检索结果-南通市图书馆

Nano Research 2022年第9期15卷 8118-8127页

作者： Can Huang qiufan wang Daohong Zhang Guozhen Shen Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSchool of Chemistry and Materials ScienceSouth-Central Minzu UniversityWuhan 430074China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China

The development of a high specific capacity and stable manganese(Mn)-based cathode material is very attractive for aqueous zinc-ion(Zn^(2+))batteries(ZIBs).However,the inherent low electrical conductivity and volume expansion challenges limit its stability ***,a mesoporous ZnMn_(2)O_(4)(ZMO)nanocage(N-ZMO)coupled with nitrogen doping and oxygen vacancies is prepared by defect engineering and rational structural design as a high-performance cathode material for rechargeable *** oxygen vacancies enhance the electrical conductivity of the material and the nitrogen doping releases the strong electrostatic force of the material to maintain a higher structural ***,N-ZMO exhibits excellent ability of Zn^(2+)storage(225.4 mAh·g^(−1)at 0.3 A·g^(−1)),good rate,and stable cycling performance(88.4 mAh·g^(−1)after 1,000 cycles at 3 A·g^(−1)).Furthermore,a flexible quasi-solid-state device with high energy density(261.6 Wh·kg^(−1))is assembled,demonstrating long-lasting *** believe that the strategy in this study can provide a new approach for developing aqueous ZIBs.

关键词： nitrogen(N)-doping oxygen vacancies defect zinc-ion(Zn^(2+))storage flexible quasi-solid-state device

High-performance flexible self-powered strain sensor based on carbon nanotube/ZnSe/CoSe_(2) nanocomposite film electrodes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第1期15卷 170-178页

作者： qiufan wang Jiaheng Liu Xuan Ran Daohong Zhang Guozhen Shen Menghe Miao Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSchool of Chemistry and Materials ScienceSouth Central University for NationalitiesWuhan 430074China State Key Laboratory for Superlattices and Microstructures Institution of SemiconductorsChinese Academy of SciencesBeijing 100083China CSIRO Manufacturing 75 Pigdons RoadWaurn PondsVictoria 3216Australia

High-performance energy storage and sensing devices have been undergoing rapid development to meet the demand for portable and wearable electronic products,which require flexibility,extensibility,small volume and *** this study,we construct a lightweight and flexible self-powered sensing system by integrating a highly stretchable strain sensor with a high-performance asymmetric supercapacitor based on ZnSe/CoSe_(2)//ECNT(ECNT:electrochemically activated carbon nanotube film).The ZnSe/CoSe_(2) two-dimentional nanosheets on carbon nanotube(CNT)films are synthesized through a simple and efficient strategy derived from ZnCo-based metal-organic frameworks(MOFs).The density functional theory(DFT)simulations show the higher conductivity of the ZnSe/CoSe_(2)/CNT electrode than the CoSe_(2)/CNT *** to the synergistic properties of self-supported two-dimentional ZnSe/CoSe_(2) nanosheets with high specific surface area and the high pathway of one-dimention CNTs,the nanocomposite electrode provides efficient transmission and short paths for electron/ion *** asymmetric supercapacitor provides a stable output power supply to the sensors that can precisely respond to strain and pressure *** sensor can also be attached to a garment for measuring a variety of joint movements.

关键词： asymmetric supercapacitor sensors self-powered self-supported ZnSe/CoSe_(2)/carbon nanotube(CNT)nanosheets density functional theory

Ultralong-life and high-rate web-like Li4Ti5O12 anode for high-performance flexible lithium-ion batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2014年第7期7卷 1073-1082页

作者： Xianfu wang Bin Liu Xiaojuan Hou qiufan wang Wenwu Li Di Chen Guozhen Shen State Key Laboratory for Superlattices and Microstructures Institution of Semiconductors Chinese Academy of Science Beijing 100083 China Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information Huazhong University of Science and Technology (HUST) Wuhan 430074 China

Flexible lithium ion batteries （LIBs） have recently attracted increasing attention as they show unique promising advantages, such as flexibility, shape diversity, and light weight. Similar to conventional LIBs, flexible LIBs with long cycle life and high-rate performance are very important for applications of high performance flexible electronics. Herein, we report a three-dimensional （3D） web-like binderfree Li4Ti5O12 （LTO） anode assembled from numerous 1D nanowires exhibiting excellent cycling performance with high capacities of 153 and 115 mA·h·g^-1 after 5,000 cycles at 2 C and 20 C, respectively, and excellent rate property with a capacity of 103 mA·h·g^-1 even at a very high current rate of 80 C. Surprisingly, a flexible full battery assembled from the web-like LTO nanostructure and LiMn2O4 （LMO） nanorods exhibited a high capacity of 125 mA·h·g^-1 at high current rate of 20 C, and showed excellent flexibility with little performance degradation even in seriously bent states.

关键词： ultralong-life high-rate web-like Li4Ti5O12 anode flexible batteries

Advanced rechargeable lithium-ion batteries based on bendable ZnCo2O4-urchins-on-carbon-fibers electrodes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2013年第7期6卷 525-534页

作者： Bin Liu Xianfu wang Boyang Liu qiufan wang Dongsheng Tan Weifeng Song Xiaojuan Hou Di Chen Guozhen Shen State Key Laboratory of Supedattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Wuhan National Laboratory for Optoelectronics (WNLO) and College of Optical and Electronic Information Huazhong University ofScience and Technology (HUST) Wuhan 430074 China

A novel class of ZnCo2O4-urchins-on-carbon-fibers matrix has been designed, characterized, and used to fabricate high-performance energy storage devices. We obtained a reversible lithium storage capacity of 1180 mA＇h/g even after 100 cycles, demonstrating the highreversible capacity and excellent cycle life of the as-prepared samples. Tested as fast-charging batteries, these electrodes exhibited a considerable capacity of 750 mA＇h/g at an exceptionally high rate of 20 C （18 A/g）, with an excellent cycle life （as long as 100 cycles）, which are the best high-rate results reported at such a high charge^discharge current density for ZnCo2O4-based anode materials in lithium rechargeable batteries. Such attractive properties may be attributed to the unique structure of the binder-free ZnCo2O4-urchins-on-carbon-fibers matrix. Full batteries were also developed by combining the ZnCo2O4 anodes with commercial LiCoO2 cathodes, which showed flexible/wearable and stable features for use as very promising future energy storage units.

关键词： ZnCo2O4-urchins-on- carbon-fibers advanced lithium-ion batteries flexible/wearable features

Prenatal exposure to di-n-butyl phthalate disrupts the development of adult Leydig cells in male rats during puberty

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prenatal exposure to di-n-butyl phthalate disrupts the devel...

基于核壳花状电极的高性能可伸缩超级电容器与光电探测器的集成

中国生理学会生殖科学专业委员会—中国动物学会生殖生物学分会第二次联合学术年会暨“生殖科学专业委员会第二次学术交流会”和“生殖生物学分会第十六次学术年会”

作者： Huitao Li Xiaomin Chen Linxi Li Hongguo Guan Yaoyao Dong Xiaoheng Li qiufan wang Qingquan Lian Guoxin Hu Ren-Shan Ge Center of Scientific Research The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University School of Pharmaceutical Sciences Wenzhou Medical University

Fetal exposure to di-n-butyl phthalate(DBP)causes the adult disease such as lower testosterone production and ***,the mechanism is still *** objective of the present study is to determine how DBP affects the involution of fetal Leydig cells during the neonatal period and how this event causes the delayed development of the adult Leydig cells during ***

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

中南民族大学学报（自然科学版） 2022年第2期41卷 129-137页

作者：邵雯柯张道洪王秋凡中南民族大学化学与材料科学学院&催化转化与能源材料化学教育部重点实验室暨催化材料科学湖北省重点实验室&超支化聚合物合成与应用技湖北省工程研究中心武汉430074

将储能装置与太阳能电池集成一体化对发展具有稳定功率输出的可穿戴和柔性电子产品是一种挑战.分别以Co_(3)O_(4)@Ni-Co-S和FeSe_(2)为正极和负极,研制了一种高性能柔性非对称全固态纤维状超级电容器.制备的Co3O_(4)@Ni-Co-S电极由于具... 详细信息

将储能装置与太阳能电池集成一体化对发展具有稳定功率输出的可穿戴和柔性电子产品是一种挑战.分别以Co_(3)O_(4)@Ni-Co-S和FeSe_(2)为正极和负极,研制了一种高性能柔性非对称全固态纤维状超级电容器.制备的Co3O_(4)@Ni-Co-S电极由于具有3D核-壳微型菊花和微型雪花结构表现出优异的体积比电容(5.0 F·cm^(-3),0.4 mA)和良好的循环性能(5000次循环后性能保留83.6%).此外,利用硅太阳能电池直接光充电制作了非对称超级电容器(PSC).即使在任何弯曲角度及可伸缩状态下,所得的PSC均可为基于TiO_(2)阳极和PEDOT阴极的微型柔性光电探测器供电.核壳Co_(3)O_(4)@Ni-Co-S微型菊花电极还显示出优异的电催化析氢性能,展示了构建高性能柔性和可穿戴能源设备的巨大潜力.

关键词： 3D核壳花非对称超级电容器光充电可拉伸/可压缩

玉米-小麦-豆粕型饲粮中添加纤维素复合酶对蛋鸡生产性能、蛋品质、养分表观代谢率和肠道食糜黏度的影响

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

动物营养学报 2023年第11期35卷 7138-7148页

作者：王秋凡赵国先李茜冯志华刘观忠张东远杨博文赵前程常丹萍河北农业大学动物科技学院保定071000 河北省畜牧兽医研究所保定071030 中科康源(唐山)生物技术有限公司唐山064400

本试验旨在研究纤维素复合酶(主要成分为纤维素酶、木聚糖酶、淀粉酶和蛋白酶)在蛋鸡玉米-小麦-豆粕型饲粮中的应用效果。选取53周龄海兰褐蛋鸡288只,随机分为4个组,每个组6个重复,每个重复12只鸡。对照组饲喂玉米-小麦-豆粕型饲粮,试... 详细信息

本试验旨在研究纤维素复合酶(主要成分为纤维素酶、木聚糖酶、淀粉酶和蛋白酶)在蛋鸡玉米-小麦-豆粕型饲粮中的应用效果。选取53周龄海兰褐蛋鸡288只,随机分为4个组,每个组6个重复,每个重复12只鸡。对照组饲喂玉米-小麦-豆粕型饲粮,试验组分别在对照组饲粮的基础上添加200、400和600 mg/kg的纤维素复合酶。预试期为7 d,正试期为84 d。结果显示:1)与对照组相比,200、400、600 mg/kg组蛋鸡的产蛋率分别显著提高了2.72%、3.28%、5.39%(P0.05)。4)与对照组相比,400和600 mg/kg组蛋鸡十二指肠食糜黏度显著降低(P<0.05),各试验组蛋鸡回肠食糜黏度均显著降低(P<0.05),其中400 mg/kg组比对照组降低15.79%。5)200、400、600 mg/kg组的利润比对照组分别提高了11.01%、19.74%、16.64%,其中400 mg/kg组蛋鸡产生的经济效益最好。6)通过建立料蛋比(y)与纤维素复合酶添加量(x)之间的回归方程y=11.072×10^(-7)x^(2)-0.001x+2.331,计算出获得最小料蛋比时的纤维素复合酶添加量为451.59 mg/kg。结合生产性能和经济效益,在本试验条件下,蛋鸡玉米-小麦-豆粕型饲粮中纤维素复合酶的适宜添加量为400 mg/kg。

关键词：玉米-小麦-豆粕型饲粮蛋鸡纤维素复合酶

A Model Predictive Control Method for Hybrid Energy Storage Systems

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2021年第2期7卷 329-338页

作者： Siyuan Chen qiufan Yang Jianyu Zhou Xia Chen State Key Laboratory of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The traditional PI controller for a hybrid energy storage system(HESS)has certain drawbacks,such as difficult tuning of the controller parameters and the additional filters to allocate high-and low-frequency power *** paper proposes a model predictive control(MPC)method to control three-level bidirectional DC/DC converters for grid-connections to a HESS in a DC ***,the mathematical model of a HESS consisting of a battery and ultra capacitor(UC)is established and the neutral point voltage imbalance of a three-level converter is solved by analyzing the operating modes of the ***,for the control of the grid-connected converters,an MPC method is proposed for calculating steady-state reference values in the outer layer and the dynamic rolling optimization in the inner *** outer layer ensures the voltage regulation and establishes the current predictive model,while the inner layer,using the model predictive current control,makes the current follow the predictive value,thus reducing the system current *** cascaded topology has two independent controllers and is free of filters to realize the high-and low-frequency power allocation for a ***,it allows two types of energy storage devices to independently regulate the voltage and realizes the power allocation of the battery and ***,simulation studies are conducted in PSCAD/EMTDC,and the effectiveness of the proposed HESS control strategy is verified in a case,such as a controller comparison and fault scenario.

关键词： Double layer control method hybrid energy storage system(HESS) model predictive control(MPC) three-level DC/DC converter

蛋鸡玉米-豆粕-棉籽粕型饲粮低蛋白质水平及氨基酸平衡模式的研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

动物营养学报 2023年第5期35卷 3001-3013页

作者：赵前程赵国先马可为郝艳霜刘观忠李茜杨博文刘闰常丹萍王秋凡于世征河北农业大学动物科技学院保定071001 保定职业技术学院保定071000 河北省畜牧兽医研究所保定071000

本试验通过研究玉米-豆粕-棉籽粕型饲粮蛋白质水平及氨基酸平衡数量对蛋鸡生产性能、蛋品质、养分表观代谢率以及氮排放的影响,探究蛋鸡玉米-豆粕-棉籽粕型低蛋白质饲粮的可行性,并确定适宜的蛋白质水平以及合理的氨基酸平衡模式。选取... 详细信息

本试验通过研究玉米-豆粕-棉籽粕型饲粮蛋白质水平及氨基酸平衡数量对蛋鸡生产性能、蛋品质、养分表观代谢率以及氮排放的影响,探究蛋鸡玉米-豆粕-棉籽粕型低蛋白质饲粮的可行性,并确定适宜的蛋白质水平以及合理的氨基酸平衡模式。选取504只400日龄海兰褐蛋鸡,随机分为7组,每组6个重复,每个重复12只鸡。各组饲粮类型均为玉米-豆粕-棉籽粕型,其中1组(对照组)饲粮蛋白质水平为15.5%,2、3、4组饲粮蛋白质水平在对照组饲粮蛋白质水平的基础上降低1.5%并分别平衡蛋氨酸(Met)+赖氨酸(Lys)、Met+Lys+苏氨酸(Thr)和Met+Lys+Thr+色氨酸(Trp),5、6、7组饲粮蛋白质水平在对照组饲粮蛋白质水平的基础上降低3%并分别平衡Met+Lys、Met+Lys+Thr和Met+Lys+Thr+Trp。试验期为91 d,其中预试期7 d,正试期84 d。结果显示:1)饲粮蛋白质水平显著影响产蛋率和料蛋比(P0.05);5、6、7组的产蛋率显著降低(P0.05)。饲粮蛋白质水平与氨基酸平衡数量对蛋品质各项指标无显著的交互作用(P>0.05)。3)饲粮蛋白质水平显著影响粗蛋白质表观代谢率(P0.05)。饲粮蛋白质水平与氨基酸平衡数量对粗蛋白质表观代谢率有显著的交互作用(P<0.05)。与对照组相比,2、3、4组的粗蛋白质表观代谢率均显著提高(P<0.05)。4)饲粮蛋白质水平和氨基酸平衡数量均显著影响粪中吲哚、粪臭素以及氨气含量(P<0.05)。饲粮蛋白质水平与氨基酸平衡数量对粪中吲哚、粪臭素以及氨气含量有显著的交互作用(P<0.05)。与对照组相比,3、4、5、6、7组粪中吲哚含量均显著降低(P<0.05),2、3、4、5、6、7组粪中粪臭素和氨气含量均显著降低(P<0.05)。5)2、3、4组的利润均高于对照组,且以2组的经济效益最好。综上可知,在本试验条件下,蛋鸡生产中应用玉米-豆粕-棉籽粕型低蛋白质饲粮具有可行性。玉米-豆粕-棉籽粕型饲粮蛋白质水平由15.5%降至14.0%并平衡Met+Lys对蛋鸡的生产性能和蛋品质无负面影响,同时可提高粗蛋白质表观代谢率,减少氮排放,具有最好的经济效益,此时饲粮氨基酸平衡模式为Lys∶Met∶Thr∶Trp=100∶45∶54∶15;玉米-豆粕-棉籽粕型饲粮蛋白质水平由15.5%降至12.5%时,即使平衡Met+Lys+Thr+Trp,依旧会对蛋鸡的生产性能产生负面影响。

关键词：蛋鸡低蛋白质豆粕棉籽粕氨基酸平衡模式

Fractional-order Virtual Inertia Control and Parameter Tuning for Energy-storage System in Low-inertia Power Grid

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Protection and Control of Modern Power Systems 2024年第5期9卷 70-83页

作者： Yukai Zeng qiufan Yang Yujun Lin Yin Chen Xia Chen Jinyu Wen State Key Laboratory of Advanced Electromagnetic Engineering Huazhong University of Science and TechnologyWuhan 430074China Department of Electronic and Electrical Engineering University of StrathclydeGlasgow G11XWU.K.

As conventional synchronous generators are replaced by large-scale converter-interfaced renewa-ble-energy sources(RESs),the electric power grid en-counters the challenge of low rotational ***-quently,system frequency deviation is exacerbated and system instability may occur when the frequency deviates beyond the acceptable *** mitigate this effect,this study proposes a virtual inertia control(VIC)strategy based on a fractional-order derivative and controller parameter-tuning *** tuning method uses the stability boundary locus and provides a stability criterion for identifying the stability region in the parameter *** controller parameters are then optimized within the identified stability region to suppress frequency deviation and enhance system *** proposed controller and tuning method is applied to a battery energy-storage system(BESS)in a low-inertia power system with the integration of ***-domain simulations are carried out to verify the stability region and compare the per-formance of the optimized proposed controller to that of the traditional integral-order *** simulation results show that the stability-analysis method is effective and that the fractional-order VIC,tuned with the pro-posed method,outperforms the traditional method in both frequency-regulation performance and parametric robustness.

关键词： Virtual inertia control frequency regulation fractional-order controller stability region parameter tuning