2023年第5期44卷 27-33页

作者：吕仁龙郑爽何德林周汉林刁彬周仕程中国热带农业科学院热带作物品种资源研究所海南儋州571737 海南大学林学院海南儋州571737 中国热带农业科学院试验场海南儋州571737 吉林省辽源市东辽县足民乡综合服务中心吉林辽源136612

研究不同比例缓释尿素添加对黄牛生长性能、瘤胃发酵性状和血清指标的影响,明确缓释尿素在黄牛日粮中的最佳补充比例和对动物机体影响。选定20头海南黄牛,平均体重为122.75 kg,分为4组,按照干物质基础设定4个水平的缓释尿素补充量:无添... 详细信息

研究不同比例缓释尿素添加对黄牛生长性能、瘤胃发酵性状和血清指标的影响,明确缓释尿素在黄牛日粮中的最佳补充比例和对动物机体影响。选定20头海南黄牛,平均体重为122.75 kg,分为4组,按照干物质基础设定4个水平的缓释尿素补充量:无添加组(对照组)、0.25%添加组(处理Ⅰ)、0.50%添加组(处理Ⅱ)和0.75%添加组(处理Ⅲ),以混合日粮方式投喂,饲养90 d。试验结果显示,生长性能方面,在0.5%添加组中,尽管采食量与对照组没有显著差异(P>0.05),但表现了最高的总增重和平均日增重。在0.75%添加组中,明显降低了日采食量和平均日增重(P<0.05)。瘤胃发酵性状方面,缓释尿素的添加对4个处理组中的瘤胃发酵性状没有产生负面影响,但随着尿素添加量的增加显著提升了瘤胃液pH(P<0.05),降低了乙酸和丙酸浓度(P<0.05)。血清指标方面,饲喂前,随缓释尿素添加量的增加血清尿素浓度逐渐降低(P<0.05),总蛋白含量逐渐升高,而在饲喂后,显著提升了血尿素含量和白蛋白含量(P<0.05)。综上,在海南黄牛日粮中补充0.5%缓释尿素可以显著提升生长性能,且对血清指标和瘤胃发酵性状没有产生负面影响。

关键词：黄牛缓释尿素生长性能瘤胃发酵性状血清指标

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紫外光活化低温键合研究进展

机械工程学报 2022年第2期58卷 122-135页

作者：王晨曦戚晓芸方慧康秋实周诗承许继开田艳红哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨150001

随着电子及生物医疗元器件朝着微型化、便携式及多功能性的发展,连接(电子领域内常被称为“键合”)已成为材料或结构一体化集成不可或缺的关键环节。表面活化键合避免了传统焊接工艺中的高温,能够在较低温度条件下使热膨胀差异较大的材... 详细信息

随着电子及生物医疗元器件朝着微型化、便携式及多功能性的发展,连接(电子领域内常被称为“键合”)已成为材料或结构一体化集成不可或缺的关键环节。表面活化键合避免了传统焊接工艺中的高温,能够在较低温度条件下使热膨胀差异较大的材料或结构实现可靠连接,在微电子、微机电系统、光电子及微流控芯片等制造领域极具应用潜力,其中紫外光作为一种简易高效的表面活化手段近年来备受关注。本文对紫外光活化低温键合相关的研究进展进行综述,主要介绍了紫外光的基本性质,对有机及无机材料基板表面的作用效果,总结了面向微电子、微机电系统和光电子器件制造的紫外光表面活化晶圆键合成果,以及其在微流控器件封接、医用可植入器件制备中的应用实例,最后对该键合方法的未来发展和挑战进行了展望。

关键词：紫外光表面活化低温连接晶圆键合键合界面

Dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

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Science China Chemistry 2025年第1期68卷 12-14页

作者： Wei-Lei zhou Siwei Wang Yong Chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules Innovation Team of Optical Functional Molecular Devices Inner Mongolia Minzu University College of Chemistry Nankai University

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties [1]. Particularly, two-dimensional (2D) materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry [2,3].

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Fine-tuning the spatial allocation of phytohormones for smart canopy, smart breeding, and smart agriculture

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Science China Life Sciences 2025年第1期68卷 309-310页

作者： Tao zhou Lin Li National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University HuBei HongShan Laboratory

The dual challenges of global climate change and population growth have increased demand for higher crop yields per unit area. The innovative technology of smart agriculture aims to synergize breeding, cultivation, and production through the application of biological and informatics technologies. Historically, the “Green Revolution” introduced semidwarf varieties of certain key crops by utilizing mutations affecting gibberellin pathways, which significantly increased planting densities and yields.

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Microstructure and Wear/corrosion Resistance of Stainless Steel Laser-alloyed with Mn+W_(2)C, Mn+NiWC and Mn+SiC

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 283-294页

作者： zhou Rui DIAO Xiaogang SUN Yixin School of Metallurgical Engineering Jiangsu University of Science and TechnologyZhangjiagang 215600China CITIC Heavy Cast Iron Industry Co. Ltd.Luoyang 417039China

In-situ formed high Mn steel coating reinforced by carbides was formed by laser surface alloying(LSA).Laser alloyed layers on 1Cr18Ni9Ti steel with Mn+W_(2)C(specimen A),Mn+NiWC(specimen B)and Mn+SiC(specimen C)powders were fabricated to improve the wear and corrosion behavior of 1Cr18Ni9Ti steel blades in high speed *** evolution,phases,element distribution,microhardness,wear and corrosion behavior of the laser alloyed layers were *** indicated that high Mn steel matrix composites with undissolved W_(2)C,WC and other in-situ formed carbides were formed by LSA with Mn+W_(2)C and Mn+NiWC while SiC totally dissolved into the high Mn matrix when adding Mn+*** as the binding phase in Ni-WC powder decreased the crack sensitivity of the alloyed layer as compared with the addition of W_(2)C *** improvement in average microhardness was achieved in the matrix in specimen A,B and C,with the value of 615,602 and 277 HV_(0.5),while that of the substrate was 212 HV_(0.5).The increase of microhardness,wear and corrosion resistance is highly corelated to microstructure,formed phases,type and content of carbides,micro-hardness and toughness of the alloyed layers.

关键词： laser surface alloying stainless steel carbide type microstructure wear and corrosion resistance

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激光产生的钴离子体x射线发射光谱

光学学报 1987年第4期7卷 324-334页

作者：张正泉范品忠赵世诚周锦智金仁山中国科学院长春光学精密机械研究所

用TlAP平晶谱仪记录了8～15波长范围内钴的激光等离子体X射线发射光谱。根据等离子数序离子光谱的规律性,识别和归类了其中大部分谱线,它们分别属于类钠至类锂之间各电离级离子跃迁。

关键词： X射线光谱激光等离子体晶体谱仪

Distributed fiber optic sensing system for vibration monitoring of 3D printed bridges

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Optoelectronics Letters 2025年第1期21卷 28-34页

作者： ZHAO Shuai zhou Ran LUO Mingming LIU Jianfei LIU Xiongfei zhou Tao School of Electronic Information Engineering Hebei University of Technology Tianjin Key Laboratory of Electronic Materials and Devices School of Civil Engineering and Transportation Hebei University of Technology Tianjin Jinhang Institute of Technical Physics

The fiber optic sensing technology provides data support in structural health monitoring of the macro facilities, including design, construction, and maintenance of bridges, tunnels, ports and other infrastructures. In this paper, a distributed vibration sensing system is proved to be responsive to a single touch over a 1.8-m-long equivalent fiber segment, covering a vibration frequency from 5 Hz to 25 kHz. The sensing fiber was arranged as an S type layout on the bridge to recognize the standing state, windblown disturbance, and walking vibration. Moreover, the knocking and climbing events are recognized fiber laying spinning lines and hanging on the fences, respectively. The demonstration shows an accurate positioning and sensitive vibration monitoring applied on the automated three-dimensional(3D) printed bridge, which is applicable to all kinds of 3D printed facilities as intelligent sensory neuro-networks.

关键词： Spinning (fibers)