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第二届中国（国际）能源材料化学研讨会

作者： Bo Yu Jiarui He Yuanfu Chen Weiqiang Lv Kechun Wen Chen Xu Wanli Zhang Yanrong Li Wu Qin Weidong He State Key Laboratory of Electronic Thin Films and Integrated Devices School of Energy Science and Engineering University of Electronic Science and Technology of China National Engineering Laboratory for Biomass Power Generation Equipment School of Renewable Energy Engineering North China Electric Power University College of Chemistry and Molecular Engineering Peking University

Owing to the high theoretical specific capacity(1166 mA h g),lithiated lithium sulfide（LiS）has been considered as a promising cathode material of Li-S ***,the polysulfide dissolution and low electronic conductivity ... 详细信息

关键词： Li2S@C-Co-N Nanoporous Famework A High Performance Lithium-Sulfur Batteries

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Lithium-ion Battery State of Charge/State of Health Estimation Using SMO for EVs

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Energy Procedia 2017年 105卷 4383-4388页

作者： Cheng Lin Jilei Xing Aihua Tang National Engineering Laboratory for Electric Vehicles and Collaborative Innovation Center of Electric Vehicles in Beijing School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China Sichuan Provincial Key Lab of Process Equipment and Control School of Mechanical Engineering Sichuan University of Science & Engineering Zigong 643000 China

Advanced battery management systems (BMS) in electric vehicles (EVs) require immediate and accurate battery state, such as State-of-Charge (SoC) and State-of-Health (SoH) for efficient monitoring and control. To improve the state estimation performance of battery, an electrochemical model is applied in this paper. First, the electrochemical model is reduced to describe the instantaneous Li-ion concentration dynamics of each electrode sufficiently without main information loss. Second, two separate sliding mode observers (SMOs) combined with reduced order electrochemical model are designed to identify SoC/SoH of lithium-ion cell from external measured voltage and current value. An estimation scheme which is comprised of two subestimators is designed. They work jointly: one separate sliding mode observer (SMO) for SoC estimation using Li-ion solid-electrolyte concentration and the other observer for cell contact resistance adopting Lyapunov's stability theory. Finally, in order to demonstrate the performance of proposed scheme, the simulations are verified by experiments from a 2.3Ah high-power LiFePO 4 /graphite cell used in EVs. The results indicate that the proposed estimation scheme with the SMO algorithm performs well with initial error values. The maximum SoC and SoH estimation error are less than 3% and 2.5% under Urban Dynamometer Driving Schedule (UDDS) drive cycles.

关键词： electric vehicles (EVs) State-of-Charge (SoC) State-of-Health (SoH) sliding mode observers (SMO) electrochemical model

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The optimal guidance of rocket fixed-attitude and fixed-point orbit injection 28

The optimal guidance of rocket fixed-attitude and fixed-poin...

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28th Chinese control and Decision Conference, CCDC 2016

作者： Jian, Wang Cheng, Xiao-Ming Feng, Qiu National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing Aerospace Automation Control Institute Beijing100854 China Academy of Aerospace Bei-Hang University Beijing100191 China

ISBN: (纸本)9781467397148

An optimal guidance method for orbit injection is put forward in this paper. This method can provide an orbit attitude and at the same time satisfy the specified speed and position. In view of the controllable engine thrust direction, the optimal control proposition of the rocket fixed-attitude and fixed-point orbit injection is established. By introducing a new control variable, the proposition with equality constraints is transformed to unconstrained control variable problem, and the solvable Hamiltonian equation set is obtained through derivation. Hamilton equation is derived and simplified through algebraic method, and numerical algorithm is used to calculate the co-state variable conveniently, and then the optimal control curve is obtained. Simulation shows that by adjusting the direction of the thrust, the guidance method proposed by this paper can make the rocket injected into the target orbit at a specified point with constrained speed and attitude. © 2016 IEEE.

关键词： Fixed Attitude Fixed Point Optimal Guidance

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The optimal guidance method for fixed-time and fixed-point orbit injecting 28

The optimal guidance method for fixed-time and fixed-point o...

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28th Chinese control and Decision Conference, CCDC 2016

作者： Jian, Wang Feng, Qiu Cheng, Xiao-Ming National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing Aerospace Automation Control Institute Beijing100854 China Academy of Aerospace Bei-Hang University Beijing100191 China

ISBN: (纸本)9781467397148

This paper proposes an optimal guidance method which can give a certain orbit injection time, and satisfy the six terminal constraints of velocity and position at the same time. An optimal control problem of fixed-time and fixed-point orbit injection is established for the launch vehicle whose size of engine thrust and direction are controllable. The problem is proved to be solvable by introducing a new control variable, transforming the problem with equality constraints into control variable unconstrained problem, and deriving formulas. Numerical algorithm can be used to calculate seven co-state variables, then the size and direction of thrust is obtained. The simulations reveal that the guidance method this paper presented can put the rocket into the target orbit from the specified orbit injection point at the specified time. © 2016 IEEE.

关键词： Fixed Point Fixed Time Optimal Guidance

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Narrow photonic-plasmonic resonances in petal-like capped-nanopillar resonators for real-time, ultrasensitive colorimetric sensing 20

Narrow photonic-plasmonic resonances in petal-like capped-na...

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20th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2016

作者： Fan, Jiaorong Wu, Wengang Zhu, Jia Yun, Huang National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of Microelectronics Peking University Beijing100871 China Innovation Center for MicroNanoelectronics and Integrated System Beijing China

ISBN: (纸本)9780979806490

A new type of colorimetric sensing device composed of metallic nanopetal-capped-nanopillar array metasurface is reported. The device exhibits narrowband and harmonic reflection feature, and thus has excellent ability to produce vivid and bright colors. This is due to the effect of surface-plasmon (SP) coupling in the array of three-dimensional plasmonic petal-capped-pillar nanoresonators. We employ the device as an ultrasensitive colorimetric plasmon-resonance sensor to detect different refractive-index solutions with much striking color differences. The metasurface-based sensor can visually detect the surrounding medium in real-time with refractive index resolution of 2x10-3 units.

关键词： Refractive index

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An Edge Detection Method Based on Information Fusion

An Edge Detection Method Based on Information Fusion

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2016 IEEE Chinese Guidance, Navigation and control Conference (IEEE CGNCC2016)

作者： WEN JU JIAOLONG LIU GAOHUA CAI HONGQUAN YUN Pattern Recognition on National Key Laboratory of Science and Technology on Aerospace Intelligence Control Guidance Navigation and Control on National Key Laboratory of Science and Technology on Aerospace Intelligence Control

ISBN: (纸本)9781467383196

Image fusion is one of the main field of multi-source information *** is one of basic features of image,and extracting edges could give a strong support to target *** the edge detection problems,this paper proposes an improved edge detection method based on information ***,through constructing a target function and calculating the differential coefficient of the target function,the mass evaluation of the least target function can be gotten,then the grads matrix of the image is evaluated,and the final edge information can be obtained according to a certain *** algorithm improves the anti-noise quality of edge *** experimental result proves the applicability of the method.

关键词： image Sobel Image An Edge Detection Method Based on Information Fusion

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The Influence of Carbon Nitride Nanosheets Doping on the Crystalline Formation of MIL-88B(Fe) and the Photocatalytic Activities

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Small (Weinheim an der Bergstrasse, Germany) 2018年第35期14卷 e1802045页

作者： Zhen-Dong Lei Yuan-Cheng Xue Wen-Qian Chen Lin Li Wen-Hui Qiu Yong Zhang Liang Tang School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 P. R. China. NUS Graduate School for Integrative Sciences & Engineering National University of Singapore Singapore 117583 Singapore. Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen 518055 Guangdong P. R. China. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen 518055 Guangdong P. R. China.

In this research, bulk graphitic carbon nitride (g-C N ) is exfoliated and transferred to the carbon nitride nanosheets (CNNSs), which are then coupled with MIL-88B(Fe) to form the hybrid. From the results of the powder X-ray diffraction, scanning electronic microscopy and thermogravimetric analysis, it is found that the doping of CNNSs on the surface of MIL-88(Fe) could maintain the basic structure of MIL-88B(Fe), and the smaller dimension of CNNSs might influence the crystallization process of metal-organic frameworks (MOFs) compared to bulk g-C N . Besides, the effects of the CNNSs incorporation on photocatalysis are also investigated. Through the photoluminescence spectra, electrochemical measurements, and photocatalytic experiments, the hybrid containing 6% CNNSs is certified to possess the highest catalytic activity to degrade methylene blue and reduce Cr(VI) under visible light. The improvement of the photocatalytic performance can be attributed to the matched energy level which favors the formation of the heterojunctions. Besides, it promotes the charge migration such that the contact between MOFs and CNNSs is more intimate, which can be inferred from the electronic microscopy images. Finally, a possible photocatalytic mechanism is put forward by the relative calculation and the employment of the scavengers to trap the active species.

关键词： carbon nitride crystallization process heterojunction metal-organic frameworks (MOFs) photocatalysis

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Large‐Scale Synthesis of MOF‐Derived Superporous Carbon Aerogels with Extraordinary Adsorption Capacity for Organic Solvents

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Angewandte Chemie 2019年第5期132卷

作者： Chaohai Wang Jeonghun Kim Jing Tang Jongbeom Na Yong‐Mook Kang Minjun Kim Hyunsoo Lim Yoshio Bando Jiansheng Li Yusuke Yamauchi Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse Key Laboratory of New Membrane Materials Ministry of Industry and Information Technology School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia Key Laboratory of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China Department of Chemistry Kookmin University 77 Jeongneung-ro Seongbuk-gu Seoul 02707 South Korea Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea Institute of Molecular Plus Tianjin University No. 92 Weijin Road Nankai District Tianjin 300072 P. R. China Australian Institute of Innovative Materials (AIIM) The University of Wollongong Squires Way North Wollongong NSW 2500 Australia International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan Department of Plant & Environmental New Resources Kyung Hee University 1732 Deogyeong-daero Giheung-gu Yongin-si Gyeonggi-do 446-701 South Korea

Carbon aerogels (CAs) with 3D interconnected networks hold promise for application in areas such as pollutant treatment, energy storage, and electrocatalysis. In spite of this, it remains challenging to synthesize high‐performance CAs on a large scale in a simple and sustainable manner. We report an eco‐friendly method for the scalable synthesis of ultralight and superporous CAs by using cheap and widely available agarose (AG) biomass as the carbon precursor. Zeolitic imidazolate framework‐8 (ZIF‐8) with high porosity is introduced into the AG aerogels to increase the specific surface area and enable heteroatom doping. After pyrolysis under inert atmosphere, the ZIF‐8/AG‐derived nitrogen‐doped CAs show a highly interconnected porous mazelike structure with a low density of 24 mg cm −3 , a high specific surface area of 516 m 2 g −1 , and a large pore volume of 0.58 cm −3 g −1 . The resulting CAs exhibit significant potential for application in the adsorption of organic pollutants.

关键词： Agarose Kohlenstoffaerogele Mesoporöse Materialien Metall-organische Gerüste Nanoarchitektur-Materialien

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Novel optoelectronic characteristics from manipulating general energy-bands by nanostructures

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Frontiers of Optoelectronics 2016年第2期9卷 151-159页

作者： Yidong HUANG Kaiyu CUI Fang LIU Xue FENG Wei ZHANG State Key Lab of Integrated Optoelectronics Tsinghua National Laboratory for Information Science and Technology Department of Electronic Engineering Tsinghua University Beijing 100084 China

This paper summarizes our research work on optoelectronic devices with nanostructures. It was indi- cated that by manipulating so called ＂general energybands＂ of fundamental particles or quasi-particles, such as photon, phonon, and surface plasmon polariton （SPP）, novel optoelectronic characteristics can be obtained, which results in a series of new functional devices. A silicon based optical switch with an extremely broadband of 24 nm and an ultra-compact （8 μm -17.6μm） footprint was demonstrated with a photonic crystal slow light waveguides. By proposing a nanobeam based hereto optomechanical crystal, a high phonon frequency of 5.66 GHz was realized experimentally. Also, we observed and verified a novel effect of two-surface-plasmon-absorption （TSPA）, and realized diffraction-limit-overcoming photolithography with resolution of-1/11 of the exposure wavelength.

关键词： keywords photonic crystal waveguide （PCWG） opto-mechanical crystal surface plasmon polariton （SPP） two-surface-plasmon-absorption （TSPA）

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Laser annealing of SiO2 film deposited by ICPECVD for fabrication of silicon based low loss waveguide

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Frontiers of Optoelectronics 2016年第2期9卷 323-329页

作者： Ya'nan WANG Yi LUO Changzheng SUN Bing XIONG Jian WANG Zhibiao HAO Yanjun HAN Lai WANG Hongtao LI Tsinghua National Laboratory for Information Science and Technology/State Key Lab of Integrated Optoelectronics Department of Electronic Engineering Tsinghua University Beijing 100084 China

Laser annealing of silicon dioxide （SiO2） film formed by inductively coupled plasma enhanced chemical vapor deposition （ICPECVD）is studied for the fabrication of low loss silicon based waveguide. The influence of laser annealing on ICPECVD-deposited SiO2 film is investigated. The surface roughness, refractive index, and etch rate of annealed samples are compared with those of SiO2 film obtained by thermal oxidation. It is demonstrated that the performance of ICPECVD-deposited SiO2 film can be significantly improved by laser annealing. Al2O3/SIO2 waveguide has been fabricated on silicon substrate with the SiO2 lower cladding formed by ICPECVD and laser annealing process, and its propagation loss is found to be comparable with that of the waveguide with thermally oxidized lower cladding.

关键词： laser annealing waveguide loss silicondioxide inductively coupled plasma enhanced chemicalvapor deposition （ICPECVD）

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