The Experts below are selected from a list of 8475 Experts worldwide ranked by ideXlab platform
Hanill Yoo - One of the best experts on this subject based on the ideXlab platform.
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on the kinetic Decomposition Voltage of ternary oxides
Physical Chemistry Chemical Physics, 2018Co-Authors: Jakyu Chun, Manfred Martin, Hanill YooAbstract:In a previous article the authors reported the kinetic unmixing and Decomposition of the ternary oxide NiTiO3 by an externally applied Voltage. It was found [J. Chun, et al., J. Appl. Phys., 117, 2015, 124504] that while kinetic unmixing occurred for all magnitudes of the applied Voltage, kinetic Decomposition occurred only above a certain threshold Voltage Ukind. The experimentally determined value of Ukind, however, did not coincide with the thermodynamic expectation according to the definition by Gibbs (). In this work the kinetic Decomposition Voltage Ukind of a ternary oxide ABOν is theoretically derived and compared with the experimental results. It turns out that Ukind depends on the mobility ratio of the cations and agrees with observed results for the system of NiTiO3 within the error bounds.
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current vs Voltage behavior of hebb wagner ion blocking cell through compound bi1 46y0 54o3 Decomposition and Decomposition kinetics
Solid State Ionics, 2014Co-Authors: Kihan Kim, Taewon Lee, Wonhyo Joo, Hanill YooAbstract:Abstract The current (I) vs. Voltage (U) behavior of an asymmetric ion-blocking cell, Pt , a O 2 o | B i 1.46 Y 0.54 O 3 | Pt was examined, at a fixed temperature of 700 °C, over a U range far exceeding the Decomposition Voltage U⁎ relative to the reference oxygen activity a O 2 o of the electrolytic compound Bi1.46Y0.54O3. It has been observed that until before Decomposition, I vs. U behaves in a usual way, resulting in the partial electronic conductivity of the compound; Decomposition starts always at a Voltage a little over U⁎, indicating the presence of an energy barrier to Decomposition; once Decomposition starts at the blocking cathode, I vs. U immediately turns linear with a resistance much higher than the expectation, the total resistance of the electrolytic compound itself, indicating the presence of overwhelming anodic overpotential; Decomposition of the compound proceeds as (Bi0.73Y0.27)2O3 → (Bi0.73 ‐ δY0.27)2O3 ‐ 3δ + δ(2Bi + 1.5O2); open-circuit Voltage relaxation upon depolarization from - U(> - U⁎) always exhibits a time duration at − U⁎, indicating the reoxidation of reduced Bi. The I vs. U variation over the entire range of U as well as the Decomposition kinetics of the compound are quantitatively described.
Rika Hagiwara - One of the best experts on this subject based on the ideXlab platform.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Makoto Ue, Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika HagiwaraAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika Hagiwara, Yasuhiko ItoAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
Masayuki Takeda - One of the best experts on this subject based on the ideXlab platform.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Makoto Ue, Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika HagiwaraAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika Hagiwara, Yasuhiko ItoAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
Yasuhiko Ito - One of the best experts on this subject based on the ideXlab platform.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika Hagiwara, Yasuhiko ItoAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
Asao Kominato - One of the best experts on this subject based on the ideXlab platform.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Makoto Ue, Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika HagiwaraAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
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application of low viscosity ionic liquid to the electrolyte of double layer capacitors
Journal of The Electrochemical Society, 2003Co-Authors: Masayuki Takeda, Akiko Toriumi, Asao Kominato, Rika Hagiwara, Yasuhiko ItoAbstract:The performance of a double-layer capacitor (DLC) composed of activated carbon electrodes and 1--ethyl-3-methylimidazolium fluoride (EMIF).2.3HF, which has extremely high conductivity with low viscosity, was examined and compared with those using the popular ionic liquid EMIBF 4 , conventional aqueous electrolyte 35 wt % H 2 SO 4 , and nonaqueous electrolyte 1 M Et 3 MeNBF 4 /propylene carbonate. The DLC using EMIF.2.3HF showed an intermediate capacitance and internal resistance between the aqueous and nonaqueous electrolyte systems due to its intermediate double-layer capacitance and electrolytic conductivity. EMIF.2.3HF afforded much higher capacitance than EMIBF 4 even at low temperatures, however, it had a lower Decomposition Voltage (∼2 V), resulting in lower energy density. The capacitance of EMIF.2.3HF was extremely dependent on the applied Voltage.
