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Triboelectric nanogenerator hybrid array driven by multiform natural energies and its applications in self-powered cathodic protection

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Science China(Technological Sciences) 2024年第3期67卷 878-890页

作者： SUN Weixiang YANG Di LUO Ning LI Hao wang daoai School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratoryof Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China

In view of the increasing energy shortage and environmental pollution, the collection of friction charges to achieve the conversion of various natural energies and provide in-situ cathodic protection for metals is a significant challenge. Here, we designed a dual device-structure TENG composite array with the triboelectric layer of linear siloxane-modified polyurethane(PU) coating. This array could achieve a comprehensive collection for multiple forms of nature energy and cathodic protection of metals in multi-weather conditions. For one thing, the wave-mode TENG based on tanker structure could collect wave energy and showed the output performance with a short-circuit current of 15.5 μA. For another thing, the droplet-mode TENG based on arc-shaped surface structure could collect raindrop kinetic energy and showed the output performance with a short-circuit current of 16.3 μA. Notably, the parallel array of wave-mode TENG(W-TENG) and droplet-mode TENG(D-TENG) could simultaneously collect wave energy and raindrop kinetic energy, which showed a short-circuit current of 30.7 μA. Besides, a selfpowered a cathodic protection system powered by the dual structure TENG array is assembled and the open-circuit potential drop of the carbon steel connected with the TENG array is about 450 mV. Compared with cathodic protection system powered by single structure TENG, the composite array could provide more effective corrosion resistance for marine equipment in rainy weather. Due to the characteristic for comprehensive collection of nature energy, the anti-corrosion system supplied by TENG parallel array possesses great application potential in the all-weather corrosion protection of metal machinery under complex marine conditions.

关键词： triboelectric nanogenerator hybrid structure array siloxane-modified polyurethane cathodic protection

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A new TiO_(2) nanorods/MoTe_(2) quantum dots/Al_(2)O_(3) composite photocatalyst for efficient photoelectrochemical water splitting under simulated sunlight

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Frontiers of Materials Science 2024年第2期18卷 61-74页

作者： Jie Meng Hongmei Liu Sainan Zhang Baogui Ye Min Feng daoai wang School of Chemistry and Chemical Engineering Lanzhou Jiaotong UniversityLanzhou 730000China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Centerof Resource Chemistry and New Materials Qingdao 266100China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 265503China

The solar-to-hydrogen conversion using the photoelectrochemical(PEC)method is a practical approach to producing clean ***,it relies on the availability of photocatalyst *** this work,a novel photocatalyst comprising molybdenum telluride quantum dots(MoTe_(2) QDs)-modified titanium dioxide nanorods(TiO_(2) NRs)was prepared for the enhancement of the PEC water splitting performance after combination with a Al_(2)O_(3) layer using the atomic layer deposition(ALD)***_(2) QDs were initially prepared,and then they were loaded onto TiO_(2) NRs using a warm water bath-based heating *** a layer of Al_(2)O_(3) was deposited onto resulted TiO_(2) NRs/MoTe_(2) QDs,the composite TiO_(2) NRs/MoTe_(2) QDs/Al_(2)O_(3) was finally *** simulated sunlight(100 mW·cm^(-2)),such a composite exhibited a maximum photocurrent density of 2.25 mA·cm^(-2) at 1.23 V(versus RHE)and an incident photon-to-electron conversion efficiency of 69.88%at 380 nm,which are 4.33 and 6.66 times those of pure TiO_(2) NRs,***,the composite photocatalyst fabricated in this work may have promising application in the field of PEC water splitting,solarcells andotherphotocatalyticdevices.

关键词： MoTe_(2)quantum dot TiO_(2)nanorod Al_(2)O_(3) atomic layer deposition photoelectrochemistry

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Nickel phosphorous trisulfide:A ternary 2D material with an ultra-low coefficient of friction

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Friction 2024年第10期12卷 2313-2324,F0004页

作者： Haoyu DENG Tongtong YU Changhe DU Ruilin SHEN Yongkang ZHAO Xinjian HE Yange FENG Liqiang ZHANG daoai wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China

Ultra-low friction is crucial for the anti-friction,anti-wear,and long-life operation of ***,very few two-dimensional materials can achieve ultra-low friction,and they have some limitations in their ***,exploring novel materials with ultra-low friction properties is greatly *** emergence of ternary two-dimensional materials has opened new opportunities for nanoscale ultra-low *** study introduced nickel phosphorous trisulfide(NiPS3,referred to as NPS),a novel two-dimensional ternary material capable of achieving ultralow friction in a vacuum,into the large nanotribology ***-size and high-quality NPS crystals with up to 14 mm×6 mm×0.3 mm dimensions were grown using the chemical vapor transport *** NPS nanosheets were obtained using mechanical *** dependence of the NPS nanotribology on layer,velocity,and angle was systematically investigated using lateral force ***,the coefficient of friction(COF)of NPS with multilayers was decreased to about 0.0045 under 0.005 Pa vacuum condition(with load up to 767.8 nN),achieving the ultra-low friction *** analysis of the frictional dissipation energy and adhesive forces showed that NPS with multilayers had minimum frictional dissipation energy and adhesive forces since the interlayer interactions were weak and the meniscus force was excluded under vacuum *** study on the nanoscale friction of a ternary two-dimensional material lays a foundation for exploring the nanoscale friction and friction origin of other two-dimensional materials in the future.

关键词： two-dimensional(2D)materials NiPS3 ultra-low friction nanotribology

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基于传统滑雪板的可穿戴式雪上摩擦力在线测量装置研究

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摩擦学学报（中英文） 2024年第1期44卷 97-106页

作者：于泽尧刘莹刘钰博万洋吴杨王道爱周峰南昌大学先进制造学院江西南昌330031 中国科学院兰州化学物理研究所固体润滑国家重点实验室甘肃兰州730000 烟台先进材料与绿色制造山东省实验室山东烟台264006 青岛市资源化学与新材料研究中心山东青岛266100

竞技滑雪运动中雪上摩擦阻力影响运动员比赛成绩,而雪上摩擦影响因素众多,雪上摩擦阻力评测一直是冰雪竞技运动中的一大挑战.本文中设计了1种基于传统滑雪板的可穿戴式雪上摩擦力在线测量装置,将多个三分量传感器合理布置在传统滑雪板上... 详细信息

竞技滑雪运动中雪上摩擦阻力影响运动员比赛成绩,而雪上摩擦影响因素众多,雪上摩擦阻力评测一直是冰雪竞技运动中的一大挑战.本文中设计了1种基于传统滑雪板的可穿戴式雪上摩擦力在线测量装置,将多个三分量传感器合理布置在传统滑雪板上,通过有线连接的方式,结合数据采集卡,对3个分量的力信号进行监测、采集和保存,并通过终端电脑实时反馈力信号变化.实验室静态测试中,该装置具有稳定的力学信号输出,并给出准确的摩擦系数测试结果.在模拟雪场测试时,其能够准确地评估不同雪上减阻蜡的润滑性能及其耐磨性能,还能够监测自由式滑雪运动中的犁式制动和犁式转弯等常规技术动作.该装置输出的力信号具有高精度和高灵敏度特性,为滑雪运动中雪上减阻蜡的性能评价、运动员施力动作监测等给出了1种可行方案.

关键词：滑雪板摩擦力在线测量装置三分量力传感器雪上摩擦力雪上减阻蜡性能评价动作监测

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Hydrophobic MAO/FSG coating based TENG for self-healable energy harvesting and self-powered cathodic protection

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Science China(Technological Sciences) 2022年第3期65卷 726-734页

作者： LIU YuPeng SUN WeiXiang LI TingHua wang daoai State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Technical Center of China Tobacco Yunnan Industrial Co. Ltd.Kunming 650231China

An organic/inorganic hybrid coating with self-healable hydrophobicity is prepared as triboelectrical layer by micro-arc oxidation(MAO)and fluorinated sol-gel(FSG)*** MAO/FSG hybrid coating-based TENG(MF-TENG)has a current output of31μA and voltage output of 870 V,which is eight times that of the MAO based *** with organic coating,the organic/inorganic hybrid coating has good wear *** the fluorine composition on the surface of the coating is damaged,the self-healing hydrophobicity and electrical output are achieved by transferring loaded perfluorosilane to the damaged *** fluorinated sol-gel coating is hydrophobic,which ensures that the coating has good corrosion ***,the electricity generated in triboelectrification could improve the anti-corrosion performance by cathodic *** on the anti-corrosion,anti-wear and self-healing properties,the MF-TENG has potential applicability in the field of energy collection,energy supply,and corrosion protection.

关键词： triboelectric nanogenerator organic/inorganic hybrid coating energy collection corrosion resistance self-healing property

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Triboelectrification based on double-layered polyaniline nanofibers for self-powered cathodic protection driven by wind

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Nano Research 2018年第4期11卷 1873-1882页

作者： Siwen Cui Youbin Zheng Jun Liang daoai wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China

Polyaniline nanofibers （PANI NFs） are introduced to construct a wind-driven triboelectric nanogenerator （TENG） as a new power source for self-powered cathodic protection. PANI NFs serve as a friction layer to generate charges by harvesting wind energy as well as a conducting layer to transfer charges in TENG. A PANI NFs-based TENG exhibits a high output performance with a maximum output voltage of 375 V, short current circuit of 248 μA, and corresponding power of 14.5 mW under a wind speed of 15 m/s. Additionally, a self-powered anticorrosion system is constructed by using a PANI-based TENG as the power source. The immersion experiment and electrochemical measurements demonstrate that carbon steel coupled with the wind-driven TENG is effectively protected with an evident open circuit potential drop and negative shift in the corrosion potential. The smart self-powered device is promising in terms of applications to protect metals from corrosion by utilizing wind energy in ambient conditions.

关键词： polyaniline triboelectric nanogenerator wind-driven self-powered cathodic protection

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A new strategy for tube leakage and blockage detection using bubble motion-based solid-liquid triboelectric sensor

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Science China(Technological Sciences) 2022年第2期65卷 282-292页

作者： ZHANG XiaoLong DONG Yang XU Xiang QIN HongLing wang daoai Hubei Key Laboratory of Hydroelectric Machinery Design&Maintenance China Three Gorges UniversityYichang 443002China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China

Exploring a rapid, reliable, and practical means to detect blockages and leakages in liquid pipelines and accurately locate their positions is of great importance in practical engineering applications. Here, we report a bubble motion-based triboelectric sensor(BM-TES) for detecting and locating the blockages and leaks inside a plastic tube. This simple-designed, environment-friendly,non-damaging sensor is composed of several ring-shaped Cu electrodes distributed on a polytetrafluoroethylene tube. The selfpowered movement of the bubble under the action of buoyancy makes the inner wall of the tube change from the original solidliquid phase to the gas-solid-liquid phase, which results in a short-term contact and separation between the liquid and the *** on the fractional triboelectric effect of the liquid-solid contact, an obvious real-time stable voltage peak will be generated where the detection bubble passes. The obvious peaks of the open-circuit voltage with respect to time correspond with the electrode distribution. Then, the peaks can be utilized as a robust and sensitive indicator for detecting blockage and leakage, as the number of obvious peaks of the open-circuit voltage is directly related to the blockage and leakage location. The blockage and leakage in a fluid tube were successfully detected using the BM-TES with an accuracy of 10 cm. In addition, the BE-TES was able to detect the water flow velocity in the pipe. The experimental results showed that BM-TES can provide a new strategy and method for liquid tube monitoring and has great potential application value in related fields.

关键词： solid-liquid triboelectric self-powered bubble blockage leakage

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Hydrophobic organic coating based water–solid TENG for water-flow energy collection and self-powered cathodic protection

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Frontiers of Materials Science 2021年第4期15卷 601-610页

作者： Yupeng LIU Guoyun SUN Ying LIU Weixiang SUN daoai wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266100China

Water-solid triboelectric nanogenerators(TENGs),as new energy collection devices,have attracted increasing attention in ocean energy harvesting and selfpowered *** acid(PAA)coating,usually used on the surface of marine equipment,has the property of anti-aging and anti-wear but limits triboelectrical output when used with *** this paper,polyacrylic acid coating was modified with fluorinated polyacrylate resin(F-PAA)to increase its triboelectrical output,by 6 times,and also to increase its anti-corrosion *** addition,the corrosion resistance property can be further enhanced by cathodic protection using the electrical output generated by the water-flow triboelectrical energy transfer *** their easy fabrication,water-flow energy harvesting,and corrosion resistance,PAA/F-PAA coating-based TENGs have promising applications in river and ocean energy collection and corrosion protection.

关键词： TENG hydrophobic coating energy collection anticorrosion cathodic protection

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New starch capsules with antistatic,anti-wear and superlubricity properties

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Frontiers of Materials Science 2021年第2期15卷 266-279页

作者： Nannan wang Youbin ZHENG Yange FENG Liqiang ZHANG Min FENG Xiaojuan LI daoai wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China

Adsorption of drug powder is caused by triboelectrification on the surface of starch capsule during filling ***,high wear rate and poor water lubricity also hinder the further practical applications of traditional starch *** solve these problems,a glycerol-modified starch capsule with perfect anti-triboelec-trification and enhanced lubrication performance was *** bond between glycerol and starch molecules could reduce the bound water content on the capsule surface and thus realizes *** adding glycerol,a three-tier structure composed of starch-glycerol-water is formed through hydrogen bonding on the surface of the starch film,which has been proven to be favorable for lubrication *** 5% glycerol is added,the short-circuit current(I_(sc))of starch-based triboelectric nanogenerator(TENG)is reduced by 86%,and the wear volume of the starch film is reduced by 89%.Underwater lubrication condition,the lubrication performance of the starch-glycerol film can reach the super lubricated level with a friction coefficient of about *** work provides a new route to obtain modified starch capsules with improved anti-triboelectrification property,reduced wear rate and superlubricity property.

关键词： starch capsules hydrogen bonds anti-triboelectrification anti-wear superlubricity

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Nanotribology of SiP nanosheets: Effect of thickness and sliding velocity

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Friction 2022年第12期10卷 2033-2044页

作者： Zishuai WU Tongtong YU Wei WU Jianxi LIU Zhinan ZHANG daoai wang Weimin LIU Center of Advanced Lubrication and Seal Materials School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China

Two-dimensional compounds combining group IV A element and group V A element were determined to integrate the advantages of the two *** a typical 2D group IV–V material,SiP has been widely used in photodetection and photocatalysis due to its high carrier mobility,appropriate bandgap,high thermal stability,and low interlayer cleavage ***,its adhesion and friction properties have not been extensively ***,large-size and high-quality SiP crystals were obtained by using the flux *** nanosheets were prepared by using mechanical *** layer-dependent and velocity-dependent nanotribological properties of SiP nanosheets were systematically *** results indicate the friction force of SiP nanosheets decreases with the increase in layer number and reaches saturation after five *** coefficient of friction of multilayer SiP is *** mean friction force,frictional vibrations,and the friction strengthening effect can be affected by sliding ***,the mean friction force increases with the logarithm of sliding velocity at nm/s scale,which is dominated by atomic *** influence of frequency on frictional vibration is greater than speed due to the different influences on the change in contact *** friction strengthening saturation distance increases with the increase in speed for thick SiP *** results provide an approach for manipulating the nanofriction properties of SiP and serve as a theoretical basis for the application of SiP in solid lubrication and microelectromechanical systems.

关键词： SiP nanosheet 2D material atomic force microscopy(AFM) nanotribology

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