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中国电力 2022年第2期55卷 44-50,208页

作者：陈娟惠东范茂松胡娟褚永金中国电力科学研究院有限公司北京100085

锂离子电池的储能电站在运行过程中上传的数据量庞大,数据采样率高,增大了实时在线评估工作的难度。如何提取并压缩有效数据,同时保证压缩后的数据具有保真性,成为数据挖掘预处理所面对的主要问题。针对上述问题,选取储能电站特定工况... 详细信息

锂离子电池的储能电站在运行过程中上传的数据量庞大,数据采样率高,增大了实时在线评估工作的难度。如何提取并压缩有效数据,同时保证压缩后的数据具有保真性,成为数据挖掘预处理所面对的主要问题。针对上述问题,选取储能电站特定工况下一个电池簇的数据,利用粗糙集方法,对数据的属性进行约简,根据正态分布的2σ原则对属性值进行二元逻辑划分,将单体电池划分为频繁检测对象和普通检测对象,压缩了在线处理的数据量。最后,对同一电池簇20天内不同工况数据进行验证,证明了该处理方法的有效性。

关键词：储能电站数据处理粗糙集属性约简统计学

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铝基材料水解制氢技术

化学进展 2016年第12期28卷 1870-1879页

作者：赵冲徐芬孙立贤范明慧邹勇进褚海亮广西新能源材料结构与性能协同创新中心广西信息材料重点实验室桂林电子科技大学材料科学与工程学院桂林541004

氢能作为一种高焓值的绿色能源在解决未来能源危机和环境污染中备受关注,而铝水反应在众多制氢途径中被认为是最具优势的方法之一。本文着重论述了近几年铝基材料水解制氢技术的研究进展。铝水制氢是一种很有发展前景的储存和运输氢能... 详细信息

氢能作为一种高焓值的绿色能源在解决未来能源危机和环境污染中备受关注,而铝水反应在众多制氢途径中被认为是最具优势的方法之一。本文着重论述了近几年铝基材料水解制氢技术的研究进展。铝水制氢是一种很有发展前景的储存和运输氢能的方式,但Al表面致密的氧化层阻碍了铝水反应的进行,使其难以在常温常压情况下产生氢气。为充分开发利用氢能源,可采用添加碱、氢化物、金属氧化物、无机盐等方式,或将金属单质与Al通过烧结、熔炼、球磨等先进的技术手段进行复合,能够有效地活化Al,从而实现低环境温度、短诱导时间、快产氢速率、高转化率的铝水反应,为燃料电池电动汽车现场供氢。

关键词：氢能铝水制氢球磨熔炼铝的活化

SEQUENCE RECONSTRUCTION UNDER SOME ORDER-TYPE CONSTRAINTS

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Science in China,Ser.A 1983年第7期 702-713页

作者：朱永津朱若鹏 Institute of Systems Science Academia Sinica Beijing Department of Mathematics Peking University

This paper deals with a mathematical model proposed in a train marshalling problem. Given π:a1a2…am,where each ai is an integer and , we let {π1, π2,…,πs,} be a partition of π and π’oπ2o…oπ, be a juxtaposition of subsequenees π1, π2,…,πs,. In this paper, we define of a set Yπ= {S}, S being a quasi-ordered sequence of the m terms a1, a2, …am, introducethe concept of semi-binary tree and then give an algorithm to find the optimal partition of π relative to Yπ such that s is as small as possible. The computing time of this algorithm is O（n2）.

关键词： SMD root

TiO_2/CNTs复合材料涂覆隔膜的制备及在锂硫电池中的应用

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高等学校化学学报 2019年第3期40卷 536-541页

作者：官亦标李万隆谢潇怡曲薇沈进冉傅凯郭翠静周淑琴范红家褚永金陈人杰新能源与储能运行控制国家重点实验室北京100192 中国电力科学研究院有限公司北京100192 环境科学与工程北京市重点实验室北京理工大学材料科学与工程学院北京100081 北京电动车辆协同创新中心北京100081

以金属有机框架材料MIL-125(Ti)为模板制备了多孔TiO_2,同时引入碳纳米管,得到碳纳米管交联包覆多孔TiO_2的三维导电复合材料.将该复合材料涂覆在隔膜表面并应用于锂硫电池.利用透射电子显微镜(TEM)、扫描电子显微镜(SEM)和X射线光电子... 详细信息

以金属有机框架材料MIL-125(Ti)为模板制备了多孔TiO_2,同时引入碳纳米管,得到碳纳米管交联包覆多孔TiO_2的三维导电复合材料.将该复合材料涂覆在隔膜表面并应用于锂硫电池.利用透射电子显微镜(TEM)、扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)等对材料的结构和组成进行了表征.电化学测试结果表明,在0. 5C(1C=1675 m A/g)倍率下,CNTs/S复合正极材料表现出高达1051. 1 m A·h/g的放电容量,循环150周后仍可保持在904. 8 m A·h/g.在1C倍率下,放电容量最高可达1036. 9 m A·h/g,循环250周后仍有763. 0 m A·h/g,展现出了良好的倍率性能和循环稳定性.

关键词：锂硫电池金属有机框架化学吸附

Spacing graphene and Ni-Co layered double hydroxides with polypyrrole for high-performance supercapacitors

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Journal of Materials Science & Technology 2020年第20期52卷 190-197页

作者： Jing Liang Cuili Xiang yongjin Zou Xuebu Hu Hailiang chu Shujun Qiu Fen Xu Lixian Sun Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin 541004China Chongqing University of Technology College of Chemistry&Chemical EngineeringChongqing 400054China

The urgent need of high-performance of energy storage devices triggers us to design newly class of ***,the materials feature with high conductivity,abundant pore s and excellent ***,a sandwiched hybrid composite containing reduced graphene oxide,polypyrrole and Ni-Co layered double hydroxides(RGO/PPy/NiCo-LDH) was prepared in a facile *** polypyrrole was incorporated in the two dimensional(2D) nanosheets,which not only serve as the spacer to increase the surface area,but also enhance the conductivity of the *** obtained architecture was employed as an advanced electrode in a *** electrode shows an ultrahigh specific capacitance(2534 F g^-1 at 1 A g^-1) and good cycling efficiency(78 % after 5000 cycles).Moreover,an asymmetric cell based RGO/PPy/NiCo-LDH composite demonstrates excellent electrochemical properties and good prospect of practical use.

关键词： Graphene Ni-Co layered double hydroxides Polypyrrole Supercapacitor Porous carbon

Encapsulation of hollow Cu_(2)O nanocubes with Co_(3)O_(4)on porous carbon for energy-storage devices

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Journal of Materials Science & Technology 2020年第20期52卷 182-189页

作者： yongjin Zou Xi Zhang Jing Liang Cuili Xiang Hailiang chu Huanzhi Zhang Fen Xu Lixian Sun Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin 541004China

Co3 O4 is one of the most studied transition-metal oxides for use in energy-storage ***,its poor conductivity and stability limit its *** this study,a facile method for anchoring Co3 O4-encapsulated Cu2 O nanocubes on porous carbon(PC) to form Cu2 O@Co3 O4/PC was *** Cu2 O@Co3 O4/PC composite exhibited superior electrochemical performance as a supercapacitor electrode *** resultant supercapacitor delivered high specific capacitance(1096 F g^-1 at 1 A g^-1),high rate capability(83 % retention at 10 A g^-1),and excellent cycling stability(95 % retention of initial capacitance after 3000 cycles).Moreover,an asymmetric supercapacitor fabricated by coupling a Cu2 O@Co3 O4/PC positive electrode with a reduced graphene oxide negative electrode exhibited high energy density(32.1 W h kg^-1 at 700 W kg^-1).Thus,our results demonstrate that Cu2 O@Co3 O4/PC is a promising electrode material for energy-storage devices.

关键词： Cu_(2)O Co_(3)O_(4) Hollow nanocube Graphene Composite

Binary Co–Ni oxide nanoparticle-loaded hierarchical graphitic porous carbon for high-performance supercapacitors

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Journal of Materials Science & Technology 2020年第2期37卷 135-142页

作者： Yin Liu Cuili Xiang Hailiang chu Shujun Qiu Jennifer McLeod Zhe She Fen Xu Lixian Sun yongjin Zou Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin541004China Department of Chemistry Queen’s UniversityK7L 3N6Canada

Heteroatom doped graphitic porous carbon is highly desirable for electrochemical applications because of its excellent conductivity and high surface *** this study,highly uniform Co-Ni oxide nanoparticleloaded B,N-doped hierarchical graphitic porous carbon was prepared through a dual pyrolysis *** dispersed chitosan hydrogel was first used as a precursor to fabricate the porous carbon(GCS–C)at 700℃.Co and Ni oxide nanoparticles were further anchored on the porous carbon through chemical reduction and calcined at high *** structure of the porous carbon was optimized by the introduction of graphene to the chitosan *** graphitic degree of the porous carbon was significantly improved by the Co and Ni *** heteroatom B and N were found to be well doped in the *** features enable the composite to be an excellent candidate for supercapacitor *** composite demonstrates a high capacitance(1266.7 F g-1 at 1 A g-1)and excellent stability.

关键词： Graphitic carbon Graphene Metal oxides Supercapacitor Porous carbon

Massively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging

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Light(Science & Applications) 2023年第2期12卷 304-313页

作者： yongjin Na Hyunsoo Kwak Changmin Ahn Seung Eon Lee Woojin Lee chu-Shik Kang Jungchul Lee Junho Suh Hongki Yoo Jungwon Kim Korea Advanced Institute of Science and Technology(KAIST) Daejeon 34141Korea Korea Research Institute of Standards and Science(KRISS) Daejeon 34113Korea

High-speed and high-resolution imaging of surface profiles is critical for the investigation of various structures and mechanical dynamics of micro-and nano-scale *** particular,recent emergence of various nonlinear,transient and complex mechanical dynamics,such as anharmonic vibrations in mechanical resonators,has necessitated real-time surface deformation imaging with higher axial and lateral resolutions,speed,and dynamic ***,real-time capturing of fast and complex mechanical dynamics has been challenging,and direct time-domain imaging of displacements and mechanical motions has been a missing element in studying full-field structural and dynamic ***,by exploiting the electro-optic sampling with a frequency comb,we demonstrate a line-scan time-of-flight(TOF)camera that can simultaneously measure the TOF changes of more than 1000 spatial coordinates with hundreds megapixels/s pixel-rate and sub-nanometre axial resolution over several millimetres *** unique combination of performances enables fast and precise imaging of both complex structures and dynamics in three-dimensional devices and mechanical resonators.

关键词： deformation dimensional dynamics

Rambutan-like hierarchically porous carbon microsphere as electrodematerial for high-performance supercapacitors

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Carbon Energy 2021年第2期3卷 361-374页

作者： chunfeng Shao Shujun Qiu Guiming Wu Boyang Cui Hailiang chu yongjin Zou Cuili Xiang Fen Xu Lixian Sun Guangxi Key Laboratory of Information Materials School of Materials Science and EngineeringGuangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsGuilin University of Electronic TechnologyGuilinChina Key Laboratory of Fuel Cell Technology of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouChina

Used as high-performance electrodes,both structural and compositional alterations of carbon materials play very important roles in energy conversion/storage *** in supercapacitors,hierarchical pores and heteroatom doping in carbon materials are *** the rambutan-like hierarchically porous carbon microspheres(PCMs)have been constructed via a hydrothermal treatment,followed by carbonization/*** hierarchically porous microstructure is composed of three-dimensional porous carbon networks,which give rise to a large surface ***,N and O functional groups are introduced in the as-prepared samples,which could generate the extra *** from the interconnected hierarchical and open structure,PCM exhibits outstanding capacitive performance,for example,superior specific capacitance and rate capability(397 and 288 F g^(−1) at 0.5 and 20A g^(−1),respectively),as well as long cycling stability(about 95%capacitance retention after 10,000 cycles).These encouraging results may pave an efficient way to fabricate advanced supercapacitors in the future.

关键词： DTPA glucose hierarchically porous carbon rambutan-like microspheres supercapacitors