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Superhydrophobic Co/Fe sulfide nanoparticles and single-atoms doped carbon nanosheets composite air cathode for high-performance zinc-air batteries

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Journal of Energy Chemistry 2024年第9期96卷 568-577页

作者： Yan Tan Yijie Wang Aoshuang Li Xiucai Jiang Yuzhong Zhang Chuanwei Cheng Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China

Development of a high-performance bifunctional catalyst is essential for the actual implementation of zinc-air batteries in practical ***,a bifunctional cathode of Co_(3)S_(4)/FeS heterogeneous nanoparticles embedded in Co/Fe single-atom-loaded nitrogen-doped carbon nanosheets is ***-iron sulfides and single atomic sites with Co-N_(4)/Fe-N_(4)configurations are confirmed to coexist on the carbon matrix by EXAFS spectroscopy.3D self-supported super-hydrophobic multiphase composite cathode provides abundant active sites and facilitates gas–liquid-solid three-phase interface reactions,resulting in excellent electrocatalytic activity and batteries performance,i.e.,an OER overpotential(η_(10))of 260 mV,a half-wave potential(E_(1/2))of 0.872 V for ORR,aΔE of 0.618 V,and a discharge power density of 170 mW cm^(−2),a specific capacity of 816.3 mAh g^(−1).DFT analysis shows multiphase coupling of sulfide heterojunction through single-atomic metal doped carbon nanosheets reduces offset on center of electronic density of states before and after oxygen adsorption,and spin density of adsorbed oxygen with same spin orientation,leading to weakened charge/spin interactions between adsorbed oxygen and substrate,and a lowered oxygen adsorption energy to accelerate OER/ORR.

关键词： Zn-air battery Superhydrophobic interface Metal sulfide Heterostructure Spin density

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3D ordered RuO_(2)/WO_(3) heterostructure inverse opal arrays for highly-active and stable acidic oxygen evolution reaction

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Nano Research Energy 2025年第1期4卷 41-51页

作者： Runlong Jia Yan Tan Aoshuang Li Yijie Wang Chuanwei Cheng Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China

Development of highly active and stable acidic oxygen evolution reaction catalyst is very important for efficient water splitting while remains ***,we report a highly ordered RuO_(2)/WO_(3) inverse opals(IOs)catalyst to address the bottleneck problem of see-saw relationship between activity and stability,in which the crystalline and corrosion-resistant WO_(3) facilitates electron transport and stabilizes RuO_(2),whereas the lattice mismatch-induced amorphous-dominated RuO_(2) provides abundant unsaturated coordination sites to enhance the acidic oxygen evolution reaction(OER)***,the RuO_(2)/WO_(3) IOs demonstrates outstanding acidic OER performance in terms of a low overpotential of 180 mV to reach 10 mA·cm^(-2),and excellent stability for maintaining 100 hours continuous *** characterizations and density functional theory calculations reveal that interface coupling between WO_(3) and RuO_(2) can enhance the spin polarization of electrons and increase the overlaps of the electronic projected density of states between the Ru d orbitals of active metal and the O p orbitals of oxygen intermediates,facilitating OER pathway to switch from lattice oxygen mechanism to adsorbate evolution mechanism,which significantly decreases the reaction energy barrier of OER ***,the rich oxygen vacancies and WO_(3) supports in the heterostructures could inhibit the over-oxidation of Ru species,so as to enhance the activity and stability simultaneously.

关键词： inverse opal arrays heterostructure oxygen evolution reaction amorphous ruthenium oxide tungsten oxide

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Geometric Thermoelectric Pump:Energy Harvesting beyond Seebeck and Pyroelectric Effects

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Chinese Physics Letters 2023年第9期40卷 7-13页

作者：任捷 Center for Phononics and Thermal Energy Science China-EU Joint Lab on NanophononicsShanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Science and EngineeringTongji UniversityShanghai 200092China

Thermal-electric conversion is crucial for smart energy control and harvesting,such as thermal sensing and waste heat *** far,researchers are aware of two main ways of direct thermal-electric conversion,Seebeck and pyroelectric effects,each with different working mechanisms,conditions and ***,we report the concept of Geometric Thermoelectric Pump(GTEP),as the third way of thermal-electric conversion beyond Seebeck and pyroelectric *** contrast to Seebeck effect that requires spatial temperature difference,GTEP converts the time-dependent ambient temperature fluctuation into ***,GTEP does not require polar materials but applies to general conducting systems,and thus is also distinct from pyroelectric *** demonstrate that GTEP results from the temperature-fluctuation-induced charge redistribution,which has a deep connection to the topological geometric phase in non-Hermitian dynamics,as a consequence of the fundamental nonequilibrium thermodynamic *** findings advance our understanding of geometric phase induced multiple-physics-coupled pump effect and provide new means of thermal-electric energy harvesting.

关键词： Seebeck harvesting geometric

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A Quorum Sensing Active Matter in a Confined Geometry

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Chinese Physics Letters 2023年第10期40卷 34-38页

作者：周雨欣李云云 Fabio Marchesoni MOE Key Laboratory of Advanced Micro-Structured Materials and Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China Dipartimento di Fisica Universit`a di CamerinoI-62032 CamerinoItaly

Inspired by the problem of biofilm growth,we numerically investigate clustering in a two-dimensional suspension of active(Janus)particles of finite size confined in a circular *** dynamics is regulated by a non-reciprocal mechanism that causes them to switch from active to passive above a certain threshold of the perceived near-neighbor density(quorum sensing).A variety of cluster phases,i.e.,glassy,solid(hexatic)and liquid,are observed,depending on the particle dynamics at the boundary,the quorum sensing range,and the level of noise.

关键词： Active glassy reciprocal

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Fast evaluating phonon life time and thermal conductivity determined by Grüneisen parameter and phase space size of three-phonon scattering

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Frontiers of physics 2025年第1期20卷 83-91页

作者： Yi Wang Shenshen Yan Xi Wu Jie Ren Center for Phononics and Thermal Energy Science China-EU Joint Lab on NanophononicsShanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Science and EngineeringTongji UniversityShanghai 200092China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 200092China

Efficiently and fast seeking specific lattices with targeted phonon thermal conductivityκ_(L)plays an important role in the thermal design and thermal management of *** to efficiently and accurately evaluate the phonon lifetime determined by anharmonicity becomes a critical bottleneck when high-throughput ***,we propose a method of fast evaluating three-phonon scattering induced lifetime based on the many-body theory of phonon *** the high temperature limit,the phonon scattering rate is simply determined by the product of only two anharmonic parameters:the square of Grüneisen parameter and the phase space size of three-phonon scattering,both of which can be quickly derived from the harmonic phonon *** demonstrate the effectiveness of the method in high-throughput evaluatingκ_(L)the in firstprinciples calculation,which exhibits a good consistence with our collected experimental *** method shows promising application potential in exploring material screening of the targetedκ_(L),which by improving the ability of characterizing phonon anharmonicity will further enhance the performanceκ_(L)of prediction.

关键词： many-body theory thermal conductivity anharmonic properties three-phonon scattering first-principles calculation highthroughput calculations

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Energy-distributable waterborne acoustic launcher for directional sensing

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Chinese Physics B 2023年第12期32卷 391-396页

作者：杨天高文婷范世达任捷杨天智 School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Center for Phononics and Thermal Energy Science Shanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Sciences and EngineeringTongji UniversityShanghai 200092China

Highly directional launch and intensity adjustment of underwater acoustic signals are crucial in many areas such as abyssal navigation,underwater signal communication,and detection for marine *** by the phenomenon that aquatic animals like dolphins detect and track prey with high resolution,we propose an energy-distributable directional sensing strategy which can achieve parallel needle-like transmitting sound beams with adjustable energy based on out-coupling valley-polarized edge *** acoustic spin angular momentum and energy flow distribution at different interfaces inside the phononic crystal are provided and they show tight ***,a sound beam with a width of 20°and an acoustic intensity enhancement factor≈6.6 are observed in the far *** an application,we show that this device can be used as an acoustic energy *** communication pattern with excellent functionalities and performance provides a desirable idea for high-energy-level directional collimated underwater sensing and underwater acoustic energy distribution.

关键词： underwater sound acoustic sensing and acquisition metamaterials

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Designing radiative cooling metamaterials for passive thermal management by particle swarm optimization

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Chinese Physics B 2023年第5期32卷 37-42页

作者：闫申申刘岩王子兰晓华汪毅任捷 Center for Phononics and Thermal Energy Science China-EU Joint Laboratory on NanophononicsShanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Science and EngineeringTongji UniversityShanghai 200092China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 200092China

The passive radiative cooling technology shows a great potential application on reducing the enormous global energy *** multilayer metamaterials could enhance the radiative cooling ***,it is a challenge to design the radiative *** this work,based on the particle swarm optimization(PSO)evolutionary algorithm,we develop an intelligent workflow in designing photonic radiative cooling ***,we design two 10-layer SiO_(2) radiative coolers doped by cylindrical MgF_(2) or air impurities,possessing high emissivity within the selective(8–13μm)and broadband(8–25μm)atmospheric transparency windows,*** two kinds of coolers demonstrate power density as high as 119 W/m^(2) and 132 W/m^(2) at the room temperature(300 K).Our scheme does not rely on the usage of special materials,forming high-performing metamaterials with conventional poor-performing *** significant improvement of the emission spectra proves the effectiveness of our inverse design algorithm in boosting the discovery of high-performing functional metamaterials.

关键词： photonic devices passive radiative cooling metamaterial optimization algorithm

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In situ Simulation of Thermal Reality

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Research 2024年第2期2023卷 685-690页

作者： Peng Jin Jinrong Liu Fubao Yang Fabio Marchesoni Jian-Hua Jiang Jiping Huang Department of Physics State Key Laboratory of Surface Physicsand Key Laboratory of Micro and Nano Photonic Structures(MOE)Fudan UniversityShanghai 200438China Center for Phononics and Thermal Energy Science Shanghai Key Laboratory of Special Artificial Microstructure Materials and TechnologySchool of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Physics University of CamerinoCamerino 62032Italy Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China

Simulated reality encompasses virtual,augmented,and mixed realities梕ach characterized by different degrees of truthfulness in the visual perception:"all false","coexistence of true and false,"and"difficult distinction between true and false,"*** all these technologies,however,the temperature rendering of virtual objects is still an unsolved ***,the lack of thermal tactile functions substantially reduces the quality of the user's real-experience *** address this challenge,we propose theoretically and realize experimentally a technological platform for the in situ simulation of thermal *** this purpose,we design a thermal metadevice consisting of a reconfigurable array of radiating units,capable of generating the thermal image of any virtual object,and thus rendering it in situ together with its thermal *** is a substantial technological advance,which opens up new possibilities for simulated reality and its applications to human activities.

关键词： false rendering signature

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3D flame-retardant skeleton reinforced polymer electrolyte for solid-state dendrite-free lithium metal batteries

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Journal of Energy Chemistry 2022年第8期31卷 174-181,I0006页

作者： Xiaojiao Zheng Jiawei Wu Jing Chen Xiaodong Wang Zhenglong Yang Shanghai Key Laboratory of D&A for Metal-Functional Materials School of Materials Science and EngineeringTongji UniversityShanghai 200092China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology&School of Physics Science and Engineering Tongji UniversityShanghai 200092China

For solid polymer electrolytes(SPEs),improving their mechanical and electrochemical properties is the key to obtaining batteries with higher safety and higher energy ***,a novel synergistic strategy proposed is preparing a 3D flame-retardant skeleton(3DPA)and adding nano-multifunctional fillers(Li-ILs@ZIF-8).In addition to providing mechanical support for the polyethylene oxide(PEO)matrix,3DPA also has further contributed to the system’s flame retardancy and further improved the ***,the electrochemical performance is fully guaranteed by rigid Li-ILs@ZIF-8,which provides fast migration channels forLi^(+),reduces the crystallinity of PEO and effectively inhibits lithium *** limiting oxygen index of the optimal sample(PL3Z/PA)is as high as 20.5%,and the ionic conductivity reaches 2.89×10^(-4) and 0.91×10^(-3) S cm^(-1) at 25 and 55°C,*** assembled Li|PL3Z/PA|Li battery can be cycled stably for more than 1000 h at a current density of 0.1 m A cm^(-2) without short circuit being pierced by lithium *** specific capacity of the LFP|PL3Z/PA|Li battery was 160.5 m Ah g^(-1) under a current density of 0.5 C,and the capacity retention rate was 90.0%after 300 cycles.

关键词： Solid polymer electrolytes Polyethylene oxide 3D flame-retardant skeleton Multifunctional fillers Synergistic effect

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Fabrication and performance of 3C–SiC photocathode materials for water splitting

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Progress in Natural Science:materials International 2024年第1期34卷 12-25页

作者： Haojie Li Zidong Zhou Xiuhua Cao Zhilan Du Wei Yan Jiawen Li Altaf Mujear Yinfei Shao Jing Chen Xuesong Wang Guohua Gao Yuxin Zhang Yongfeng Mei Zhihao Bao Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and Engineering Tongji University College of Materials Science and Engineering Chongqing University Yiwu Research Institute of Fudan University Department of Materials Science&State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University International Institute of Intelligent Nanorobots and Nanosystems Fudan University

Since high-performance catalysts play a vital role in energy conversion efficiency during photocatalytic hydrogen evolution(PHE), they are indispensable for clean energy production and environmental sustainability. Though a lot of semiconductor materials have been developed as catalysts for PHE by water splitting, many of them(e.g.,oxides, sulfides, and phosphides) suffer from low stability and unsuitable energy band structures. In contrast, the energy band structure of cubic silicon carbide(3C–SiC) ideally spans the water redox potential, and its suitable band gap(2.36 eV) can effectively utilize most of the available sunlight. Therefore, 3C–SiC exhibits unique advantages in PHE. In this review, to aid researchers in preparing an appropriate photocatalytic material for hydrogen evolution, a thorough examination of the preparation methods of 3C–SiC is offered. The modification methods of 3C–SiC and their recent advances in enhancing its efficiency of PHE are summarized. They include morphology control, heterostructure construction, doping, and loaded co-catalysts. A deep discussion of the relationship among the photocatalytic effect, its energy band structure, and modification methods of 3C–SiC is presented. Finally, the benefits and drawbacks of various modifications for PHE are emphasized, as is the outlook for future research.

关键词： Cubic silicon carbide Photocatalytic hydrogen evolution Photocatalytic mechanism Preparation methods Improving strategies

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