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Biomass-derived porous carbon with single-atomic cobalt toward high-performance aqueous zinc-sulfur batteries at room temperature

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Journal of Energy Chemistry 2024年第8期95卷 325-335,I0008页

作者： Shenfei Zhao Xiaoshuai Wu Jiliang Zhang Chunjie Li Zixiang Cui Weihua Hu Ruguang Ma Changming Li institute for Clean Energy&Advanced materials School of Materials&EnergySouthwest UniversityChongqing 400715China institute for materials science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009JiangsuChina school of materials science and engineering Dalian Jiaotong UniversityDalian 116028LiaoningChina

Aqueous zinc-sulfur batteries at room temperature hold great potential for next-generation energy storage technology due to their low cost,safety and high energy ***,slow reaction kinetics and high activation energy at the sulfur cathode pose great challenges for the practical ***,biomass-derived carbon with single-atomic cobalt sites(MMPC-Co)is synthesized as the cathode in Zn-S *** catalysis of single-atom Co sites greatly promotes the transform of cathode electrolyte interface(CEI)on the cathode surface,while offering accelerated charge transfer rate for high conversion reversibility and large electrochemical surface area(ECSA)for high electrocatalytic ***,the rich pore structure not only physically limits sulfur loss,but also accelerates the transport of zinc *** addition,the large pore volume of MMPC-Co is able to relieve the stress effect caused by the volume expansion of Zn S during charge/discharge cycles,thereby maintaining the stability of electrode ***,the sulfur cathode maintains a high specific capacity of 729.96 m A h g^(-1)after 500 cycles at4 A g^(-1),which is much better than most cathode materials reported in the *** work provides new insights into the design and development of room-temperature aqueous Zn-S batteries.

关键词： Biomass-derived carbon Single-atom catalysts Rich pore structure Sulfur cathode Aqueous zinc-sulfur batteries

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Characteristic Study of Self-Powered Sensors Based on Native Protein Composite Film

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Energy & Environmental materials 2024年第1期7卷 226-232页

作者： Jiehui Xue Huijing Xiang Yanrong Zhang Jun Yang Xia Cao Zhonglin Wang Beijing institute of Nanoenergy and Nanosystems Chinese Academy of Sciences school of Resources Environment and Materials School of Physics Science and Technology Center on Nanoenergy Research Guangxi University Center for Green Innovation School of Mathematics and Physics University of Science and Technology Beijing Research Centre of Information technology Shenzhen Institute of Information Technology school of Chemistry and Biological engineering University of Science and Technology Beijing school of materials science and engineering Georgia Institute of Technology

Flexible electronic sensors composed of flexible film and conductive materials play an increasingly important role in wearable and internet information *** has received more and more attention and made some progress over the ***,it is still a great challenge to prepare biocompatible and highly transparent conductive *** white is a pure natural protein-rich material.

关键词： flexible sensors intelligent sensing natural protein-rich material triboelectric nanogenerators

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Deep Insight of Design,Mechanism,and Cancer Theranostic Strategy of Nanozymes

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Nano-Micro Letters 2024年第2期16卷 165-217页

作者： Lu Yang Shuming Dong Shili Gai Dan Yang He Ding Lili Feng Guixin Yang Ziaur Rehman Piaoping Yang Key Laboratory of Superlight materials and Surface technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001People’s Republic of China Yantai Research institute Harbin Engineering UniversityYantai 264000People’s Republic of China Key Laboratory of Green Chemical engineering and technology of Heilongjiang Province College of Material Science and Chemical EngineeringHarbin University of Science and TechnologyHarbin 150040People’s Republic of China Department of Chemistry Quaid-i-Azam UniversityIslamabad 45320Pakistan

Since the discovery of enzyme-like activity of Fe3O4 nanoparticles in 2007,nanozymes are becoming the promising substitutes for natural enzymes due to their advantages of high catalytic activity,low cost,mild reaction conditions,good stability,and suitable for large-scale ***,with the cross fusion of nanomedicine and nanocatalysis,nanozyme-based theranostic strategies attract great attention,since the enzymatic reactions can be triggered in the tumor microenvironment to achieve good curative effect with substrate specificity and low side ***,various nanozymes have been developed and used for tumor *** this review,more than 270 research articles are discussed systematically to present progress in the past five ***,the discovery and development of nanozymes are ***,classification and catalytic mechanism of nanozymes are ***,activity prediction and rational design of nanozymes are focused by highlighting the methods of density functional theory,machine learning,biomimetic and chemical ***,synergistic theranostic strategy of nanozymes are ***,current challenges and future prospects of nanozymes used for tumor theranostic are outlined,including selectivity,biosafety,repeatability and stability,in-depth catalytic mechanism,predicting and evaluating activities.

关键词： Nanozymes Classification Prediction and design Catalytic mechanism Tumor theranostics

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Micro-aluminum powder with bi-or tri-component alloy coating as a promising catalyst:Boosting pyrolysis and combustion of ammonium perchlorate

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Defence technology（防务技术） 2024年第3期33卷 100-113页

作者： Chao Wang Ying Liu Mingze Wu Jia Li Ying Feng Xianjin Ning Hong Li Ningfei Wang Baolu Shi school of Aerospace engineering Beijing Institute of TechnologyBeijing 100081China school of materials science and engineering Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Explosion science and technology Beijing Institute of TechnologyBeijing 100081China

A novel design of micro-aluminum(μAl)powder coated with bi-/tri-component alloy layer,such as:Ni-P and Ni-P-Cu(namely,Al@Ni-P,Al@Ni-P-Cu,respectively),as combustion catalysts,were introduced to release its huge energy inside Al-core and promote rapid pyrolysis of ammonium perchlorate(AP)at a lower temperature in aluminized *** microstructure of Al@Ni-P-Cu demonstrates that a three-layer Ni-P-Cu shell,with the thickness of~100 nm,is uniformly supported byμAl carrier(fuel unit),which has an amorphous surface with a thickness of~2.3 nm(catalytic unit).The peak temperature of AP with the addition of Al@Ni-P-Cu(3.5%)could significantly drop to 316.2℃ at high-temperature thermal decomposition,reduced by 124.3℃,in comparison to that of pure AP with 440.5℃.It illustrated that the introduction of Al@Ni-P-Cu could weaken or even eliminate the obstacle of AP pyrolysis due to its reduction of activation energy with 118.28 kJ/*** laser ignition results showed that the ignition delay time of Al@Ni-P-Cu/AP mixture with 78 ms in air is shorter than that of Al@Ni-P/AP(118 ms),decreased by 33.90%.Those astonishing breakthroughs were attributed to the synergistic effects of adequate active sites on amorphous surface and oxidation exothermic reactions(7597.7 J/g)of Al@Ni-P-Cu,resulting in accelerated mass and/or heat transfer rate to catalyze AP pyrolysis and ***,it is believed to provide an alternative Al-based combustion catalyst for propellant designer,to promote the development the propellants toward a higher energy.

关键词： Micro-aluminum powder(μAl) Nano-sized alloy coating Combustion catalyst Ammonium perchlorate Pyrolysis behavior Ignition and combustion

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Enhancing BiVO_(4)photoanode performance by insertion of an epitaxial BiFeO_(3)ferroelectric layer

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Journal of Energy Chemistry 2024年第2期89卷 71-78,I0003页

作者： Haejin Jang Yejoon Kim Hojoong Choi Jiwoong Yang Yoonsung Jung Sungkyun Choi Donghyeon Lee Ho Won Jang Sanghan Lee school of materials science and engineering Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Department of materials science and engineering Seoul National UniversitySeoul 08826Republic of Korea

BiVO_(4)(BVO)is a promising material as the photoanode for use in photoelectrochemical ***,the high charge recombination and slow charge transfer of the BVO have been obstacles to achieving satisfactory photoelectrochemical *** address this,various modifications have been attempted,including the use of ferroelectric *** materials can form a permanent polarization within the layer,enhancing the separation and transport of photo-excited electron-hole *** this study,we propose a novel approach by depositing an epitaxial BiFeO_(3)(BFO)thin film underneath the BVO thin film(BVO/BFO)to harness the ferroelectric property of *** self-polarization of the inserted BFO thin film simultaneously functions as a buffer layer to enhance charge transport and a hole-blocking layer to reduce charge *** a result,the BVO/BFO photoanodes showed more than 3.5 times higher photocurrent density(0.65 mA cm^(-2))at 1.23 V_(RHE)under the illumination compared to the bare BVO photoanodes(0.18 m A cm^(-2)),which is consistent with the increase of the applied bias photon-to-current conversion efficiencies(ABPE)and the result of electrochemical impedance spectroscopy(EIS)*** results can be attributed to the self-polarization exhibited by the inserted BFO thin film,which promoted the charge separation and transfer efficiency of the BVO photoanodes.

关键词： Photoelectrochemical Photoanode BiVO_(4) Ferroelectric materials BiFeO_(3)

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Enhanced memristor performance via coupling effect of oxygen vacancy and ferroelectric polarization

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Journal of materials science & technology 2024年第4期171卷 139-146页

作者： Zhi Yun Yue Zhi Dong Zhang Zhan Jie Wang Shenyang National Laboratory for materials science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China school of materials science and engineering University of Science and Technology of ChinaShenyang 110016China school of materials science and engineering Shenyang University of TechnologyShenyang 110870China

As a new type of nonvolatile memory,the resistive memristor has broad application prospects in in-formation storage and neural computing based on its excellent resistive switching(RS)*** present,it is still a great challenge to improve both ferroelectric polarization and leakage current to achieve a high RS on/offratio of ferroelectric ***,epitaxial Pb(Zr_(0.40)Ti_(0.60))O_(3)(PZT)thin films with low content Ca doping were deposited on the Nb:SrTiO_(3)substrate to prepare PCZT/NSTO het-erostructures and their RS behaviors were *** research findings show that compared with pure PZT film,the ferroelectric polarization of 1-mol%-Ca-doped PZT film is slightly improved,while the leak-age current is increased by three orders of ***,the RS on/offratio reaches 2.5×10^(5),about three orders of magnitude higher than pure PZT *** theoretical analysis reveals that the RS behavior of PCZT/NSTO heterostructures is controlled by the PCZT/NSTO interfacial barrier and the space charge-limited current *** results demonstrate that the ferroelectricity and electricity of ferroelectric thin films can be improved simultaneously by doping low-content Ca ions to increase the RS performance,which provides a good reference for the development of high-performance ferroelectric memristor devices.

关键词： Ferroelectric memristor Ca-doped PZT Ferroelectric polarization Oxygen vacancies Resistive switching

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Boosting solar hydrogen production via electrostatic interaction mediated ***-TiO_(2−x)biohybrid system

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Nano Research 2024年第6期17卷 5390-5398页

作者： Xingxing Lv Weicheng Huang Ya Gao Rui Chen Xiaowei Chen Danqing Liu Ling Weng Liangcan He Shaoqin Liu school of Material science and Chemical engineering Harbin University of Science and TechnologyHarbin 150040China school of Medicine and Health and Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of EducationHarbin Institute of TechnologyHarbin 150001China Department of Physics School of ScienceJimei UniversityXiamen 361021China Zhengzhou Research institute Harbin Institute of TechnologyZhengzhou 450046China

Hydrogen is garnering growing attention as a green energy source with zero carbon ***,most hydrogen production technologies still rely on the consumption of fossil fuels and are therefore *** has driven the search for more environmentally friendly methods of hydrogen *** this work,we present an innovative approach to enhance hydrogen generation via electrostatic interaction in the Escherichia coli and defective titanium dioxide(TiO_(2−x))*** method involves narrowing the forbidden bandwidth of TiO2 while introducing defect bands into its conduction band to facilitate visible light absorption and efficient charge *** biohybrid system,consisting of *** and TiO_(2−x),demonstrates a remarkable capability to produce 1.25 mmol of hydrogen within a 3-h timeframe under visible light *** accomplishment signifies a 3.31-fold rise in hydrogen production in comparison to ***,signifying a substantial enhancement in hydrogen production ***,we delve into the alterations in biological metabolites associated with hydrogen production and the changes in electron transfer in different biohybrid *** provides valuable insights into the understanding of the intrinsic mechanisms that drive the *** work introduces a novel and promising avenue for achieving this exciting goal.

关键词： Escherichia coli TiO_(2−x)nanoparticles biohybrid system hydrogen production

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Dual-functional POM@IL complex modulate hole transport layer properties and interfacial charge dynamics for highly efficient and stable perovskite solar cells

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Chinese Chemical Letters 2024年第7期35卷 461-464页

作者： Boyuan Hu Jian Zhang Yulin Yang Yayu Dong Jiaqi Wang Wei Wang Kaifeng Lin Debin Xia MIIT Key Laboratory of Critical materials technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The severe interfacial charge recombination as well as the stability issues brought by the Li-TFSI still hinder the commercialization of high-performance perovskite solar cells(PSCs).Here,a polyoxometalates(POMs)-based complex,POM@ionic liquid(IL),is synthesized and applied as an effective additive that simultaneously enhances the performance and stability of *** interactions between POM@IL complex and Li-TFSI inhibit the aggregation of *** synergistic oxidation of POM@IL complex and Li-TFSI towards 2,2,7,7-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene(Spiro-OMeTAD)effectively enhances the electrical properties of hole transport layer film and the photovoltaic performances of *** champion device modified with the POM@IL complex yields an excellent power conversion efficiency(PCE)of 22.73%.Moreover,the incorporation of POM@IL improves the humidity stability of *** storing under high humidity conditions(25℃,60%RH)for 1200 h,the POM@IL modified device retained a remarkable 81.2%of its initial *** work provides new insight into constructing POMs-based materials for high-performance photovoltaic devices.

关键词： Polyoxometalates Ionic liquid Perovskite solar cells Energy alignment Humidity stability

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Stabilization Controller of An Extended Chained Nonholonomic System With Disturbance:An FAS Approach

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1262-1273页

作者： Zhongcai Zhang Guangren Duan school of engineering Qufu Normal UniversityRizhao 276826China Center for Control science and technology Southern University of Science and TechnologyShenzhen 518055 Center for Control Theory and Guidance technology Harbin Institute of TechnologyHarbin 150001China

This study examines the stabilization issue of extended chained nonholonomic systems(ECNSs)with external *** the existing approaches,we transform the considered system into a fully actuated system(FAS)model,simplifying the stabilizing controller *** implement a separate controller design and propose exponential stabilization controller and finite-time stabilization controller under finite-time disturbance observer(FTDO)for the two system *** addition,we discuss the specifics of global stabilization control *** approach demonstrates that two system states exponentially or asymptotically converge to zero under the provided switching stabilization control strategy,while all other system states converge to zero within a finite time.

关键词： design stabilization system

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Thermal conductivity of GeTe crystals based on machine learning potentials

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Chinese Physics B 2024年第4期33卷 104-107页

作者：张健张昊春李伟峰张刚 school of Energy science and engineering Harbin Institute of TechnologyHarbin 150001China institute of High Performance Computing Agency for ScienceTechnology and ResearchSingapore 138632Singapore school of Physics&State Key Laboratory of Crystal materials Shandong UniversityJinan 250100China

GeTe has attracted extensive research interest for thermoelectric *** this paper,we first train a neuroevolution potential(NEP)based on a dataset constructed by ab initio molecular dynamics,with the Gaussian approximation potential(GAP)as a *** phonon density of states is then calculated by two machine learning potentials and compared with density functional theory results,with the GAP potential having higher ***,the thermal conductivity of a GeTe crystal at 300 K is calculated by the equilibrium molecular dynamics method using both machine learning potentials,and both of them are in good agreement with the experimental results;however,the calculation speed when using the NEP potential is about 500 times faster than when using the GAP ***,the lattice thermal conductivity in the range of 300 K-600 K is calculated using the NEP *** lattice thermal conductivity decreases as the temperature increases due to the phonon anharmonic *** study provides a theoretical tool for the study of the thermal conductivity of GeTe.

关键词： machine learning potentials thermal conductivity molecular dynamics

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