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Self-assembled activated carbon sandwiched graphene film for symmetrical supercapacitors

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Journal of Central South University 2020年第12期27卷 3603-3614页

作者： WU Yuan-yuan ZHU Lian-wen CHEN Ru-ting GU Li cao xue-bo LU Shao-rong College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004China School of Materials and Textile Engineering Jiaxing UniversityJiaxing 314001China College of Biological Chemical Sciences and EngineeringJiaxing UniversityJiaxing 314001China Department of Materials Imperial College LondonLondonSW72AZUnited Kingdom

Activated carbon(AC)particles sandwiched reduced graphene oxide sheets(rGO)film has been successfully fabricated via a facile self-assemble *** as-formed AC/rGO film is self-standing,flexible and mechanically robust,allowing to be transferred to any substrate on demand without *** AC particles effectively suppressed the restacking of the rGO sheet,AC/rGO film exhibits loose layer-by-layer stacking structures with various gaps between AC particles and rGO sheets,which is different from compact structures of pure graphene *** as-formed gaps provide fast diffusion channels for electrolyte ions and enhanced accessible surface area of ***,the AC/rGO electrode delivers improved electrochemical performance over the voltage range of 0.0−3.0 *** work offers a promising strategy to design free-standing supercapacitor electrodes based on traditional nanocarbon materials.

关键词： graphene film activated carbon self-assembly supercapacitor

The Mechanism of Heating Rate on the Secondary Recrystallization Evolution in Grain Oriented Silicon Steel

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 275-282页

作者： GAO Qian LI Jun WANG Xianhui cao Laifu GONG Jian LI bo Central Iron and Steel Research Institute Group Beijing 100081China Shougang Zhixin Electromagnetic Material R&D(Beijing)Co. Ltd.Beijing 101300China Beijing Shougang Co. Ltd.Qian’an 064404China

Grain-oriented silicon steels were prepared at different heating rates during high temperature annealing,in which the evolution of magnetic properties,grain orientations and precipitates were *** illustrate the Zener factor,the diameter and number density of precipitates of interrupted testing samples were statistically *** effect of precipitate ripening on the Goss texture and magnetic property was *** indicated that the trend of Zener factor was similar under different heating rates,first increasing and then decreasing,and that the precipitate maturing was greatly inhibited as the heating rate *** recrystallization was developed at the temperature of 1010℃when a heating rate of 5℃/h was used,resulting in Goss,Brass and{110}oriented grains growing abnormally and a magnetic induction intensity of ***,increasing the heating rate to 20℃/h would inhibit the development of undesirable oriented grains and obtain a sharp Goss ***,when the heating rate was extremely fast,such as 40℃/h,poor secondary recrystallization was developed with many island grains,corresponding to a decrease in magnetic induction intensity to 1.87 *** a suitable heating rate of 20℃/h,the sharpest Goss texture and the highest magnetic induction of 1.94 T with an onset secondary recrystallization temperature of 1020℃were found among the experimental variables in this *** heating rate affected the initial temperature of secondary recrystallization by controlling the maturation of precipitates,leading to the deviation and dispersion of Goss texture,thereby reducing the magnetic properties.

关键词： high temperature annealing heating rate secondary recrystallization grain oriented silicon steel

以实验教学改革促进大学生创新能力的培养——以无机化学实验为例

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嘉兴学院学报 2010年第2期22卷 70-73页

作者：曹雪波苏州大学化学化工学院江苏苏州215123

在剖析传统化学实验教学弊病的基础上,提出无机化学实验教学改革的方案,并通过更新教学理念,增设开放实验和化学技能赛,完善考核制度,加强基础训练,突出个性发展,培养学生创新意识和创新能力,因材施教,促进具有创新精神的高素质化学人... 详细信息

在剖析传统化学实验教学弊病的基础上,提出无机化学实验教学改革的方案,并通过更新教学理念,增设开放实验和化学技能赛,完善考核制度,加强基础训练,突出个性发展,培养学生创新意识和创新能力,因材施教,促进具有创新精神的高素质化学人才脱颖而出。

关键词：无机化学实验教学改革创新

基于有限元计算的Ⅰ型凹痕管道峰值周期应力分析

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压力容器 2010年第12期27卷 40-44页

作者：曹学博张鹏伍颖西南石油大学四川成都610500

凹痕缺陷是影响管道疲劳寿命的重要因素之一,它会大大降低在役管道的疲劳寿命。而凹痕管道上的峰值周期应力则是计算管道疲劳寿命的关键参数。针对管道上的Ⅰ型典型凹痕缺陷建立不同情况下的有限元模型;对大量计算结果进行整理、归纳、... 详细信息

凹痕缺陷是影响管道疲劳寿命的重要因素之一,它会大大降低在役管道的疲劳寿命。而凹痕管道上的峰值周期应力则是计算管道疲劳寿命的关键参数。针对管道上的Ⅰ型典型凹痕缺陷建立不同情况下的有限元模型;对大量计算结果进行整理、归纳、作图,在此基础上,对结果进行单因素和多因素分析;采用非线性回归分析方法,利用Matlab对大量计算结果进行拟合,得到一定适用范围下凹痕管道峰值周期应力与凹痕深度、管径、壁厚以及凹痕纵向长度之间的具体关系表达式。

关键词：管道凹痕峰值周期应力分析

Effects of Ti-and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

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Tungsten 2025年第1期7卷 32-49页

作者： Li-Rong Xiao Chen Chen Shuo Wang Zi-Yin Dai Hideo Kimura Cui Ni Chuan-Xin Hou xue-Qin Sun Si-Jie Guo Wei Du Xiu-bo Xie School of Environmental and Material Engineering Yantai University bosch HUAYU Steering Systems (Yantai) Co. Ltd.Ytp/MFE University of Tennessee Knoxville Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta Shandong University of Aeronautics

MgH2is considered as a promising hydrogen storage material for its high hydrogen storage capacity,low cost and abundant resource ***,the low kinetics and high enthalpy formation of MgH2limit its wide *** the perspective of adding catalysts to enhance the hydrogen storage properties of Mg-MgH2,this article elaborated the main catalysts based on Ti and Nb transition elements,including single oxide catalysts,binary oxides catalysts（combined with Ni,Na,Sr,V,etc.）,multiple catalysts bound to carbon,and composite catalysts with Ti and Nb elements combined with MXene ***,the main pathways of various catalysts to reduce the reaction activity and broaden the hydrogen desorption channel were also *** Ti-based catalysts can enhance the reactive sites of the matrix by forming multivalent states,while Nb-based catalysts broaden the hydrogen reaction channels by forming tiny *** improving the size structure and enhancing the grain size stability,combined with carbon materials should be the future considerations.

关键词： Catalysts Mg-based hydrogen storage alloys Solid hydrogen storage Transition metal elements

无掺杂石墨碳封装Fe_(3)C纳米颗粒的制备及其氧还原性能

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Journal of Central South University 2023年第1期30卷 35-48页

作者：于鑫浩武军于巾媛王德强何佳艺胡静谷俐曹雪波 School of Materials Science and Engineering Changzhou UniversityChangzhou 213164China College of Advanced Materials Engineering Jiaxing Nanhu UniversityJiaxing 314001China School of Materials and Textile Engineering Jiaxing UniversityJiaxing 314001China School of Biological and Chemical Engineering Jiaxing UniversityJiaxing 314001China

近年来,含氮金属碳化物氧还原反应(ORR)催化剂被广泛报道,但受到Fe_(x)N、N_(x)C和Fe纳米颗粒等多种反应活性位点的干扰,Fe_(3)C在催化过程中的具体作用尚不清楚。本文以Fe_(2)O_(3)纳米微球和细菌纤维素(BC)为原料,经热解得到了一种Fe_... 详细信息

近年来,含氮金属碳化物氧还原反应(ORR)催化剂被广泛报道,但受到Fe_(x)N、N_(x)C和Fe纳米颗粒等多种反应活性位点的干扰,Fe_(3)C在催化过程中的具体作用尚不清楚。本文以Fe_(2)O_(3)纳米微球和细菌纤维素(BC)为原料,经热解得到了一种Fe_(3)C/C核壳催化剂。虽然被封装的无氮Fe_(3)C颗粒不接触电解液,但BC碳化后形成石墨层的ORR催化活性得到大幅提升。石墨层保护了内部碳化物,使其在酸性和碱性电解液中均表现出良好的催化活性和稳定性。该催化剂可作为理解此类无杂元素封装型催化剂ORR活性位点的模型系统。本文提出的碳化物催化剂及其作用机理为ORR催化剂的开发提供了新的思路。

关键词：碳化铁非贵金属电极催化剂纳米结构细菌纤维素氧还原反应

大鼠成骨细胞在聚乳酸、马来酸酐改性聚乳酸表面的粘附性能研究

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生物化学与生物物理进展 2001年第5期28卷 688-690页

作者：潘君王远亮曹雪波苏兰秦建卢晓蔡绍皙重庆大学生物工程学院生物力学与组织工程教育部重点实验室重庆400044

采用微管吸吮装置对大鼠成骨细胞 ,在聚乳酸和马来酸酐改性聚乳酸材料表面的粘附性能进行了研究 .目的是评价材料的粘附性能和改性方法 ,并筛选材料 .研究表明 :与玻璃材料相比 ,成骨细胞在聚乳酸表面的粘附力更大 ,经化学结构改性后 ,... 详细信息

采用微管吸吮装置对大鼠成骨细胞 ,在聚乳酸和马来酸酐改性聚乳酸材料表面的粘附性能进行了研究 .目的是评价材料的粘附性能和改性方法 ,并筛选材料 .研究表明 :与玻璃材料相比 ,成骨细胞在聚乳酸表面的粘附力更大 ,经化学结构改性后 ,聚乳酸对成骨细胞 2 4h的粘附性能提高了近 2倍 .成骨细胞在改性聚乳酸材料表面的 2 4h组的粘附力是 15min组的 1 3倍 (测量时间为 3h) ,而在聚乳酸上则差别不明显 .实验证实 ,改性聚乳酸是一种更利于成骨细胞粘附的支撑材料。

关键词：聚乳酸改性成骨细胞粘附性能组织工程支撑材料马来酸酐

Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

活性炭吸附器+蓄热式热氧化器集成设备的开发研究

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化工机械 2016年第1期43卷 55-58页

作者：陈华栋张翠亚曹冠宇曹学博路涛天华化工机械及自动化研究设计院有限公司天津大学化工学院长城钻探工程有限公司中国石油长庆油田分公司

设计了处理VOCs用的活性炭吸附器+蓄热式热氧化器集成设备,并对其社会效益和经济效益进行了分析。

关键词：活性炭吸附浓缩蓄热式热氧化器 VOCs