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Oxygen-deficient TiO_(2) Yolk-shell Spheres for Enhanced Lithium Storage Properties

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Energy & Environmental Materials 2022年第1期5卷 238-244页

作者： Zhaoqian Li Yuqi Peng Chaofeng Liu Xianxi Zhang Xiuling Li Yang Huang yingke ren Denghui Ji Guozhong Cao Key Laboratory of Photovoltaic and Energy Conservation Materials CASInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China College of Science Hebei University of Science and TechnologyShijiazhuang 050018China Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage&Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252000China Department of Materials Science and Engineering University of WashingtonSeattle WA 98195USA College of Physics Mechanical and Electronical CollegeShijiazhuang UniversityShijiazhuang City 050035P.R.China College of Physics and Information Engineering Hebei Advanced Thin Films LaboratoryHebei Normal UniversityShijiazhuang City 050024P.R.China

Anatase TiO_(2) is a promising anode material for lithium-ion batteries(LIBs)owing to its low cost and ***,the intrinsically kinetic limits seriously hindered its lithium-ion storage *** we present that anatase TiO_(2) with rich oxygen vacancies can enhance its lithium-ion storage *** synthesize anatase TiO_(2) with well-retained hierarchical structure by annealing the H_(2)Ti_(5)O_(11)·3H_(2)O yolk-shell spheres precursor in nitrogen *** and XPS data evidence that the oxygen-deficient environment could generate abundant oxygen vacancies in the as-derived anatase TiO_(2),which leads to improved electron conductivity and reduced charge-transfer *** rich oxygen vacancies and high structural integrity of the hierarchical yolk-shell spheres enable the as-derived anatase TiO_(2) yolk-shell spheres with a high specific capacity of 280 mAh g^(-1) at 100 mA g^(-1) and 71%of capacity retention after 5000 cycles at 2 A g^(-1).

关键词： anatase TiO_(2) lithium-ion batteries oxygen vacancies yolk-shell spheres

Molecular exchange and passivation at interface afford high-performing perovskite solar cells with efficiency over 24%

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Journal of Energy Chemistry 2023年第7期82卷 219-227,I0005页

作者： Jianjun Sun Wangchao Chen yingke ren Yunjuan Niu Zhiqian Yang Li'e Mo Yang Huang Zhaoqian Li Hong Zhang Linhua Hu Key Laboratory of Photovoltaic and Energy Conservation Materials Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031AnhuiChina School of Chemistry and Chemical Engineering Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of TechnologyHefei 230009AnhuiChina College of Science Hebei University of Science and TechnologyShijiazhuang 050018HebeiChina Hebei Computational Optical Imaging and Photoelectric Detection Technology Innovation Center Hebei International Joint Research Center for Computational Optical Imaging and Intelligent SensingSchool of Mathematics and Physics Science and EngineeringHebei University of EngineeringHandan 056038HebeiChina University of Science and Technology of Chin1 Anhui 230026HefeiChina

The interface is crucial for perovskite solar cells(PSCs).However,voids at interfaces induced by the trapped hygroscopic dimethyl sulfoxide(DMSO)can reduce charge extraction and accelerate the film degradation,seriously damaging the efficiency and *** this work,4,4’-dinonyl-2,2’-dipyridine(DN-DP),a Lewis base with long alkyl chains is introduced to solve this *** calculated and experimental results confirm that the dipyridyl group on DN-DP can more strongly coordinate with Pb^(2+)than that of the S=O group on *** strong coordination effect plays a crucial role in removing the DMSO-based adduct and reducing the formation of *** to the electron-donating properties of pyridine,the existence of DN-DP in the perovskite film can passivate the defects and optimize the energy level alignment of the perovskite *** open-circuit voltage(VOC)of the DN-DP-based PSC is improved from 1.107 V(control device)to 1.153 V,giving rise to a power conversion efficiency(PCE)of24.02%.Furthermore,benefiting from the moisture resistance stemming from the hydrophobic nonyl group,the PCE retains 90.4%of the initial performance after 1000 h of storage in the ambient condition.

关键词： Perovskite solar cell Anti-solvent 4 4′-Dinonyl-2 2′-dipyridine Optimized interfaceStability

不同溶剂诱导的中间相对钙钛矿薄膜结晶的影响

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石家庄铁道大学学报（自然科学版） 2023年第4期36卷 114-119页

作者：尚志丰任英科石家庄铁道大学工程训练中心河北石家庄050043 河北科技大学理学院河北石家庄050018

有机-无机杂化钙钛矿(MAPbI_(3))太阳能电池的光电转化效率增长飞速而被广泛关注。然而由于PbI_(2)的生长速率要快于MAI的生长速率,导致钙钛矿晶体的形貌难以控制。因此,制备MAPbI_(3)过程中统一MAI和PbI_(2)生长速率极为重要。二甲基... 详细信息

有机-无机杂化钙钛矿(MAPbI_(3))太阳能电池的光电转化效率增长飞速而被广泛关注。然而由于PbI_(2)的生长速率要快于MAI的生长速率,导致钙钛矿晶体的形貌难以控制。因此,制备MAPbI_(3)过程中统一MAI和PbI_(2)生长速率极为重要。二甲基甲酰胺(DMF)和二甲基亚砜(DMSO)作为氧给体可与PbI_(2)形成配合物,用来制备致密的钙钛矿薄膜。通过改变前驱体溶液中DMF和DMSO的比例,调控中间相的形成过程实现了对晶体生长速率的调控。此外,DMSO与PbI_(2)的配位能力要强于DMF,并且DMSO更容易与路易斯酸PbI_(2)的S=O双键发生作用,影响晶体的生长速率。最后,基于最佳浓度的DMSO前驱体溶液制备的钙钛矿薄膜的光伏器件,其光电转化效率可以达到16.41%。

关键词：薄膜技术钙钛矿太阳能电池路易斯酸碱中间相调控形貌

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Sb_(2)S_(3):P3HT共混物改善TiO_(2)纳米棒阵列钙钛矿太阳电池的性能

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河北科技大学学报 2022年第2期43卷 204-210页

作者：郭丽峰郝彦忠任英科裴娟河北科技大学理学院河北石家庄050018

为解决钙钛矿太阳电池中MAPbI_(3)的不稳定性问题,提高电池性能,对以TiO_(2)纳米棒阵列作为电子传输层、Sb_(2)S_(3):P3HT共混物作为钙钛矿MAPbI_(3)修饰层的太阳电池进行了研究。首先,以SbCl_(3)作为锑源,Na_(2)S_(2)O_(3)作为硫源,采... 详细信息

为解决钙钛矿太阳电池中MAPbI_(3)的不稳定性问题,提高电池性能,对以TiO_(2)纳米棒阵列作为电子传输层、Sb_(2)S_(3):P3HT共混物作为钙钛矿MAPbI_(3)修饰层的太阳电池进行了研究。首先,以SbCl_(3)作为锑源,Na_(2)S_(2)O_(3)作为硫源,采用溶剂热法制备合适尺寸的Sb_(2)S_(3)纳米球;其次,通过超声分散法将Sb_(2)S_(3)与P3HT在氯苯溶液中共混得到Sb_(2)S_(3):P3HT共混物,将其旋涂于沉积了MAPbI_(3)薄膜的TiO_(2)纳米棒阵列上,形成FTO/TiO_(2)NR/MAPbI_(3)/Sb_(2)S_(3):P3HT复合膜,制备成TiO_(2)纳米棒阵列MAPbI_(3)/Sb_(2)S_(3):P3HT太阳电池;最后,采用SEM,XRD,J-V曲线和紫外可见吸收光谱等方法进行表征和测试。结果表明,制备的结构为FTO/TiO_(2)NR/MAPbI_(3)/Sb_(2)S_(3):P3HT/Spiro-OMeTAD/Ag的太阳电池,能量转换效率(PCE)最高达到了14.73%,与未采用Sb_(2)S_(3):P3HT共混物修饰的TiO_(2)纳米棒阵列MAPbI_(3)太阳电池相比,能量转换效率得到了明显提升。因此,Sb_(2)S_(3):P3HT共混物能避免出现钙钛矿MAPbI_(3)被氧化的不稳定性问题,可有效提高TiO_(2)纳米棒阵列MAPbI_(3)太阳电池的性能。

关键词：光电化学钙钛矿太阳电池 TiO_(2)纳米棒阵列 Sb_(2)S_(3):P3HT共混物 MAPbI_(3)

填补碘空位抑制δ-HC(NH2)2PbI3相以制备高效太阳电池

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Science China Materials 2020年第6期63卷 1015-1023页

作者：任英科张宁王茜朱俊李聪 State Key Lab of Advanced Display Technology Special Display and Imaging Technology Innovation Center of Anhui ProvinceAcademy of Opto-Electric TechnologyHefei University of TechnologyHefei 230009China College of Science Hebei University of Science and TechnologyShijiazhuang 050018China 32152 Troops Shijiazhuang 050018China School of Adv Mater and Nanotechnology Xidian UniversityXi'an 710126China

α-FAPbI3钙钛矿材料因具有广泛的吸光范围,近期在光电器件领域中得到了广泛关注.然而,FAI-PbI2-DMSO中间相会快速转变生成非钙钛矿相(δ-FAPbI3),并且带来不可控的过量PbI2,从而阻碍着光电转化效率的进一步提升.本文通过计算发现碘空... 详细信息

α-FAPbI3钙钛矿材料因具有广泛的吸光范围,近期在光电器件领域中得到了广泛关注.然而,FAI-PbI2-DMSO中间相会快速转变生成非钙钛矿相(δ-FAPbI3),并且带来不可控的过量PbI2,从而阻碍着光电转化效率的进一步提升.本文通过计算发现碘空位缺陷会导致钙钛矿材料的容忍因子变大,而且会引入弗仑克尔缺陷.因此,我们介绍了一种后处理的方法填补FAPbI3中的碘缺陷,来抑制δ-FAPbI3的形成.此外,一种新的中间相FAI-PbI2-DMSO-FACl可以制备出大于2μm的钙钛矿晶粒.由于这个方法提高了α-FAPbI3钙钛矿的结晶质量,基于该材料的光伏器件效率也得到了提升.本工作为制备α-FAPbI3钙钛矿材料和高效光伏器件提供了一个思路.

关键词： formamidinium perovskite solar cells iodine vacancy nonperovskite phase post-treatment

Localized Electrons Accelerated Ionic and Charge Transfer for Superior Lithium Storage

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renewables 2023年第5期1卷 572-581页

作者： Zhaoqian Li yingke ren Wangchao Chen Tingting Wei Lie Mo Yang Huang Hong Zhang Guozhong Cao Linhua Hu Key Laboratory of Photovoltaic and Energy Conservation Materials CASInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhui 230031 College of Science Hebei University of Science and TechnologyShijiazhuang 050018 School of Chemistry and Chemical Engineering Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of TechnologyHefei 230009 University of Science and Technology of China HefeiAnhui 230026 Hebei Computational Optical Imaging and Photoelectric Detection Technology Innovation Center Hebei International Joint Research Center for Computational Optical Imaging and Intelligent SensingSchool of Mathematics and Physics Science and EngineeringHebei University of EngineeringHebeiHandan 056038 Department of Materials Science and Engineering University of WashingtonSeattleWashington 98195

The electrochemical energy storage performance is greatly determined by the charge transfer and ion transportation occurring in the electrode ***,the enhancement of electric conductivity and ionic mobility is vital for high-performing and stable metal ion ***,we report the properties of oxygen vacancies(VO)and carbon co-doped TiO_(2) hollow spheres(HS-TiO_(2))and compared them with fully oxidized white TiO_(2) hollow spheres(W-TiO_(2)).Theoretical calculations and experimental results revealed that the introduction of carbon dopant and VO in anatase TiO_(2) reduced the bandgap and the existence of localized electrons,leading to a lower migration barrier of Li ions that promoted faster ion diffusion kinetics,enabling the HS-TiO_(2) with higher reversibility during the insertion and extraction of Li ions than the W-TiO_(2).This HS-TiO_(2) delivered superior lithium storage properties with a specific discharge capacity of 214.6 mAh g^(-1) for the 100th cycle at 200 mA g^(-1) and 116.3 mAh g^(-1) over 2000 cycles at a high rate of 2 A g^(-1).

关键词： titanium dioxide localized electrons uniform hollow structure oxygen vacancies lithium-ion batteries

部分预成核以制备单相基于FA0.92MA0.08PbI3的高效太阳电池（英文）

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Science China Materials 2019年第12期62卷 1846-1856页

作者：石鹏举丁勇刘成杨熠 Zulqarnain Arain 蔡墨朗任英科 Tasawar Hayat Ahmed Alsaedi 戴松元 State Key Laboratory of Alternate Electrical Power System with renewable Energy Sources North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of Novel Thin-Film Solar Cells Beijing Key Laboratory of Energy Safety and Clean UtilizationNorth China Electric Power UniversityBeijing 102206China Energy System Engineering Department Sukkur IB A UniversitySukkur 65200Pakistan NAAM Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

目前为止,对于高性能钙钛矿太阳能电池(PSCs)的开发已经进行了大量的研究,并取得了显著的成果.基于FAxMA1-xPbI3的混合阳离子钙钛矿具有广泛的吸光范围和显著的热稳定性,是获得高性能器件的理想材料.然而,很难通过前驱体来控制钙钛矿膜... 详细信息

目前为止,对于高性能钙钛矿太阳能电池(PSCs)的开发已经进行了大量的研究,并取得了显著的成果.基于FAxMA1-xPbI3的混合阳离子钙钛矿具有广泛的吸光范围和显著的热稳定性,是获得高性能器件的理想材料.然而,很难通过前驱体来控制钙钛矿膜中混合阳离子的比例.此外,高MA+含量的FAxMA1-xPbI3薄膜存在严重的相分离和大量的陷阱态,导致光伏性能较差.为了抑制相分离,本文提出了一种退火前部分成核的后处理方法,用混合的甲酰胺碘/甲铵碘(FAI/MAI)溶液处理制备的FAI-Pb I-2-DMSO中间相,最终得到的钙钛矿为FA0.92MA0.08PbI3.发现由于类似的分子结构引发了钙钛矿后处理薄膜中的离子交换,从而促进了部分成核,缺陷大大减少.因此,增加的光捕获和减少的缺陷态有助于提高开路电压和短路电流.用后处理方法制备的PSCs在大气条件下,最大PCE为20.80%, 80天后降解率为30%,具有可靠的重现性.

关键词：钙钛矿太阳能电池短路电流开路电压后处理方法大气条件溶液处理光伏性能甲酰胺

通过乙胺盐酸盐添加剂工程提升MAPbI3钙钛矿太阳电池的光电性能

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Science China Materials 2020年第12期63卷 2477-2486页

作者： Muhammad Mateen Zulqarnain Arain 刘雪朋 Atif Iqbal 任英科张先付刘成陈钦马爽丁勇蔡墨朗戴松元 Key Laboratory of Novel Thin-Film Solar Cells North China Electric Power UniversityBeijing 102206China State Key Laboratory of Alternate Electrical Power System with renewable Energy Sources North China Electric Power UniversityBeijing 102206China Energy Systems Engineering Department Sukkur IBA UniversitySukkur 65200Pakistan College of Science Hebei University of Science and TechnologyShijiazhuang 050018China

钙钛矿光吸收层的质量对太阳电池的光伏性能有重要的影响.目前,制备甲基铵基碘化铅钙钛矿(MAPbI3)的方法会产生大量缺陷态,特别是在晶界和薄膜表面,这些问题阻碍了钙钛矿太阳电池性能进一步提升.本文介绍了一种采用乙胺盐酸盐(EACl)添... 详细信息

钙钛矿光吸收层的质量对太阳电池的光伏性能有重要的影响.目前,制备甲基铵基碘化铅钙钛矿(MAPbI3)的方法会产生大量缺陷态,特别是在晶界和薄膜表面,这些问题阻碍了钙钛矿太阳电池性能进一步提升.本文介绍了一种采用乙胺盐酸盐(EACl)添加剂制备高质量MAPbI3的特殊方法,发现EACl可以使得钙钛矿晶体不通过中间相形成,并在退火后从钙钛矿中蒸发.此外,该方法还获得了梯度钙钛矿结构,显著提高了钙钛矿薄膜的性能.在最佳EACl用量下,器件的光电转换效率(PCE)达到20.03%.器件在室温老化1000 h后仍能保持原有PCE的89%.这一新方法可以简易制备高质量、缺陷少的钙钛矿薄膜,以生产更加稳定的器件.

关键词：钙钛矿太阳电池光电转换效率钙钛矿薄膜碘化铅光吸收层光电性能盐酸盐光伏性能

Metformin escape in prostate cancer by activating the PTGR1 transcriptional program through a novel super-enhancer

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Signal Transduction and Targeted Therapy 2023年第9期8卷 4365-4379页

作者： Jianheng Ye Shanghua Cai Yuanfa Feng Jinchuang Li Zhiduan Cai Yulin Deng ren Liu Xuejin Zhu Jianming Lu Yangjia Zhuo yingke Liang Jianjiang Xie Yanqiong Zhang Huichan He Zhaodong Han Zhenyu Jia Weide Zhong Department of Urology Guangzhou First People’s HospitalSouth China University of Technology510180 GuangzhouGuangdongChina Urology Key Laboratory of Guangdong Province The First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Medical University510230 GuangzhouGuangdongChina Guangzhou National Laboratory No.9 XingDaoHuanBei RoadGuangzhou International Bio Island510005 GuangzhouGuangdongChina Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences100700 BeijingChina Department of Botany and Plant Sciences University of CaliforniaRiversideCA 92507USA Graduate Program in Genetics Genomics&BioinformaticsUniversity of CaliforniaRiversideCA 92507USA State Key Laboratory of Quality Research in Chinese Medicine Macao University of Science and TechnologyTaipa999078 MacaoChina

The therapeutic efficacy of metformin in prostate cancer(PCa)appears uncertain based on various clinical *** treatment failure may be attributed to the high frequency of transcriptional dysregulation,which leads to drug ***,the underlying mechanism is still *** this study,we found evidences that metformin resistance in PCa cells may be linked to cell cycle ***-enhancers(SEs),crucial regulatory elements,have been shown to be associated with drug resistance in various *** analysis of SEs in metformin-resistant(MetR)PCa cells revealed a correlation with Prostaglandin Reductase 1(PTGR1)expression,which was identified as significantly increased in a cluster of cells with metformin resistance through single-cell transcriptome *** functional experiments showed that PTGR1 overexpression accelerated cell cycle progression by promoting progression from the G0/G1 to the S and G2/M phases,resulting in reduced sensitivity to ***,we identified key transcription factors that significantly increase PTGR1 expression,such as SRF and RUNX3,providing potential new targets to address metformin resistance in *** conclusion,our study sheds new light on the cellular mechanism underlying metformin resistance and the regulation of the SE-TFs-PTGR1 axis,offering potential avenues to enhance metformin’s therapeutic efficacy in PCa.

关键词： RUNX3 cancer offering