CONDUCTIVITY STUDY ON PLASTICIZED SOLID BIO-ELECTROLYTES CMC-NH¬4BR AND APPLICATION IN SOLID-STATE PROTON BATTERIES

2016 ◽  
Vol 78 (6-5) ◽  
Author(s):  
A. S. Samsudin ◽  
M. I. N. Isa
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Room Temperature ◽  
Electrical Impedance ◽  
Ionic Conduction ◽  
Ethylene Carbonate ◽  
Open Circuit ◽  
Electrical Impedance Spectroscopy ◽  
Casting Method ◽  
Solution Casting Method

This paper present the development of plasticized solid bio-electrolytes (PSBs) which has been accomplished by incorporating various composition of plasticizer namely ethylene carbonate (EC) with carboxy methylcellulose doped NH4Br via solution casting method. The plasticized polymer–salt ionic conduction of PSBs has been analyzed by electrical impedance spectroscopy. Plasticization using EC in PSBs system assists the enhancement of NH4Br dissociation and therefore increases the protonation process in the system. The highest ionic conductivity obtained for CMC−NH4Br containing with 25 wt. % NH4Br was achieved at 1.12 x 10-4 Scm-1 and improved to 3.31 x 10-3 Scm-1 when EC was added in PSBs system. The ionic conductivity-temperature for PSBs system was found to obey the Arrhenius relationships where the ionic conductivity increases with temperature. The solid-state proton batteries were assembled with the formation of Zn + ZnSO4.7H2O || highest conducting PSBs system || MnO2 and achieve with a maximum open circuit voltage (OCV) of 1.48 V at room temperature and showed good in rechargeablity performance with more than 10 cycles.

Ionic Conductivity and Dielectric Properties of CMC Doped NH4SCN Solid Biopolymer Electrolytes

2015 ◽  
Vol 1107 ◽  
pp. 230-235 ◽  
Author(s):  
N.A.M. Noor ◽  
M.I.N. Isa
Keyword(s):  
Dielectric Properties ◽  
Ionic Conductivity ◽  
Electrical Impedance ◽  
Ammonium Thiocyanate ◽  
Electrical Impedance Spectroscopy ◽  
Dielectric Studies ◽  
Arrhenius Law ◽  
Casting Method ◽  
Biopolymer Electrolytes ◽  
Solution Casting Method

In this work, solid biopolymer electrolytes (SBE) containing carboxymethyl cellulose (CMC) doped with ammonium thiocyanate (NH4SCN) were prepared via solution casting method. The ionic conductivity and dielectric properties of CMC-NH4SCN system were investigated by electrical impedance spectroscopy in the temperature range of 303-353 K. The dc conductivity shows that the highest ionic conductivity of 6.48 x 10-5 Scm-1 at ambient temperature was obtained when 25 wt.% of NH4SCN was incorporated. The temperature dependence of ionic conductivity revealed that CMC-NH4SCN system was discovered to obey Arrhenius law where the regression value is almost unity (R2≈1). Activation energy of CMC-NH4SCN system was found to decrease with the increment of NH4SCN concentration. The dielectric behaviour of the CMC-NH4SCN system have been analyzed using dielectric permittivity (ε*) and electrical modulus (M*) spectra. Results from dielectric studies showed a non-Debye behaviour of CMC-NH4SCN system.

Conductivity and Transport Properties Study of Plasticized Carboxymethyl Cellulose (CMC) Based Solid Biopolymer Electrolytes (SBE)

2013 ◽  
Vol 856 ◽  
pp. 118-122 ◽  
Author(s):  
A.S. Samsudin ◽  
M.I.N. Isa
Keyword(s):  
Ionic Conductivity ◽  
Carboxymethyl Cellulose ◽  
Room Temperature ◽  
Ethylene Carbonate ◽  
Casting Method ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Biopolymer Electrolytes ◽  
Arrhenius Relation ◽  
Solution Casting Method

Solid biopolymer electrolytes (SBE) comprising carboxymethyl cellulose (CMC) with NH4Br-EC were prepared by solution casting method. The samples were characterized by impedance spectroscopy (EIS) and sample containing 25wt. % of NH4Br exhibited the highest room temperature conductivity of 1.12 x 10-4S/cm for salted CMC based SBE system. The ionic conductivity increased to 3.31 x 10-3S/cm when 8 wt. % of ethylene carbonate (EC) was added to the highest conductivity. The conductivity-temperature of plasticized SBE system obeys the Arrhenius relation where the ionic conductivity increases with temperature. The influence of EC addition on unplasticized CMC based SBE was found to be dependent on the number and the mobility of the ions. This results revealed that the influence of plasticizer (EC) which was confirmed play the significant role in enhancement of ionic conductivity for SBE system.

Montmorillonite (MONT) Complex and their Application

1990 ◽  
Vol 210 ◽  
Author(s):  
Yu Wenhai ◽  
Liu Wanyu
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Room Temperature ◽  
Ionic Conduction ◽  
Electric Properties ◽  
High Ionic Conductivity ◽  
Polymer Complex ◽  
Solid State Battery ◽  
New Type

AbstractMontmorillonite(Mont) has been proved to be a kind of very promising solid electrolyte in recent years because of its good electric properties. It can be composed by polymer to prepare a mont-polymer complex which has high ionic conductivity and excellent plasticity. The film made of mont-polymer complex with room temperature ionic conduction has been used in solid state battery as solid electrolyte. It may be a new type of function material with futher application.

Ionic Conduction Mechanism of Solid Biodegradable Polymer Electrolytes Based Carboxymethyl Cellulose Doped Ammonium Thiocyanate

2015 ◽  
Vol 719-720 ◽  
pp. 114-118 ◽  
Author(s):  
M.I.N. Isa ◽  
Noor Azniza Mohd Noor
Keyword(s):  
Ionic Conductivity ◽  
Biodegradable Polymer ◽  
Polymer Electrolytes ◽  
Carboxymethyl Cellulose ◽  
Conduction Mechanism ◽  
Ionic Conduction ◽  
Ammonium Thiocyanate ◽  
Electrical Impedance Spectroscopy ◽  
Dielectric Data ◽  
Solution Casting Method

A conducting solid biodegradable polymer electrolytes based carboxymethyl cellulose (CMC) doped ammonium thiocyanate (NH4SCN) system with concentration in the range 0 – 25 wt.% of NH4SCN have been prepared via solution casting method. The impedance study of CMC-NH4SCN system was measured via Electrical Impedance Spectroscopy (EIS) in the temperature range 303 K – 353 K. The highest ionic conductivity at room temperature (303 K) is 6.48 x 10-5Scm-1for sample containing 25 wt.% NH4SCN. The temperature dependence of CMC-NH4SCN system was found to obey the Arrhenius behaviour where the ionic conductivity increases with increase of temperature. Dielectric data were analyzed using complex permittivity, Ɛifor sample with the highest ionic conductivity at various temperatures and found was non Debye behavior. The conduction mechanism of the charge carrier of CMC-NH4SCN system can be presented by quantum mechanical tunneling (QMT) model.

scholarly journals Conductivity and Dielectric Behaviour Studies of LiCF3SO3 Dissociation in L-Chitosan/PMMA-Based Polymer Electrolytes

2013 ◽  
Vol 9 (1) ◽  
Author(s):  
A.S.A Khiar ◽  
S. Mat Radzi ◽  
N. Abd Razak
Keyword(s):  
Relaxation Time ◽  
Dielectric Properties ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Electrical Modulus ◽  
Solution Casting ◽  
Casting Method ◽  
Wide Range ◽  
Solution Casting Method

Lauroyl-chitosan/poly(methylmethacrylate)-lithium trifluorosulfonate (LiCF3SO3) polymer electrolytes has been prepared by the solution casting method. Ionic conductivity analysis was conducted over a wide range of frequency between 50 Hz-1 MHz using impedance spectroscopy to evaluate the dielectric properties and conductivity of the sample. Sample with 30 wt% of LiCF3SO3 showed the highest conductivity of 7.59 ± 3.64 x 10-4 Scm-1 at room temperature. Complex permittivity for real (εr), imaginary (εi) and electrical modulus for real (Mr) and imaginary (Mi) part was determined and plotted. The relaxation time, τ for these samples was determined and the plot shows that τ decreases with conductivity of the complexes.

Proton Conducting Biopolymer Electrolytes Based on Starch Incorporated with Ammonium Thiocyanate

2015 ◽  
Vol 1112 ◽  
pp. 275-278 ◽  
Author(s):  
Fatin Nabella Zulkefli ◽  
S. Navaratnam ◽  
Azizah Hanom Ahmad
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Corn Starch ◽  
Ammonium Thiocyanate ◽  
Casting Method ◽  
Arrhenius Model ◽  
Proton Conducting ◽  
Biopolymer Electrolytes ◽  
Solution Casting Method ◽  
Biopolymer Electrolyte

In the present study, proton conducting biopolymer electrolyte systems based on corn starch and NH4SCN salt were prepared using solution casting method. The sample with 30 wt.% NH4SCN exhibited the highest ionic conductivity of 5.54 x 10-3S cm-1at room temperature. Temperature-dependence ionic conductivity relationship obeys Arrhenius model and minimum activation energy of 0.28 eV was obtained for the highest conducting composition.

Multi-variable Bayesian optimization for a new composition with high Na+ conductivity in the Na3PS4 family

2022 ◽  
Author(s):  
Jung Yong Seo ◽  
Sunggeun Shim ◽  
Jin-Woong Lee ◽  
Byung Do Lee ◽  
Sangwon Park ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Room Temperature ◽  
High Ionic Conductivity ◽  
Bayesian Optimization ◽  
Solid State Electrolyte ◽  
Aliovalent Substitution

Na3PS4 is an archetypal room-temperature (RT), Na+-conducting, solid-state electrolyte. Various compositional modifications of this compound via iso/aliovalent substitution are known to provide a high ionic conductivity (ion) that is comparable...

scholarly journals Remarkable Ionic Conductivity in a LZO-SDC Composite for Low-Temperature Solid Oxide Fuel Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2277
Author(s):  
Zhengwen Tu ◽  
Yuanyuan Tian ◽  
Mingyang Liu ◽  
Bin Jin ◽  
Muhammad Akbar ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Ionic Conductivity ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Ionic Conduction ◽  
Open Circuit ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Open Circuit Voltages ◽  
Composite Samples

Recently, appreciable ionic conduction has been frequently observed in multifunctional semiconductors, pointing out an unconventional way to develop electrolytes for solid oxide fuel cells (SOFCs). Among them, ZnO and Li-doped ZnO (LZO) have shown great potential. In this study, to further improve the electrolyte capability of LZO, a typical ionic conductor Sm0.2Ce0.8O1.9 (SDC) is introduced to form semiconductor-ionic composites with LZO. The designed LZO-SDC composites with various mass ratios are successfully demonstrated in SOFCs at low operating temperatures, exhibiting a peak power density of 713 mW cm−2 and high open circuit voltages (OCVs) of 1.04 V at 550 °C by the best-performing sample 5LZO-5SDC, which is superior to that of simplex LZO electrolyte SOFC. Our electrochemical and electrical analysis reveals that the composite samples have attained enhanced ionic conduction as compared to pure LZO and SDC, reaching a remarkable ionic conductivity of 0.16 S cm−1 at 550 °C, and shows hybrid H+/O2− conducting capability with predominant H+ conduction. Further investigation in terms of interface inspection manifests that oxygen vacancies are enriched at the hetero-interface between LZO and SDC, which gives rise to the high ionic conductivity of 5LZO-5SDC. Our study thus suggests the tremendous potentials of semiconductor ionic materials and indicates an effective way to develop fast ionic transport in electrolytes for low-temperature SOFCs.

scholarly journals Contribution Succinonitrile additive for Performa LiTFSi Solid Polymer Electrolytes for Li-Ion Battery

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Qolby Sabrina ◽  
Titik Lestariningsih ◽  
Christin Rina Ratri ◽  
Achmad Subhan
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Lithium Salt ◽  
Ionic Conduction ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Half Cell ◽  
Li Ion

Solid polymer electrolyte (SPE) appropriate to solve packaging leakage and expansion volume in lithium-ion battery systems. Evaluation of electrochemical performance of SPE consisted of mixture lithium salt, solid plasticizer, and polymer precursor with different ratio. Impedance spectroscopy was used to investigate ionic conduction and dielectric response lithium bis(trifluoromethane)sulfony imide (LiTFSI) salt, and additive succinonitrile (SCN) plasticizer. The result showing enhanced high ionic conductivity. In half-cell configurations, wide electrochemical stability window of the SPE has been tested. Have stability window at room temperature, indicating great potential of SPE for application in lithium ion batteries. Additive SCN contribute to forming pores that make it easier for the li ion to move from the anode to the cathode and vice versa for better perform SPE. Pore of SPE has been charaterization with FE-SEM. Additive 5% w.t SCN shows the best ionic conductivity with 4.2 volt wide stability window and pretty much invisible pores.

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