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Journal of Energy Chemistry 2024年第6期93卷 436-442,I0011页

作者： Xingrui Zhang Jian Zhang Wei Wang Boyuan Hu Yayu Dong debin xia Kaifeng Lin Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Here,a novel strategy is proposed targeting the volatility of A-site cations and the disordered arrangement of perovskite grains through employing Cs~+contained metal-organic frameworks In-aip(Cs)obtained by ion-exchange and crystalline transform.Interatomic forces between Cs-O atoms split the pore channels of the pristine In-aip,endowing In-aip(Cs)with multidimensional charge transport channels,In addition,the partially freed Cs~+in the interlayer compensates for the vacancy of A-site cations during the perovskite preparation process.The In-aip(Cs)modified perovskite films have a flat morphology,large grains and excellent optoelectronic properties.Benefiting from the high-quality perovskite films and faster charge extraction,the In-aip(Cs)-modified PSCs achieved a champion PCE of 23.03%,superior to the In-aip-modified(22.29%)and control device(21.13%),More importantly,the unencapsulated PSCs modified with In-aip(Cs)exhibited outstanding humidity and thermal stability.Over a period of almost 1000 h,the unencapsulated In-aip(Cs)-modified device retained 85%of its initial PCE after storing in a glove box at 85℃,and retained 87%of the primary PCE upon storage in ambient condition at 25℃under a humidity of 40%.

关键词： Metal-organic frameworks PSCs Stability Defect passivation

Multifunctional MOF@COF Nanoparticles Mediated Perovskite Films Management Toward Sustainable Perovskite Solar Cells

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Nano-Micro Letters 2024年第9期16卷 195-208页

作者： Yayu Dong Jian Zhang Hongyu Zhang Wei Wang Boyuan Hu debin xia Kaifeng Lin Lin Geng Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China School of Materials Science and Engineering East China Jiaotong UniversityNanchang 330013JiangxiPeople’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China

Although covalent organic frameworks(COFs)with highπ-conjugation have recently exhibited great prospects in perovskite solar cells(PSCs),their further application in PSCs is still hindered by face-to-face stacking and aggregation issues.Herein,metal-organic framework(MOF-808)is selected as an ideal platform for the in situ homogeneous growth of a COF to construct a core-shell MOF@COF nanoparticle,which could effectively inhibit COF stacking and aggregation.The synergistic intrinsic mechanisms induced by the MOF@COF nanoparticles for reinforcing intrinsic stability and mitigating lead leakage in PSCs have been explored.The complementary utilization ofπ-conjugated skeletons and nanopores could optimize the crystallization of large-grained perovskite films and eliminate defects.The resulting PSCs achieve an impressive power conversion efficiency of 23.61%with superior open circuit voltage(1.20 V)and maintained approximately 90%of the original power conversion efficiency after 2000 h(30-50%RH and 25-30℃).Benefiting from the synergistic effects of the in situ chemical fixation and adsorption abilities of the MOF@COF nanoparticles,the amount of lead leakage from unpackaged PSCs soaked in water(<5 ppm)satisfies the laboratory assessment required for the Resource Conservation and Recovery Act Regulation.

关键词： Perovskite solar cells Covalent organic frameworks Metal-organic frameworks Lead leakage Stability

Heat diffusion optimization in high performance perovskite solar cells integrated with zeolite

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Journal of Energy Chemistry 2023年第11期86卷 308-317,I0007页

作者： Wei Wang Jian Zhang Kaifeng Lin Jiaqi Wang Boyuan Hu Yayu Dong debin xia Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Heat accumulation inside perovskite solar cells causes the decomposition of the perovskite layer and hole transport materials(HTMs)under working conditions,yielding a decrease in long-term stability.Here,we present a zeolite-assisted heat conduction strategy by introducing economic zeolite crystals(e.g.,NaX,NaY,and ZSM-5)as a cooling filter to induce heat diffusion.The fitted thermal diffusion kinetic equation from real-time infrared thermal imaging technology reveals the zeolite skeleton assisted thermal co nduction mechanism of internal lattice vibration.Additionally,the nearly twofold improved conductivity of the modified HTM film is benefited from Na^(+)hopping on the supercages of the zeolite,therefore,the best-performed device with a rapid heat diffusion and defect inhibition obtains a remarkable power conversion efficiency of 23.42%.Both of NaX modified sprio-OMeTAD and PTAA based devices exhibit excellent operational stability after heating 1000 h at 85℃under N_(2)condition.This work demonstrates the potential application of economical porous zeolite materials in improving the thermal stability of PSCs.

关键词： Zeolite Heat diffusion Perovskite solar cells Operational stability

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战略性关键矿产的地缘政治研究

地理学报 2024年第6期79卷 1612-1628页

作者：夏启繁杜德斌华东师范大学全球创新与发展研究院上海200062 华东师范大学世界地理与地缘战略研究中心上海200062 华东师范大学地理科学学院上海200241 隆德大学环境与能源系统研究中心瑞典隆德22100

战略性关键矿产是主导未来能源转型和科技革命的关键原料。在全球气候变化和产业变革背景下,大国争夺战略性关键矿产的地缘政治现象已经日益凸显,有关研究却相对有限。为此,本文通过梳理战略性关键矿产的地缘政治研究,阐释战略性关键矿... 详细信息

战略性关键矿产是主导未来能源转型和科技革命的关键原料。在全球气候变化和产业变革背景下,大国争夺战略性关键矿产的地缘政治现象已经日益凸显,有关研究却相对有限。为此,本文通过梳理战略性关键矿产的地缘政治研究,阐释战略性关键矿产的地缘政治逻辑,并尝试揭示出战略性关键矿产的基本地缘政治格局。当前战略性关键矿产的地缘政治研究仍以西方为主要阵地,国内研究尚处于起步阶段。战略性关键矿产的地缘政治问题由气候变化与能源转型所提升的需求意识、科技革命与军工革新所加剧的竞争意识,以及供应链高度集中所产生的危机意识联合驱动产生。工艺复杂和应用前沿决定了产业技术竞争引领关键矿产地缘政治的未来走势,因而大国始终是世界舞台中的绝对主角。美国是全球关键矿产地缘政治竞争的策源中心,中国虽具一定的禀赋优势,但正面临着严峻的安全挑战。中国应当敏锐洞悉、有所谋划,重点是以理论研究为基础,加强战略性关键矿产的地缘政治研究;以重点领域为抓手,完善战略性关键矿产的地缘经济部署;以国家需求为导向,构筑战略性关键矿产的地缘安全战略。

关键词：战略性关键矿产地缘政治气候变化能源转型高科技

Metal-organic frameworks with mixed-ligands strategy as heterogeneous nucleation center to assist crystallization for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2023年第2期77卷 1-10,I0001页

作者： Yayu Dong Shuang Gai Jian Zhang Ruiqing Fan Boyuan Hu Wei Wang Wei Cao Jiaqi Wang Ke Zhu debin xia Lin Geng Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Deep-level defects and random oriented configuration in perovskite crystallization process would cause the nonradiative recombination and further affect the performance of perovskite solar cells(PSCs).Herein,two metal-organic frameworks(MOFs)with tunable Lewis-base passivation sites have been constructed(Cd-Httb and Cd-Httb-BDC,Httb=5-(4-(1H-1,2,4-triazole-1-yl)benzyl)-1h-tetrazole,BDC=1,4-dicarboxybenzene)to eliminate deep-level defects and simultaneously as nanostructured heterogeneous nucleation seed to assist the growth of large-grained perovskite films.Compared with the control and Cd-Httb,Cd-Httb-BDC designed with mix-ligands strategy exhibited the enhanced inducted effect on the crystallization and nucleation of high-quality perovskite films during annealing process.Consequently,the resultant Cd-Httb-BDC-modified device achieved higher power conversion efficiency(PCE)(22.18%)than the control(20.89%)and Cd-Httb(21.56%).Meanwhile,the unencapsulated Cd-Httb-BDC-modified device still maintained 90%of initial PCE after 1500 h in ambient conditions and exhibited enhanced thermal stability(85℃ in N_(2) atmosphere).This work presented a successful example of mixligands strategy on construction of high-quality MOF-assisted perovskite films for high-efficient and stable PSCs.

关键词： Perovskite solar cells Metal organic frameworks Mixed ligands strategy Passivation Stability

Benzothiophene and benzosulfone fused pyrazino[2,3-g]quinoxaline:Synthesis and semiconducting properties

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Chinese Chemical Letters 2023年第2期34卷 563-566页

作者： Fangwei Ding debin xia Xiping Ding Ruibin Deng Congwu Ge Yulin Yang Ruiqing Fan Kaifeng Lin Xike Gao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China

A novel air-stable n-type benzothiaphene endcapped azaarene(BTPQ) and its sulfonated derivative(BSPQ) were prepared via two pathways and characterized by NMR, UV–vis, fluorescence and cyclic voltammetry spectroscopy. Symmetrically introducing four nitrogen atoms into acenes, the semiconductor properties could be changed from p-type to n-type detected through the space charge limited current(SCLC) method. After sulfonation of BTPQ, BSPQ is with deeper frontier orbital energy levels and enhanced the electron mobility.

关键词： Azaarenes Deep LUMO levels n-type Organic semiconductor Polycyclic aromatic hydrocarbons

Tetra-phthalimide end-fused bifluorenylidene: Synthesis and characterization

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Chinese Chemical Letters 2019年第1期30卷 259-262页

作者： debin xia Fangyuan Zhang Zhigang Liu Linghao Meng Ruiqing Fan Yulin Yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology

A novel electron acceptor, namely, tetra-phthalimide end-fused bifluorenylidene(3 D-imide) was designed and synthesized. In comparison to its framework analogue 12,12'-bidibenzo[b,h]fluorenylidene(BF-3), the electron withdrawing capability and optical absorption were strengthened and enlarged,respectively. Moreover, photoluminescence quenching experiments were carried out, which confirmed 3D-imide could be a good candidate for nonfullene organic photovoltaics. Finally, we gained more insight into its electronic properties through density functional theory calculation.

关键词： Bifluorenylidene Polycycles Electron acceptor Twisting Three dimensional

Super rigid tris-spirobifluorenes:Syntheses and properties

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Chinese Chemical Letters 2021年第1期32卷 397-400页

作者： Luyao Zhao Chunbo Duan Dongxue Ding Shihui Liu debin xia Ying Guo Hui Xu Martin Baumgartend College of Chemical and Environmental Engineering.Horbin Universty of Science and Tetenologo Herbin 150040 China MIT Key Laboratory'of Crtcal Materials Technology for New Energy Conversion and Storge School of Chemisty and Chermical Engineering Harbin Instiute of Technology.Harbin 150001 China Key Laboratory of Functional lnorganic Material Chemistry Ministy of EducarionSchool of Chermistry and Materiol ScienceHeilongjiang UniversiyHarbin 150080China Max Planck Istitute for Pobymer Research Mainz 55128Cermpay

In this work,a blue emitter with a 3 D rigid structure composed of multiple spirobifluorene(3-Spiro) has been synthesized and characterized.Through a detailed study of the electrochemical and photophysical properties of 3-Spiro,we have evidenced that 3-Spiro can be applied as an active component of organic light-emitting diodes(OLEDs).The device with 5% doping rate of 4 CzPNPh exhibits high external quantum efficiency(EQE) of 11%,which proves the potential of 3 D rigid structure emitters for OLEDs.

关键词： OLEDs Spirobifluorene Blue emitter Rigid structure Three dimensional

A Fuzzy PID Algorithm for a Novel Miniature Spherical Robots with Three-dimensional Underwater Motion Control

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Journal of Bionic Engineering 2020年第5期17卷 959-969页

作者： Liwei Shi Yao Hu Shuxiang Su Shuxiang Guo Huiming Xing Xihuan Hou Yu Liu Zhan Chen Zan Li debin xia Key Laboratory of Convergence Medical Engineering System and Healthcare Technology the Ministry of Industry and Information TechnologySchool of Life ScienceBeijing Institute of TechnologyBeijing 100081China Faculty of Engineering Kagawa University2217-20 HayashichoTakamatsuKagawa 761-0396Japan

We proposed and developed a small bionic amphibious spherical robot system for tasks such as coastal environment monitoring and offshore autonomous search and rescue.Our third-generation bionic small amphibious spherical robots have many disadvantages,such as the lack of maneuverability and a small operating range.It is difficult to accomplish underwater autonomous motion control with these robots.Therefore,we proposed a fourth-generation amphibious spherical robot.However,the amphibious spherical robot developed in this project has a small and compact design,with limited sensors and external sensing options.This means that the robot has weak external information collection capabilities.We need to make the real time operation of the robot's underwater motion control system more reliable.In this paper,we mainly used a fuzzy Proportional-Integral-Derivative(PID)control algorithm to design an underwater motion control system for a novel robot.Moreover,we compared PID with fuzzy PID control methods by carrying out experiments on heading and turning bow motions to verify that the fuzzy PID is more robust and exhibits good dynamic performance.We also carried out experiments on the three-dimensional(3D)motion control to validate the design of the underwater motion control system.

关键词： bionic amphibious spherical robot fuzzy PID control underwater motion control system underwater three-dimensional motion water-jet thruster

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酱卤鸭脖的特征风味物质剖面解析

现代食品科技 2024年第3期40卷 259-271页

作者：于恒和马一凡韩东黄峰李侠郭德斌张春晖宁夏大学食品与葡萄酒学院宁夏银川750021 中国农业科学院农产品加工研究所农业农村部农产品加工综合性重点实验室北京100193 江西煌上煌集团食品股份有限公司江西南昌330052

为构建酱卤鸭脖的特征风味指纹图谱,该文利用电子鼻、电子舌、气相色谱-质谱联用技术(Gas Chromatography-Mass Spectrometry,GC-MS)和高效液相色谱技术(High Performance Liquid Chromatography,HPLC)结合气味活性值(Odor Activity Value,OAV)、滋味活性值(Taste Activity Value,TAV)和味精当量(Equivalent Umami Concentration,EUC),对3款市售酱卤鸭脖(W牌、J牌、H牌)的特征风味进行剖面解析。结果表明,W牌、J牌和H牌中分别鉴定出44、37、32种挥发性风味物质。其中丁香酚、芳樟醇、肉桂酸乙酯、茴香脑等因具有较高OAV和特殊香气被划定为3种鸭脖共有的特征挥发性风味物质,可贡献甜香、果香和脂香。电子鼻结果则表明3种鸭脖在含硫化合物和氮氧化合物上存在差异;谷氨酸、丙氨酸、5,-肌苷酸、5,-鸟苷酸因TAV>1被确定为3种酱卤鸭脖的特征滋味物质,对鲜味和甜味贡献突出。此外,H牌的EUC值(4.41 g MSG/100 g)显著高于其他两组(P<0.05),说明其鲜味程度优于J牌和W牌鸭脖,这也与电子舌检测结果保持一致。该研究可以为酱卤鸭脖特色风味保持及产品风味改善提供理论依据。

关键词：酱卤鸭脖特征挥发性风味物质特征滋味物质剖面解析

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