Ionic Conductivity and Dielectric Properties of LiBF4 Doped PMMA/ENR 50 Filled Acid Modified SiO2 Electrolytes

Zamri, Sharil Fadli Mohamad; Latif, Famiza Abdul; Ali, Abdul Karim; Ibrahim, Ruhani; Kamaluddin, Norashima; Hadip, Fitrah

doi:10.1016/j.protcy.2014.09.059

Cited by 20 publications

(7 citation statements)

References 14 publications

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“…A rapid decrease in dielectric constant may be noticed above a particular frequency. The higher value of ε' at lower frequencies is due to the orientation of polar groups, ions, and space charges polarization at these frequencies [45]. However, in the high frequency range, the dipoles are unable to align themselves in the direction of the applied field, thus they oscillating begins to lag behind and hence the values of the dielectric constant decreases [46].…”

Section: Ionic Conductivity and Activation Energy Measurementsmentioning

confidence: 97%

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Verma¹,

Sahu²

2015

Ionics

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Solid nanocomposite polymer electrolytes based on polyethylene oxide (PEO), AgNO 3 as salt, and nanosized Fe 2 O 3 (less than 50 nm size) as filler are prepared by hot press method. In (100-x) PEO:xAgNO 3 system (where x=5≤x≤ 50 wt%), the solid polymer electrolyte 90PEO:10AgNO 3 gives highest ionic conductivity. This composition is further used as host matrix and Fe 2 O 3 as filler for the preparation of solid nanocomposite polymer electrolytes (100-x) (90PEO:10AgNO 3 ):xFe 2 O 3 (where x=5≤x≤30 wt%). The real impedance (Z') and imaginary impedance (Z") of the samples are analysed using LCR meter. The maximum ionic conductivity is observed for 10 wt% of filler Fe 2 O 3. The optimum conducting composition 90(90PEO:10AgNO 3 ):10Fe 2 O 3 is used for further study. The dielectric response of the samples is analysed using dielectric constant (ε'), dielectric loss (ε"), loss tangent (tanδ), and real and imaginary part of electric modulus (M' and M"). The ionic conductivity and dielectric response of the solid nanocomposite polymer electrolytes are studied within the frequency range of 100 Hz-5 MHz and within the temperature range of 300-323 K. It is observed that the dielectric constant rises sharply towards low frequencies due to electrode polarization effects. The maxima of the loss tangent (tan δ) shift towards higher frequencies with increasing temperature. The enhancement in ionic conductivity is observed when nanosized Fe 2 O 3 filler is added into the solid polymer electrolyte.

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Section: Ionic Conductivity and Activation Energy Measurementsmentioning

confidence: 97%

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Verma¹,

Sahu²

2015

Ionics

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“…Nilai pemalar ε' didapati menurun pada frekuensi yang tinggi kerana pergerakan ulang-alik dwikutub menjadi lambat kerana tidak sejajar dengan medan elektrik yang digunakan. Fenomena ini dikenali sebagai proses santaian elektrik (Zamri et al 2014). Proses santaian elektrik ini adalah disebabkan oleh penurunan pengumpulan cas yang menyebabkan penurunan pemalar dielektrik dan kehilangan pemalar dielektrik.…”

Section: Kajian Pemalar Dielektrik Kebergantungan Frekuensiunclassified

“…Nilai kehilangan pemalar ε" yang menurun pada frekuensi tinggi pula adalah disebabkan oleh pembalikan berkala medan yang tinggi pada medan di bahagian permukaan. Kesan ion terhadap modulus elektrik menurun disebabkan oleh penurunan penyerapan ion dalam polimer elektrolit (Zamri et al 2014).…”

Section: Kajian Pemalar Dielektrik Kebergantungan Frekuensiunclassified

Kesan Garam Litium Nitrat terhadap Sifat Elektrokimia Karboksimetil Kitosan

Mobarak

Jantan

Dzulkurnain

et al. 2018

JSM

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Karboksimetil kitosan menunjukkan potensi untuk digunakan sebagai polimer induk bagi aplikasi elektrolit polimer pepejal. Kesan garam litium nitrat terhadap sifat elektrokimia elektrolit polimer pepejal berasaskan karboksimetil kitosan telah dijalankan. Elektrolit polimer pepejal berasaskan karboksimetil kitosan disediakan melalui teknik pengacuan larutan dengan nisbah garam litium nitrat (LiNO 3) yang berbeza. Pencirian filem telah dijalankan dengan menggunakan spektroskopi inframerah transformasi Fourier-pantulan penuh kecil (ATR-FTIR) dan Spektroskopi Impedans Elektrokimia (EIS) bagi penentuan interaksi kimia dan sifat elektrokimia polimer elektrolit tersebut. Spektrum ATR-FTIR menunjukkan ion litium cenderung untuk berinteraksi dengan kumpulan karbonil dan kumpulan ester dalam struktur karboksimetil kitosan. Kekonduksian ion tertinggi yang dicapai adalah 8.44 × 10-4 S cm-1 dengan kepekatan garam 30 bt. % LiNO 3 pada suhu bilik dan 5.25 × 10-3 S cm −1 pada suhu 70°C. Filem karboksimetil kitosan-30% LiNO 3 mencapai kestabilan secara elektrokimia sehingga 2.94 V. Keputusan kajian yang diperoleh menunjukkan elektrolit polimer pepejal berasaskan karboksimetil kitosan memberi satu tarikan baru bagi aplikasi bateri ion litium.

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“…[11][12][13][14] Currently used inorganic fillers include inert fillers with lower ionic conductivity and active fillers with higher ionic conductivity, also known as fast ion conductors. 15 Li 7 La 3 Zr 2 O 12 , 16 LiAlO 2 , 17 Li 1.5 Ge 2 (PO 4 ) 3 , 18 Li 3 N, 19 Al 2 O 3 , 20 TiO 2 , 21 ZrO 2 , 22 SiO 2 , 23 ferroelectric material, 24,25 etc., can properly improve the ionic conductivity and material stability. However, whether active or inert fillers are added to the polymer in the form of randomly distributed nanoparticles, the agglomeration of fillers will be caused by the excessive addition of fillers, which leads to long migration paths and high transport resistance of lithium ion in electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Effects of surface lithiated TiO ₂ nanorods on room‐temperature properties of polymer solid electrolytes

Song

Jing

et al. 2020

Int J Energy Res

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Summary Polymer solid electrolyte with high ionic conductivity at room‐temperature is most likely to be widely used in solid‐state lithium batteries. In this work, the novel surface lithiated TiO2 nanorods were firstly used as ionic conductor in polymer solid electrolyte. The surface lithiated TiO2 nanorods‐filled polypropylene carbonate polymer composite solid electrolyte (CSE) has an uniform composite structure with a thickness of about 60 μm. The ionic conductivity at room‐temperature is 1.21 × 10−4 S cm−1 and the electrochemical stability window is up to 4.6 V (vs Li+/Li). The assembled NCM622/CSE/Li solid‐state battery shows a stable cycle performance with a retention capacity of 120 mAh g−1 after 200 cycles at the current density of 0.3 C and a high coulomb efficiency of 99%. Compared with TiO2 particles, this novel surface lithiated TiO2 nanorods can provide more continuous ion transport channels and more Lewis acid‐base reactive sites, provide a novel way to enhance the lithium ion transport in polymer solid electrolyte.

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Ionic Conductivity and Dielectric Properties of LiBF4 Doped PMMA/ENR 50 Filled Acid Modified SiO2 Electrolytes

Cited by 20 publications

References 14 publications

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Kesan Garam Litium Nitrat terhadap Sifat Elektrokimia Karboksimetil Kitosan

Effects of surface lithiated TiO ₂ nanorods on room‐temperature properties of polymer solid electrolytes

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Ionic Conductivity and Dielectric Properties of LiBF4 Doped PMMA/ENR 50 Filled Acid Modified SiO2 Electrolytes

Cited by 20 publications

References 14 publications

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Ionic conductivity and dielectric behavior of PEO-based silver ion conducting nanocomposite polymer electrolytes

Kesan Garam Litium Nitrat terhadap Sifat Elektrokimia Karboksimetil Kitosan

Effects of surface lithiated TiO 2 nanorods on room‐temperature properties of polymer solid electrolytes

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Effects of surface lithiated TiO ₂ nanorods on room‐temperature properties of polymer solid electrolytes