二硫化钼包覆聚丙烯隔膜在锂硫电池中的应用
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摘要
采用水热法合成片层状二硫化钼(MoS2),不添加黏结剂,通过简单真空抽滤将MoS2包覆在聚丙烯微孔隔膜(Celgard)上,从而提高锂硫电池的性能。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、比表面积孔隙度及化学吸附分析仪(BET)对MoS2进行了形貌和物性测试,使用电化学工作站和电池测试系统对锂硫电池进行电化学性能表征,研究了MoS2包覆隔膜对锂硫电池穿梭效应的抑制效果。结果表明:MoS2包覆Celgard隔膜通过吸附多硫化锂和阻挡多硫化锂的穿梭,可以有效抑制锂硫电池的穿梭效应,在400mA/g电流密度下,首圈容量达到1 010mA·h/g,循环150圈后容量为432mA·h/g,性能明显优于使用空白商用Celgard隔膜的锂硫电池。
A strategy was reported to obtain high capacity with long cycle life by introducing a molybdenum disulfide(MoS2)coating on the separator.MoS2 which was synthesized by a facile,one-pot hydrothermal method was coated on the separator by simple pumping filtration without any binder to inhibit the polysulfide shuttling effect.The morphology and physical property of MoS2 and the separator coated with MoS2 were characterized by SEM、XRD and BET.The electrochemical performances of lithium sulfur batteries(Li-S batteries)were studied by electrochemical workstation and battery test station.In spite of the use of a simple sulfur-carbon black mixture as cathode,the Li-S battery with a MoS2-coated separator offered outstanding performances with an initial capacity of 1 010 mA·h/g and 432 mA·h/g after 150 cycles at 400 mA/g.In the same conditions,the Li-S battery with a Celgard separator offered performances with an initial capacity of 816 mA·h/g and 297 mA·h/g after 150 cycles at 400 mA/g.The improved results could be owned to the MoS2 coating,which not only reduced the battery resistance but also blocked the diffusion of soluble polysulfides avoiding shuttle effect during cycling.
A strategy was reported to obtain high capacity with long cycle life by introducing a molybdenum disulfide(MoS2)coating on the separator.MoS2 which was synthesized by a facile,one-pot hydrothermal method was coated on the separator by simple pumping filtration without any binder to inhibit the polysulfide shuttling effect.The morphology and physical property of MoS2 and the separator coated with MoS2 were characterized by SEM、XRD and BET.The electrochemical performances of lithium sulfur batteries(Li-S batteries)were studied by electrochemical workstation and battery test station.In spite of the use of a simple sulfur-carbon black mixture as cathode,the Li-S battery with a MoS2-coated separator offered outstanding performances with an initial capacity of 1 010 mA·h/g and 432 mA·h/g after 150 cycles at 400 mA/g.In the same conditions,the Li-S battery with a Celgard separator offered performances with an initial capacity of 816 mA·h/g and 297 mA·h/g after 150 cycles at 400 mA/g.The improved results could be owned to the MoS2 coating,which not only reduced the battery resistance but also blocked the diffusion of soluble polysulfides avoiding shuttle effect during cycling.
引文
[1]LI N,WENG Z,WANG Y,et al.An aqueous dissolved polysulfide cathode for lithium-sulfur batteries[J].Energy&Environmental Science,2014,7(10):3307-3312.
[2]BRESSER D,PASSERINI S,SCROSATI B.Recent progress and remaining challenges in sulfur-based lithium secondary batteries:A review[J].Chemical Communications,2013,49(90):10545-10562.
[3]MANTHIRAM A,FU Y,CHUNG S H,et al.Rechargeable lithium-sulfur batteries[J].Chemical Reviews,2014,114(23):11751-11787.
[4]BALACH J,JAUMANN T,KLOSE M,et al.Functional mesoporous carbon-coated separator for long-life,high-energy lithium-sulfur batteries[J].Advanced Functional Materials,2015,25(33):5285-5291.
[5]PENG H J,ZHANG Q.Designing host materials for sulfur cathodes:From physical confinement to surface chemistry[J].Angewandte Chemie,2015,54(38):11018-11020.
[6]JAYAPRAKASH N,SHEN J,MOGANTY S S,et al.Porous hollow carbon@sulfur composites for high-power lithium-sulfur batteries[J].Angewandte Chemie,2011,123(26):6026-6030.
[7]GHAZI Z A,HE X,KHATTAK A M,et al.MoS2/Celgard separator as efficient polysulfide barrier for long-life lithium-sulfur batteries[J].Advanced Materials,2017,29(21):1606817.
[8]ZHOU G,PEI S,LI L,et al.A grapheme-pure-sulfur sandwich structure for ultrafast,long-life lithium-sulfur batteries[J].Advanced Materials,2014,26(4):625-631.
[9]ZHENG G,YANG Y,CHA J J,et al.Hollow carbon nanofiber-encapsulated sulfur cathodes for high specific capacity rechargeable lithium batteries[J].Nano Letters,2011,11(10):4462-4467.
[10]HUANG J Q,ZHANG Q,ZHANG S M,et al.Aligned sulfur-coated carbon nanotubes with a polyethylene glycol barrier at one end for use as a high efficiency sulfur cathode[J].Carbon,2013,58:99-106.
[11]曹小倩,王新威,王新灵,等.基于氧化石墨烯的锂硫电池用聚丙烯隔膜的改性[J].功能高分子学报,2017,30(3):341-346.
[12]ZHI W S,LI W,CHA J J,et al.Sulphur-TiO2yolk-shell nanoarchitecture with internal void space for long-cycle lithium-sulphur batteries[J].Nature Communications,2013,4:1331.DOI:10.1038/ncomms2327.
[13]徐飞,杨书浩,刘千惠,等.共轭纳米孔聚合物在锂硫电池中的应用[J].功能高分子学报,2018,31(4):285-298.
[14]ZHANG S S.Liquid electrolyte lithium/sulfur battery:Fundamental chemistry,problems,and solutions[J].Journal of Power Sources,2013,231:153-162.
[15]LIN Z,LIU Z,FU W,et al.Phosphorous pentasulfide as a novel additive for high-performance lithium-sulfur batteries[J].Advanced Functional Materials,2013,23(8):1064-1069.
[16]ZHU J,GE Y,KIM D,et al.A novel separator coated by carbon for achieving exceptional high performance lithiumsulfur batteries[J].Nano Energy,2016,20:176-184.
[17]HUANG J Q,ZHUANG T Z,ZHANG Q,et al.Permselective graphene oxide membrane for highly stable and anti-selfdischarge lithium-sulfur batteries[J].ACS Nano,2015,9(3):3002-3011.
[18]ZHOU G,LI L,MA C,et al.A graphene foam electrode with high sulfur loading for flexible and high energy Li-S batteries[J].Nano Energy,2015,11:356-365.
[19]SUN J,SUN Y,PASTA M,et al.Entrapment of polysulfides by a black-phosphorus-modified separator for lithiumsulfur batteries[J].Advanced Materials,2016,28(44):9797-9803.
[20]KIM J H,LEE S,LEE J W,et al.3D-interconnected nanoporous RGO-CNT structure for supercapacitors application[J].Electrochimica Acta,2014,125(12):536-542.
[21]KIM J H,SEO J,CHOI J,et al.Synergistic ultrathin functional polymer-coated carbon nanotube interlayer for high performance lithium-sulfur batteries[J].ACS Applied Materials and Interfaces,2016,8(31):20092-20099.
[22]GAO X,LI J,GUAN D,et al.A scalable graphene sulfur composite synthesis for rechargeable lithium batteries with good capacity and excellent columbic efficiency[J].Acs Applied Materials and Interfaces,2014,6(6):4154-4159.
[2]BRESSER D,PASSERINI S,SCROSATI B.Recent progress and remaining challenges in sulfur-based lithium secondary batteries:A review[J].Chemical Communications,2013,49(90):10545-10562.
[3]MANTHIRAM A,FU Y,CHUNG S H,et al.Rechargeable lithium-sulfur batteries[J].Chemical Reviews,2014,114(23):11751-11787.
[4]BALACH J,JAUMANN T,KLOSE M,et al.Functional mesoporous carbon-coated separator for long-life,high-energy lithium-sulfur batteries[J].Advanced Functional Materials,2015,25(33):5285-5291.
[5]PENG H J,ZHANG Q.Designing host materials for sulfur cathodes:From physical confinement to surface chemistry[J].Angewandte Chemie,2015,54(38):11018-11020.
[6]JAYAPRAKASH N,SHEN J,MOGANTY S S,et al.Porous hollow carbon@sulfur composites for high-power lithium-sulfur batteries[J].Angewandte Chemie,2011,123(26):6026-6030.
[7]GHAZI Z A,HE X,KHATTAK A M,et al.MoS2/Celgard separator as efficient polysulfide barrier for long-life lithium-sulfur batteries[J].Advanced Materials,2017,29(21):1606817.
[8]ZHOU G,PEI S,LI L,et al.A grapheme-pure-sulfur sandwich structure for ultrafast,long-life lithium-sulfur batteries[J].Advanced Materials,2014,26(4):625-631.
[9]ZHENG G,YANG Y,CHA J J,et al.Hollow carbon nanofiber-encapsulated sulfur cathodes for high specific capacity rechargeable lithium batteries[J].Nano Letters,2011,11(10):4462-4467.
[10]HUANG J Q,ZHANG Q,ZHANG S M,et al.Aligned sulfur-coated carbon nanotubes with a polyethylene glycol barrier at one end for use as a high efficiency sulfur cathode[J].Carbon,2013,58:99-106.
[11]曹小倩,王新威,王新灵,等.基于氧化石墨烯的锂硫电池用聚丙烯隔膜的改性[J].功能高分子学报,2017,30(3):341-346.
[12]ZHI W S,LI W,CHA J J,et al.Sulphur-TiO2yolk-shell nanoarchitecture with internal void space for long-cycle lithium-sulphur batteries[J].Nature Communications,2013,4:1331.DOI:10.1038/ncomms2327.
[13]徐飞,杨书浩,刘千惠,等.共轭纳米孔聚合物在锂硫电池中的应用[J].功能高分子学报,2018,31(4):285-298.
[14]ZHANG S S.Liquid electrolyte lithium/sulfur battery:Fundamental chemistry,problems,and solutions[J].Journal of Power Sources,2013,231:153-162.
[15]LIN Z,LIU Z,FU W,et al.Phosphorous pentasulfide as a novel additive for high-performance lithium-sulfur batteries[J].Advanced Functional Materials,2013,23(8):1064-1069.
[16]ZHU J,GE Y,KIM D,et al.A novel separator coated by carbon for achieving exceptional high performance lithiumsulfur batteries[J].Nano Energy,2016,20:176-184.
[17]HUANG J Q,ZHUANG T Z,ZHANG Q,et al.Permselective graphene oxide membrane for highly stable and anti-selfdischarge lithium-sulfur batteries[J].ACS Nano,2015,9(3):3002-3011.
[18]ZHOU G,LI L,MA C,et al.A graphene foam electrode with high sulfur loading for flexible and high energy Li-S batteries[J].Nano Energy,2015,11:356-365.
[19]SUN J,SUN Y,PASTA M,et al.Entrapment of polysulfides by a black-phosphorus-modified separator for lithiumsulfur batteries[J].Advanced Materials,2016,28(44):9797-9803.
[20]KIM J H,LEE S,LEE J W,et al.3D-interconnected nanoporous RGO-CNT structure for supercapacitors application[J].Electrochimica Acta,2014,125(12):536-542.
[21]KIM J H,SEO J,CHOI J,et al.Synergistic ultrathin functional polymer-coated carbon nanotube interlayer for high performance lithium-sulfur batteries[J].ACS Applied Materials and Interfaces,2016,8(31):20092-20099.
[22]GAO X,LI J,GUAN D,et al.A scalable graphene sulfur composite synthesis for rechargeable lithium batteries with good capacity and excellent columbic efficiency[J].Acs Applied Materials and Interfaces,2014,6(6):4154-4159.