Journal ArticleDOI
Effect of plasticizers (EC or PC) on the ionic conductivity and thermal properties of the (PEO)9LiTf: Al2O3 nanocomposite polymer electrolyte system
TLDR
In this paper, a new plasticized nanocomposite polymer electrolyte based on poly (ethylene oxide) (PEO)-LiTf dispersed with ceramic filler (Al2O3) and plasticized with propylene carbonate (PC), EC, and a mixture of EC and PC (EC+PC) have been studied for their ionic conductivity and thermal properties.Abstract:
A new plasticized nanocomposite polymer electrolyte based on poly (ethylene oxide) (PEO)-LiTf dispersed with ceramic filler (Al2O3) and plasticized with propylene carbonate (PC), ethylene carbonate (EC), and a mixture of EC and PC (EC+PC) have been studied for their ionic conductivity and thermal properties. The incorporation of plasticizers alone will yield polymer electrolytes with enhanced conductivity but with poor mechanical properties. However, mechanical properties can be improved by incorporating ceramic fillers to the plasticized system. Nanocomposite solid polymer electrolyte films (200-600 mu m) were prepared by common solvent-casting method. In present work, we have shown the ionic conductivity can be substantially enhanced by using the combined effect of the plasticizers as well as the inert filler. It was revealed that the incorporating 15 wt.% Al2O3 filler in to PEO: LiTf polymer electrolyte significantly enhanced the ionic conductivity [sigma(RT) (max)= 7.8 x 10(-6) S cm(-1)]. It was interesting to observe that the addition of PC, EC, and mixture of EC and PC to the PEO: LiTf: 15 wt.% Al2O3 CPE showed further conductivity enhancement. The conductivity enhancement with EC is higher than PC. However, mixture of plasticizer (EC+PC) showed maximum conductivity enhancement in the temperature range interest, giving the value [sigma(RT) (max)= 1.2 x 10(-4) S cm(-1)]. It is suggested that the addition of PC, EC, or a mixture of EC and PC leads to a lowering of glass transition temperature and increasing the amorphous phase of PEO and the fraction of PEO-Li+ complex, corresponding to conductivity enhancement. Al2O3 filler would contribute to conductivity enhancement by transient hydrogen bonding of migrating ionic species with O-OH groups at the filler grain surface. The differential scanning calorimetry thermograms points towards the decrease of T-g, crystallite melting temperature, and melting enthalpy of PEO: LiTf: Al2O3 CPE after introducing plasticizers. The reduction of crystallinity and the increase in the amorphous phase content of the electrolyte, caused by the filler, also contributes to the observed conductivity enhancement.read more
Citations
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Journal ArticleDOI
Poly(ethylene oxide)-based electrolytes for lithium-ion batteries
Zhigang Xue,Dan He,Xiaolin Xie +2 more
TL;DR: In this article, a review of the recent developments and issues concerning polyethylene oxide (PEO) based electrolytes for lithium-ion batteries is presented, including blending, modifying and making PEO derivatives.
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Ceramic and polymeric solid electrolytes for lithium-ion batteries
TL;DR: In this paper, a comparison of the conductivities of solid-electrolyte materials being used or developed for use in lithium-ion batteries is presented, where inorganic ceramic and organic polymer solid electrolytes are reviewed.
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Synergistic Coupling between Li6.75La3Zr1.75Ta0.25O12 and Poly(vinylidene fluoride) Induces High Ionic Conductivity, Mechanical Strength, and Thermal Stability of Solid Composite Electrolytes
Xue Zhang,Ting Liu,Shuofeng Zhang,Xin Huang,Bingqing Xu,Yuanhua Lin,Ben Xu,Liangliang Li,Ce-Wen Nan,Yang Shen +9 more
TL;DR: This study indicates that the LLZTO modifying PVDF membrane is a promising electrolyte used for all-solid-state lithium batteries.
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Recent progress and remaining challenges in sulfur-based lithium secondary batteries--a review.
TL;DR: It is shown here that consistent progress has been achieved, to the point that this battery is now considered to be near to industrial production, however, the performance of present lithium-sulfur batteries is still far from meeting their real energy density potentiality.
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A review of composite solid-state electrolytes for lithium batteries: fundamentals, key materials and advanced structures.
Yun Zheng,Yuze Yao,Jiahua Ou,Matthew Li,Matthew Li,Dan Luo,Haozhen Dou,Zhaoqiang Li,Khalil Amine,Aiping Yu,Zhongwei Chen +10 more
TL;DR: In this article, a comprehensive overview of the recent developments in composite solid-state electrolytes (CSSEs) is presented, and four main types of advanced structures for CSSEs are classified and highlighted according to the recent progress.
References
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Journal ArticleDOI
Microscopic investigation of ionic conductivity in alkali metal salts-poly(ethylene oxide) adducts
TL;DR: In this article, conductivity, N.M.R. and D.S.C. measurements in two P(EO) complexes are presented, and the elastomeric phase is shown to be responsible of the ionic conductivity at all temperatures.
BookDOI
Applications of electroactive polymers
TL;DR: In this article, electrical and electrochemical properties of ion conducting polymers are discussed. But they do not consider the properties of polymers with polymer electrolytes, as they do in this paper.
Book
Solid State Electrochemistry
TL;DR: In this article, Bruce et al. presented a theoretical analysis of the properties of glassy electrolytes, including the atomic and electronic structure of the hosts and their insertion compounds, as well as their physical principles.
Journal ArticleDOI
Role of the ceramic fillers in enhancing the transport properties of composite polymer electrolytes
TL;DR: In this article, a model to account for the role of the ceramic fillers in enhancing the transport properties of PEO-based composite polymer electrolytes is proposed, supported by a series of specifically addressed electrochemical tests which included the determination of the conductivity and of the lithium transference number of various composite electrolyte samples differing from the type of the surface states of a ceramic filler.
Journal ArticleDOI
Effects of inert fillers on the mechanical and electrochemical properties of lithium salt-poly(ethylene oxide) polymer electrolytes
J.E. Weston,B.C.H. Steele +1 more
TL;DR: In this article, the effects of adding an inert filler (α-alumina) to lithium perchlorate-poly(ethylene oxide) polymer electrolytes have been investigated.