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Chevrel phase: A review of its crystal structure and electrochemical properties

Progress in Natural science:materials International 2023年第1期33卷 8-15页

作者： Meng Liu Guocheng Lv Tianming Liu Hao Liu Lingchang Kong Lintao Tian Wenxiu Rao Yuxin Li Libing Liao Juchen Guo Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences(Beijing) School of Science China University of Geosciences Materials Science and Engineering Program University of California-Riverside Department of Chemical and Environmental Engineering University of California – Riverside

Chevrel phase compounds have attracted increasing attention as electrochemical energy storage materials and electro-catalysts. Benefiting from their unique crystal structure, Chevrel phase compounds can not only function as the host structures for reversible intercalation of a broad range of cations, but also exhibit high catalytic activity in electrochemical reduction reactions. Here we provide an overview of recent progress in the development of Chevrel phase materials including new understanding of structural features, synthetic methods, and electrochemical properties. A brief conclusion and perspectives on the future development of Chevrel phase materials are also provided.

关键词： Chevrel phase Electrochemical properties Energy storage Electro-catalysis

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Low-Temperature Methanolysis of Polycarbonate over Solid Base Sodium Aluminate

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Langmuir 2024年第10期40卷 5338-5347页

作者： Krisbiantoro, Philip Anggo Sato, Miyu Lin, Tzu-Ming Chang, Yu-Chia Peng, Tzu-Yun Wu, Yun-Chih Liao, Weisheng Kamiya, Yuichi Otomo, Ryoichi Wu, Kevin C.-W. Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering College of Engineering National Taiwan University Taipei10617 Taiwan Graduate School of Environmental Science Hokkaido University Nishi 5 Kita 10 Sapporo060-0810 Japan Faculty of Environmental Earth Science Hokkaido University Nishi 5 Kita 10 Sapporo060-0810 Japan Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan320 Taiwan

Herein, a low-cost and readily available sodium aluminate (NaAlO2) was used as a solid base catalyst for the depolymerization of polycarbonate (PC) via methanolysis in the presence of tetrahydrofuran (THF) as a solvent. NaAlO2 was highly active for the reaction, and the performance was comparable to that of soluble strong base SrO and much higher than those of MgO and CaO. By the reaction over the catalyst, a highly pure and crystalline bisphenol A (BPA) was obtained. Among tested organic solvents, THF was the best in aiding PC methanolysis over NaAlO2 due to the polarity similar to PC according to Hansen solubility parameters (HSPs). At 60 °C, 98.1% PC conversion and 96.8% BPA yield were achieved within just 2 h. NaAlO2 was reusable without any severe catalyst deactivation in at least four runs. The mechanistic study revealed that the reaction proceeded via the methoxide pathway, with THF aiding the dissolution of PC. The reaction over NaAlO2 possessed a low apparent activation energy (Ea) of 75.1 kJ mol-1, which is the lowest ever reported so far for the reaction over solid catalysts. © 2024 The Authors. Published by American chemical Society.

关键词： Sodium Aluminate

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Two-dimensional conjugated N-rich covalent organic frameworks for superior sodium storage

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science China Chemistry 2022年第7期65卷 1291-1298页

作者： Xiya Yang Yucheng Jin Baoqiu Yu Lei Gong Wenbo Liu Xiaolin Liu Xin Chen Kang Wang Jianzhuang Jiang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and TechnologyBeijing 100083China

Sodium-ion batteries(SIBs) are considered as a promising next-generation energy storage system. To achieve the large-scale application of SIBs, it is crucial to develop cost-effective anode materials with high Na-ion storage capacity. Herein twodimensional(2D) conjugated covalent organic frameworks(c COFs) with N-rich phthalocyanine(Pc) units fused via benzene moieties(named MPc-2D-c COFs) were explored as the SIBs anode materials. Electrochemical tests reveal their high reversible capacities of 538 and 342 m A h g^(-1) at 50 and 1000 m A g^(-1), respectively, good rate performance, and excellent stability,comparable to the state-of-the-art anode materials of SIBs, indicating their outstanding Na-ion storage performance. Ex situ Xray photoelectron and Fourier transform infrared spectroscopies together with theoretical calculations disclose the N atoms at the pore channels and conjugated pyrrole moieties of MPc-2D-c COFs provide abundant Na-ion storage sites. This, in cooperation with the enhanced electrical conductivity owing to the 2D conjugated structure, contributes to the outstanding Na-ion storage capacity of MPc-2D-c COFs. The present result is surely helpful for developing high-performance and cost-effective COFs as electroactive materials for SIBs.

关键词： covalent organic frameworks sodium-ion batteries phthalocyanine anode materials π-conjugated 2D COFs

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Acoustical properties of a 3D printed honeycomb structure filled with nanofillers:Experimental analysis and optimization for emerging applications

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Defence Technology（防务技术） 2024年第5期35卷 248-258页

作者： Jeyanthi Subramanian Vinoth kumar Selvaraj Rohan Singh Ilangovan S Naresh Kakur Ruban Whenish School of Mechanical Engineering Vellore Institute of TechnologyChennai600127Tamil NaduIndia Department of Mechanical Engineering SRM Institute of Science and TechnologyRamapuramChennai600089India Department of Chemical Engineering and Materials Science University of Southern CaliforniaLos Angeles90089USA Advanced Materials Research Centre Technology Innovation InstituteAbu Dhabi9639UAE Center for Biomaterials Cellular and Molecular TheranosticsVellore Institute of TechnologyVellore632014Tamil NaduIndia

The novelty of this research lies in the successful fabrication of a 3D-printed honeycomb structure filled with nanofillers for acoustic properties,utilizing an impedance tube setup in accordance with ASTM standard E *** Creality Ender-3,a 3D printer,was used for printing the honeycomb structures,and polylactic acid(PLA)material was employed for their *** organic,inorganic,and polymeric compounds within the composites were identified using fourier transformation infrared(FTIR)*** structure and homogeneity of the samples were examined using a field emission scanning electron microscope(FESEM).To determine the sound absorption coefficient of the 3D printed honeycomb structure,numerous samples were systematically developed using central composite design(CCD)and analysed using response surface methodology(RSM).The RSM mathematical model was established to predict the optimum values of each factor and noise reduction coefficient(NRC).The optimum values for an NRC of 0.377 were found to be 1.116 wt% carbon black,1.025 wt% aluminium powder,and 3.151 mm distance between parallel ***,the results demonstrate that a 3Dprinted honeycomb structure filled with nanofillers is an excellent material that can be utilized in various fields,including defence and aviation,where lightweight and acoustic properties are of great importance.

关键词： 3D printing Honeycomb structure Acoustics Field emission scanning electron microscope Response surface methodology

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Kinetic investigation of the energy storage process in graphene fiber supercapacitors:Unraveling mechanisms,fabrications,property manipulation,and wearable applications

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Carbon Energy 2025年第1期7卷 133-173页

作者： Juan Zhang Wenwen Liu Minzhi Du Qingli Xu Minren Hung Ruifang Xiang Meng Liao Xinhou Wang Bingjie Wang Aiping Yu Kun Zhang Key Laboratory of Textile Science and Technology(Donghua University) Ministry of EducationCollege of TextilesDonghua UniversityShanghaiChina Department of Chemical Engineering Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooONCanada Laboratory of Advanced Materials State Key Laboratory of Molecular Engineering of PolymersDepartment of Macromolecular ScienceFudan University2205 Songhu RdShanghai 200438China College of Mechanical Engineering Donghua UniversityShanghai 201620China

Graphene fiber supercapacitors(GFSCs)have garnered significant attention due to their exceptional features,including high power density,rapid charge/discharge rates,prolonged cycling durability,and versatile weaving ***,inherent challenges in graphene fibers(GFs),particularly the restricted ion-accessible specific surface area(SSA)and sluggish ion transport kinetics,hinder the achievement of optimal capacitance and rate *** existing reviews on GFSCs,a notable gap exists in thoroughly exploring the kinetics governing the energy storage process in *** review aims to address this gap by thoroughly analyzing the energy storage mechanism,fabrication methodologies,property manipulation,and wearable applications of *** theoretical analysis of the energy storage process,specific parameters in advanced GF fabrication methodologies are carefully summarized,which can be used to modulate nano/micro-structures,thereby enhancing energy storage *** particular,enhanced ion storage is realized by creating more ion-accessible SSA and introducing extra-capacitive components,while accelerated ion transport is achieved by shortening the transport channel length and improving the accessibility of electrolyte *** on the established structure-property relationship,several critical strategies for constructing optimal surface and structure profiles of GF electrodes are *** on the exceptional flexibility and wearability of GFSCs,the review further underscores their potential as foundational elements for constructing multifunctional e-textiles using conventional textile *** conclusion,this review provides insights into current challenges and suggests potential research directions for GFSCs.

关键词： fiber-shaped supercapacitor graphene ion storage ion transport wearable application

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Atomic CoN_(3)S_(1) sites for boosting oxygen reduction reaction via an atomic exchange strategy

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Nano Research 2022年第3期15卷 1803-1808页

作者： Qianjun Zhi Rong Jiang Wenping Liu Tingting Sun Kang Wang Jianzhuang Jiang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

It is vitally important to develop high-efficiency low-cost catalysts to boost oxygen reduction reaction(ORR)for renewable energy ***,an A-CoN_(3)S_(1)@C electrocatalyst with atomic CoN_(3)S_(1)active sites loaded on N,S-codoped porous carbon was produced by an atomic exchange *** constructed A-CoN_(3)S_(1)@C electrocatalyst exhibits an unexpected half-wave potential(0.901 V *** hydrogen electrode)with excellent durability for ORR under alkaline conditions(0.1 M KOH),superior to the commercial platinum carbon(20 wt.%Pt/C).The outstanding performance of A-CoN_(3)S_(1)@C in ORR is due to the positive effect of S atoms doping on optimizing the electron structure of the atomic CoN_(3)S_(1)active ***,the rechargeable zinc-air battery in which both A-CoN_(3)S_(1)@C and IrO_(2)were simultaneously served as cathode catalysts(A-CoN_(3)S_(1)@C&IrO_(2))exhibits higher energy efficiency,larger power density,as well as better stability,compared to the commercial Pt/C&IrO_(2)-based zinc-air *** present result should be helpful for developing lower cost and higher performance ORR catalysts which is expected to be used in practical applications in energy devices.

关键词： atomic sites oxygen reduction reaction CoN_(3)S_(1) zinc-air battery

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Recent progress in metal-organic frameworks: part Ⅰ--material preparation

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science China Chemistry 2025年第4期68卷 1230-1286页

作者： Jiandong Pang Zhengqing Zhang Shitong Zhang Xiangyu Guo Qiang Chen Xue-Wen Zhang Hao-Long Zhou Wei Gong Syed Shoaib Ahmad Shah Chongli Zhong Jian-Rong Li Jie-Peng Zhang Yong Cui Hai-Long Jiang Xian-He Bu School of Materials Science and Engineering Nankai UniversityTianjin 300350China School of Chemical Engineering and Technology Tiangong UniversityTianjin 300387China College of Materials Science&Engineering Beijing University of TechnologyBeijing 100124China MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular EngineeringSchool of ChemistryIGCMESun Yat-sen UniversityGuangzhou 510275China Department of Chemistry Shantou UniversityShantou 515063China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240.China Department of Chemistry University of Science and Technology of ChinaHefei 230026China Department of Chemistry School of Natural SciencesNational University of Sciences and Technology(NUST)Islamabad 44000Pakistan

Metal-organic frameworks(MOFs)refer to novel crystalline porous materials constructed by linking metal nodes and organic linkers through coordination *** predictable and designable long-range ordered structures,high surface areas,guest-accessible voids,and easily functionalized channels by pre-or post-modifications,MOFs have attracted much attention in the past two *** this review,we discussed the design strategies,synthesis methods,and structural characteristics of MOFs and MOF-derived/composite ***,the challenges facing MOF research were also discussed.

关键词： linking metal nodes organic linkers design strategies crystalline porous materials structural characteristics material preparation MOFs synthesis methods coordination bondsfeaturing

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Stretchable photosynaptic transistor with an ultralow energy consumption conferred using conjugated block copolymers/perovskite quantum dots nanocomposites

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materials Today 2023年 70卷 57-70页

作者： Chen, Wei-Cheng Lin, Yan-Cheng Hung, Chih-Chien Hsu, Li-Che Wu, Ya-Shuan Liu, Cheng-Liang Kuo, Chi-Ching Chen, Wen-Chang Department of Chemical Engineering and Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei10608 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan70101 Taiwan Department of Materials Science and Engineering National Taiwan University Taipei10617 Taiwan

Emulation of photonic synapses offers a promising avenue for developing low-energy consumption of soft electronics, neurologically inspired robotics, and neuromorphic network computation. In this paper, a fully stretchable photosynaptic device with ultralow energy consumption using intrinsically stretchable poly(δ-decanolactone) (PDL)-based conjugated block copolymers (BCPs) with perovskite quantum dots (PeQDs) is first reported. The findings reveal that selectively choosing solvents for the PDL-based BCPs effectively regulates the assembly of P3HT and the accommodation of PeQDs, leading to improved self-aggregation of PeQDs, increased grain size, and optimized interfaces between P3HT and PeQDs The BCPs/PeQDs composite effectively emulates significant features of photonic synapses, such as paired-pulse facilitation (PPF), spike-dependent and short/long-term neuroplasticity, demonstrating excellent performance, including the fastest response time (1 ms), the highest current contrast (4.9 × 105), PPF (1.93) and ultra-low energy consumption (0.3 aJ) at an operating voltage of –0.1 mV. Furthermore, the BCP/PeQDs exhibit remarkable neuromuscular synapse characteristics, including high strain and bending tolerance and spike-dependent plasticity, enabling the devices to achieve high classification accuracy in artificial neural network simulations during tensile strain. The accommodation solvent selectivity of BCP/PeQDs suggests a promising strategy for advancing neurologically soft electronics, human-like pattern recognition, and neuromorphic computation. © 2023 Elsevier Ltd

关键词： Block copolymers

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Composition-dependent catalytic performance of Au_(x)Ag_(25-x) alloy nanoclusters for oxygen reduction reaction

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Nano Research 2024年第11期17卷 9490-9497页

作者： Chuan Mu Biao Wang Qiaofeng Yao Qian He Jianping Xie Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Fuzhou 350207 China Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore School of Physical Science and Technology Southwest University Chongqing 400715 China Key Laboratory of Organic Integrated Circuits Ministry of Education and Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Science Tianjin University Tianjin 3700072 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China Department of Materials Science and Engineering National University of Singapore 9 Engineering Drive 1 Singapore 117575 Singapore

Oxygen reduction reaction(ORR)occurs at the cathode of electrochemical devices like fuel cells and in the Huron-Dow process,reducing oxygen to water or hydrogen *** the past years,various electrocatalysts with enhanced activity,selectivity,and durability have been developed for ***,an atomic-level understanding of how materials composition affects electrocatalytic performance has not yet been achieved,which prevents us from designing efficient catalysts based on the requirements of practical *** is partially because of the polydispersity of traditional catalysts and their unknown structure dynamics in the electrocatalytic *** we establish a full-spectrum of atomically precise and robust Au_(x)Ag_(25-x)(MHA)18(x=0–25,and MHA=6-mercaptohexanoic acid)nanoclusters(NCs)and systematically investigate their composition-dependent catalytic performance for ORR at the atomic *** results show that,with the increasing number of Au atoms in Au_(x)Ag_(25-x)(MHA)18 NCs,the electron transfer number gradually decreases from 3.9 for Ag25(MHA)18 to 2.1 for Au25(MHA)18,indicating that the dominant oxygen reduction product alters from water to hydrogen *** functional theory simulations reveal that the Gibbs free energy of OOH adsorption(ΔGOOH*)on Au25 is closest to the idealΔGOOH*of 4.22 eV to produce H_(2)O_(2),while Ag alloying makes theΔGOOH*deviate from the optimal value and leads to the production of *** study suggests that alloy NCs are promising paradigms for unveiling composition-dependent electrocatalytic performance of metal nanoparticles at the atomic level.

关键词： metal nanoclusters synthesis electrocatalysis structure-property relationship

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Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information

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Light(science & Applications) 2023年第11期12卷 2508-2518页

作者： Ting Jiang Yiru Wang Wanxin Huang Haifeng Ling Guofeng Tian Yunfeng Deng Yanhou Geng Deyang Ji Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Science Department of ChemistryInstitute of Molecular Aggregation ScienceTianjin University300072 TianjinChina Haihe Laboratory of Sustainable Chemical Transformations 300192 TianjinChina State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials Nanjing University of Posts&Telecommunications210023 NanjingChina State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology100029 BeijingChina School of Materials Science and Engineering Tianjin University300072 TianjinChina Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University300072 TianjinChina Collaborative Innovation Center of Chemical Science and Engineering Tianjin University300072 TianjinChina

The neuromorphic vision sensor(NeuVS),which is based on organic field-effect transistors(OFETs),uses polar functional groups(PFGs)in polymer dielectrics as interfacial units to control charge ***,the mechanism of modulating charge transport on basis of PFGs in devices is ***,the carboxyl group is introduced into polymer dielectrics in this study,and it can induce the charge transfer process at the semiconductor/dielectric interfaces for effective carrier transport,giving rise to the best device mobility up to 20 cm^(2) V^(−1) s^(−1) at a low operating voltage of−1 ***,the polarity modulation effect could further increase the optical figures of merit in NeuVS devices by at least an order of magnitude more than the devices using carboxyl group-free polymer ***,devices containing carboxyl groups improved image sensing for light information decoding with 52 grayscale signals and memory capabilities at an incredibly low power consumption of 1.25 fJ/*** findings provide insight into the production of high-performance polymer dielectrics for NeuVS devices.

关键词： charge polarity light

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