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Activation of biomass-derived porous carbon for supercapacitors:A review

Chinese Chemical Letters 2024年第7期35卷 121-138页

作者： Zixuan Guo xiaoshuai han Chunmei Zhang Shuijian He Kunming Liu Jiapeng Hu Weisen Yang Shaoju Jian Shaohua Jiang Gaigai Duan Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Institute of Materials Science and Devices Suzhou University of Science and TechnologySuzhou 215009China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China Fujian Provincial Key Laboratory of Eco-Industrial Green Technology Key Laboratory of Green Chemical Technology of Fujian Province UniversityCollege of Ecological and Resources EngineeringWuyi UniversityWuyishan 354300China

Due to the advantages of renewable,low pollution and wide distribution of biomass resources,it is selected as the electrode material for *** carbon-based electrode materials,specific surface area and pore structure have a great *** and summarizing the influence of activation on pore structure will greatly broaden this *** on the activation mechanism of activator,this paper summarizes the latest progress of biomass activation applied to supercapacitors,including traditional physical and chemical activation methods and non-traditional methods such as biological activation method,self-activation method,template assisted activation method and green activator ***,the challenges,strategies and prospects for the future development of biomass-derived carbon material activation are pointed *** summary,this review will help researchers choose appropriate strategies to design biomass-derived carbon electrode materials for supercapacitors,thereby promoting the application of biomass materials.

关键词： Biomass-derived Activation Pore structure Electrochemistry Supercapacitor

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Preparation and properties of hydrophobic and transparent wood

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Journal of Bioresources and Bioproducts 2022年第4期7卷 295-305页

作者： Linhu Ding xiaoshuai han Lian Chen Shaohua Jiang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China

Natural wood(NW)was treated with sodium chlorite to obtain delignified wood(DW)in this study,then epoxy was impregnated to get transparent wood(TW),and finally the TW was coated with perfluorodecyltriethoxysilane(FAS)to acquire hydrophobic and transparent wood(HTW).The hydroxyl group generated by the hydrolysis of the FAS and the hydroxyl group of the epoxy underwent a dehydration condensation reaction to generate a Si-O-C bond,while the FAS molecules were also dehydrated and condensed to form a Si-O-Si bond according to Fourier transform infrared(FT-IR)spectroscopy and X-ray photoelectron spectroscopy(XPS).Therefore,the mechanical property and thermal stability of the HTW were better than the TW based on their tensile tests and thermogravimetric analysis(TGA).Due to the large reduction of hydroxyl in epoxy,the hydrophobicity of the HTW was greatly improved compared with the TW,and their contact angles were 113°and 77°,*** results of scanning electron microscopy(SEM)showed that epoxy was filled in the voids of *** addition,the coating of the FAS did not obviously reduce the transmittance,and the transmittance of the TW and HTW was 69%and 67%at 750 *** in all,the HTW has potential for application in transparent decoration.

关键词： Epoxy Hydrophobicity Perfluorodecyltriethoxysilane Transmittance Transparent wood

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Characterization of natural fiber from manau rattan(Calamus manan)as a potential reinforcement for polymer-based composites

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Journal of Bioresources and Bioproducts 2022年第3期7卷 190-200页

作者： Linhu Ding xiaoshuai han Lihua Cao Yiming Chen Zhe Ling Jingquan han Shuijian He Shaohua Jiang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China

Researches on novel natural fibers in polymer-based composites will help promote the invention of novel reinforcement and expand their possible ***,in this study,novel cellulosic fibers were extracted from the stem of manau rattan(Calamus manan)by mechanical *** chemical,thermal,mechanical and morphological properties of manau rattan fibers were comprehensively analyzed and studied by Fourier transform infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD)analysis,thermogravimetric analysis(TGA),single fiber tensile test and scanning electron microscopy(SEM).Component analysis re-sults showed that the cellulose,hemicellulose and lignin contents of *** fibers were 42wt%,20wt%,and 27wt%,*** surface of the rattan fiber was hydrophilic according to the oxygen/carbon ratio of *** *** has a crystalline index of 48.28%,inducing a max-imum degradation temperature of 332.8°*** reveals that it can be used as a reinforcement for thermoplastic composites whose operating temperature is below 300°*** average ten-sile strength can reach(273.28±52.88)MPa,which is beneficial to improve the mechanical properties of rattan fiber reinforced *** SEM images displayed the rough surface of the fiber,which helped to enhance the interfacial adhesion between the fibers and matrices in *** results indicate the great potential of *** fibers as the reinforcement in polymer-based composites.

关键词： Cellulose Manau rattan(Calamus manan) Mechanical properties Natural fiber Thermal analysis

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Water molecule-induced hydrogen bonding between cellulose nanofibers toward highly strong and tough materials from wood aerogel

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Chinese Chemical Letters 2021年第10期32卷 3105-3108页

作者： xiaoshuai han Zhenxing Wang Linhu Ding Lian Chen Feng Wang Junwen Pu Shaohua Jiang Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy Beijing Forestry UniversityBeijing 100083China

Lightweight,highly strong and bio-based structural materials remain a long-lasting ***,inspired by nacre,a lightweight and high mechanical performance cellulosic material was fabricated via a facile and effective top-down approach and the resulting material has a high tensile strength of149.21 MPa and toughness of 1.91 MJ/m^(3).More specifically,the natural balsawood(NW) was subjected to a simple chemical treatment,removing most lignin and partial hemicellulose,follow by freeze-drying,forming wood aerogel(WA).The delignification process produced many pores and exposed numerous aligned cellulose ***,the WA absorbed a quantity of moisture and was directly densified to form above high-performance cellulosic *** treatment imitates highly ordered"brick-and-mortar" arrangement of nacre,in which water molecules plays the role of mortar and cellulose nanofibrils make the brick *** lightweight and good mechanical properties make this material promising for new energy car,aerospace,*** paper also explains the strengthening mechanism for making biomimetic materials by water molecules-induced hydrogen bonding and will open a new path for designing high-performance bio-based structural materials.

关键词： Wood aerogel Cellulose nanofibers Water molecules Hydrogen bonding Strength and toughness

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带像差校正功能的柔性变焦透镜

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光学学报 2022年第4期42卷 157-162页

作者：杨叶城张昕韩小帅梁丹马剑强宁波大学机械工程与力学学院浙江宁波315211

为了校正柔性变焦透镜变焦过程中出现的光学像差,提出了一种带校正像差功能的柔性变焦透镜。所提透镜由变焦模块和基于压电致动器的像差校正模块组成。制备了变焦透镜的原理样机并搭建实验光学系统对其进行了测试。测试结果表明,所提透... 详细信息

为了校正柔性变焦透镜变焦过程中出现的光学像差,提出了一种带校正像差功能的柔性变焦透镜。所提透镜由变焦模块和基于压电致动器的像差校正模块组成。制备了变焦透镜的原理样机并搭建实验光学系统对其进行了测试。测试结果表明,所提透镜可实现-1~5 D的屈光力变化;像差校正模块可精确重构3~9项Zernike多项式像差,归一化残余误差小于4%;对不同屈光力下的系统像差进行校正,校正后系统的波前像差下降幅值均在76%以上,系统成像质量明显提升。

关键词：光学设计自适应光学变焦透镜弹性薄膜像差校正

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单压电执行器阵列驱动的变形镜的制备与表征

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光子学报 2022年第1期51卷 338-345页

作者：钟贵明韩小帅张昕娄军强马剑强宁波大学机械工程与力学学院浙江宁波315211

为降低压电执行器阵列式变形镜的成本,提出了一种由单压电执行器阵列驱动的低成本变形镜。制备了19单元50 mm口径的变形镜样机,建立了基于Shack-Hartmann传感器的自适应光学测试系统,并对单个执行器性能、校正性能、镜面校平性能、变形... 详细信息

为降低压电执行器阵列式变形镜的成本,提出了一种由单压电执行器阵列驱动的低成本变形镜。制备了19单元50 mm口径的变形镜样机,建立了基于Shack-Hartmann传感器的自适应光学测试系统,并对单个执行器性能、校正性能、镜面校平性能、变形镜频率响应特性进行了表征。测试结果显示,制备的变形镜单个执行器在50 V电压下波前变形量可达10μm,可精确重构前14项Zernike多项式像差,校平后远场光斑接近艾里斑,变形镜一阶固有频率约为1.8 kHz。提出的单压电执行器阵列驱动的变形镜具有比较好的性能,在低成本自适应光学系统中具有应用前景。

关键词：变形镜单压电执行器自适应光学波前像差像差校正

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边缘驱动双腔可变形透镜的设计及制备

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压电与声光 2023年第2期45卷 190-194页

作者：张昕韩小帅鲍凯业俞历程马剑强宁波大学机械工程与力学学院浙江宁波315211

针对基于边缘驱动的可变形透镜无法进行球差像差的问题,该文提出了一种边缘驱动双腔可变形透镜结构。上腔体压电圆环32个致动器,校正除球差外的其余低阶像差,主要包括离焦、像散及慧差的校正。下腔体压电圆环1个致动器,通过与上腔致动... 详细信息

针对基于边缘驱动的可变形透镜无法进行球差像差的问题,该文提出了一种边缘驱动双腔可变形透镜结构。上腔体压电圆环32个致动器,校正除球差外的其余低阶像差,主要包括离焦、像散及慧差的校正。下腔体压电圆环1个致动器,通过与上腔致动器的相互作用,实现球差的校正。搭建了可变形透镜性能测试平台并进行了实验。实验结果表明,该可变形透镜能重构前4阶Zernike像差。

关键词：边缘驱动可变形透镜像差校正

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基于单压电变形镜的平顶光束整形研究

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宁波大学学报（理工版） 2021年第6期34卷 74-78页

作者：徐卢浩韩小帅张昕姚琪马剑强宁波大学机械工程与力学学院浙江宁波315211

针对光束整形问题,本文提出了一个基于单压电变形镜的方法和相关的搜索算法,用于整形出不同形状和不同尺寸的平顶光束.利用随机并行梯度下降算法找到平顶光束整形所需的调制相位,控制变形镜重构光斑对应的调制相位,实现对不同形状、不... 详细信息

针对光束整形问题,本文提出了一个基于单压电变形镜的方法和相关的搜索算法,用于整形出不同形状和不同尺寸的平顶光束.利用随机并行梯度下降算法找到平顶光束整形所需的调制相位,控制变形镜重构光斑对应的调制相位,实现对不同形状、不同尺寸平顶光束的整形.结果表明:所生成的圆形、方形平顶光束质量较高,且对不同尺寸(0.25、0.30、0.35、0.40 mm)的圆形、方形平顶光束均有较好的整形效果.

关键词：自适应光学平顶光束单压电片变形镜光束整形

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A method of magnetosonic characteristics to correct the "rarefaction shocks" problem arising in ZEUS

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Science China(Physics,Mechanics & Astronomy) 2012年第9期55卷 1720-1726页

作者： ZHU xiaoshuai WANG HuaNing FAN YuLiang DU ZhanLe HE han Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

ZEUS is a magnetohydrodynamics simulation code widely used in astrophysical ***,it was recently found that the code may produce artificial shocks in the rarefaction region in some numerical tests since it is not upwinded in fast and slow *** propose a method of magnetosonic characteristics to evolve compressional *** tests indicate that this method cures the "rarefaction shocks" problem to a large extent and it also greatly reduces some post shock oscillations.

关键词： magnetohydrodynamics numerical magnetosonic wave

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汉钢1号高炉超低硅高炉稳顺生产实践

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山西冶金 2024年第4期47卷 165-166,169页

作者：张小帅张宝婷陕钢集团汉中钢铁有限责任公司陕西勉县724200

2023年在钢铁市场形势持续低迷形势下,系统降本压力巨大,为了进一步降低铁前成本,汉钢1号高炉实施超低硅冶炼生产实践,以高炉操作管理为核心,通过加强原燃料管理、提高炉渣碱度、制定合理操作方针、稳定炉况、加强设备维护保障等措施实... 详细信息

2023年在钢铁市场形势持续低迷形势下,系统降本压力巨大,为了进一步降低铁前成本,汉钢1号高炉实施超低硅冶炼生产实践,以高炉操作管理为核心,通过加强原燃料管理、提高炉渣碱度、制定合理操作方针、稳定炉况、加强设备维护保障等措施实现低硅不低热,降硅不降质铁水含硅量是评价高炉铁水质量和生产技术水平的重要指标,2023年7—11月份实现生铁平均w[Si]=0.27%,w[S]=0.035%,同时实现高炉持续稳定顺行,取得了良好的经济效益,为公司降本增效作出突出的贡献。

关键词：低硅冶炼有害元素控制高炉操作

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