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Dual-site parallel binding ligands for enhanced perovskite solar cell efficiency

Journal of Energy Chemistry 2025年第06期 112-120页

作者： Zhiqian Yang Yingke Ren Li'e Mo Mengting Han Aiqing Sun Zhaoqian Li Hong Zhang Yong Ding Yang Huang Linhua Hu Key Laboratory of Photovoltaic and Energy Conservation Materials CAS Institute of Solid State Physics Hefei Institutes of Physical Science Chinese Academy of Sciences University of Science and Technology of China College of Science Hebei University of Science and Technology Hebei Computational Optical Imaging and Photoelectric Detection Technology Innovation Center Hebei International Joint Research Center for Computational Optical Imaging and Intelligent Sensing School of Mathematics and Physics Science and Engineering Hebei University of Engineering State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Anhui Institute of Innovation for Industrial Technology

Perovskite solar cells（PSCs） are promising in the field of photovoltaics but are hindered by surface defects and ***,the energetic losses occurring at the interfaces between the perovskite and the charge transport layers often lead to reduced power conversion efficiency（PCE）.Surface treatment is an effective strategy but the passivating ligands usually bind with a single active *** resulted dense packing of resistive passivators perpendicular to the surface is detrimental to charge ***,we present a passivator that can bind to two neighboring lead（Ⅱ） ion(Pb2+) defect sites simultaneously with an aligned parallel mode to the perovskite surface,effectively suppressing the surface trap density and preventing the *** target device fulfills a PCE of 25.1% and maintains over 85% of the initial efficiency after 800 h of exposure to a relative humidity（RH） of 65% ± 5%.

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Highly stable N-containing polymer-based Fe/Nx/C electrocatalyst for alkaline anion exchange membrane fuel cell applications

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Progress in Natural science:materials International 2022年第1期32卷 27-33页

作者： Muhammad Rauf Jingwen Wang Stephan Handschuh-Wang Zhiyou Zhou Waheed Iqbal Sayed Ali Khan Lin Zhuang Xiangzhong Ren Yongliang Li Shigang Sun College of Chemistry and Environmental Engineering Shenzhen University State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical Engineering Xiamen University Environmental Science and Engineering Research Center Harbin Institute of Technology (Shenzhen) School of Electronic Science and Engineering Xiamen University College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan University

A cost-effective electrocatalyst with high activity and stability was developed. The Fe-Nx and pyridinic-N active sites were embedded in nitrogen-doped mesoporous carbon nanomaterial by carbonization at high *** electrocatalyst exhibited excellent electrochemical performance for the oxygen reduction reaction, with high onset potential and half-wave potential values(Eonset= 1.10 V and E1/2= 0.944 V) than 20 wt % Pt/C catalyst（1.04 and 0.910 V）. The mass activity of the Schiff base network（SNW） based SNW-Fe/N/C@800°electrocatalyst（0.64 m A mg-1@ 1 V） reached about half of the commercial Pt/C electrocatalyst(1.35 m A mg-1@ 1 V). The electrocatalyst followed the 4-electron transfer mechanism due to very low hydrogen peroxide yield（H2O2<1.5%） was obtained. In addition, this electrocatalyst with dual active sites showed high stability during cyclic voltammetry and chronoamperometry measurements. More importantly, the electrocatalyst also demonstrated the power density of 266 m W cm-2in the alkaline anions exchange membrane fuel cell（AEMFC） test, indicating its prospective application for fuel cells.

关键词： Fe N x C electrocatalyst Oxygen reduction reaction Active cites Durability Alkaline anions exchange membrane fuel cell

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High-brightness and high-efficiency diode laser module based on a coherent-spectral beam combining external cavity

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Chinese Optics Letters 2024年第12期22卷 70-73页

作者： Lingqian Meng Weiqiao Zhang Jing Liu Peng Cao Yufei Wang Xuyan Zhou Wanhua Zheng Laboratory of Solid State Optoelectronics Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Weifang Academy of Advanced Opto-Electronic Circuits Weifang 261071China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Future Technology University of Chinese Academy of SciencesBeijing 101408China

A hybrid cavity structure based on individual laser diode integrating coherent beam combining(CBC)and spectral beam combining(SBC)is *** CBC structure is used to enhance laser output power while optimizing beam quality,and the SBC structure is employed to further increase laser output *** output power of 1.42 W was obtained at 0.55 A,with a high combining efficiency of 87.2%.Additionally,the brightness of this structure is 58.65 MW·cm^(-2)·sr^(-1),which is 3.66times that of a single laser *** entire structure provides a new approach for increasing the output power and optimizing the beam quality of the laser diode.

关键词： high brightness coherent beam combining spectral beam combining

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Sodium metals for single emitter strong coupling:Alternative plasmonic candidates beyond noble metals

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science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 106-117页

作者： Yi Zhang Shuying Chen Yuning Han Xiulai Xu Lin Zhou National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210008China School of Information and Electronic Engineering(Sussex Artificial Intelligence Institute) Zhejiang Gongshang UniversityHangzhou 310018China Department of Physics&Astronomy University College LondonLondon WC1E 6BTUK State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

This work provides a theoretical investigation into the strong coupling between a single quantum emitter(QE)and the surface plasmons of sodium metals in two representative plasmonic systems,i.e.,the semi-infinite metal-dielectric interface and the metal nanoparticles(NPs)of monomer/dimer *** both configurations,sodium metals exhibit distinctly stronger coupling strength and lower optical loss in the optical region than their noble metal counterparts,demonstrating the ideal candidate characteristics for single-molecule-level strong couplings with distinctly facile operation *** results provide new insights into extreme light-matter interactions with potential applications in quantum information,optical sensors,quantum chemistry,etc.

关键词： sodium metals plasmonics single quantum emitter strong coupling pseudomode

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Hydrophobic MAO/FSG coating based TENG for self-healable energy harvesting and self-powered cathodic protection

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science China(Technological sciences) 2022年第3期65卷 726-734页

作者： LIU YuPeng SUN WeiXiang LI TingHua WANG DaoAi State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Technical Center of China Tobacco Yunnan Industrial Co. Ltd.Kunming 650231China

An organic/inorganic hybrid coating with self-healable hydrophobicity is prepared as triboelectrical layer by micro-arc oxidation(MAO)and fluorinated sol-gel(FSG)*** MAO/FSG hybrid coating-based TENG(MF-TENG)has a current output of31μA and voltage output of 870 V,which is eight times that of the MAO based *** with organic coating,the organic/inorganic hybrid coating has good wear *** the fluorine composition on the surface of the coating is damaged,the self-healing hydrophobicity and electrical output are achieved by transferring loaded perfluorosilane to the damaged *** fluorinated sol-gel coating is hydrophobic,which ensures that the coating has good corrosion ***,the electricity generated in triboelectrification could improve the anti-corrosion performance by cathodic *** on the anti-corrosion,anti-wear and self-healing properties,the MF-TENG has potential applicability in the field of energy collection,energy supply,and corrosion protection.

关键词： triboelectric nanogenerator organic/inorganic hybrid coating energy collection corrosion resistance self-healing property

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Machine learning-accelerated discovery of novel 2D ferromagnetic materials with strong magnetization

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Chip 2023年第4期2卷 78-88页

作者： Chao Xin Yaohui Yin Bingqian Song Zhen Fan Yongli Song Feng Pan School of Science Changchun University of Science and TechnologyJilin Key Laboratory of Solid-State Laser Technology and ApplicationChangchun 130022China School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China Center forLattice Defectronics&Department of Physics KAISTDaejeon 34141Republic of Korea School of Energy and Power Engineering JiangSuUniversityZhenjiang 212013China

Two-dimensional ferromagnetic(2DFM)semiconductors(metals,half-metals,and so on)are important materials fornext-generation nano-electronic and nano-spintronic ***,these kinds of materials remain scarce,“trial anderror”experiments and calculations are both time-consumingand *** the present work,in order to obtain theoptimal 2DFM materials with strong magnetization,a machinelearning(ML)framework was established to search the 2Dmaterial space containing over 2417 samples and identified 615compounds whose magnetic orders were then determined viahigh-throughput first-principles *** the adoptionof ML algorithms,two classification models and a regressionmodel were *** interpretability of the regressionmodel was evaluated through Shapley Additive exPlanations(SHAP)***,it is found that Cr2NF2 is apotential antiferromagnetic ferroelectric 2D multiferroic *** importantly,60 novel 2DFM candidates werepredicted,and among them,13 candidates have magnetic moments of>7μ***2Cl8,Fe3GeSe2,and Mn4N3S2 were predictedto be novel 2DFM semiconductors,metals,and half-metals,*** the adoption of the ML approach in thecurrent work,the prediction of 2DFM materials with strongmagnetization can be accelerated,and the computation timecan be drastically reduced by more than one order ofmagnitude.

关键词： 2D ferromagnetic Machine learning High through-putscreening DFT Model interpretability

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Colossal Negative Thermal Expansion via Polar-Nonpolar Transition in Metal-Organic Frameworks

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CCS Chemistry 2025年第2期7卷 564-572页

作者： Liang Chen Rui Ma Qiang Li Xin Chen Yili Cao Chengyi Yu Jinxia Deng Chun-Yu Liu Kenichi Kato Kun Lin Xianran Xing Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Solid State ChemistryUniversity of Science and Technology BeijingBeijing 100083 Key Laboratory of Eco-Textiles Ministry of EducationJiangnan UniversityWuxi 214122 Jiangsu RIKEN SPring-8 Center Sayo-gunHyogo 679-5148

Molecular-based polar structures are among most intriguing candidates for the generation of mechani-cal functions such as the *** struc-tures undergo a symmetry switching upon heating and generally yield anisotropic lattice ***-umetric negative thermal expansion(NTE)remains challenging to observe,most of which exhibits rela-tively small magnitudes as ***,we realize colossal volumetric NTE in metal-organic frame-works(MOFs)via novel polar-nonpolar structure ***,a colossal volumetric NTE(α_(v)=−302.45×10^(−6)K^(−1))was achieved from 320-380 K in CAU-10-CH_(3)due to polar-nonpolar transi-tion(space group from I41md to I41/amd),much larger than most NTE ***-temperature crystallographic analysis reveals that the aluminum-oxygen octahedra turns from low-symmetry to high symmetry upon heating and thus causes a“spring”compression of the octahedral helical chain,thus leading to colossal ***-group modifica-tions further identify the excellent tunability of such *** strongest uniaxial NTE,to date,was simultaneously found in CAU-10-H along the c direction(α_(c)=−577.22×10^(−6)K^(−1)),whereas the CAU-10-NH_(2)contributes to a sluggish phase *** work provides the first example of tailoring a colossal NTE via polar-nonpolar transition in frame-works.

关键词： colossal negative thermal expansion metal-organic frameworks polar structure phase transition aluminum-oxygen octahedra

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Flexible silver nanorods/carbon fiber felt metacomposites with epsilon-near-zero property adjusted by compressive deformation

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Rare Metals 2023年第10期42卷 3318-3325页

作者： Jia-Hong Tian Run-Hua Fan Peng-Tao Yang Hai-Kun Wu Shan Jiang Yun-Lei Zhou Andrey Karlovich Sarychev College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai201306China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan250012China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China State Key Laboratory of Digital Manufacturing Equipment and Technology Flexible Electronics Research CenterHuazhong University of Science and TechnologyWuhan430074China Institute for Theoretical and Applied Electrodynamics Russian Academy of ScienceMoscow125412Russia

Epsilon-near-zero(ENZ) materials exhibit great potentials in the practical applications of sensors,electronic skin,and wearable devices,when they own the properties of flexibility and *** this work,the silver nanorods(AgNRs)/carbon fiber felt(CFF) composites with ENZ property from 1 kHz to 1 MHz were achieved by adjusting the content of AgNRs and the compressed elastic deformation.

关键词： composites nanorods silver

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A top–down strategy to realize the synthesis of small-sized L10 - platinum-based intermetallic compounds for selective hydrogenation

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Nano Research 2022年第10期15卷 9631-9638页

作者： Yu Jin Guomian Ren Yonggang Feng Shize Geng Ling Li Xing Zhu Jun Guo Qi Shao Yong Xu Xiaoqing Huang Jianmei Lu College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices Collaborative Innovation Center of Advanced Energy MaterialsSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Testing&Analysis Center Soochow UniversitySuzhou 215123China

The synthesis of Pt-based nanoparticles(NPs)with ultrasmall feature and tailored structure is of great importance for catalysis yet *** this work,we demonstrate a facile top–down strategy for the fabrication of small-sized Pt-based intermetallic compounds(IMCs)with L10 structure through the evaporation of Cd under high ***,such thermal treatment can be used as a versatile strategy for creating binary,ternary,quaternary,quinary,and senary L10-Pt-based ***,the small-sized Pt-based IMCs display high stability against high temperature of 700℃,which can serve as active and selective catalyst for the selective hydrogenation of *** work may not only provide a versatile top–down strategy for fabricating highly stable small-sized Pt-based NPs with L10 structure,but also promote their extensive applications in catalysis and beyond.

关键词： top-down strategy Pt-based intermetallic compound small-sized selective hydrogenation

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Synergically enhanced piezocatalysis performance of eco-friendly(K_(0.52)Na_(0.48))NbO_(3) through ferroelectric polarization and defects

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International Journal of Minerals,Metallurgy and materials 2023年第10期30卷 2044-2054页

作者： Min Zhou Laijun Liang Dingze Lu Xiaomei Lu Zheng Wang Fengzhen Huang Pengfei Cheng Dongdong Liu Mengqi Tian Qiuping Wang Yunjie Zhang School of Science Xi’an Polytechnic UniversityXi’an 710048China National Laboratory of Solid State Microstructures and Physics School Nanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710126China National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China

Piezocatalysis has attracted unprecedented research interest as a newly emerging catalysis ***,the inherent insulating property of ferroelectric materials ultimately leads to the poor vibration-electricity conversion ***,this work reports the(K_(0.52)Na_(0.48))NbO_(3) ferroelectric ceramics(KNNFCx),for which the FeCo modification strategy is *** substitution of the moderate amount of FeCo(x=0.015)at Nb site not only optimizes ferroelectricity but also produces beneficial defects,notably increasing Rhodamine B water purification efficiency to 95%.The pinning effect of monovalent oxygen vacancies on ferroelectric domains is responsible for the excellent ferroelectric polarization of KNNFC0.015 through the generation of an internal field to promote charge carriers separation and reduce nonradiative ***,the accompanying electron carriers can easily move to the material surface and participate in redox reactions because they have low activation ***,ferroelectric polarization and defects play synergetic roles in enhancing piezocatalytic performance.

关键词： piezocatalytic water purification ferroelectric polarization beneficial defects

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