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SSRN 2023年

作者： He, Cuihong Zou, Jingmin Sun, Chuanfu Liu, Qin College of Chemistry Fuzhou University Fujian Fuzhou350108 China 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 Fujian Fuzhou350002 China

Potassium-ion batteries have drawn great attention owing to the abundant and low-cost potassium resources. However, the lack of highly reversible K+-storage electrodes remains a key concern, due to the large size of K+ ions. Inorganic-open-framework KTiOPO4-type (KTP) anodes are promising K+-hosts, due to their large interstitial vacancies allowing fast and reversible insertion of K+ ions with low structural evolution. Here, we report a new member in the KTP family, K0.63Cr0.56Ti0.55OPO4 (KCTP), with partial aliovalent substitution. The KCTP exhibits a high specific capacity of 123.4 mAh/g and achieves stable cycle life, over 135 days with 98% capacity retention at 10 mA/g and up to 9.9 months with 81% retention at 20 mA/g. The K+-storage process involves biphasic reaction and solid-solution reaction, with a minor volume change of only 8.06%. This work demonstrates that inorganic open frameworks with aliovalent substitution may open a promising way to design high-performance potassium-ion batteries. © 2023, The Authors. All rights reserved.

关键词： Anodes

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Porous carbon with predominant graphitic nitrogen and abundant defects mediated by reductive molten salt enables boosted sulfur conversion for room-temperature sodium-sulfur batteries

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Chemical Engineering Journal 2025年 516卷

作者： Tang, Kejian Peng, Xiangqi Zhang, Ziying Wang, Yingxinjie Li, Guohao Wang, Jie Chen, Chi Xie, Xiuqiang Wu, Zhenjun College of Chemistry and Chemical Engineering Hunan University Changsha410082 China College of Materials Science and Engineering Hunan University Changsha410082 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002 China

Room-temperature sodium-sulfur (RT Na-S) batteries are promising for large-scale energy storage. However, their practical applications are still hindered by low S utilization and grievous capacity decay caused by the sluggish sodium polysulfides (NaPSs) conversion kinetics. To address these issues, a multifunctional carbon is prepared by a reductive molten salt (KI) method as the S host. Notably, KI can trigger intense etching reactions under high temperature through its transformation to KIO3 and further decomposition to O2. Owing to its unique etching mechanisms, the KI-mediated carbonaceous host (KI-NC) features in predominant graphitic N configuration, a defect-rich carbon matrix, and ultrahigh specific surface area, in which the defective sites can alter the adsorption mode of graphitic N toward NaPSs, thus significantly enhancing the chemical adsorption toward NaPSs and facilitating NaPSs conversion effectively. The well-developed pore structures can achieve valid physical confinement and improve the S loading ratio. Meanwhile, decreased Rct and RSEI during both charge and discharge processes confirm the boosted kinetics of S redox reactions. Consequently, the as-synthesized cathodes can retain a capacity of 940mAh g−1 after 100 cycles at 0.2C (1C = 1675mAh g−1) and exhibit preeminent rate performance (455mAh g−1 at 3C) with a high sulfur loading of 69.0 wt%. This work opens a new avenue to promote the adsorption and catalysis functions of carbonaceous hosts for RT Na-S batteries. © 2025

关键词： Redox reactions

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A Stable Polyoxometalate-based Coordination Polymer for Light Driven Degradation of Organic Dye Pollutant

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Chinese Journal of Structural Chemistry 2021年第11期40卷 1449-1455,1406页

作者： WANG Man WU Xiao-Yuan WANG Sa-Sa LU Can-Zhong College of Chemistry Fuzhou UniversityFuzhou 350108China 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 University of Chinese Academy of Sciences Beijing 100049China Xiamen Institute of Rare Earth Materials Chinese Academy of SciencesXiamen 361021China

A new POM-based coordination polymer,[Cl_(2)Cu^(Ⅰ)_(11)(trz)_(8)][H_(3)SiW_(12)O_(40)](1),was successfully obtained under hydrothermal *** compound was characterized by single-crystal X-ray diffraction,TGanalyses,IR spectra and PXRD *** 1 shows extreme stability and outstanding catalytic activity to the degradation of organic dye pollutant.

关键词： polyoxometalate-based coordination polymer photocatalysis 1,2,4-triazole

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AIEgen-Sensitized Lanthanide Nanocrystals as Luminescent Probes for Intracellular Fe3 Monitoring

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SSRN 2023年

作者： Liu, Fan Zhou, Wusen Li, Xingjun Li, Zhuo Lu, Shan Shang, Xiaoying Tan, Chong Hu, Ping Chen, Zhuo Chen, Xueyuan College of Chemistry Fuzhou University Fujian Fuzhou350108 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials State Key Laboratory of Structural Chemistry Fujian Institute of Research the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China

The abnormal Fe3+ level is known to cause various diseases, such as heart failure, liver damage and neurodegeneration. In situ probing Fe3+ in living cells or organisms is highly desired for both biological research and medical diagnostics. Herein, hybrid nanocomposites NaEuF4@TCPP were constructed by the assembly of an aggregation-induced emission luminogen (AIEgen) TCPP and NaEuF4 nanocrystals (NCs). The anchored TCPP on the surface of NaEuF4 NCs can reduce rotational relaxation of the excited state and efficiently transfer the energy to the Eu3+ ions with minimized nonradiative energy loss. Consequently, the prepared NaEuF4@TCPP nanoparticles (NPs) exhibited an intense red emission with a 103-fold enhancement relative to that in NaEuF4 NCs under 365 nm excitation. A selectively quenching response to Fe3+ ions for the NaEuF4@TCPP NPs makes them luminescent probes for sensitive detection of Fe3+ ions with a low detection limit of 340 nM. Moreover, the luminescence of NaEuF4@TCPP NPs could be recovered by the addition of iron chelators. Benefiting from their good biocompatibility and stability in living cells, together with the characteristic of the reversible luminescence response, the lipo-coated NaEuF4@TCPP probes were successfully applied for real-time monitoring of Fe3+ ions in living HeLa cells. These results are expected to motivate the exploration of AIE-based lanthanide probes for sensing and biomedical applications. © 2023, The Authors. All rights reserved.

关键词： Nanocrystals

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High-volumetric-capacity WSe2 Anode for Potassium-ion Batteries

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Chinese Journal of Structural Chemistry 2021年第7期40卷 926-932,840页

作者： CHEN Ming ZHAO Jun-Mei SUN Chuan-Fu College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China 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 Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100039China

Exploring high-capacity electrode materials is critical for the development of K-ion *** this work,we report a layered-structured tungsten selenide(WSe2)anode,which not only delivers an ultrahigh volumetric capacity of 1772.8 Ah/L(or 188.4 mAh/g)at a current density of 5 mA/g but also exhibits good rate capability(72 mAh/g at 200 mA/g)and cycling stability(83.14%capacity retention over 100 cycles at 100 mA/g).We have also revealed the underlying reaction mechanism through ex situ X-ray powder ***,proof-of-concept full-cell batteries comprising of WSe2 anodes and Prussian Blue cathodes are capable of delivering an energy density of 135.2 Wh/kgcathode+*** work highlights the potential of WSe2 as a promising high-volumetric-capacity anode material for rechargeable potassium-ion batteries.

关键词： tungsten selenide potassium-ion batteries high volumetric capacity conversion reaction

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Vat photopolymerization of high-solid content UV-curable resins for low-temperature sintered ceramic catalyst scaffolds

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Ceramics International 2025年

作者： Lin, Zean Li, Yan Kuzhandaivel, Dhandapani Pu, Xiaowen Peng, Dingpeng Zheng, Longhui Wu, Lixin Weng, Zixiang College of Chemical Fuzhou University Fuzhou350108 China 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 Fuzhou350002 China Fujian College University of Chinese Academy of Sciences Fuzhou350002 China College of Ecological Environment and Urban Construction Fujian University of Technology Fuzhou350118 China

This study addresses the challenge of fabricating high-performance ceramic catalyst scaffolds with complex geometries and optimized properties by introducing an innovative approach using vat photopolymerization 3D printing of high-solid content UV-curable resins. This method enables the creation of a ceramic catalysts with tailored geometries, hierarchical porosities, and enhanced catalytic performances. Composite slurries containing up to 50 wt% ceramic powders (pseudo-boehmite, halloysite nanotubes, and CeO2) were developed and optimized for digital light processing (DLP) 3D printing, with fine-tuned rheological properties to enable the printing of complex 3D structures with deflection angle topologies. Low-temperature sintering at 600 °C yielded crack-free monolithic catalysts with a high specific surface area (112.45 m2/g) and hierarchical porosity. The 3D printed CeO2/γ-Al2O3-HNTs catalysts demonstrated exceptional photocatalytic performance for tetracycline degradation, achieving 92.7 % removal within 2 h, with the 3D printed topology significantly enhancing mass transfer and light utilization compared to conventional powder or honeycomb catalysts. This facile approach enables precise control over the catalyst geometry and composition, offering a versatile platform for designing advanced functional ceramic materials for environmental remediation and catalysis applications. This study highlights the potential of 3D printing technology to revolutionize catalyst design and manufacturing, paving the way for more efficient and tailored catalytic systems. © 2025

关键词： Sintering

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A Hexanuclear Titanium-Oxo Cluster with Both Photoprotection and Antioxidant Properties

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SSRN 2024年

作者： Wang, Jia-Ning Shen, Chuan-Qi Liu, Jin Nan, Zi-Ang Huang, You-Gui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on 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 University of Chinese Academy of Sciences Beijing100049 China

Two hexanuclear titanium-oxo clusters, Ti6O6(OiPr)6L16·2CH3CN (1) and Ti6O4(OiPr)10(OiPrL2)2L22 (2), were synthesized via solvothermal reactions (HL1 = o-nitrobenzoic acid and H2L2 = 1,3-bisbenzyl-2-oxoimidazolidine-4,5-dicarboxylic acid). Compound 1 is a cluster with an octahedral {Ti6O6} core, while compound 2 features as a cluster with chair-shaped {Ti6O4} core. Both the compounds show strong UV absorptions, but their activities to radicals including 2,2-diphenylpicrylhydrazyl (DPPH), hydroxyl, and azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) are significantly different. In contrast to the silence of all of the three radicals to compound 1, compound 2 is able to efficiently scavenge all of them. This obvious difference is attributed to that compound 2 shows higher reducibility, which is probably intrinsically related to electronic donating ligands L2 and OiPrL2. The coexistence of strong UV absorption and great antioxidant activity enables compound 2 to protect skin against photoaging and enhance skin health effectively. These results indicate titanium-oxo clusters bearing redox active ligands are potential for next-generation skincare products. © 2024, The Authors. All rights reserved.

关键词： Ligands

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Liquid-phase Exfoliated WS2-Graphene Composite Anodes for Potassium-ion Batteries

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Chinese Journal of Structural Chemistry 2020年第3期39卷 493-499,378页

作者： WANG Wei BAO Jing-Ze 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 100190China

Tungsten disulfide(WS2) has been recognized as a promising anode material for rechargeable potassium-ion batteries(PIBs). However, its K-ion intercalation capacity is limited to ~60 mAh·g^(-1). Here, we report a WS2-graphene composite anode which is fabricated through simple filtration of liquid-phase exfoliated WS2 and graphene nanosheet delivers a significantly improved specific capacity of 137 mAh·g^(-1) at a current density of 10 mA·g^(-1). The composite anodes also exhibit remarkable rate capability and long-term cyclability over 500 cycles. These results highlight the WS2-graphene composite structure as a promising anode material for long lifespan rechargeable potassium-ion batteries.

关键词： tungsten disulfide liquid-phase exfoliation K-ion battery grapheme

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

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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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