A novel composite microporous polymer electrolyte prepared with molecule sieves for Li-ion batteries

Jiang, Yanxia; Chen, Zuofeng; Zhuang, Quanchao; Xu, Jin-Mei; Dong, Quanfeng; Huang, Ling; Sun, Shi‐Gang

doi:10.1016/j.jpowsour.2006.02.029

Cited by 81 publications

(37 citation statements)

References 23 publications

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“…The oxidation of some trace species generated a hump between 2 and 3.5 V for the blended hybrid SPEs. 67 One hump was also observed at a higher voltage of 4.3 V for the MP(70 : 30)-32 blended hybrid electrolyte. Overall, the attainment of an electrochemical stability window of over 5 V opens the opportunity for the presented blend hybrid SPEs to be utilized in applications in high voltage lithium-ion batteries.…”

Section: Electrochemical Stability Window Of the Blended Hybrid Spesmentioning

confidence: 90%

High ion-conducting solid polymer electrolytes based on blending hybrids derived from monoamine and diamine polyethers for lithium solid-state batteries

Liu

Saikia

et al. 2017

RSC Adv.

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In this study, polyetheramine and polyetherdiamine were cross-linked separately with (3-glycidyloxypropyl) trimethoxysilane (GLYMO) and poly(ethylene glycol) diglycidyl ether (PEGDGE) and then blended in different ratios to obtain blended hybrid solid polymer electrolytes (SPEs). The blend network architecture improved the LiClO 4 salt dissociation, which led to a higher ionic conductivity of the SPEs properties, the present blend hybrid SPE has the potential to be used in lithium solid-state batteries and other electrochemical devices.

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Section: Electrochemical Stability Window Of the Blended Hybrid Spesmentioning

confidence: 90%

High ion-conducting solid polymer electrolytes based on blending hybrids derived from monoamine and diamine polyethers for lithium solid-state batteries

Liu

Saikia

et al. 2017

RSC Adv.

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“…• C. 44 Thus, the activation energy (E a ) could be calculated from the slope of fitted straight line according to the Arrhenius equation σ = A exp (-E a /RT), where σ was conductivity of membrane, A was the pre-exponential index, E a was the activation energy, R was gas constant (8.314 J K −1 mol −1 ), and T was temperature (K). The E a for MPP separator and PSAP separator were 15.83 kJ mol −1 and 8.84 kJ mol −1 , respectively.…”

Section: -35mentioning

confidence: 99%

A Heat Resistant and Flame-Retardant Polysulfonamide/Polypropylene Composite Nonwoven for High Performance Lithium Ion Battery Separator

Zhang

Liu

et al. 2014

J. Electrochem. Soc.

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A heat resistant and flame-retardant polysulfonamide/polypropylene composite nonwoven has been developed and exploited as an advanced separator for high performance lithium ion battery via melt-blown spinning followed by a phase-inversion process. It was manifested that such composite nonwoven exhibited improved flame retardance, superior thermal resistance and better electrolyte wettability as compared to commercialized polypropylene separator. It was also demonstrated that the lithium cobalt oxide (LiCoO 2 )/graphite cells employing the composite separator possessed better rate capability and superior cycling stability than those of polypropylene separator. Furthermore, this study verified the beneficial impact of polysulfonamide/polypropylene composite separator with respect to commercial polypropylene separator on cycle performance of lithium iron phosphate (LiFePO 4 )/lithium (Li) cells even at an elevated temperature of 120 • C. These fascinating results suggest that such composite nonwoven is promising separator for high performance lithium ion battery. Lithium ion battery (LIB) is considered to be the most promising technology for electric vehicles and energy storage systems due to its high-energy density, high-specific energy, low self-discharge rate, and long lifetime cycle.1-5 Among the components in lithium ion battery, the separator is a critical component for battery performance and also crucial for battery safety. The separator separates positive electrode and negative electrode while permitting the rapid diffusion of lithium ions through electrolyte.6,7 Microporous polyolefin-based separators, such as polyethylene and polypropylene membranes, have been commercially used as major separators for LIB because of satisfactory mechanical property, excellent chemical stability and good thermal shutdown properties. [8][9][10] The thermal shutdown property of the microporous separators could cut off the thermal runaway at the shutdown temperature.6 However, the microporous polyolefin separators often suffered from severe thermal shrinkage above melting temperature when the elevated temperature kept a little long time, which could cause direct contact between cathode and anode and finally result in short circuit of lithium battery.11 Meanwhile, the microporous polyolefin separators have been proven to cause poor electrolyte wettability problems, which lead to an increase in cell resistance and would restrict the battery performance.12,13 Tremendous efforts have been made to improve the overall properties of commercial polyolefin separators.14-17 One strategy was to incorporate inorganic nanoparticles into microporous polyethylene membrane (PE) or polypropylene membrane (PP) and the other one was to coat high performance polymers onto commercial separator surface. As a matter of fact, ceramic nanoparticles coating suffered from insufficient adhesion to polymer matrix, which could lead to the particles detached from separators' surface and generate a non-uniform current density across the electrodes during c...

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“…SBA-15 can e.g. be used as a template for anode or cathode materials for batteries [68][69][70]. Furthermore, it can also be used in solar cell applications, both as a template for incorporation of titania or cobalt nanoparticles [42,44,[71][72][73], and as a scattering layer for improving the cell efficiency [74].…”

Section: Energy Applicationsmentioning

confidence: 99%

Mesoporous Building Blocks: Synthesis and Characterization of Mesoporous Silica Particles and Films

Björk¹

2013

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On the cover, the structure of SBA-15 is illustrated. Inside the pores SEM micrographs have been inserted showing (clockwise from the top): rods, fibers, a film consisting of rods grown on a substrate, a film consisting of platelets grafted on a substrate, short rods, and platelets. In the center the sheet morphology is presented.© Emma Björk, unless otherwise stated.ISBN: 978-91-7519-516-2 ISSN: 0345-7524 Printed by LiU-tryck, Linköping, Sweden, 2013 Research is formalized curiosity. It is poking and prying with a purposeZora Neale Hurston (1903Hurston ( -1960 i ABSTRACTCatalyst supports, drug delivery systems, hosts for nanoparticles, and solar cells are just some examples of the wide range of exciting applications for mesoporous silica. In order to optimize the performance of a specific application, controlling the material's morphology and pore size is crucial. For example, short and separated particles are beneficial for drug delivery systems, while for molecular sieves, the pore size is the key parameter.In this thesis, mesoporous silica building blocks, crystallites, with hexagonally ordered cylindrical pores were synthesized, with the aim to understand how the synthesis parameters affect the particle morphology and pore size. The synthesis of the particles is performed using a sol-gel process, and in order to increase the pore size, a combination of low temperature, and additions of heptane and NH 4 F was used. By variations in the amounts of reagents, as well as other synthesis conditions, the particle morphology and pore size could be altered. Separated particles were also grown on or attached to substrates to form films. Also, a material with spherical pore structure was synthesized, for the first time using this method.It was found that a variation in the heptane concentration, in combination with a long stirring time, yields a transition between fiber and sheet morphologies. Both morphologies consist of crystallites, which for the fibers are joined end to end, while for the sheets they are attached side by side such that the pores are accessible from the sheet surface. The crystallites can be separated to a rod morphology by decreasing the stirring time and tuning the HCl concentration, and it was seen that these rods are formed within 5 min of static time, even though the pore size and unit cell parameters were evolving for another 30 min. Further studies of the effects of heptane showed that the shape and mesoscopic parameters of the rods are affected by the heptane concentration, up to a value where the micelles are fully saturated with heptane. It was also observed that the particle width increases with decreasing NH 4 F concentration, independent of heptane amount, and a platelet morphology can be formed. The formation time of the particles decrease with decreasing NH 4 F, and the growth mechanism for platelets was further studied. The pore sizes for various morphologies were altered by e.g. variations in the hydrothermal treatment conditions, or the method for removing the surfactants.ii T...

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A novel composite microporous polymer electrolyte prepared with molecule sieves for Li-ion batteries

Cited by 81 publications

References 23 publications

High ion-conducting solid polymer electrolytes based on blending hybrids derived from monoamine and diamine polyethers for lithium solid-state batteries

High ion-conducting solid polymer electrolytes based on blending hybrids derived from monoamine and diamine polyethers for lithium solid-state batteries

A Heat Resistant and Flame-Retardant Polysulfonamide/Polypropylene Composite Nonwoven for High Performance Lithium Ion Battery Separator

Mesoporous Building Blocks: Synthesis and Characterization of Mesoporous Silica Particles and Films

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