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Ca_(2)Nb_(2)O_(7)as a Novel Open-framework Anode Material for Potassium-ion Batteries

Chinese Journal of Structural Chemistry 2021年第2期40卷 233-238,147页

作者： YANG Xin WANG Zheng-Dong FU Yu-Ru LIU Qin XIAO Gao CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing100039China Department of Environmental Science and Engineering College of Environment and ResourcesFuzhou UniversityFuzhou 350108China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350116China

Potassium-ion batteries(KIBs)are a promising alternative to Lithium-based energy storage systems owning to the low cost and rich abundance of potassium resources,but are facing challenges in designing low-cost hosts that can reversibly accommodate large-size K^(+)with fast diffusion ***,we report a novel 3D inorganic open framework of Ca_(2)Nb_(2)O_(7)(CNO)as an anode for *** open framework structure affords interstitial vacancies available for storing K^(+)and allows a facile diffusion of K^(+),thus resulting in excellent structural stability and fast reaction *** CNO electrode delivers a reversible specific capacity of 65.3 and 52.2 mAh/g at 5 and 10 mA/g,***,CNO exhibits excellent long-term cyclability with 92.53%capacity retention over 700 cycles at 10 mA/*** will trigger more investigations into open-framework-based materials for stable and fast KIBs.

关键词： potassium-ion batteries inorganic-open-framework long lifespan kinetics

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In-Situ Texturing Hollow Carbon Host Anchored with Fe Single Atoms Accelerating Solid-Phase Redox for Li-Se Batteries

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SSRN 2024年

作者： Xia, Qi Zou, Yan Yan, Ke Bao, Liangxue Chen, Huixin Yue, Hongjun CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research The Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Fujian Xiamen361021 China College of Chemistry Fuzhou University Fujian Fuzhou350108 China

Se-based cathodes have caught tremendous attention owing to their comparable volumetric capacity and better electronic conductivity to S cathodes. However, its low utilization ratio and sluggish redox kinetics due to the high reaction barrier of solid-phase transformation from Se to Li2Se limit its practical application. Herein, an in-situ texturing hollow carbon host by gas-solid interface reaction anchored with Fe single-atomic catalyst (HCS-Fe) is designed and prepared for advanced Li-Se batteries. The HCS-Fe host presents high pore volume of 1.49 cm3 g−1, Fe single atom content of 1.53 wt.%, and its specific structure protects single-atomic catalyst from the destructive reaction environment, thus balancing catalytic activity and durability. After Se loading by reduction of H2SeO3, the homogenous HCS-Fe/Se cathode delivers a superior rate capacity of 431.3 mA h g−1 at 4 C, and great discharge capacity of 301.8 mA h g−1 after 1000 cycles at 10 C, with high Li-ion diffusion coefficient and capacitance-contributed ratio. The DRT analysis verifies solid-phase transformation mechanism of HCS-Fe/Se cathode and DFT calculations confirm the adsorption and bidirectionally catalysis effect of Fe single-atomic catalyst. This work provides a new strategy to prepare high-efficient Se cathode associated with non-noble metal single atoms for high-performance Li-Se batteries. © 2024, The Authors. All rights reserved.

关键词： Cathodes

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Polarized upconversion luminescence from a single LiLuF_(4):Yb^(3+)/Er^(3+) microcrystal for orientation tracking

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Science China Materials 2022年第1期65卷 220-228页

作者： Shouquan Wei Xiaoying Shang Ping Huang Wei Zheng En Ma Jin Xu Meiran Zhang Datao Tu Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsState Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry Fuzhou UniversityFuzhou 350116China Xiamen Institute of Rare-Earth Materials Haixi InstitutesChinese Academy of SciencesXiamen 361021China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

Polarized upconversion luminescence(UCL)of lanthanide-doped micro/nano-crystals has shown great promise in single-particle tracking and super-resolution ***,because of the spectral line broadening and multiple sites of lanthanide in upconversion particles(UCPs),the crystal-field(CF)polarization components of UCL are usually ***,we report the linearly polarized UCL in LiLuF_(4):Yb^(3+)/Er^(3+) single microcrystals with resolvable CF transition lines and a polarization degree up to *** CF levels and CF transition lines of Er^(3+),as well as their emission polarization anisotropy,are unraveled for the first time through low-temperature and high-resolution photoluminescence(PL)and UCL *** taking advantage of the well-resolved and highly-polarized CF transition lines of Er^(3+),we demonstrate the application of LiLuF_(4):Yb^(3+)/Er^(3+) single microcrystals as anisotropic UCL probes for orientation *** findings provide fundamental insights into the polarization anisotropy of UCL in lanthanide-doped single particles,thus laying a foundation for the future design of anisotropic luminescent probes towards versatile applications.

关键词： LiLuF_(4) upconversion luminescence single particle polarization anisotropy crystal-field level

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A Perimidin Derivative with Multiple Redox Centers as an Anode for Lithium-ion Batteries

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Chinese Journal of Structural Chemistry 2020年第2期39卷 263-268,185页

作者： FU Yu-Ru LIU Qin SUN Chuan-Fu CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100039China

Organic molecules are attractive electrode materials for rechargeable batteries owing to their sustainability, low cost, and light weight. In this work, we report a new organic anode, a perimidin derivative 1,3,5-tri(1 H-perimidin-2-yl)-benzene(TPB), for lithium-ion batteries. The TPB structure contains multiple redox centers including π-conjugated benzene ring, C=N, and-NH groups and delivers a high reversible specific capacity of 300 mAh/g at 50 mA/g under a six-electron redox reaction. Moreover, TPB exhibits excellent rate capability and long-term cyclability with 98.1% capacity retention over 1500 cycles at 1000 mA/g. The results may open new opportunities for the development of low-cost and long-lifespan lithium-ion batteries.

关键词： lithium-ion batteries organic electrode multiple redox centers long lifespan

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2D graphene oxide-L-arginine-soybean lecithin nanogenerator for synergistic photothermal and NO gas therapy

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Chinese Chemical Letters 2023年第3期34卷 402-408页

作者： Haina Tian Jinyan Lin Fukai Zhu Jiaqi Li Suhua Jiang Liya Xie Yang Li Peiyuan Wang Zhenqing Hou Jinxiao Mi Department of Biomaterials College of MaterialsResearch Center of Biomedical Engineering of Xiamen&Key Laboratory of Biomedical Engineering of Fujian ProvinceXiamen UniversityXiamen 361005China Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhou 350025China Collaborative Innovation Center of Mushroom Health Industry Minnan Normal UniversityZhangzhou 363000China School of Rare earths University of Science and Technology of ChinHefei 230026China The First Affiliated Hospital of Xiamen University Xiamen 361003China Department of Materials Science and Engineering Fujian Provincial Key Laboratory of Advanced Materials(Xiamen University)College of MaterialsXiamen UniversityXiamen 361005China

Nitric oxide(NO) gas therapy has been regarded as a promising strategy for cancer treatment. However,its therapeutic efficiency is still unsatisfying due to the limitations of monotherapy. Previous preclinical and clinical studies have shown that combination therapy could significantly enhance therapeutic efficiency. Herein, a graphene oxide(GO)-L-arginine(L-Arg, a natural NO donor) hybrid nanogenerator is developed followed by surface functionalization of soybean lecithin(SL) for synergistic enhancement of cancer treatment through photothermal and gas therapy. The resultant GO-Arg-SL nanogenerator not only exhibited good biocompatibility and excellent endocytosis ability, but also exhibited excellent photothermal conversion capability and high sensitivity to release NO within tumor microenvironment via inducible NO synthase(i NOS) catalyzation. Moreover, the produced hyperthermia and intracellular NO could synergistically kill cancer cells both in vitro and in vivo. More importantly, this nanogenerator can efficiently eliminate tumor while inhibiting the tumor recurrence because of the immunogenic cell death(ICD) elicited by NIR laser-triggered hyperthermia and the immune response activation by massive NO generation. We envision that the GO-Arg-SL nanogenerator could provide a potential strategy for synergistic photothermal and gas therapy.

关键词： NO gas therapy Photothermal therapy L-Arg Immune activation Reduce recurrence

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Multifunctional, Superelastic, and Environmentally Stable Sodium Alginate/Mxene/Polydimethylsiloxane Aerogels for Piezoresistive Sensor

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SSRN 2023年

作者： Han, Songjiu Wu, Qirui Zhu, Jundong Chen, Anbang Zhang, Jiayu Chen, Yujia Yang, Xiaoxiang Huang, Jianren Guan, Lunhui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350108 China School of Mechanical Engineering and Automation Fuzhou University Fuzhou350108 China School of Chemistry Fuzhou University Fuzhou350108 China

Aerogel sensors have drawn considerable interest in the recent research world. However, simultaneously maintaining superelasticity and an outstanding piezoresistive effect under changing environmental conditions remains challenging. Here, sodium alginate (SA) was used as a bonding agent for MXene nanosheets and polydimethylsiloxane (PDMS) as a reinforcing agent to prepare SA/MXene/PDMS (SMP) composite aerogel with excellent high conductivity, mechanical elasticity, reliable thermal insulation, and good hydrophobicity. The interaction between MXene nanosheets and SA enhances the 3D network framework of the aerogel. The aerogel with a layer-support network structure prepared by the modified directional freezing method showed light weight, high sensitivity (37.43 kPa-1), significant reversible compression (70%) and excellent fatigue resistance (60,000 cycles). The piezoresistive sensor based on SMP composite aerogel can quickly respond to pressure/strain signals, which can be further used for pulse beating, sound detection, motion monitoring, foot posture diagnosis and human health monitoring. Additionally, the MXene aerogel sensor based on carbon material with frequency response characteristics can detect low to high frequency vibration signals, has frequency response characteristics that can detect low to high-frequency vibration signals, making it useful for rotating machinery speed detection, cantilever beam vibration detection, non-destructive testing of cantilever beams, and other engineering applications. With its the layered porous structure and the assistance of PDMS, the aerogel also exhibits larger water contact angles (120o) and extreme environmental suitability (-40 to 80 oC), performing a wide range of application potential in many fields. © 2023, The Authors. All rights reserved.

关键词： Polydimethylsiloxane

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D^(6h)Symmetric Radical Donor-Acceptor Nanographene Modulated Interfacial Carrier Transfer for High-Performance Perovskite Solar Cells

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CCS Chemistry 2023年第9期5卷 2159-2170页

作者： Can Wang Yifeng Gao Zhen-Lin Qiu Ping-Ping Sun Naoyuki Shibayama Zilong Zhang Qiu Xiong Fangbin Ren Shui-Yang Lien Lusheng Liang Jiaoxia Zhang Yuan-Zhi Tan Peng Gao CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Laboratory for Advanced Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021 University of Chinese Academy of Sciences Beijing 100049 School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003 Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory for Physical Chemistry of Solid SurfacesEngineering Research Center for Nano-Preparation Technology of Fujian ProvinceDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005 Department of Chemistry School of ScienceHainan UniversityHaikou 570228 Faculty of Biomedical Engineering Graduate School of EngineeringToin University of YokohamaYokohamaKanagawa 225-8503 Xiamen University of Technology Xiamen 361024

Imbalanced charge-carrier extraction remains an issue aggravating interfacial charge accumulation and *** hopping transport channels could accelerate the extraction of ***,we demonstrated an effective“bridging interface”strategy between the perovskite/2,2′,7,7′-tetrakis(N,N-di-pmethoxyphenylamine)-9,9′-spirobifluorene(spiro-OMeTAD)that modulates interfacial charge transfer and improves hole mobility using radical-containing donor-acceptor nanographenes(D-A NGs)possessing electron-deficient perchlorinated NGs and electron-rich aniline *** fully delocalized backbone of nanographene formed a conjugated bridge for intermolecular charge transfer and generated stable radical cations,verified by electron spin *** andπ-πstacking orientation of D-A NGs also provided advantageous hopping transport *** favorable charge transfer within D-A NGs,systematic explorations indicated a strong interface coupling and noticeable charge transfer across the D-A NGs and perovskite interface,where electrons would flow from D-A NGs to perovskite,and holes would flow from perovskite to D-A ***,the hole mobility of spiro-OMeTAD was also enhanced because the D-A NGs would diffuse into the spiro-OMeTAD *** a result,planar n-i-p perovskite solar cellsmodified byD-ANG-OMe/D-ANG-tBudeliveredchampion power conversion efficiencies(PCEs)of 23.25%and 23.51%,respectively.

关键词： perovskite solar cell radicals donor-acceptor nanographene hole mobility interfacial charge transfer

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New 'Non-phosphorous'and Efficient Diglycolamide-acid Based Extraction Systems

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结构化学 2020年第12期39卷 2139-2147页

作者： ZHANG Yang ZHAO Zhi-Gang XIE Mei-Ying XUE Li-Yan YU Shu-Wen JIANG Zheng-Ming SHAO Zhi-Heng WANG Kai-Xian YANG Fan CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Fun

In this paper,we briefly reviewed the new non-phosphorous extraction systems proposed according to the different applicational *** systems were established by choosing the suitably modified chemical group and the corresponding substrate with unique chemical/physical *** guiding principle for the foundation of these new systems was to combine the advantages of the substrate and functions of the modified chemical group,majorly the *** induced physical/chemical properties of the substrate and the functions of modified moieties had the potential to import unique traits to the as-founded adsorbent,establishing a task-tailored bi-/multi-functional *** believe the new systems had the potential to create new adsorption/desorption extraction/bask-extraction paradigms to improve the selectivity and capacity of the extraction/adsorption process,as well as to be more time-efficient and environmentally friendly.

关键词： extraction adsorption/desorption diglycolamide acid modification

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A Tetranuclear Cuprous Halide Cluster Exhibiting Efficient Blue Thermally Activated Delayed Fluorescence

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Chinese Journal of Structural Chemistry 2021年第11期40卷 1489-1495,1408页

作者： WANG Pei HUANG Chun-Hua CHEN Xu-Lin LU Can-Zhong CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Institute of Rare-earth Materials Haixi InstitutesChinese Academy of SciencesXiamen 361021China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Huaqiao University Xiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

A new tetranuclear cuprous halide complex,(CuBr)_(4)(PN)_(2)(PN=2-(diphenylphosphaneyl)-6-methoxypyridine),was synthesized and fully *** solid state,this complex exhibits efficient blue emission with a photoluminescence quantum yield of 43.3%and a decay time of 19μs at room *** theoretical calculations,combined with the temperature dependence of spectroscopic properties and emission decay behaviors,indicate that the emission in the solid state originates from the ^(1,3)(MLCT+XLCT)excited states,which are in thermal equilibrium with a small energy gap of about 0.1 eV.

关键词： cuprous complex thermally activated delayed fluorescence blue emission photoluminescence

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Identifying and Engineering Active Sites at the Surface of Porous Single-Crystalline Oxide Monoliths to Enhance Catalytic Activity and Stability

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CCS Chemistry 2022年第4期4卷 1441-1451页

作者： Guoming Lin Hao Li Kui Xie Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China FuzhouFujian 350108 Advanced Energy Science and Technology Guangdong Laboratory HuizhouGuangdong 116023

Identifying and engineering active sites play a key role in many catalytic ***,we create well-defined surface structures through the growth of porous single-crystalline Mn_(3)O_(4) and Mn_(2)O_(3) monoliths at centimeter scale and confine atomically dispersed Pt ions in the lattice at the twisted surface to construct isolated active *** activation of lattice oxygen linked to isolated Pt ions is much more effective than the lattice oxygen linked to Mn ions in local structures,leading to an approximately sevento eightfold enhancement of surface oxygen exchange coefficients for catalytic CO *** active structures of PtO_(1.5) and PtO_(1.4) confined at the well-defined surfaces contribute to the efficient activation of lattice oxygen linked to Pt ions in local structures in addition to the chemisorption of CO in the oxidation *** demonstrate the complete CO oxidation with air at 65℃ without degradation being observed even after continuous operation of 300 h.

关键词： porous single crystal active site lattice oxygen activation stability

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