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Integrative square-grid triboelectric nanogenerator as a vibrational energy harvester and impulsive force sensor

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Nano Research 2018年第2期11卷 1157-1164页

作者： Chuan He Weijun Zhu Guang Qin Gu Tao Jiang Liang Xu bao Dong Chen chang bao han Dichen Li Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing China CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology (NCNST) Beijing China State Key Laboratory of Manufacturing Systems Engineering Xi’an Jiaotong University Xi’an China Collaborative Innovation Center of High-End Manufacturing Equipment Xi’an Jiaotong University Xi’an China University of Chinese Academy of Sciences Beijing China School of Materials Science and Engineering Georgia Institute of Technology Atlanta USA

A square-grid triboelectric nanogenerator （SG-TENG） is demonstrated for harvesting vibrational energy and sensing impulsive forces. Each square of the three-dimensional （3D）-printed square grid is filled with an aluminum （A1） ball. The grid structure allows the SG-TENG to harvest vibrational energy over a broad bandwidth and operate at different vibrational angles. The most striking feature of the SG-TENG is its ability of being scaled and integrated. After connecting two SG-TENGs in parallel, the open-circuit voltage and short-circuit current are significantly increased over the full vibrational frequency range. Being integrated with a table tennis racket, the SG-TENG can harvest the vibrational energy from hitting a ping pong ball using the racket, where a direct hit by the racket generates an average output voltage of 10,9 ~ 0.6 V and an average output current of 0.09 ± 0.02 boA. Moreover, the SG-TENG integrated into a focus mitt can be used in various combat sports, such as boxing and taekwondo, to monitor the frequency and magnitude of the punches or kicks from boxers and other practitioners. The collected data allow athletes to monitor their status and improve their performance skills. This work demonstrates the enormous potential of the SG-TENG in energy harvesting and sensing applications.

关键词： square grid triboelectric nanogenerator vibration sensor

A triboelectric nanogenerator based on a spiral rotating shaft for efficient marine energy harvesting of the hydrostatic pressure differential

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Materials Reports(Energy) 2024年第3期4卷 69-76页

作者： Xuemei Song Yuan Chao Pan chang bao han chang Xin Liu Yaxiaer Yalikun Hui Yan Yang Yang Key Laboratory of Advanced Functional Materials(Beijing University of Technology) Ministry of EducationBeijing Key Lab of Microstructure and Property of Advanced MaterialsBeijing University of TechnologyBeijing100124PR China Institute of Deep-Sea Science and Engineering Chinese Academy of SciencesSanya572000PR China Division of Materials Science Nara Institute of Science and Technology8916-5 Takayama-choIkomaNara630-0192Japan

Equipment used in underwater sensing and exploration typically relies on cables or batteries for energy supply,resulting in a limited and inconvenient energy supply and marine environmental pollution that hinder the sustainable development of distributed ocean sensing ***,we design a deep-sea differential-pressure triboelectric nanogenerator(DP-TENG)based on a spiral shaft drive using modified polymer materials to harness the hydrostatic pressure gradient energy at varying ocean depths to power underwater *** spiral shaft structure converts a single compression into multiple rotations of the TENG rotor,achieving efficient conversion of differential pressure *** multi-pair electrode design enables the DP-TENG to generate a peak current of 61.7μA,the instantaneous current density can reach 0.69μA cm^(-2),and the output performance can be improved by optimizing the spiral angle of the *** DP-TENG can charge a 33μF capacitor to 17.5 V within five working *** can also power a digital calculator and light up 116 commercial power light-emitting diodes,demonstrating excellent output *** its simple structure,low production cost,and small form factor,the DP-TENG can be seamlessly integrated with underwater *** results hold broad prospects for underwater blue energy harvesting and are expected to contribute to the development of self-powered equipment toward emerging“smart ocean”and blue economy applications.

关键词： Triboelectric nanogenerators Blue energy Energy harvesting Differential pressure energy Self-power sensor

Triboelectrification induced UV emission from plasmon discharge

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Nano Research 2015年第1期8卷 219-226页

作者： chang bao han Chi Zhang Jingjing Tian Xiaohui Li Limin Zhang Zhou Li Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China 'School of Material Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA

UV is a high-energy electromagnetic radiation that has been widely used in industrial production and the scientific research domain. In this work, a deep UV light emission was obtained using triboelectrification induced plasma discharge without any extra power supply. By a mechanical friction between polymer and quartz glass, the triboelectric charges cause a changing electric field, which may bring plasma discharge of low pressure gas （Ar-Hg） and give out 253.7 nm irradiation. The UV light caused by continuous friction can excite a trichromatic phosphor and afford a bright white light emission. A UV sterilization experiment shows that -98% of Escherichia coil can be killed in 30 min by UV irradiation, which reveals that a self-powered sterilization apparatus with good sterilization effect was fabricated. This work provides a novel design to fabricate a self- powered UV light emitting device using low-frequency mechanical friction and realizes the coupling of triboelectrificafion and plasma luminescence, which may further expand the application of UV light in special circumstances.

关键词： triboelectrification light emitting plasma discharge UV light sterilization

Dual-functional MnS_(2)/MnO_(2) heterostructure catalyst for efficient acidic hydrogen evolution reaction and assisted degradation of organic wastewater

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Journal of Energy Chemistry 2023年第12期87卷 215-224,I0007页

作者： Wen Kang Zhao Zi Qiang Ma Jia Yu Zheng chang bao han Kai Ling Zhou Ming Yang Hao De Cai Fang Yi Xia Hui Yan The Key Laboratory of Advanced Functional Materials Ministry of Education of ChinaFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China

The design and synthesis of non-precious metal dual-functional electrocatalysts through the modulation of electronic structure are important for the development of renewable hydrogen ***,MnS_(2)/MnO_(2)-CC heterostructure dual-functional catalysts with ultrathin nanosheets were prepared by a twostep electrodeposition method for efficient acidic hydrogen evolution reaction(HER) and degradation of organic wastewater(such as methylene blue(MB)).The electronic structure of Mn atoms at the MnS_(2)/MnO_(2)-CC heterostructure interface is reconfigured under the joint action of S and O *** calculations show that the Mn d-band electron distribution in MnS_(2)/MnO_(2)-CC catalyst has higher occupied states near the Fermi level compared to the MnO_(2) and MnS_(2) catalysts,which indicates that MnS_(2)/MnO_(2)-CC catalyst has better electron transfer capability and catalytic *** MnS_(2)/MnO_(2)-CC catalysts require overpotential of only 66 and 116 mV to reach current density of 10 and 100 mA cm^(-2)in MB/H_(2)SO_(4) *** MnS_(2)/MnO_(2)-CC catalyst also has a low Tafel slope(26.72 mV dec^(-1)) and excellent stability(the performance does not decay after 20 h of testing).In addition,the MB removal efficiency of the MnS_(2)/MnO_(2)-CC catalyst with a better kinetic rate(0.0226) can reach 97.76%,which is much higher than that of the MnO_(x)-CC catalyst(72.10%).This strategy provides a new way to develop efficient and stable non-precious metal dual-functional electrocatalysts for HER and organic wastewater degradation.

关键词： Hydrogen evolution reaction(HER) Dual-functional electrocatalysts Heterostructure Catalytic activity Degradation of organic wastewater

Triboelectric nanogenerator enhanced multilayered antibacterial nanofiber air filters for efficient removal of ultrafine particulate matter

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Nano Research 2018年第8期11卷 4090-4101页

作者： Guang Qin Gu chang bao han Jing Jing Tian Tao Jiang Chuan He Cun Xin Lu Yu Bai Jin Hui Nie Zhou Li Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 China School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332-0245 USA Guang Oin Gu Chang Bao Han and Jing Jing Tian contributed equally to this work.

We developed a high-efficiency rotating triboelectric nanogenerator （R-TENG）- enhanced *** antibacterial polyimide （PI） nanofiber air filters for removing ultrafine particulate matter （PM） from ambient atmosphere. Compared to single- layered PI nanofiber filters, the multilayered nanofiber filter can completely remove all of the particles with diameters larger than 0.54 ffm and shows enhanced removal efficiency for smaller PM particles. After connecting with a R-TENG, the removal efficiency of the filer for ultrafine partides is further enhanced. The highest removal efficiency for ultrafine particulate matter is 94.1% at the diameter of 53.3 nm and the average removal efficiency reached 89.9%. Despite an increase in the layer number, the thickness of each individual layer of the film decreased, and hence, the total pressure drop of the filter decreased instead of increasing. Moreover, the nanofiber film exhibited high antibacterial activity because of the addition of a small amount of silver nanoparticles. This technology with zero ozone release and low pressure drop is appropriate for cleaning air, haze treatment, and bacterial control.

关键词： triboelectricnanogenerator antibacterial property electrospinnin Ag-polyimide nanofiber air filter,ultrafine particle

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高压共轨柴油机燃烧与排放的仿真计算及分析

内燃机工程 2005年第3期26卷 1-4页

作者：邵利民安士杰常汉宝海军工程大学动力工程学院武汉430033

在林慰梓直喷式柴油机准维多区燃烧模型的基础上,改进了燃油喷射模型以及碳烟的生成与氧化模型,考虑了燃烧区的区间传热和缸内工质的对流辐射传热,由此对一台高压共轨柴油机进行了仿真计算。计算与试验结果对比分析表明,改进后的燃烧与... 详细信息

在林慰梓直喷式柴油机准维多区燃烧模型的基础上,改进了燃油喷射模型以及碳烟的生成与氧化模型,考虑了燃烧区的区间传热和缸内工质的对流辐射传热,由此对一台高压共轨柴油机进行了仿真计算。计算与试验结果对比分析表明,改进后的燃烧与排放模型能够较好的反映了缸内各区的燃烧与排放情况,可以为高压共轨柴油机的设计提供理论指导。

关键词：内燃机柴油机高压共轨系统燃烧排放计算

Two two-dimensional cadmium（Ⅱ） coordination polymers with 3-amino-5-methylthio-1,2,4-triazolate ligand

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Two two-dimensional cadmium（Ⅱ） coordination polymers with...

中国化学会第七届全国结构化学学术会议

作者： Yun-Jian Li Yu-Ling Wang chang-bao han Qing-Yan Liu College of Chemistry and Chemical Engineering Jiangxi Normal University

＜正＞The triazole-based rigid heterocyclic thioamide such as 1H-1,2,4-triazole-3-thiol and4-methyl-1,2,4-triazole-3-thiol ligands based coordination polymers display interesting photoluminescent properties and various *** 3-amino-5-methlthio-1H-1,2,4-triazole（Hamstz）with five potentially donor atoms（three triazolate N,one amine N and one S atoms）can

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来源： cnki会议评论

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cnki会议

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重型直喷式柴油机多次喷射燃烧过程研究

内燃机工程 2009年第5期30卷 54-58,62页

作者：徐洪军常汉宝邵利民海军工程大学武汉430033

对重型直喷式柴油机典型多次喷射方案进行了燃烧过程计算,通过与试验结果对比,对计算过程参数进行了修正。计算结果有效反映了不同喷油速率形状、喷射脉冲的油量分配比例和喷射脉冲间隔角对燃烧放热率的影响规律。对多种计算结果进行对... 详细信息

对重型直喷式柴油机典型多次喷射方案进行了燃烧过程计算,通过与试验结果对比,对计算过程参数进行了修正。计算结果有效反映了不同喷油速率形状、喷射脉冲的油量分配比例和喷射脉冲间隔角对燃烧放热率的影响规律。对多种计算结果进行对比分析,以提高柴油机的平均有效压力和降低压力升高率为目标,总结出多次喷射模式下的喷油规律优化方案。

关键词：内燃机重型直喷柴油机多次喷射燃烧模拟

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柴油机主辅双进气道系统性能优化研究

内燃机工程 2007年第6期28卷 45-48页

作者：常汉宝秦建文丁家松王新昌海军工程大学船舶与动力学院武汉430033 海军驻711研究所军代表室河南柴油机厂军代表室

对大功率柴油机采用主辅双进气道系统改善低负荷工况下的进气涡流进行理论分析和试验研究,并对进气控制挡板参数进行了优化。研究结果表明:在低负荷工况下,以螺旋气道进气为主,直流气道进气为辅,可以获得较强的进气涡流,达到改善低负荷... 详细信息

对大功率柴油机采用主辅双进气道系统改善低负荷工况下的进气涡流进行理论分析和试验研究,并对进气控制挡板参数进行了优化。研究结果表明:在低负荷工况下,以螺旋气道进气为主,直流气道进气为辅,可以获得较强的进气涡流,达到改善低负荷性能的目的。

关键词：内燃机柴油机主辅双进气道性能优化