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Intercalation engineering of layered vanadyl phosphates for high performance zinc-ion batteries

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Journal of Energy Chemistry 2021年第12期30卷 239-245,I0005页

作者： Kunjie Zhu Zhiqin Sun Pei Liu Haixia Li Yijing Wang kangzhe cao Lifang Jiao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education).Renewable Energy Conversion and Storage Center(ReCast) College of ChemistryNankai UniversityTianjin 30007JChina College of Chemistry and Chemical Engineering Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan.Xinyang Normal University.Xinyang.Henan 464000.China

Aqueous zinc-ion batteries(ZIBs) have attracted great attention as the candidates for large-scale energy storage system,recently,because of their low cost,environment-friendly,high safety,and high theoretical energy *** the numerous cathode materials,layered structure vanadium based polyanionic compounds,such as VOPO_(4),exhibit high specific capacity for Zn ion ***,the low Zn ion diffusion coefficient and limited interlayer spacing make the cathodes low reversible capacity and inferior cycling ***,K ions were pre-intercalated into the VOPO_(4) layers via ions exchange adopting VOPO_(4)·2 H_(2) O as the *** evaluated as the cathode for ZIBs,an excellent cycle stability of 400 cycles under a current density of 500 mA g^(-1) was achieved by the obtained KVOPO_(4) electrode,verifying the positive effect of intercalation ***,a solid-solution reaction Zn ion storage mechanism was *** study provides a new insight to explore high performance cathode materials for ZIBs.

关键词： Aqueous zinc-ion batteries Intercalation engineering Layered materials KVOPO_(4) Excellent performance

Functional nanolayers favor the stability of solid-electrolyteinterphase in rechargeable batteries

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Journal of Semiconductors 2024年第2期45卷 1-5页

作者： Huiqiao Liu Jiakun Zhang Jinjin Fu Chao Li Yang Fan kangzhe cao College of Chemistry and Chemical Engineering Xinyang Normal UniversityXinyang 464000China Xinyang Key Laboratory of Low-Carbon Energy Materials Xinyang 464000China

Rechargeable batteries have brought us lots of convenience and changed the way we ***,the demand for higher energy density,longer cycle life,and more fast charging ability urges researchers to develop advanced battery... 详细信息

关键词： battery electrolyte stability

Na2Ti6O13 Nanorods with Dominant Large Interlayer Spacing Exposed Facet as Na-Ion Batteries Anode

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Na2Ti6O13 Nanorods with Dominant Large Interlayer Spacing Ex...

Investigating the potassium storage behavior of CuO nanoplates anode

第七届全国物理无机化学学术会议

作者： kangzhe cao Lifang Jiao Yijing Wang Huatang Yuan Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

In order to satisfy the increasing demand for clean and sustainable energy sources,such as large-scale smart grids-based electrical energy storage,with good reliability,high power,low cost,environmental benignity and safety are critical need.[1-3]As a delegate of sodium titanates with 3D tunnel structure,NaTiO nanorods with dominant large interlayer spacing exposed facet were *** used as

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来源： cnki会议评论

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Investigating the potassium storage behavior of CuO nanoplat...

中国化学会第三届中国能源材料化学研讨会

作者： Wangyang Li Fugui Wang kangzhe cao Zhang Zhang Lifang Jiao College of Chemistry and Chemical Engineering Xinyang Normal University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of ChemistryNankai University

Potassium-ion batteries is emerging,recently,as an alternative for Lithium-ion batteries for their potentially low cost and high energy ***,the large size of K slumps the K ion storage performance,more suitable materials for reversible K storage are *** this abstract,CuO nanoplates were synthesized and investigated as potassium ion battery anode.

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来源： cnki会议评论

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基于绿色化学理念的高校化学教学探究

山东化工 2021年第9期50卷 204-205页

作者：刘会俏侯君曹康哲信阳师范学院化学化工学院河南信阳464000

绿色化学观念的形成在学生成长过程中具有重要的意义。如何培养学生的绿色思维,增强学生的绿色化学意识,是化学教育领域的一个重要问题。本文概述了绿色化学的教育意义,总结了目前高校绿色化学教学中存在的问题,并就如何基于绿色化学理... 详细信息

绿色化学观念的形成在学生成长过程中具有重要的意义。如何培养学生的绿色思维,增强学生的绿色化学意识,是化学教育领域的一个重要问题。本文概述了绿色化学的教育意义,总结了目前高校绿色化学教学中存在的问题,并就如何基于绿色化学理念进行教学进行了探究。

关键词：绿色化学高校教学探究

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硼掺杂多孔碳的构筑与储钾性能研究

信阳师范学院学报（自然科学版） 2021年第2期34卷 272-276页

作者：刘会俏何亚楠贾婧高子惠姜勇曹康哲信阳师范学院化学化工学院河南信阳464000

碳材料具有来源广、易制备等优点,是极具潜力的钾离子电池负极材料.以葡萄糖为碳前驱物,四硼酸钠为硼源,氯化钠为模板,制备了硼掺杂多孔碳.材料表征结果表明,硼掺杂多孔碳由超薄多孔碳纳米片组装而成,具有三维网络结构、较大的比表面积(... 详细信息

碳材料具有来源广、易制备等优点,是极具潜力的钾离子电池负极材料.以葡萄糖为碳前驱物,四硼酸钠为硼源,氯化钠为模板,制备了硼掺杂多孔碳.材料表征结果表明,硼掺杂多孔碳由超薄多孔碳纳米片组装而成,具有三维网络结构、较大的比表面积(577.8 m^(2)/g)及孔体积(0.66 cm^(3)/g).当用作钾离子电池负极材料时,该硼掺杂多孔碳负极表现出良好的循环稳定性和优异的倍率性能,在0.1 A/g电流密度下循环100周期后,可逆容量为246 mAh/g,电极的容量保持率为90.5%(相对于第二周期的放电容量);在不同电流密度下放电后回到0.1 A/g时,电极的可逆比容量恢复率为98.4%.该硼掺杂多孔碳作为钾离子电池负极材料具有潜在的应用前景.

关键词：钾离子电池硼掺杂多孔碳负极材料电化学性能

PVDF自供电柔性基底的制备及SERS性能研究

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信阳师范学院学报（自然科学版） 2023年第3期36卷 385-389页

作者：刘会俏付金金王晓晓郭怡龚雪金紫荷曹康哲信阳师范大学化学化工学院河南信阳464000

以聚偏氟乙烯(PVDF)为基体,加入还原石墨烯,制备了具有电场调制性能的PVDF复合材料,进一步将其与具有表面等离子体性能的银纳米线(AgNWs)相结合,制备了一种自供电柔性表面增强拉曼散射(SERS)基底。通过折叠操作使基底表面带电荷,利用静... 详细信息

以聚偏氟乙烯(PVDF)为基体,加入还原石墨烯,制备了具有电场调制性能的PVDF复合材料,进一步将其与具有表面等离子体性能的银纳米线(AgNWs)相结合,制备了一种自供电柔性表面增强拉曼散射(SERS)基底。通过折叠操作使基底表面带电荷,利用静电引力作用将溶液中带相反电荷的染料分子富集于基底表面后,基底表面银纳米线的表面等离子体共振作用使染料分子的拉曼信号得到增强。通过扫描电子显微镜(SEM)、傅里叶红外变换红外光谱仪(FTIR)、X射线衍射仪(XRD)对自供电柔性基底的形貌和结构进行表征,并利用拉曼光谱仪对该基底的拉曼增强性能进行了探究。研究结果表明,该自供电柔性SERS基底集富集-增强于一体,展现出了优异的拉曼增强性能,有望用于环境污染物分子的高灵敏检测。

关键词：聚偏氟乙烯(PVDF) 表面增强拉曼散射基底银纳米线表面增强拉曼散射

同方期刊数据库博看期刊

SnS_(2)/SnS/NC异质结构微米花的构筑及储钾性能探究

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信阳师范学院学报（自然科学版） 2024年第2期37卷 141-146页

作者：曹康哲何亚楠王思甜付金金刘会俏信阳师范大学化学化工学院/信阳市低碳能源材料重点实验室河南信阳464000

采用水热法制备SnS_(2)微米花(MFs),以聚多巴胺衍生的氮掺杂碳(NC)作为还原剂和缓冲基质,合成了SnS_(2)/SnS/NC异质结构微米花(SSNC MFs)作为钾离子电池负极材料。SnS_(2)和SnS形成的异质界面加快了电荷的转移,进而改善了电化学动力学... 详细信息

采用水热法制备SnS_(2)微米花(MFs),以聚多巴胺衍生的氮掺杂碳(NC)作为还原剂和缓冲基质,合成了SnS_(2)/SnS/NC异质结构微米花(SSNC MFs)作为钾离子电池负极材料。SnS_(2)和SnS形成的异质界面加快了电荷的转移,进而改善了电化学动力学。同时,NC增强了复合材料的导电性和结构稳定性。因而,SSNC MFs电极在0.1 A/g下,循环50周的可逆比容量为492.4 mAh/g,2.0 A/g下仍保持在199.6 mAh/g,远大于相同测试条件下的SnS_(2) MFs电极(分别为132.1和28.4 mAh/g),表现出显著提升的可逆比容量、循环稳定性和倍率性能。

关键词：钾离子电池负极材料锡基硫化物异质结构储钾性能

维普期刊数据库博看期刊

Regioregular Non-Fused Polymerized Small Molecular Acceptors Enabling Efficient All-Polymer Solar Cells

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Chinese Journal of Chemistry 2023年第7期41卷 790-796页

作者： Baoqi Wu Youle Li Shizeng Tian Yue Zhang Langheng Pan kangzhe Liu Mingqun Yang Fei Huang Yong cao Chunhui Duan Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouGuangdong510640 China

Comprehensive Summary The regioregularity induced by the isomers of the end-groups has been widely recognized as a key factor that determines the photovoltaic properties of polymerized small molecular acceptors(PSMAs)in all-polymer solar cells(all-PSCs).However,the influence of regioregularity on the photovoltaic properties of non-fused PSMAs has not been explored *** this contribution,two regioregular non-fused PSMAs,PFBTz-T-γand PFBTz-T-δ,were synthesized for the first time by using the monomers with isomeric pure *** with PFBTz-T-δ,PFBTz-T-γhas more compact and more ordered packing in solid state,which results in a more red-shifted optical absorption and a higher electron *** remarkably,PFBTz-T-γand PFBTz-T-δexhibited huge difference in photovoltaic performance in all-PSCs,which offered the power conversion efficiencies(PCEs)of 9.72%and 0.52%,*** studies have unveiled that the higher PCE of PFBTz-T-γis due to more efficient exciton dissociation,higher and more balanced electron/hole mobility,and less charge recombination as a result of favorable morphology of the blend *** work demonstrates that the development of regioregular non-fused PSMAs by tuning the polymerization sites is an effective strategy for obtaining high-efficiency all-PSCs.

关键词： All-polymer solar cells Non-fused framework Polymer acceptors Regioregularity Morphology regulation