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Proton‑Prompted Ligand Exchange to Achieve High‑Efficiency CsPbI_(3) Quantum Dot Light‑Emitting Diodes

Nano-Micro Letters 2024年第6期16卷 53-62页

作者： Yanming Li Ming Deng Xuanyu Zhang Lei Qian Chaoyu Xiang Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315300People’s Republic of China Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211ZhejiangPeople’s Republic of China University of Nottingham Ningbo China Ningbo 315100People’s Republic of China

CsPbI_(3)perovskite quantum dots(QDs)are ideal materials for the next generation of red light-emitting ***,the low phase stability of CsPbI_(3)QDs and long-chain insulating capping ligands hinder the improvement of device *** in-situ ligand replacement and ligand exchange after synthesis were often difficult to ***,we proposed a new ligand exchange strategy using a proton-prompted insitu exchange of short 5-aminopentanoic acid ligands with long-chain oleic acid and oleylamine ligands to obtain stable small-size CsPbI_(3)*** exchange strategy maintained the size and morphology of CsPbI_(3)QDs and improved the optical properties and the conductivity of CsPbI_(3)QDs *** a result,high-efficiency red QD-based light-emitting diodes with an emission wavelength of 645 nm demonstrated a record maximum external quantum efficiency of 24.45%and an operational half-life of 10.79 h.

关键词： CsPbI_(3) perovskite quantum dots Light-emitting diodes Ligand exchange Proton-prompted in-situ exchange

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Stable all-solid-state Li-Te battery with Li_(3)TbBr_(6) superionic conductor

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Nano Research 2023年第7期16卷 9344-9351页

作者： Zhichao Zeng Xiaomeng Shi Mingzi Sun Hongtu Zhang Wei Luo Yunhui Huang Bolong Huang Yaping Du Chun-Hua Yan Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsHaihe Laboratory of Sustainable Chemical TransformationsSmart Sensing Interdisciplinary Science CenterSchool of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin 300350China Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077China Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth MaterialsChemistry and ApplicationsPKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China College of Chemistry and Chemical Engineering Lanzhou UniversityLanzhou 730000China

Rare-earth(RE)halide solid electrolytes(HSEs)have been an emerging research area due to their good electrochemical and mechanical properties for all-solid-state lithium batteries(ASSBs).However,only very limited types of HSEs have been reported with high *** this work,tens of grams of RE-HSE Li_(3)TbBr_(6)(LTbB)was synthesized by a vacuum evaporationassisted *** as-prepared LTbB displays a high ionic conductivity of 1.7 mS·cm^(-1),a wide electrochemical window,and good ***,the assembled solid lithium-tellurium(Li-Te)battery based on the LTbB HSE exhibits excellent cycling stability up to 600 cycles,which is superior to most previous *** processes and the chemicals during the discharge/charge of Li-Te batteries have been studied by various in situ and ex situ *** calculations have demonstrated the dominant conductivity contributions of the direct[octahedral]-[octahedral]([Oct]-[Oct])pathway for Li ion migrations in the *** Tb sites guarantee efficient electron transfer while the Li 2s orbitals are not affected during migration,leading to a low activation ***,this successful fabrication and application of LTbB have offered a highly competitive solution for solid electrolytes in ASSBs,indicating the great potential of RE-based HSEs in energy devices.

关键词： rare-earth halide solid electrolytes all-solid-state lithium batteries superionic conductor Li-Te solid battery

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Highly coordinated Pd overlayers on nanoporous gold for efficient formic acid electro-oxidation

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Nano Research 2021年第10期14卷 3502-3508页

作者： Qinqin Sang Shuai Yin Feng Liu Huiming Yin Jia He Yi Ding Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials&Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Kunming Institute of Precious Metals Kunming 650106China

Design and fabrication of highly efficient and stable electrocatalysts remain key challenges in green energy technologies such as low-temperature direct liquid fuel *** on in-depth theoretical calculations,here we demonstrate that surface Pd atoms with high coordination numbers(HCNs)can effectively modulate their adsorption energies for CO and OH,and thus achieve very high performance for formic acid electro-oxidation reaction(FAOR).Based on epitaxial coating Pd atomic layers onto nanoporous gold(NPG)thin membranes and a slight further decoration of Au clusters on top,the resulted core-shell structured NPG-Pd-Au electrocatalyst can demonstrate Pd intrinsic and mass activities of 8.62 mA·cm^(-2)and 27.25 A·mg^(-1)respectively at the peak potential around 0.33 V versus saturated calomel electrode toward FAOR,which are far better than those of commercial Pd/C catalysts(1.09 mA·cm^(-2)and 0.32 A·mg^(-1))tested under the same ***,the membrane electrode assemblies based on these low precious metal loading electrodes can achieve an anode Pd power efficiency over 10 W·mg^(-1)in a direct formic acid fuel cell,which is two orders of magnitude higher than that of the commercial Pd/*** results provide new inspirations for the development of revolutionary electrodes for energy technologies in a rational manner.

关键词： Pd nanoporous gold high coordination number formic acid oxidation direct formic acid fuel cell

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Surface-enhanced light harvesting over MOF-derived porous ZnO films for highly efficient QDs-based photoelectrochemical hydrogen generation

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Green Energy and Environment 2025年

作者： Tao, Yi Tang, Zikun Xie, Linjie Xu, Xiaolan Zhao, Wei Xu, Wenxuan Bao, Dequan Zhong, Yihong Gao, Zhenqiu Wen, Zhen Wang, Kanghong Zhang, Hao Sun, Xuhui Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Jiangsu Suzhou215123 China Department of Applied Mathematics School of Science Xi'an Jiaotong-Liverpool University Suzhou215123 China Suzhou Institute for Advanced Research University of Science and Technology of China Jiangsu Suzhou215123 China

Rational design of porous metal oxide films that serve as not only the scaffolds for light absorbers but also the transfer layer of photogenerated charges is essential for fabricating highly efficient photoanodes for photoelectrochemical (PEC) hydrogen generation. In this work, we report a facile one-step pyrolysis method which can convert Zn-based MOF to porous ZnO (m-ZnO) with rough surface and abundant oxygen vacancies (Ov). When incorporating core–shell quantum dots (QDs) as the light absorbers, the obtained photoanodes (m-ZnO@QDs) achieved outstanding PEC performance for hydrogen generation, exhibiting 1.6 times and 5.8 times higher saturated photocurrent density (Jsc) than those of conventional TiO2@QDs and ZnO@QDs photoanodes, respectively. Comprehensive optical and electrochemical measurements reveal that the rough surface of m-ZnO can significantly improve the light-harvesting capacity of corresponding photoanodes through surface-enhanced light scattering. Moreover, the Ov in m-ZnO facilitate the interfacial transfer of photogenerated electrons. Our findings indicate that the MOFs are valuable precursors for the preparation of porous films, offering a promising route to develop high-performance QDs-based PEC devices. © 2024 Institute of Process Engineering, Chinese Academy of sciences

关键词： Titanium dioxide

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A nanoenzyme-modified hydrogel targets macrophage reprogramming-angiogenesis crosstalk to boost diabetic wound repair

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Bioactive Materials 2024年第5期35卷 17-30页

作者： Shan He Zhenhao Li Lu Wang Nannan Yao Huangding Wen Huageng Yuan Jiatao Zhang Zhiqing Li Chuanan Shen Department of Burns and Plastic Surgery Fourth Medical Center of PLA General HospitalNo.51Fucheng RoadHaidian DistrictBeijing100048China Department of Burns Nanfang HospitalSouthern Medical UniversityGuangzhou510515China Department of General Surgery Nanfang HospitalThe First School of Clinical MedicineSouthern Medical UniversityGuangzhou510515China Department of Neurology Cangzhou Central HospitalCangzhou061000China Jiatao Zhang Key Laboratory of Medical Molecule Science and Pharmaceutical EngineeringMinistry of Industry and Information TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing100081China

Diabetic wounds has a gradually increasing incidence and *** inflammation due to immune imbalance leads to delayed wound ***,we reveal the interconnection between activation of the NLRP3 inflammatory pathway in endotheliocyte and polarization of macrophages via the cGAS-STING pathway in the oxidative *** enhance the immune-regulation based on repairing mitochondrial oxidative damage,a zeolitic imidazolate framework-8 coated with cerium dioxide that carries Rhoassociated protein kinase inhibition Y-27632(CeO_(2)-Y@ZIF-8)is *** is encapsulated in a photocross-linkable hydrogel(GelMA)with cationic quaternary ammonium salt groups modified to endow the antibacterial properties(CeO_(2)-Y@ZIF-8@Gel).CeO_(2)with superoxide dismutase and catalase activities can remove excess reactive oxygen species to limit mitochondrial damage and Y-27632 can repair damaged mitochondrial DNA,thus improving the proliferation of *** endotheliocyte uptakes CeO_(2)-Y@ZIF-8 NPs to degrade peroxides into water and oxygen in cells and mitochondria,NLRP3 inflammatory pathway is inhibited and the leakage of oxidatively damaged mitochondrial DNA(Ox-mtDNA,a damage-associated molecular pattern)through mPTP ***,as the cGAS-STING pathway activated by Ox-mtDNA down-regulated,the M_(2)phenotype polarization and anti-inflammatory factors ***,CeO_(2)-Y@ZIF-8@Gel,through remodulating the crosstalk between macrophage reprogramming and angiogenesis to alleviate inflammation in the microenvironment and accelerates wound healing.

关键词： Diabetic wound Nanoenzyme Macrophages polarization NLRP3 Hydrogel

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Anionic MOF derived Bimetallic Ni_(x)Co_(y)@Nano-porous carbon composites toward strong and efficient electromagnetic wave absorption

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Journal of Materiomics 2022年第4期8卷 852-862页

作者： Fan Zhang Yefu Chen Yujie Ren Qi Zheng Lianjun Wang Wan Jiang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China Engineering Research Center of Advanced Glasses Manufacturing Technology Ministry of EducationDonghua UniversityShanghai201620China Institute of Functional Materials Donghua UniversityShanghai201620China

Metal-organic frameworks (MOFs) derived metallic nanoparticles embedded nano-porous carbon (NPC)composites have shown to be promising microwave absorbing materials. Although MOF precursors withdiverse compositions and morphologies have been extensively investigated, anionic MOFs are rarelyexplored for this utility. In addition to the metal sites and ligands on the MOF framework, the guestcounter-cations in the void provide supplementary parameters to tune the capability of microwaveabsorption. Herein, we applied an anionic NixCoy-MOF featuring N-rich ligands and hierarchical porousstructures as a precursor for microwave absorption. The obtained dielectric-magnetic Ni_(x)Co_(y)@NPCcomposites with rich N dopants and multiple hetero-interfaces promote the microwave attenuationcapability through enhanced dipole/interfacial relaxation. The synergistic effects of magnetic loss andconduction loss induced by metallic nanoparticles (NPs) and porous graphitic layers further facilitate themicrowave dissipation. More significantly, impedance matching can be effectively improved by tuningthe Co/Ni amount in the precursors to realize the modulation of electromagnetic parameters. Conse-quently, Ni@NPC exhibits the optimal electromagnetic wave (EMW) absorption with minimum reflectionloss of 66 dB at only 2 mm and broad effective absorption band covering 4.56 GHz at a thin thickness of2.07 mm, making this material promising absorber for EMW elimination.

关键词： Anionic MOFs MOF-Derived carbon composites N-rich ligands Dielectric loss Magnetic loss Electromagnetic wave absorption

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Transition metal-based cathode catalysts for Li-CO_(2)batteries

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Journal of Energy Chemistry 2025年第5期104卷 225-253页

作者： Wenqing Ma Mingjuan Gao Jianping Ma Siyu Liu Lishan Yang Yahui Yang Xiangping Chen Tianzhen Jian Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongSchool of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022ShandongChina Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education of China) National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of ResourcesKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceKey Laboratory of Light Energy Conversion Materials of Hunan Province CollegeHunan Normal UniversityChangsha 410081HunanChina Nano-Science Center&Department of Chemistry University of CopenhagenCopenhagen 2100Denmark Jinan Preschool Education College Jinan 250307ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Shandong Sacred Sun Power Sources Co.Ltd. Qufu 273100ShandongChina

The Li-CO_(2)battery has been highly rated as an intriguing technique for balancing the carbon cycle for years,but it is still significantly challenged by the obstacles such as limited reversibility,sluggish kinetics,and poor energy ***,the design and development of advance catalysts that can enhance the kinetics and reversibility of the CO_(2)electrochemical cycling reactions are considered the imperative *** metal-based catalysts are widely considered appealing owing to their unfilled dorbitals,rich and adjustable valences,as well as *** this review,the working mechanism and the key issues of the CO_(2)electrochemical cycling reaction are discussed *** the strategies for composition and structure design of different type of transition metal-based catalysts are highlighted,including their benefits,limitations,and the ways to implement these ***,based on the pioneering research,the perspectives on the challenges and key points for the future development of cathode catalyst are proposed.

关键词： Li-CO_(2)battery Transition metal Cathode catalyst Catalytic mechanism

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Memristor-Based Input Delay Reservoir Computing System for Temporal Signal Prediction

SSRN

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SSRN 2024年

作者： Wang, Sui-Dong Lu, Zhen-Ni Ye, Jing-Ting Zhang, Zhong-Da Cai, Jia-Wei Pan, Xiang-Yu Xu, Jian-Long Gao, Xu Zhong, Ya-Nan Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Jiangsu Suzhou215123 China MUST-SUDA Joint Research Center for Advanced Functional Materials Macau University of Science and Technology Taipa999078 China

Reservoir computing (RC) system, featured by its recursive structure, has been utilized for temporal signal processing, offering both low power consumption and high computational speed. This work reports on a novel input delay reservoir computing (ID-RC) system based on the oxide memristors, which can be applied to temporal signal prediction. The particle swarm optimization (PSO) algorithm is employed in the ID-RC system to obtain optimal hyperparameters for multi-step prediction in the Mackey-Glass task, with a normalized root-mean-square error (NRMSE) of only 0.09 at the 20th step. Significantly, by employing the ID-RC system in temporal signal prediction of the Hénon map and the nonlinear autoregressive moving average (NARMA10), small NRMSEs of 0.047 and 0.017 were achieved, respectively. The memristor-based ID-RC system turns out to be highly promising in forecasting of chaotic time series. © 2024, The Authors. All rights reserved.

关键词： Mean square error

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Cu(OAc)_(2)-Mediated Synthesis of Fullerodihydropyridine-3-ones via the Reaction ofFullerene with β-Substituted Ethylamines in the Absence or Presence of Arylacetaldehydes

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Chinese Journal of Chemistry 2023年第13期41卷 1557-1565页

作者： Xiu-Shan Liu Hui-Juan Wang Fei-Lun Wu Jing-Wen Huo Xing-Yu Wang Fa-Bao Li Rui Sun Li Liu Chao-Yang Liu State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhanHubei430062 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Center for Magnetic ResonanceWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhanHubei430071 China Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei UniversityWuhanHubei430062 China

A series of unreported fullerodihydropyridine-3-ones were synthesized as a new family of fullerene derivatives in moderate to good yields by a simple one-step reaction of[60]fullerene with cheap and readily available β-substituted ethylamines in the absence or presence of arylacetaldehydes under the assistance of Cu(OAc)_(2).The in situ generation of arylacetaldehydes by the C—N bond cleavage of arylethylamines avoided their complex synthesis in advance and realized the preparation of fullerodihydropyridine-3-ones with structural and functional diversities,which may have promising applications in perovskite solar cells to improve the performance of photovoltaic devices due to the existence of a largeπ-conjugated system on the dihydropyridine-3-one ring.

关键词： Fullerenes Copper β-Substituted ethylamines Arylacetaldehydes Fullerodihyd ropyridine-3-ones Radical reactions

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Cationic potential:An effective descriptor for rational design of layered oxides for sodium-ion batteries

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Green Energy & Environment 2021年第4期6卷 455-457页

作者： Xudong Zhao Li-Zhen Fan Zhen Zhou Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Advanced Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing100083China Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou450001China

Sodium-ion batteries are very promising in large-scale energy *** exploration of Na layered oxides as cathode materials for Na ion batteries usually consumes much resource,while the performances of Na layered oxides are dominated by their crystal ***,it is highly desired to predict the stacking mode of the target oxides in advance:whether O3-type with higher ordered structure and stability,or P2-type with more Na *** this purpose density functional theory computations do not *** recently,Hu's group and international collaborators have proposed a cationic potential to provide a very timely,effective,and accurate criterion to predict the stacking mode of Na layered oxides(science,370(2020)708-711).Under the guidance of the cationic potential phase map,Na layered oxides could be rationally *** we would like to highlight the progress that novel Na layered oxides could be obtained with the combination of large specific capacity,high power density and good cycling stability.

关键词： Na ion batteries Layered oxides Materials design

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