Bacterial cellulose nanofibrous membrane as thermal stable separator for lithium-ion batteries

Jiang, Fengjing; Yin, Lei; Yu, Qin; Zhong, Cheng; Zhang, Junliang

doi:10.1016/j.jpowsour.2014.12.090

Cited by 146 publications

(87 citation statements)

References 30 publications

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“…It has been reported that cellulose/polysulfonamide composite separators exhibit good wettabilities and high thermal stabilities (Xu et al 2014b) and that cellulose membranes produced by force spinning of cellulose acetate also exhibit good wettabilities, high porosities and high ionic conductivities (Weng et al 2015). A bacterial cellulose based separator composed of a cross-linked three dimensional network exhibiting good performance in a battery has likewise been demonstrated (Jiang et al 2015). Since cellulose often contains significant amounts of water it is, however, very important to choose a type of cellulose that contains as little water as possible (Lu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries

et al. 2017

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The pore structure of the separator is crucial to the performance of a lithium-battery as it affects the cell resistance. Herein, a straightforward approach to vary the pore structure of Cladophora cellulose (CC) separators is presented. It is demonstrated that the pore size and porosity of the CC separator can be increased merely by decreasing the thickness of the CC separator by using less CC in the manufacturing of the separator. As the pore size and porosity of the CC separator are increased, the mass transport through the separator is increased which decreases the electrolyte resistance in the pores of the separator. This enhances the battery performance, particularly at higher cycling rates, as is demonstrated for LiFePO 4 /Li half-cells. A specific capacity of around 100 mAh g -1 was hence obtained at a cycling rate of 2 C with a 10 lm thick CC separator while specific capacities of 40 and close to 0 mAh g -1 were obtained for separators with thicknesses of 20 and 40 lm, respectively. As the results also showed that a higher ionic conductivity was obtained for the 10 lm thick CC separator than for the 20 and 40 lm thick CC separators, it is clear that the different pore structure of the separators was an important factor affecting the battery performance in addition to the separator thickness. The present straightforward, yet efficient, strategy for altering the pore structure hence holds significant promise for the manufacturing of separators with improved performance, as well as for fundamental studies of the influence of the properties of the separator on the performance of lithium-ion cells.

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Section: Introductionmentioning

confidence: 99%

Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries

et al. 2017

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“…This improved C-rate performance of ZNW separator is ascribed to the higher ionic conductivity in the cell which originates from the well developed nanoporous structure and the higher electrolyte uptake. increases, which may be due to little change in internal impedance [27,28]. However, ZNW separator shows more stable discharge capacity up to 200 cycles, which appears to be slightly higher than that of PE separator.…”

Section: Resultsmentioning

confidence: 91%

Preparation and electrochemical performance of ZrO2 nanoparticle-embedded nonwoven composite separator for lithium-ion batteries

Xiao

Gong

Wang

et al. 2015

Ceramics International

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“…The traditional commercial separators for LIBs are microporous membranes, whose low porosity, unsatisfactory thermal stability and poor wettability in liquid electrolytes inevitably limit the battery performance [100]. In this regard, fiber-based membranes and fiber-coated membranes have been developed [101].…”

Section: Applicationsmentioning

confidence: 99%

Electrospinning of Nanofibers for Energy Applications

et al. 2016

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With global concerns about the shortage of fossil fuels and environmental issues, the development of efficient and clean energy storage devices has been drastically accelerated. Nanofibers are used widely for energy storage devices due to their high surface areas and porosities. Electrospinning is a versatile and efficient fabrication method for nanofibers. In this review, we mainly focus on the application of electrospun nanofibers on energy storage, such as lithium batteries, fuel cells, dye-sensitized solar cells and supercapacitors. The structure and properties of nanofibers are also summarized systematically. The special morphology of nanofibers prepared by electrospinning is significant to the functional materials for energy storage.

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Bacterial cellulose nanofibrous membrane as thermal stable separator for lithium-ion batteries

Cited by 146 publications

References 30 publications

Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries

Thickness difference induced pore structure variations in cellulosic separators for lithium-ion batteries

Preparation and electrochemical performance of ZrO2 nanoparticle-embedded nonwoven composite separator for lithium-ion batteries

Electrospinning of Nanofibers for Energy Applications

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