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Behaviors of Polypyrrole Soft Actuators in litfsi or NaCl Electrolyte Solutions Containing Methanol

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Journal of Materials Science and Chemical Engineering 2013年第4期1卷 1-7页

作者： Tetsuya Kadoyama Jun Yamasaki Futo Tsumuji Satoshi Takamiya Shou Ogihara Daiki Hoshino Yasushiro Nishioka Department of Precision Machinery College of Science & Technology Nihon University Chiba Japan

Organic soft linear actuators were fabricated using galvanostatic electropolymerization of the polypyrrole (PPy) thin film using a methyl benzoate electrolyte solution of N,N-Diethyl-N-methyl-N-(2-methoxyethyl) ammonium bis (trifluoromethanesulfonyl) imide. The electrochemical deformation behaviors of the PPy actuators were investigated in aqueous solutions of an electrolyte, lithium bis (trifluoromethanesulphonyl) imide (litfsi) or sodium chloride (NaCl), containing different concentrations of methanol. The actuating strain of approximately 9% was achieved when the actuator was driven by a potential between –1 and 1 V with the potential sweep rate of 10 mV/s corresponding to 0.0025 Hz in the litfsi electrolyte containing 40% to 50% of methanol under a load stress of 0.3 MPa. However, the PPy actuator could not catch up with the higher frequency. On the other hand, the PPy actuator caught up with the potential sweep up to 0.1 Hz in the NaCl solutions with a methanol concentration between 40% and 60% with the expense of the actuating strain to approximately 1%.

关键词： Soft Actuator Polypyrrole litfsi NaCl

litfsi对Li/FeS_2电池放电性能的影响

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电源技术 2013年第12期37卷 2130-2131页

作者：刘玲袁中直邱彩霞余思恩刘金成华南师范大学化学与环境学院广东广州510006 惠州亿纬锂能股份有限公司广东惠州516006

为研究二(三氟甲基磺酰)亚胺锂(litfsi)对Li/FeS2电池电化学性能的影响,将litfsi作为添加剂加入到1 mol/L LiI/(DOL+DME)电解液中,以此电解液制作得到的AA型Li/FeS2实体电池,在60℃高温和-40℃低温下的放电容量和放电电压都得到了提高。... 详细信息

为研究二(三氟甲基磺酰)亚胺锂(litfsi)对Li/FeS2电池电化学性能的影响,将litfsi作为添加剂加入到1 mol/L LiI/(DOL+DME)电解液中,以此电解液制作得到的AA型Li/FeS2实体电池,在60℃高温和-40℃低温下的放电容量和放电电压都得到了提高。当litfsi添加量为0.5%(质量分数)时放电性能达到最佳,60℃下1 A放电容量可达3 200 mAh,-40℃下250 mA放电容量可达3 108 mAh。同时,电池的大电流放电性能也得到了改善。

关键词： Li FeS2电池放电温度范围 litfsi

Implanting a preferential solid electrolyte interphase layer over anode electrode of lithium ion batteries for highly enhanced Li^+ diffusion properties

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Journal of Energy Chemistry 2020年第9期29卷 285-292,I0009页

作者： Ye Kyu Kim Yoongon Kim Jaejin Bae Hyunwoo Ahn Yuseong Noh Hyunsu Han Won Bae Kim Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Nam-gu 37673PohangSouth Korea

The lithium-ion batteries are recognized as the most promising energy storage system,but it still does not meet the power requirements of electric vehicle batteries owing to low volumetric energy density with the traditional graphite electrode system.In this study,we report the development of a novel electrode system fabricated by implantation of a solid electrolyte interphase(SEI)layer on the graphite surface.The SEI-implanted graphite electrode is made using a lithium bis(trifluoromethanesulfonyl)imide(litfsi)-based electrolyte and cycled with a lithium tetrafluoroborate LiBF4-based electrolyte.This new electrode system shows significantly enhanced electrochemical properties owing to the rapid and efficient diffusion of Li ions through the SEI layer between the electrolyte and electrode.This graphite electrode with its pre-formed SEI layer achieves a reversible capacity of 357 mAh g^-1 at 0.5 C after 50 cycles,which is significantly higher than that of commercial lithium-ion battery systems constructed with LiPF6(312mAh g^-1).The resulting unique electrode system could present a new avenue in SEI research for highperformance lithium-ion batteries.

关键词： SEI layer Graphite Implanting Li ion diffusion litfsi LiBF4 Artificial Mobility

Li/MnO2电池用litfsi系电解液的研究

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华南师范大学学报(自然科学版) 2009年第S1期 222-223页

作者：高军汪红萍苏晓卉杨勇厦门大学化学系

为改善Li/MnO2电池的低温放电性能,制备了一系列新型litfsi系电解液,并且溶剂中加入适量乙酸甲酯.研究结果表明,电解液litfsi(1 mol/L)/PC∶DME∶EC∶MA是一种较好的体系.

关键词： Li/MnO2电池电解液 litfsi

Lithium bis(trifluoromethanesulfonyl)imide blended in polyurethane acrylate photocurable solid polymer electrolytes for lithium-ion batteries

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Journal of Energy Chemistry 2021年第11期30卷 485-496,I0011页

作者： Cristian Mendes-Felipe J.C.Barbosa R.Gonsalves D.Miranda C.M.Costa J.L.Vilas-Vilela S.Lanceros-Mendez BCMaterials Basque Center for MaterialsApplications and NanostructuresUPV/EHU Science Park48940 LeioaSpain Macromolecular Chemistry Group(LABQUIMAC) Department of Physical ChemistryFaculty of Science and TechnologyUniversity of the Basque Country(UPV/EHU)Barrio Sarriena s/nE-48940 LeioaSpain Center of Physics University of MinhoCampus of Gualtar4710-057 BragaPortugal Center of Chemistry University of MinhoCampus of Gualtar4710-057 BragaPortugal Ai–School of Technology IPCABarcelosPortugal Ikerbasque Basque Foundation for Science48009 BilbaoSpain

The increased demand of electronic devices promotes the development of advanced and more efficient energy storage devices, such as batteries. Lithium-ion batteries (LIBs) are the most studied battery systems due to their high performance. Among the different battery components, the separator allows the control of lithium ion diffusion between the electrodes. To overcome some drawbacks of liquid electrolytes, including safety and environmental issues, solid polymer electrolytes (SPEs) are being developed. In this work, a UV photocurable polyurethane acrylate (PUA) resin has been blended with lithium bis(trifluoromethanesulfonyl) imide (litfsi) up to 30 wt% litfsi content to reach a maximum ionic conductivity of 0.0032 mS/cm at room temperature and 0.09 mS/cm at 100 ℃. Those values allowed applying the developed materials as photocurable SPE in Swagelok type Li/C-LiFePO_(4) half-cells, reaching a battery discharge capacity value of 139 mAh.g^(−1) at C/30 rate. Those results, together with the theoretical studies of the discharge capacity at different C-rates and temperatures for batteries with litfsi/PUA SPE demonstrate the suitability of the developed photocurable SPE for LIB applications.

关键词： Solid polymer electrolytes Photocuring Polyurethane acrylate litfsi Li-ion batteries

Li/MnO_2电池用litfsi系电解液的研究

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华南师范大学学报（自然科学版） 2009年第A2期41卷 92-93页

作者：高军汪红萍苏晓卉杨勇厦门大学化学系福建厦门361005

关键词： Li/MnO2电池电解液 litfsi

litfsi电解液应用于锂一次电池研究进展

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船电技术 2013年第12期33卷 12-16页

作者：杨良军海军驻昆明地区军事代表办事处昆明650118

锂一次电池具有高比能、高功率、低放电率等优点,为了提高锂一次电池组的安全性,必须摈弃传统的高氯酸锂电解液,采用已经商业化的litfsi电解液是最为快捷有效的解决途径。然而litfsi电解液应用于锂一次电池中面临腐蚀铝箔的关键问题,本... 详细信息

锂一次电池具有高比能、高功率、低放电率等优点,为了提高锂一次电池组的安全性,必须摈弃传统的高氯酸锂电解液,采用已经商业化的litfsi电解液是最为快捷有效的解决途径。然而litfsi电解液应用于锂一次电池中面临腐蚀铝箔的关键问题,本文分析了litfsi电解液腐蚀铝箔的原因以及解决这一问题的途径。

关键词：锂一次电池 litfsi 腐蚀铝箔电解液

litfsi在电池电解液铝集流体表面的电化学行为研究

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LiTFSI在电池电解液铝集流体表面的电化学行为研究

基于litfsi的溶剂工程制备高效钙钛矿太阳能电池

河南省化学会2020年学术年会

作者：郑丽萍白俊敬刘梦瑶李龙李玉玲王宇飞李靖靖郑州工程技术学院化工食品学院

金属铝具有较好的机械强度和延展性、良好的电子导电率以及较高的化学、电化学稳定性,且价格便宜,被作为不可替代的正极材料集流体应用于电池中。电解液在铝集流体表面的电化学稳定性对于电池长期循环起到关键作用,因此,其表面的电化学... 详细信息

金属铝具有较好的机械强度和延展性、良好的电子导电率以及较高的化学、电化学稳定性,且价格便宜,被作为不可替代的正极材料集流体应用于电池中。电解液在铝集流体表面的电化学稳定性对于电池长期循环起到关键作用,因此,其表面的电化学行为在不同电解液中被广泛研究,其中以Li TFSI(双三氟甲基磺酰亚胺锂)为主。本文采用Li/Al扣式电池的恒电位直流极化法,结合三电极循环伏安法对1.0 M Li TFSI-EC/EMC (3:7,v/v)电解液在铝箔表面的电化学行为进行研究。如图1a所示,Li/Al扣式电池采用阶梯升高电压的恒压充电模式,电流变化情况显示Li TFSI电解液在4.2 V具有较显著的增大,这表明Li TFSI在铝集流体表面发生显著的电化学反应的电压为4.2 V。如图1b-1c所示在Li TFSI电解液中添加Li PF等容易在集流体表面生成稳定化合物的锂盐或添加剂,可以显著提高Li TFSI电解液在铝集流体表面的氧化电位,为其在电池中的应用提供很好的途径。

关键词： litfsi 铝集流体电化学行为

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基于LiTFSI的溶剂工程制备高效钙钛矿太阳能电池