polymeric electrolytes
Recently Published Documents


TOTAL DOCUMENTS

182
(FIVE YEARS 11)

H-INDEX

29
(FIVE YEARS 2)

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 822
Author(s):  
Abdullah F. Al Naim

Recently, the electrical conductive electrolyte based on flexible polymeric films have been attracted much attentions, due to their applications in batteries, thermoelectrics, temperature sensors and others. In this regard, two polymeric electrolytes (PVA/LiCl) and (PVA/AgNO3) films have been engineered and the influence of the dopants and the annealing temperature on the structural, morphology and ac and dc conductivities is extensively studied. It was found that the films crystallinity has the order PVA/AgNO3 (49.44%) > PVA (38.64%) > PVA/LiCl (26.82%). Additionally, the dc conductivity of the films is increased with embedding the dopants into the PVA as the order PVA/AgNO3 (13.7 × 10−4 S/cm) > PVA/LiCl (1.63 × 10−5 S/cm) > PVA (1.71 × 10−6 S/cm) at 110 °C. It is also found that there is a sharp increase for σac as the frequency increases up to 107 Hz and also as the temperature increases to 110 °C. However, the order of increasing the σac is PVA/LiCl (155 × 10−3 S/cm) > PVA/AgNO3 (2.5 × 10−5 S/cm) > PVA (2 × 10−6 S/cm) at f = 107 Hz and 110 °C. The values of exponent are 0.870, 0.405 and 0.750 for PVA, PVA/AgNO3 and PVA/LiCl, respectively, and it is increased as the temperature increases for PVA and PVA/LiCl, but it is decreased for PVA/AgNO3. The activation energies Ea are 0.84, 0.51 and 0.62 eV for PVA, PVA/AgNO3 and PVA/LiCl, respectively. Moreover, the values of activation energy for charge carrier migration Em are 0.60, 0.34 and 0.4 eV for PVA, PVA/AgNO3 and PVA/LiCl, respectively. By using a simple approximation, the carrier concentration, carrier mobility and carrier diffusivity are calculated, and their values are increased as the temperature increases for all samples, but they are higher for PVA/LiCl than that of PVA/AgNO3. These results are discussed in terms of some obtained parameters such as hopping frequency, free volume and chain mobility. Interestingly, the conduction mechanism was found to be the electronic charge hopping for PVA and PVA/LiCl films, however it was found to be the ionic charge diffusion (n < 0.5) for PVA/AgNO3 film. It has been predicted that these electrolytic films have a prospective applications in batteries design, temperature sensors, electronic and wearable apparatuses at an affordable cost.


2020 ◽  
Vol 11 (12) ◽  
pp. 2070-2079 ◽  
Author(s):  
Marco Viviani ◽  
Niels Laurens Meereboer ◽  
Ni Luh Putu Ananda Saraswati ◽  
Katja Loos ◽  
Giuseppe Portale

A simple and effective strategy to synthesize a new class of PAGE-based polymer electrolytes containing lithium and magnesium salts.


2019 ◽  
Vol 58 (50) ◽  
pp. 18146-18149 ◽  
Author(s):  
Na Wu ◽  
Ya‐Ru Shi ◽  
Shuang‐Yan Lang ◽  
Jin‐Ming Zhou ◽  
Jia‐Yan Liang ◽  
...  

2019 ◽  
Vol 131 (50) ◽  
pp. 18314-18317 ◽  
Author(s):  
Na Wu ◽  
Ya‐Ru Shi ◽  
Shuang‐Yan Lang ◽  
Jin‐Ming Zhou ◽  
Jia‐Yan Liang ◽  
...  

2019 ◽  
Vol 31 (12) ◽  
pp. 4598-4604 ◽  
Author(s):  
Lihua Chen ◽  
Shruti Venkatram ◽  
Chiho Kim ◽  
Rohit Batra ◽  
Anand Chandrasekaran ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document