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Halogen-based functionalized chemistry engineering for high-performance supercapacitors

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Chinese Chemical Letters 2023年第1期34卷 114-126页

作者： Wuquan Ye Hongfei Wang Junling Shen Shahid Khan Yijun Zhong jiqiang ning Yong Hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China Department of Optical Science and Engineering Fudan UniversityShanghai 200438China Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China

Supercapacitors(SCs)are rated as the foremost efficient devices bridging the production and consumption of renewable energy.To address the ever-increasing energy requirements,it is indispensable to further develop high-performance SCs with merits of high energy-density,acceptable price and long-term stability.This review highlights the recent advances on halogen-based functionalized chemistry engineering in the state-of-the-art electrode system for high-performance SCs,primarily referring to the doping and decoration strategies of F,Cl,Br and I elements.Due to the discrepancy of electronegativity and atomic radius,the functionalization of each halogen element endows the substrate materials with different physicochemical properties,including energy bandgap structure,porosity distribution and surface affinity.The principle of halogen embedment into host materials by precisely controlling ionic adsorption and electronic structure is presented.And,the vital perspectives on the future challenges of halogen functionalization are also discussed.This work aims to deepen the understanding of halogen-based functionalized strategies to motivate further research for the development of high-performance SCs,and it also provides a prospect for exploring new material modification methods for electrochemical energy storage.

关键词： Halogen-based functionalized chemistry Doping strategy Decoration strategy Electrode materials Supercapacitors

Recent advances in the synthesis of non-carbon two-dimensional electrode materials for the aqueous electrolyte-based supercapacitors

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Chinese Chemical Letters 2021年第12期32卷 3733-3752页

作者： Hongfei Wang Yijun Zhong jiqiang ning Yong Hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

Supercapacitors(SCs) with high power density and long cycling span life are demanding energy storage devices that will be an attractive power solution to modern electronic and electrical applications. Numerous theoretical and experimental works have been devoted to exploring various possibilities to increase the functionality and the specific capacitance of electrodes for SCs. Non-carbon two-dimensional(2D)materials have been considered as encouraging electrode candidates for their chemical and physical advantages such as tunable surface chemistry, high electronic conductivity, large mechanical strength, more active sites, and dual non-faradaic and faradaic electrochemical performances. Besides, these 2D materials also play particular roles in constructing highway channels for fast ion diffusion. This concise review summarizes cutting-edge progress of some representative 2D non-carbon materials for the aqueous electrolyte-based SCs, including transition metal oxides(TMOs), transition metal hydroxides(TMHs), transition metal chalcogenides(TMCs), MXenes, metal-organic frameworks(MOFs) and some emerging materials. Different synthetic methods, effective structural designs and corresponding electrochemical performances are reviewed in detail. And we finally present a detailed discussion of the current intractable challenges and technical bottlenecks, and highlight future directions and opportunities for the development of next-generation high-performance energy storage devices.

关键词： Supercapacitors 2D non-carbon materials Aqueous electrolyte High power density Long cycling span life

New types of hybrid electrolytes for supercapacitors

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Journal of Energy Chemistry 2021年第6期30卷 219-232,I0006页

作者： Wuquan Ye Haiyan Wang jiqiang ning Yijun Zhong Yong Hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004ZhejiangChina Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina

Supercapacitors(SCs)are emerging as efficient energy storage devices but still suffering from limited energy density compared with batteries.Electrolytes have been regarded as the key to determine the energy storage performance of SCs.However,none of the conventional electrolytes can fully meet the increasing requirements of SCs in terms of high ion conductivity,excellent stability,wide voltage window and operating temperature range,as well as environmentally friend concerns.To this end,hybrid electrolytes have sprung up in recent years,which are believed to be the candidate to solve these shortcomings.Herein,the state-of-the-art types of hybrid electrolytes for SCs,including the combination of aqueous and organic,aqueous and gel polymer,ionic liquids(ILs)and organic,and ILs and gel polymer hybrid electrolytes,are reviewed.The effects of different hybrid systems on the performance of SCs and the underlying mechanisms are among the focal points of the review,and prospects and possible directions are discussed as well to provide further insight into the future development of this field.

关键词： Supercapacitors Hybrid electrolytes Energy density Power density Wide voltage window

Sr_(2)LuNbO_(6):Mn^(4+)深红荧光粉的光学性质:晶体场劈裂和多模振动耦合

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Science China Materials 2024年第3期67卷 939-945页

作者：周广涵张德保唐飞郑昌成宁吉强徐士杰 Department of Optical Science and Engineering School of Information Science and TechnologyFudan UniversityShanghai 200438China School of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhou 221116China Division of Natural and Applied Sciences Duke Kunshan UniversityKunshan 215316China

本研究利用光致发光(PL)、光致发光激发(PLE)、时间分辨PL和拉曼光谱技术等,详细研究了通过熔盐固相法合成的Sr_(2)LuNbO_(6):Mn^(4+)深红荧光粉的光学性质.在室温下,样品的PL光谱呈现出阶梯状谱形.然而,在低温下,测量的PL光谱由两组多... 详细信息

本研究利用光致发光(PL)、光致发光激发(PLE)、时间分辨PL和拉曼光谱技术等,详细研究了通过熔盐固相法合成的Sr_(2)LuNbO_(6):Mn^(4+)深红荧光粉的光学性质.在室温下,样品的PL光谱呈现出阶梯状谱形.然而,在低温下,测量的PL光谱由两组多模振动电子发光谱线组成.基于变温PL光谱和拉曼光谱,我们识别出双零声子谱线以及两组恒定能量间隔为~2.8 meV的多模声子伴线.这项研究首次发现Mn^(4+)离子的^(2)E_(g)激发态能级在氧化物八面体晶格中具有~2.8 meV能量差的劈裂,并证实多种振动模式深度参与Mn^(4+)离子的振动电子发光.

关键词： oxide phosphor deep red luminescence Mn^(4+)ion excited-state splitting impurity-lattice coupling

Influence of temperature and reverse bias on photocurrent spectrum and supra-bandgap spectral response of monolithic GalnP/GaAs double-junction solar cell

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Frontiers of Optoelectronics 2016年第2期9卷 306-311页

作者： Zhuo DENG jiqiang ning Rongxin WANG Zhicheng SU Shijie XU Zheng XING Shulong LU Jianrong DONG Hui YANG Department of Physics HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) The University of Hong Kong Hong Kong China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China

In this paper, influence of temperature and reverse bias on photocurrent spectrum and spectral response of a monolithic GalnP/GaAs double-junction solar cell was investigated in detail. Two sharp spectral response offsets, corresponding to the bandedge photo absorption of the bottom GaAs and the top GalnP subcells, respectively, show the starting response points of individual subcells. More interestingly, the cell photocurrent was found to enhance significantly with increasing the temperature. In addition, the cell photocurrent also increases obviously as the reverse bias voltage increases. The integrated photocurrent intensity of the top GalnP subcell was particularly addressed. A theoretical model was proposed to simulate the reverse bias dependence of the integrated photocurrent of the GalnP subceU at different temperatures.

关键词： GalnP alloy GaAs solar cell photocurrent

Hierarchical mesoporous S,N-codoped carbon nanostructures composed of Co/Co-Cu-S/carbon nanoplate arrays on carbon nanofibers as a self-supported air cathode for long-lasting rechargeable Zn-air batteries

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Science China(Technological Sciences) 2022年第3期65卷 693-703页

作者： XU ZhuYing YAN Lei SHEN JunLing YANG XiaoJing ning jiqiang ZHONG YiJun HU Yong Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China Department of Optical Science and Engineering Fudan UniversityShanghai 200438China Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China

One of the primary roadblocks to widespread applications of rechargeable Zn-air batteries is the durability issue with oxygen reduction and evolution processes(ORR/OER)bifunctional electrocatalysts.We herein report the construction of a selfsupported air cathode for Zn-air batteries made of S,N-codoped porous complex carbon nanostructures of Co/Co-Cu-S/carbon nanoplate arrays and carbon nanofibers(denoted as Co/Co-Cu-S@SNPCP-CFs).The hierarchical heteroatom-doped mesoporous carbon nanohybrids with multiple active species not only provide a high surface-to-volume ratio,exposing more catalytic sites and accelerating the charge and mass transfer,but also boost the activity and durability.The Co/Co-Cu-S@SNPCP-CFs catalyst reveals a small potential gap(ΔE=0.67 V)between the half-wave potential of ORR and OER potential at 10 m A ccm^(-2),demonstrating outstanding bifunctional performance.Furthermore,the rechargeable Zn-air battery made with the as-obtained electrocatalyst exhibits a high-power density of 220 m W cm^(-2)and a long cycling time of over 800 h at 10 m A ccm^(-2),and the flexible solid-state rechargeable Zn-air battery based on Co/Co-Cu-S@SNPCP-CFs self-supporting air cathode also displays a long duration time of over 60 h.

关键词： Co Co-Cu-S carbon bifunctional electrocatalyst rechargeable Zn-air batteries

Realization of high-performance tri-layer graphene saturable absorber mirror fabricated via a one-step transfer process

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Journal of Semiconductors 2020年第1期41卷 83-87页

作者： Cheng Jiang Xu Wang Jian Liu jiqiang ning Changcheng Zheng Xiaohui Li Ziyang Zhang Key Laboratory of Nanodevice and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Division of Natural and Applied Sciences Duke Kunshan UniversityKunshan 215316China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123China

Graphene,as a saturable absorber(SA),has attracted much attention for its application in ultrashort pulse fiber lasers due to its ultrafast interband carrier relaxation and ultra-broadband wavelength operation.Nevertheless,during the stacking process of monolayer graphene layer,the induced nonuniform contact at the interface of graphene layers deteriorate the device performance.Herein,we report the fabrication of graphene saturable absorber mirrors(SAMs)via a one-step transfer process and the realization of the much enlarged modulation depth and the much reduced nonsaturable loss with tri-layer graphene(TLG)than single-layer graphene(SLG)due to the improved uniform contact at the interface.Moreover,the operation of 1550 nm mode-locked Er-doped fiber laser with the TLG SAM exhibits excellent output characteristics of the maximum output power of 9.9 mW,a slope efficiency of 2.4%and a pulse width of 714 fs.Our findings are expected to pave the way toward high-performance ultrashort pulse fiber lasers based on graphene SAs.

关键词： graphene SAMs mode-locked lasers nonlinear absorption characteristics

Quantum cascade superluminescent light emitters with high power and compact structure

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Journal of Semiconductors 2020年第1期41卷 78-82页

作者： Jialin Sun Chuncai Hou Hongmei Chen Jinchuan Zhang ning Zhuo jiqiang ning Changcheng Zheng Zhanguo Wang Fengqi Liu Ziyang Zhang School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China The 718th Research Institute of China Shipbuilding Industry Corporation Handan 056027China Key Laboratory of Nanodevice and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Division of Natural and Applied Sciences Duke Kunshan UniversityKunshan 215316China

Quantum cascade(QC)superluminescent light emitters(SLEs)have emerged as desirable broadband mid-infrared(MIR)light sources for growing number of applications in areas like medical imaging,gas sensing and national defense.However,it is challenging to obtain a practical high-power device due to the very low efficiency of spontaneous emission in the intersubband transitions in QC structures.Herein a design of^5μm SLEs is demonstrated with a two-phonon resonancebased QC active structure coupled with a compact combinatorial waveguide structure which comprises a short straight part adjacent to a tilted stripe and to a J-shaped waveguide.The as-fabricated SLEs achieve a high output power of 1.8 mW,exhibiting the potential to be integrated into array devices without taking up too much chip space.These results may facilitate the realization of SLE arrays to attain larger output power and pave the pathway towards the practical applications of broadband MIR light sources.

关键词： quantum cascade superluminescent diode mid-wave infrared

多模式预先镇痛方案对术后临床结局的影响:文献综述

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中华疼痛学杂志 2023年第6期19卷 1017-1025页

作者：徐宁于继强荣伟青岛大学附属威海市中心医院麻醉科山东省威海市264400 滨州医学院第二临床医学院烟台市264300

多模式预先镇痛是指预先镇痛和多模式镇痛联合使用的理念,临床应用证明能够提供显著的术后镇痛效果,有利于患者术后加速康复。近年来随着多种多模式预先镇痛方案广泛应用于临床,在优化患者术后结局方面较其他镇痛方案已经显现出明显的... 详细信息

多模式预先镇痛是指预先镇痛和多模式镇痛联合使用的理念,临床应用证明能够提供显著的术后镇痛效果,有利于患者术后加速康复。近年来随着多种多模式预先镇痛方案广泛应用于临床,在优化患者术后结局方面较其他镇痛方案已经显现出明显的优势。本文就多模式预先镇痛方案对术后临床结局影响的相关文献予以综述。

关键词：预先镇痛术后临床结局炎性应激反应认知功能障碍免疫功能躁动胃肠功能紊乱