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Science China(Technological Sciences) 2021年第12期64卷 2662-2675页

作者： li ChongYang li zhiqi JIANG ZaiNan CUI ShiPeng liU Hong CAI HeGao State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China

Autonomous planning is a significant development direction of the space manipulator,and learning from demonstrations(LfD)is a potential strategy for complex tasks in the ***,separating control from planning may cause large torque fluctuations and energy consumptions,even instability or danger in control of space manipulators,especially for the planning based on the human ***,we present an autonomous planning and control strategy for space manipulators based on LfD and focus on the dynamics uncertainty problem,a common problem of actual *** process can be divided into three stages:firstly,we reproduced the stochastic directed trajectory based on the Gaussian process-based LfD;secondly,we built the model of the stochastic dynamics of the actual manipulator with Gaussian process;thirdly,we designed an optimal controller based on the dynamics model to obtain the improved commanded torques and trajectory,and used the separation theorem to deal with stochastic characteristics during *** evaluated the strategy with locating pre-screwed bolts experiment by Tiangong-2 manipulator system on the *** result showed that,compared with other strategies,the strategy proposed in this paper could significantly reduce torque fluctuations and energy consumptions,and its precision can meet the task requirements.

关键词： space manipulator optimal control dynamics uncertainty learning from demonstrations

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NO and H_2O_2 induced by Verticillium dahliae toxins and its influence on the expression of GST gene in cotton suspension cells

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Chinese Science Bulletin 2007年第10期52卷 1347-1354页

作者： JIA zhiqi YUAN HaiYong li YingZhang State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University Beijing100094 China

Nitric oxide (NO) and hydrogen peroxide (H2O2) have been shown to be important signaling molecules that participate in the regulation of several physiological processes. In particular, they have significant role in plant resistance to pathogens by contributing to induction defense genes. Here, whether NO and H2O2 participate in the resistance responses against Verticillium dahliae toxins (VD-toxins) and their effects on the expression of GST gene are studied. The results reveal that NO and H2O2 are produced as part of a complex network of signals that respond to VD-toxins and may converge to function both synergistically and independently by inducing resistant responses. GST gene is potentially involved in the resistance mechanism in the cotton suspension cells. NO induces the expression of GST gene independently of H2O2. H2O2 may be a more potent signal in the resistance responses against VD-toxins.

关键词：棉花大丽轮枝菌毒素诱导 NO H2O2 棉花悬浮培养细胞 GST基因过表达

镁质水泥基多相胶凝材料改性固化淤泥路用性能试验研究

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公路交通科技 2025年第1期42卷 85-93页

作者：王协群桂忆宁刘宁李智奇韩仲邹维列武汉理工大学土木工程与建筑学院湖北武汉430070 湖南省水利水电勘测设计规划研究总院有限公司湖南长沙410100 武汉大学土木建筑工程学院湖北武汉430072

【目标】针对不能直接用作路基填料的武汉市两湖隧道东湖段固化淤泥,提出基于绿色环保的氯氧镁水泥,结合高钙粉煤灰和粒化高炉矿渣这2种工业固废料,复合而成镁质水泥基多组分胶凝材料(M—F—G),对固化淤泥进一步加以改性的方法。评价氯... 详细信息

【目标】针对不能直接用作路基填料的武汉市两湖隧道东湖段固化淤泥,提出基于绿色环保的氯氧镁水泥,结合高钙粉煤灰和粒化高炉矿渣这2种工业固废料,复合而成镁质水泥基多组分胶凝材料(M—F—G),对固化淤泥进一步加以改性的方法。评价氯氧镁水泥基的多组分胶凝材料改善固化淤泥路用性能的效果,并探明其微观机理,为固化淤泥的路基填料化利用技术提供参考。【方法】通过界限含水率、加州承载比、压缩性、水稳定性、扫描电镜和核磁共振等宏、微观试验,研究了多组分胶凝材料配比、养护龄期等因素对固化淤泥改性效果的影响及其微观机制。【结果】M—F—G多组分胶凝材料使固化淤泥的液限、塑性指数和压缩系数降低,而加州承载比和水稳定性显著提高;粉煤灰+矿渣的“双掺”比仅粉煤灰或仅矿渣的“单掺”与氯氧镁水泥发生的水化反应更为充分,改性效果更佳。微观试验揭示,由M—F—G多组分胶凝材料改性生成的水化产物能有效地降低固化淤泥的孔隙率,水化硅酸镁(M—S—H)型凝胶物质包覆土颗粒并形成蜂窝结构,从而使固化淤泥的路用性质得到了显著的改善。【应用】综合试验结果与路基规范要求,提出了镁质水泥基多组分胶凝材料的最优配比和改性固化淤泥的最佳养护龄期。

关键词：道路工程路用材料室内试验固化淤泥氯氧镁水泥微观机理

Improving the performance of perovskite solar cells by surface passivation

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Journal of Energy Chemistry 2020年第7期29卷 202-207,I0007页

作者： Wenbin Han Guanhua Ren zhiqi li Minnan Dong Chunyu liu Wenbin Guo State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012JilinChina College of Materials Science and Engineering Jilin UniversityChangchun 130012JilinChina

NiO has a perfect-aligned energy level with CH3 NH3 Pb I3 perovskite such that it serves as a hole transport layer(HTL),but Ni O-based perovskite solar cells(PSCs)still suffer from low efficiency due to the poor interface contact between the perovskite layer and the Ni O HTL,and haphazardly stacked perovskite ***,poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(1,4-benzo-{2,1,3}-thiadiazole)](PFBT)is introduced between the Ni O and perovskite layers in the form of a polymer aggregate to enhance perovskite crystallinity and decrease the interface charge recombination between perovskite and Ni O in PSCs,resulting in an improved ***,PFBT modified perovskite films showed sharper,smoother,and more compact crystalline grains with fewer grain boundaries,leading to the decreased nonradiative *** study offers a simple strategy to achieve highly efficient PSCs with the incorporation of polymer semiconductor aggregates to passivate the interface between the perovskite and Ni O layers.

关键词： Perovskite solar cells Hole transport Interface passivation Surface traps Crystallinity

Surface Passivation of Perovskite Solar Cells Toward Improved Efficiency and Stability

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Nano-Micro Letters 2019年第3期11卷 240-248页

作者： zhiqi li Jiajun Dong Chunyu liu Jiaxin Guo liang Shen Wenbin Guo State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilinUniversity2699Qianjin StreetChangchun130012People’s Republic of China State Key Laboratory of Superhard Materials Jilin University2699 Qianjin StreetChangchun130012People’s Republic of China

The advancement of perovskite solar cells(PVSCs)technology toward commercialized promotion needs high efficiency and optimum *** introducing a small molecular material such as tetratetracontane(TTC,CH3(CH2)42CH3)at the fullerene(C60)/perovskite interface of planar p-i-n PVSCs,we significantly reduced the interfacial traps,thereby suppressing electron recombination and facilitating electron ***,an improved efficiency of 20.05% was achieved with a high fill factor of 79.4%,which is one of the best performances for small molecular-modified ***,the hydrophobic TTC successfully protects the perovskite film from water *** a result,we realized a better long-term stability that maintains 87% of the initial efficiency after continuous exposure for 200 h in air.

关键词： Perovskite solar cells Surface passivation Charge transport Surface defect

Engineering CoMoO_(4) in reduced graphene oxide as superior cathode hosts for advanced room-temperature sodium-sulfur batteries

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Journal of Energy Chemistry 2023年第11期86卷 620-627,I0013页

作者： Xin Ye Sainan Luo zhiqi li Jiafeng Ruan Yuepeng Pang Junhe Yang John Wang Shiyou Zheng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China 2 Department of Materials Science and Engineering National University of SingaporeSingapore 119077Singapore

Promising room-temperature sodium-sulfur(RT Na-S)battery systems rely on purposely designed highperforming and low-cost electrode ***,there are the challenges of irreversible dissolution and slow redox kinetics of NaPSs in the complete discharge of sulfur ***,engineered CoMoO_(4)in reduced graphene oxide(CoMoO_(4)@rGO)is reported as a class of superior cathode hosts for RT Na-S *** CoMoO_(4)@rGO matrix is designed to facilitate the reversible sodiation and desodiation of sulfur,considering the strong chemisorption between sulfur(and short-chain sodium sulfides)and CoMoO_(4),which alleviates the shuttle effect of sodium sulfides and accelerates the electrochemical reaction rate at *** obtained S/CoMoO_(4)@rGO cathode with~52%S loading exhibits a high capacity of520.1 mA h g^(-1)after 100 cycles at 0.1 A g^(-1).Moreover,an enhanced long-term performance at high current densities(212.2 mA h g^(-1)at 4 A g^(-1)over 1000 cycles)with high Coulombic efficiency(~100%)is also *** work demonstrates a novel multifunctional additive for RT Na-S battery cathodes,which is expected to promote the long-waited development towards practical applications of RT Na-S batteries.

关键词： Sodium-sulfur battery Cathode CoMoO_(4) Reduced graphene oxide

Field measurement of wind-induced stress on glass facade of a coastal high-rise building

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Science China(Technological Sciences) 2011年第11期54卷 2587-2596页

作者： li ZhengNong LUO DieFeng SHI WenHai li zhiqi liANG XiaoHan Key Laboratory of Building Safety and Energy Efficiency of Hunan University Changsha 410082 China College of Architecture and Civil Engineering of Wenzhou University Wenzhou 325035 China

The glass facade of high-rise building in coastal areas is vulnerable under *** research works in the literature on facade's wind-resistance performance,however,have some limitations to apply to this *** typhoon landing,the whole facade will vibrate and deform due to the change of atmosphere,temperature and impacted torrential rain,to result in a quite different strain or stress distribution in the glass facade from those in model test and wind tunnel *** this paper,the field measurement on glass facade of a coastal high-rise building in Xiamen was performed,the wind pressure on the glass facade was measured and a large number of windinduced stress data were obtained during typhoon *** relationship between wind pressure and stress or strain of the glass panel was analyzed and the situation of stress distribution was summarized.

关键词： 0high-rise building glass facade wind-induced stress field measurement typhoon

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羟基COF的合成及作为锂硫电池正极材料(硫载体)的应用

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广州化学 2025年第1期50卷 51-55,I0003页

作者：石元昊李智琪付玉林桂雪峰许凯中国科学院广州化学研究所广东广州510650 中国科学院大学北京101408 中国科学院新型特种精细化学品工程实验室广东广州510650 国科广化韶关新材料研究院广东韶关512400 国科广化(南雄)新材料研究院有限公司广东南雄512400

用含醛基的三官能度的2,4,6-三甲酰间苯三酚(TP)和含胺基双官能度的4,4'-二氨基-[1,1'-联苯]-3,3'-二醇(DBD)通过席夫碱反应得到羟基化的共价有机框架材料(OH-COF),将含OH-COF材料作为锂硫正极的硫载体,利用熔融法制备了一种具有良好性... 详细信息

用含醛基的三官能度的2,4,6-三甲酰间苯三酚(TP)和含胺基双官能度的4,4'-二氨基-[1,1'-联苯]-3,3'-二醇(DBD)通过席夫碱反应得到羟基化的共价有机框架材料(OH-COF),将含OH-COF材料作为锂硫正极的硫载体,利用熔融法制备了一种具有良好性能的硫正极材料。用傅里叶红外光谱(FTIR)和比表面积测试(BET)表征了OH-COF的结构,用紫外紫外可见分光光度计(UV)测试了OH-COF对多硫化的吸附能力,采用倍率测试和长循环测试评价OH-COF/S正极的电化学性能。结果表明,OH-COF较高的比表面和-OH结构可以吸附多硫化锂、抑制穿梭效应,同时OH-COF结构中的含氧基团也可以为li^(+)在正极的迁移提高位点,使电池性能有明显提高。这种基于OH-COF的正极材料的锂硫电池在0.5 C倍率下经过100圈的循环后,电池可以保持660.1 mAh/g比容量,其容量保持率可达64.2%。

关键词：锂硫电池硫载体材料共价有机框架材料穿梭效应高比表面积

Tailoring the interaction of covalent organic framework with the polyether matrix toward high-performance solid-state lithium metal batteries

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Carbon Energy 2022年第4期4卷 506-516页

作者： Zhen Hou Shuixin Xia Chaoqun Niu Yuepeng Pang Hao Sun zhiqi li Yuxi Xu Shiyou Zheng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghaiChina School of Engineering Westlake UniversityHangzhouChina

Solid polymer electrolyte is one of the most promising avenues to construct next-generation energy storage systems with high energy density,high safety,and flexibility,yet the low ionic conductivity at room temperature and poor high-voltage tolerance have limited their practical *** address the above issues,we design and synthesize a highly crystalline,vinyl-functionalized covalent organic framework(V-COF)rationally grafted with ether-based segments through solvent-free in situ polymerization.V-COF can afford a fast li+conduction highway along the one-dimensional nanochannels and improve the high-voltage stability of ether-based electrolytes due to the rigid and electrochemically stable *** as-formed solid-state electrolyte membranes demonstrate a superior ionic conductivity of 1.1×10^(−4)S cm^(−1)at 40℃,enhanced wide electrochemical window up to 5.0 V,and high Young's modulus of 92 *** li symmetric cell demonstrates ultralong stable cycling over 600 h at a current density of 0.1 mA cm^(−2)(40℃).The assembled solid-state li|liFePO4 cells show a superior initial specific capacity of 136 mAh g^(−1)at 1 C(1 C=170 mA g^(−1))and a high capacity retention rate of 84%after 300 *** study provides a novel and scalable approach toward high-performance solid ether-based lithium metal batteries.

关键词： covalent organic framework energy storage in situ polymerization solid polymer electrolyte

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建筑用光伏组件晶体硅电池疲劳损伤研究

太阳能学报 2014年第6期35卷 1004-1009页

作者：黎之奇湖南大学土木工程学院长沙410082

针对建筑用3.2 mm玻璃面板光伏组件,对组件晶体硅电池片在循环荷载作用下的损伤行为进行实验研究,结果表明,在恒幅循环荷载作用下电池片的损伤累积是非线性的,在循环加载的初期,电池片的损伤有一个快速发展的过程,因此在一些风压较高的... 详细信息

针对建筑用3.2 mm玻璃面板光伏组件,对组件晶体硅电池片在循环荷载作用下的损伤行为进行实验研究,结果表明,在恒幅循环荷载作用下电池片的损伤累积是非线性的,在循环加载的初期,电池片的损伤有一个快速发展的过程,因此在一些风压较高的地区应用建筑光伏时,应考虑由于外荷载作用所导致的组件性能衰减。

关键词：光伏组件晶体硅电池循环荷载疲劳损伤