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Tribology field news
发布时间：2023-09-02 16:15:00
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I. Discipline exploration
Triboelectric nanogenerator (TENG for short) is a new energy collection technology that collects environmental mechanical energy to generate electric energy by combining the principle of triboelectric effect and electrostatic induction. It generates transfer electrons and potential difference through the friction interaction of nanomaterials. The process of converting mechanical energy into electrical energy.
Since its creation in 2012, TENG has developed four basic operating modes: vertical contact-separation mode, horizontal sliding mode, single electrode mode, and independent layer mode. At present, significant application progress has been made in micro-nano energy fields such as electronic skin and wearable flexible electronics, self-driven sensing fields such as Internet of Things sensing, human-computer interaction, environmental monitoring and biosensing, and blue energy fields such as ocean wave energy collection and wind energy collection.
Second, important paper recommendation
1. Professor Ma Tianbao, Dr. Cui Wenyan, Dr. Chen Hongzhan, Dr. Zhao Jianxun, Dr. Ma Quansheng and Dr. Xu Qiang from the Department of Mechanical Engineering of Tsinghua University and the National Key Laboratory of Interface Science and Technology of High-end Equipment published their articles in the SCI core Journal International Journal of Extreme Manufacturing Manufacturing, IJEM) co-presented "Research Progress in Low Temperature Tribology: This paper systematically introduces the existing low-temperature friction test methods and equipment, deeply discusses the physical/chemical mechanism of low-temperature solid lubrication and friction, and introduces the latest application progress of low-temperature solid lubrication in aerospace, aviation and other fields, as well as self-made experimental equipment for materials or bearings low-temperature friction test and in-situ observation.
2. Qin Chenxi PhD student, Ma Yanfei Assistant Researcher, He Ximin Professor and Zhou Feng Researcher of State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Proceedings of the National Academy of Sciences of the United States States of America (PNAS) (10.1073/ PNAS.2301364120) co-published the research paper "Water-assisted strong underwater adhesion via. interfacial water removal and self-adaptive gelation ". In this paper, a multi-scale depth dehydrating mechanism based on physicochemical coupling was proposed, and based on this mechanism, an underwater adaptive reinforced adhesive (SLU-adhesive) was developed to achieve strong underwater bonding (1600 kPa) in harsh environments (high/low pH, seawater). It has been verified in the fields of underwater sand fixation, underwater repair and adhesion failure detection.
3. The electrochemical Environmental Catalysis Team led by Lu Zhiyi, Laboratory of Hydrogen Energy, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, cooperated with the carbon-based film and coating technology team led by Wang Aiying, Key Laboratory of Marine New Materials and Applied Technology, Chinese Academy of Sciences. Start with "Concerning the stability of seawater electrolysis: a corrosion mechanism study of halide on Ni-based Anodes "was published in the internationally renowned journal Nature Communications (DOI: 10.1038/ s41467-023-40563-9). This paper introduces the new progress made by the team in studying the mechanism of anodic corrosion in seawater electrolysis. The corrosion resistance of nickel substrate in BR-containing solution is worse than that of Cl-containing solution. Cl has a lower diffusion barrier and is more likely to diffuse into the passivation layer of the substrate for corrosion, while Br reacts with the passivation layer with lower free energy, which tends to be multi-site rapid corrosion. The research shows that in addition to Cl corrosion resistance, the design of Br corrosion resistance anode is more important for the practical application of seawater electrolysis.
Triboelectric nanogenerator (TENG for short) is a new energy collection technology that collects environmental mechanical energy to generate electric energy by combining the principle of triboelectric effect and electrostatic induction. It generates transfer electrons and potential difference through the friction interaction of nanomaterials. The process of converting mechanical energy into electrical energy.
Since its creation in 2012, TENG has developed four basic operating modes: vertical contact-separation mode, horizontal sliding mode, single electrode mode, and independent layer mode. At present, significant application progress has been made in micro-nano energy fields such as electronic skin and wearable flexible electronics, self-driven sensing fields such as Internet of Things sensing, human-computer interaction, environmental monitoring and biosensing, and blue energy fields such as ocean wave energy collection and wind energy collection.
Second, important paper recommendation
1. Professor Ma Tianbao, Dr. Cui Wenyan, Dr. Chen Hongzhan, Dr. Zhao Jianxun, Dr. Ma Quansheng and Dr. Xu Qiang from the Department of Mechanical Engineering of Tsinghua University and the National Key Laboratory of Interface Science and Technology of High-end Equipment published their articles in the SCI core Journal International Journal of Extreme Manufacturing Manufacturing, IJEM) co-presented "Research Progress in Low Temperature Tribology: This paper systematically introduces the existing low-temperature friction test methods and equipment, deeply discusses the physical/chemical mechanism of low-temperature solid lubrication and friction, and introduces the latest application progress of low-temperature solid lubrication in aerospace, aviation and other fields, as well as self-made experimental equipment for materials or bearings low-temperature friction test and in-situ observation.
2. Qin Chenxi PhD student, Ma Yanfei Assistant Researcher, He Ximin Professor and Zhou Feng Researcher of State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Proceedings of the National Academy of Sciences of the United States States of America (PNAS) (10.1073/ PNAS.2301364120) co-published the research paper "Water-assisted strong underwater adhesion via. interfacial water removal and self-adaptive gelation ". In this paper, a multi-scale depth dehydrating mechanism based on physicochemical coupling was proposed, and based on this mechanism, an underwater adaptive reinforced adhesive (SLU-adhesive) was developed to achieve strong underwater bonding (1600 kPa) in harsh environments (high/low pH, seawater). It has been verified in the fields of underwater sand fixation, underwater repair and adhesion failure detection.
3. The electrochemical Environmental Catalysis Team led by Lu Zhiyi, Laboratory of Hydrogen Energy, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, cooperated with the carbon-based film and coating technology team led by Wang Aiying, Key Laboratory of Marine New Materials and Applied Technology, Chinese Academy of Sciences. Start with "Concerning the stability of seawater electrolysis: a corrosion mechanism study of halide on Ni-based Anodes "was published in the internationally renowned journal Nature Communications (DOI: 10.1038/ s41467-023-40563-9). This paper introduces the new progress made by the team in studying the mechanism of anodic corrosion in seawater electrolysis. The corrosion resistance of nickel substrate in BR-containing solution is worse than that of Cl-containing solution. Cl has a lower diffusion barrier and is more likely to diffuse into the passivation layer of the substrate for corrosion, while Br reacts with the passivation layer with lower free energy, which tends to be multi-site rapid corrosion. The research shows that in addition to Cl corrosion resistance, the design of Br corrosion resistance anode is more important for the practical application of seawater electrolysis.
