Na-ion conducting filler embedded 3D-electrospun nanofibrous hybrid solid polymer membrane electrolyte for high-performance Na-ion capacitor

被引:20
|
作者
Maurya, Dheeraj Kumar [1 ]
Dhanusuraman, Ragupathy [2 ]
Guo, John Zhanhu [3 ]
Angaiah, Subramania [1 ]
机构
[1] Pondicherry Univ, Ctr Nanosci & Technol, Electromat Res Lab, Pondicherry 605014, India
[2] Natl Inst Technol Puducherry, Dept Chem, Nano Electrochem Lab NEL, Karaikal 609609, India
[3] Univ Tennessee, Dept Chem & Biomol Engn, Integrated Composites Lab ICL, Knoxville, TN 37996 USA
关键词
Na-ion capacitor; Electrospinning; Polymer electrolyte; 3D-nanofibrous membrane; Ionic conductivity; DOPED NA2ZN2TEO6; SODIUM;
D O I
10.1007/s42114-022-00604-1
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Synergistic coupling of polymer with highly Na+ conducting ceramics is an effective approach to alleviate the poor thermal stability and low ionic conductivity challenges of an electrolyte. Herein, we have reported a rational design of Na2Zn1.97Ca0.03TeO6 (NZCTO) nanofillers-reinforced poly(vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP)-based 3D-electrospun nanofibrous hybrid polymer membrane (ESHPM) as a separator cum electrolyte obtained by an electrospinning technique. Physico-chemical properties of NZCTO and ESHPMs were characterized for its morphology, porosity and electrolyte uptake measurement, crystallinity, thermal stability, dimensional stability, operating potential window, and ionic conductivity. ESHPME immobilizing a liquid electrolyte solution [1 M of sodium hexafluorophosphate (NaPF6)] in ethylene carbonate (EC)/dimethyl carbonate (DMC), 1/1v/v) exhibited an excellent ionic conductivity (sigma(RT) ? 1.47 x 10(-3) S cm(-1)). A Na-ion capacitor (NIC) comprising high-capacity NaCo0.7Al0.3O2 (NCAO) and rapid ion-absorbing activated carbon (AC)-based electrodes with ESHPM (10 wt.% NZCTO) electrolyte delivers the specific capacitance of 103.57 Fg(-1) at the current density of 1 Ag-1. This NIC retains 89% of its initial capacitance up to 1000 charge-discharge cycles. Furthermore, NIC demonstrated a maximum energy and power density of ? 36.82 W h kg(-1) and ? 5.71 kW kg(-1), respectively. This research promises to develop high-performing NICs with high energy and power densities.
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页数:10
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