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Synergism of preintercalated manganese ions and lattice water in vanadium oxide cathodes for high-capacity and long-life Zn-ion batteries

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Journal of Energy Chemistry 2024年第9期96卷 709-717页

作者： Mengjing Wu Rongrong Li Kai Yang Lijiang Yin Weikang Hu xiong pu Key Laboratory of the Ministry of Education for Advanced Catalysis Material Institute of Physical ChemistryCollege of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004ZhejiangChina CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China Chilwee Power Co.Ltd. Changxing 313100ZhejiangChina

Aqueous Zn-ion batteries(AZIBs)are recognized as a promising energy storage system with intrinsic safety and low cost,but its applications still rely on the design of high-capacity and stable-cycling cathode *** this work,we present an intercalation mechanism-based cathode materials for AZIB,*** vanadium oxide with pre-intercalated manganese ions and lattice water(noted as MVOH).The synergistic effect between Mn^(2+)and lattice H_(2)O not only expands the interlayer spacing,but also significantly enhances the structural *** in-situ and ex-situ characterizations clarify the Zn^(2+)/H^(+)co–(de)intercalation mechanism of MVOH in aqueous *** demonstrated remarkable structure stability,excellent kinetic behaviors and ion-storage mechanism together enable the MVOH to demonstrate satisfactory specific capacity of 450 mA h g^(−1)at 0.2 A g^(−1),excellent rate performance of 288.8 mA h g^(−1)at 10 A g^(−1)and long cycle life over 20,000 cycles at 5 A g^(−1).This work provides a practical cathode material,and contributes to the understanding of the ion-intercalation mechanism and structural evolution of the vanadium-based cathode for AZIBs.

关键词： Zn-ion batteries Vanadium oxide Pre-intercalation Lattice water Manganese ion

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基于摩擦伏特效应的柔性直流电源研究进展

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材料工程 2024年第8期52卷 1-14页

作者：孟佳蒲雄王中林中国科学院北京纳米能源与系统研究所北京101400 广西大学物理科学与工程技术学院南宁530004

摩擦起电(triboelectrification,TE)是几乎所有材料表面都存在的物理现象,而半导体材料的TE不同于起静电的介电材料。在半导体与半导体或金属的动态接触界面上,机械摩擦导致界面原子间化学键合的不断破坏和重建过程,释放能量量子(也称... 详细信息

摩擦起电(triboelectrification,TE)是几乎所有材料表面都存在的物理现象,而半导体材料的TE不同于起静电的介电材料。在半导体与半导体或金属的动态接触界面上,机械摩擦导致界面原子间化学键合的不断破坏和重建过程,释放能量量子(也称键合子)来激发半导体界面的非平衡电子-空穴对,被激发的电子-空穴对在p-n结(或肖特基结、半导体异质结)的内建电场的作用下分离,从而在外电路产生直流电,该现象被称为摩擦伏特效应。此过程类似于光伏效应,不同之处在于能量的来源。在摩擦伏特效应中,电子-空穴对是由界面处原子瞬时跃迁释放的能量或界面处形成新键时释放的能量来激发,而光伏效应则是由光能激发。本文综述了基于摩擦伏特效应的直流发电机的研究进展,包括机理研究、材料与器件设计、表面改性增强策略等多个方面,并讨论了摩擦伏特器件在可穿戴设备领域作为柔性直流电源的设计开发、性能优化以及未来潜在应用场景。

关键词：摩擦伏特效应摩擦纳米发电机直流发电机柔性电源摩擦伏特纳米发电机

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Triboelectric nanogenerators as wearable power sources and self-powered sensors

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National Science Review 2023年第1期10卷 28-48页

作者： xiong pu Chi Zhang Zhong Lin Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and Sensor Beijing Institute of Nanoenergy and NanosystemsChinese Academy of Sciences School of Nanoscience and Technology University of Chinese Academy of Sciences School of Materials Science and Engineering College of EngineeringGeorgia Institute of Technology

Smart we arable technologies are augmenting human bodies beyond our biological capabilities in communication,healthcare and *** supply and information acquisition are essential for wearable electronics,whereas the increasing demands in multifunction are raising the requirements for energy and sensor *** triboelectric nanogenerator(TENG),proven to be able to convert various mechanical energies into electricity,can fulfill either of these two functions and therefore has drawn extensive attention and research efforts *** everyday life of a human body produces considerable mechanical energies and,in the meantime,the human body communicates mainly through mechanical signals,such as sound,body gestures and muscle ***,the TENG has been intensively studied to serve as either wearable sources or wearable self-powered ***,the recent finding on the fundamental understanding of TENGs is revisited briefly,followed by a summary of recent advancements in TENG-based wearable power sources and self-powered *** challenges and prospects of this area are given as well.

关键词： triboelectric nanogenerators power sources self-powered sensors wearable electronics

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Deep learning-assisted common temperature measurement based on visible light imaging

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Chinese Physics B 2024年第8期33卷 230-236页

作者：朱佳仪何志民黄成曾峻林惠川陈福昌余超群李燕张永涛陈焕庭蒲继雄 College of Physics and Information Engineering Minnan Normal UniversityZhangzhou 363000China Fujian Provincial Key Laboratory of Light Propagation and Transformation College of Information Science&EngineeringHuaqiao UniversityXiamen 361021China

Real-time,contact-free temperature monitoring of low to medium range(30℃-150℃)has been extensively used in industry and agriculture,which is usually realized by costly infrared temperature detection *** paper proposes an alternative approach of extracting temperature information in real time from the visible light images of the monitoring target using a convolutional neural network(CNN).A mean-square error of<1.119℃was reached in the temperature measurements of low to medium range using the CNN and the visible light *** angle and imaging distance do not affect the temperature detection using visible optical images by the ***,the CNN has a certain illuminance generalization ability capable of detection temperature information from the images which were collected under different illuminance and were not used for *** to the conventional machine learning algorithms mentioned in the recent literatures,this real-time,contact-free temperature measurement approach that does not require any further image processing operations facilitates temperature monitoring applications in the industrial and civil fields.

关键词： convolutional neural network visible light image temperature measurement low-to-medium-range temperatures

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Stretchable iontronics with robust interface bonding between dielectric and ion-conducting elastomers

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Nano Research 2023年第9期16卷 11862-11870页

作者： Zhongpeng Li Panpan Zhang Yangshi Shao Zi-Hao Guo xiong pu School of Chemistry and Chemical Engineering Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Dry ion-conducting elastomers(ICEs)are emerging stretchable and ionic conductive materials that are demonstrated with excellent thermal stability and great promise in multifunctional iontronic ***,the poor interface between the ICEs and the dielectric material is one of the issues hindering the application of the stretchable iontronic ***,a polydimethylsiloxane(PDMS)based ion-conducting elastomer with dynamic crosslinking structures is reported,which achieves the stretchability of 475%and healing efficiency of 99%.More importantly,a robust interface bonding can be generated between the electrode and the dielectric material,which is beneficial to enhance the performance and lifespan of the flexible iontronic *** this PDMS based ICE as the electrode and PDMS as the dielectric material,two stretchable iontronic devices(triboelectric nanogenerator and capacitive pressure sensor)are realized with overall self-healing and stretchable *** findings provide a promising strategy to achieve integrate stretchable iontronics or electronics with a robust interface between the electrode and dielectric materials.

关键词： ion-conducting elastomers robust interface iontronics triboelectric nanogenerator pressure sensor

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Ultralight Iontronic Triboelectric Mechanoreceptor with High Specific Outputs for Epidermal Electronics

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Nano-Micro Letters 2022年第6期14卷 1-14页

作者： Hai Lu Wang Zi Hao Guo xiong pu Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China CUSTech Institute of Technology Wenzhou 325024ZhejiangPeople’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

The pursuit to mimic skin exteroceptive ability has motivated the endeavors for epidermal artificial *** mechanoreceptors are required to be highly sensitive to capture imperceptible skin deformations and preferably to be self-powered,breathable,lightweight and deformable to satisfy the prolonged wearing *** is still struggling to achieve these traits in single device,as it remains difficult to minimize device architecture without sacrificing the sensitivity or *** this article,we present an all-fiber iontronic triboelectric mechanoreceptor(ITM)to fully tackle these challenges,enabled by the high-output mechano-to-electrical energy *** proposed ITM is ultralight,breathable and stretchable and is quite stable under various mechanical *** the one hand,the ITM can achieve a superior instantaneous power density;on the other hand,the ITM shows excellent sensitivity serving as epidermal *** health status monitoring is readily implemented by the ITM calibrating by detecting vital signals and physical activities of human *** ITM can also realize acoustic-to-electrical conversion and distinguish voices from different people,and biometric application as a noise dosimeter is *** ITM therefore is believed to open new sights in epidermal electronics and skin prosthesis fields.

关键词： Ultralight Iontronic Triboelectric mechanoreceptor Power density Epidermal electronics

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In situ induced cation-vacancies in metal sulfides as dynamic electrocatalyst accelerating polysulfides conversion for Li-S battery

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Journal of Energy Chemistry 2022年第12期75卷 74-82,I0003页

作者： Rongrong Li Hao Sun Caiyun Chang Yuan Yao xiong pu Wenjie Mai Siyuan Laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632GuangdongChina CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqing 400044China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Cation vacancy engineering is considered to be one of the effective methods to solve the issues of shuttling and sluggish redox kinetics of Li PSs owing to the intrinsic tunability of electronic ***,cation vacancies are few studied in the Li-S realm due to their complex and rigid preparation *** this work,one-step pyrolysis is reported to in situ introduce Fe-vacancies into iron sulfide(Fe_(0.96)S)as a sulfur *** this host structure,Fe_(0.96)S is first employed as an adsorbent and catalyst in Li-S *** the carbonization process,a tight contact structure of Fe_(0.96)S crystal and carbon network(Fe_(0.96)S@C)is in situ constructed,and the carbon layer as a conductor provides smooth electrons transfer pathways for redox ***,due to the introduction of Fe-vacancies in Fe S crystal,the adsorption capability and catalytic effect for Li PSs have been substantially ***,the presence of Fe_(0.96)S crystal favors the mobility of electron and diffusion of Li+,which is revealed by the experiments and theoretical *** synergy respective advantages effect of Fe_(0.96)S and carbon,the Fe_(0.96)S@C-S cathode delivers high-rate capability at 5.0 C and stable long-life *** under a high sulfur loading of 3.5 mg/cm^(2),the durable cyclic stability is still exhibited with the capacity retention of 93%over 400 cycles at 1.0 C,and the coulombic efficiency is≥98%.Noting that this strategy greatly simplifies the synthetic process of currently known cation-vacancy materials and furnishes a universal mentality for designing both divinable and astonishing new cation-vacancy materials.

关键词： Cation vacancy Fe_(0.96)S@C structure Catalytic conversion Lithium-sulfur battery

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Bowen’s disease on the palm: A case report

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World Journal of Clinical Cases 2019年第18期7卷 2910-2915页

作者： Shi-Rong Yu Jing-Zhan Zhang xiong-Ming pu Xiao-Jing Kang Department of Dermatology People’s Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830001Xinjiang Uygur Autonomous RegionChina Graduate School Xinjiang Medical UniversityUrumqi 830001Xinjiang Uygur Autonomous RegionChina

BACKGROUND Bowen’s disease (BD) is a persistent, progressive intraepidermal carcinoma. BD usually occurs in areas exposed to sunlight. Involvement of the dorsum of the hand is not rare, but that of the palmar aspect is very unusual. Only a few cases have been reported in the literature. CASE SUMMARY Here, we report the case of a 48-year-old male patient who presented with a history of persistent local erythema lasting for 2 years on the thenar eminence of the left palm. Initially diagnosed as hand eczema, the condition did not improve with intermittent treatment with anti-allergy medications or topical glucocorticoid ointments, among other approaches. Then, the area of erythema gradually enlarged and was accompanied by mild itching. For a definite diagnosis and treatment, the patient came to our hospital. Dermoscopic examination revealed BD, and histopathological examination confirmed the diagnosis. We performed partial resection of the skin lesion followed by photodynamic therapy. No recurrence was observed at the 6-mo follow-up. CONCLUSION For all atypical palmar lesions, early dermoscopy and/or skin biopsy are needed to avoid missed diagnosis or misdiagnosis.

关键词： Bowen's disease Dermoscopy Pathology Case report

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U形钢筋预制拼装水池壁板湿接缝抗震性能研究

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特种结构 2024年第2期41卷 1-6+11页

作者：王泽明王长祥徐辉熊普荣彬中国市政工程华北设计研究总院有限公司天津大学建筑工程学院

预制拼装水池可以减少大量现场湿作业,有提高施工效率、减少环境污染的优势。预制拼装水池节点采用湿式连接,可以提高水池结构的整体性。本文通过非线性有限元软件ABAQUS,对8种U形钢筋搭接水池壁板节点和1种整体现浇节点建模并进行拟静... 详细信息

预制拼装水池可以减少大量现场湿作业,有提高施工效率、减少环境污染的优势。预制拼装水池节点采用湿式连接,可以提高水池结构的整体性。本文通过非线性有限元软件ABAQUS,对8种U形钢筋搭接水池壁板节点和1种整体现浇节点建模并进行拟静力抗震数值模拟,对比了不同参数的U形钢筋搭接的湿接缝性能并研究了U形钢筋搭接长度和湿接缝的混凝土强度等级对接缝处连接可靠性的影响。研究结果表明:U形钢筋搭接的湿接缝抗震性能较好,增加U形钢筋搭接长度可以提高湿接缝的抗震性能,当搭接长度大于等于18倍U形钢筋直径时,U形钢筋湿接缝抗震性能近似等同于整体现浇,而提高湿接缝混凝土强度等级不能有效改善模型的抗震性能。

关键词： U形钢筋搭接连接抗震性能非线性有限元分析搭接长度预制拼装

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Hierarchically porous carbon/red phosphorus composite for high-capacity sodium-ion battery anode

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Science Bulletin 2018年第15期63卷 982-989页

作者： Meng Li Na Feng Mengmeng Liu Zifeng Cong Jiangman Sun Chunhua Du Quanbin Liu xiong pu Weiguo Hu CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and NanosystemsChinese Academy of Sciences School of Nannoscience and Technology University of Chinese Academy of Sciences School of Chemical Engineering and Light Industry Guangdong University of Technology Center on Nanoernergy Researh School of Physical Science and Technology Guangxi University

Red phosphorus has received remarkable attention as a promising anode material for sodium ion batteries(NIBs) due to its high theoretical capacity. However, its practical application has been impeded by its intrinsic low electronic conductivity and large volume variations during sodiation/desodiation process. Here, we design a composite to confine nanosized red phosphorus into the hierarchically porous carbon(HPC) walls by a vaporization-condensation strategy. The mass loading of P in the HPC/P composite is optimized to deliver a reversible specific capacity of 2,202 m Ah/gpbased on the mass of red P(836 m Ah/gcompositebased on the total composite mass), a high capacity retention over 77% after100 cycles, and excellent rate performance of 929 m Ah/gpat 2 C. The hierarchical porous carbon serves as the conductive networks, downsize the red phosphorus to nanoscale, and provide free space to accommodate the large volume expansions. The suppressed mechanical failure of the red phosphorus also enhances the stability of solid-electrolyte interface(SEI) layer, which is confirmed by the microscopy and impedance spectroscopy after the cycling tests. Our studies provide a feasible approach for potentially viable high-capacity NIB anode.

关键词： Red phosphorus Hierarchical porous carbon Sodium ion batteries Anode

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