Enhanced ionic conductivity of poly(ethylene oxide) (PEO) electrolyte by adding mesoporous molecular sieve LiAlSBA

Li, Xueli; Zhao, Yi; Cheng, Liang; Yan, Manming; Zheng, Xuezheng; Gao, Zi; Jiang, Zhiyu

doi:10.1007/s10008-004-0613-y

Cited by 17 publications

(11 citation statements)

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“…The increases in conductivity with weight of PEO (Figure 3 i) may be explained by increases in the coverage of W particles with PEO and its ionic conductivity. The methanol can react with the W and surface oxide [ 37,38 ] to form solid electrolytes with PEO, [39][40][41] in a way that may facilitate ionic conduction between W particles. Impedance measurements of cured pastes with various PEO content (from 1.5 to 2.5g) using an impedance analyzer (from 1 MHz to 1.8 GHz) ( Figure S4a and S4b) and a RLC meter (from 20 Hz to 1 MHz) ( Figure S4c and S4d) confi rm that increasing the PEO contents reduces the impedance at low frequency (20 Hz to 300 MHz).…”

Section: Communicationmentioning

confidence: 99%

Biodegradable Materials for Multilayer Transient Printed Circuit Boards

et al. 2014

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Section: Communicationmentioning

confidence: 99%

Biodegradable Materials for Multilayer Transient Printed Circuit Boards

et al. 2014

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“…As expected, a Nyquist plot in a shape of slanted line at lower frequency followed by a large semicircle at high frequency has been observed 44 , 45 . The impedance characteristic of PEO-based electrolyte comes from the combined effect by a capacitance of stainless steel electrode in series with a parallel combination of bulk ionic resistance of the electrolyte and electrolyte capacitance 46 . At high frequency, an intersection of the semicircle and the real axis (Z’) gives a bulk resistance of the electrolyte 46 .…”

Section: Resultsmentioning

confidence: 99%

“…The impedance characteristic of PEO-based electrolyte comes from the combined effect by a capacitance of stainless steel electrode in series with a parallel combination of bulk ionic resistance of the electrolyte and electrolyte capacitance 46 . At high frequency, an intersection of the semicircle and the real axis (Z’) gives a bulk resistance of the electrolyte 46 . By extending a trend line of the semicircle to intercept real axis, we can approximate bulk resistance of the electrolyte as 85.86 Ω (Figure 3d ).…”

Section: Resultsmentioning

confidence: 99%

Conductive Cellulose Composites with Low Percolation Threshold for 3D Printed Electronics

Park

Kim

2017

Sci Rep

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We are reporting a 3D printable composite paste having strong thixotropic rheology. The composite has been designed and investigated with highly conductive silver nanowires. The optimized electrical percolation threshold from both simulation and experiment is shown from 0.7 vol. % of silver nanowires which is significantly lower than other composites using conductive nano-materials. Reliable conductivity of 1.19 × 10 2 S/cm has been achieved from the demonstrated 3D printable composite with 1.9 vol. % loading of silver nanowires. Utilizing the high conductivity of the printable composites, 3D printing of designed battery electrode pastes is demonstrated. Rheology study shows superior printability of the electrode pastes aided by the cellulose's strong thixotropic rheology. The designed anode, electrolyte, and cathode pastes are sequentially printed to form a three-layered lithium battery for the demonstration of a charging profile. This study opens opportunities of 3D printable conductive materials to create printed electronics with the next generation additive manufacturing process.Design of 3D printable conductive composites focuses both on the investigation of network percolation with the conductive fillers and optimization of extrusion printability with paste extruder. Electrically conductive silver nanowire (AgNW) has been proposed as a conductive filler for the application of conductive nanocomposites in three dimension (3D Conductor) 1,2 . AgNW shows metallic electrical conductivity (1.6 × 10 −6 Ω•cm) and capability of percolated network formation from its high aspect ratio (typically, 50~500) within a composite matrix 1, 3, 4 . I. Xu et al. 1 and White et al. 2 have demonstrated an AgNW based conductive nanocomposite with a maximum electrical conductivity of 10 3 S/cm. Thanks to the promising conductivity of AgNW, the reported conductivity of AgNW based composites presents superior conductivity compared to carbon based conductive composites introduced elsewhere [5][6][7] . Not only the high conductivity of AgNW benefits the nanocomposite but also the high aspect ratio of AgNW provides the advantage in composite design by allowing the lower percolation thresholds. In a composite with a conductive filler inclusion, the conductive fillers can form conducting paths when they are in contact or at proximity where electrons can jump between fillers (tunneling effect) 8 . The described conductive path is called a percolation network which is essential for a composite to conduct electrons. Both the demonstrations from White et al. and Xu et al. have presented low percolation thresholds of 2.3 vol. % and 0.29 vol. % of AgNW concentrations. The reported thresholds of AgNW based composites are relatively low as the percolation threshold of a composite with silver nanoparticle (AgNP) has been found as 12 vol. % 9 while it typically ranges between 3~25 wt. % 10, 11 for carbon black (CB) based composites. A sodium carboxymethyl cellulose (CMC) is often used and researched as a matrix material due to its viscosity thi...

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“…18 However, polymer electrolytes show a poor performance at room temperature due to their low ionic conductivity and high interfacial resistance with electrodes. [19][20][21][22] Many attempts have been made to increase the ionic conductivity of polymer electrolytes, for example, by adding ceramic fillers or mixing with other materials. [19][20][21][22] In our previous studies, we presented a crosslinked polymer network system for a solid polymer electrolyte, 23 in which a crosslinker formed a rigid crosslinked network and a plasticizer conducted lithium ions within the network.…”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21][22] Many attempts have been made to increase the ionic conductivity of polymer electrolytes, for example, by adding ceramic fillers or mixing with other materials. [19][20][21][22] In our previous studies, we presented a crosslinked polymer network system for a solid polymer electrolyte, 23 in which a crosslinker formed a rigid crosslinked network and a plasticizer conducted lithium ions within the network. This system showed reasonably high ionic conductivity and low interfacial resistance between the electrode and electrolyte.…”

Section: Introductionmentioning

confidence: 99%