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RuO2-SnO2-IrO2/Ti 계 혼합산화물 전극의 양극산화에 대한 회토류원소의 영향
윤경석(Kyung Suk Yun),이진식(Jin Sik Lee),이철태(Chul Tae Lee) 한국화학공학회 1997 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.35 No.2
Adding of rare earth elements such as Ho₂O₃, Sm₂O₃, Er₂O₃, Y₂O₃, Nd₂O₃and La₂O₃ on the RuO₂-SnO₂-IrO₂/Ti mixed oxide electrode enhanced the durability of this mixed oxide electrode, respectively. In every case of the addition of various rare earth element, durability was enhanced and oxygen evolution overvoltage was decreased in order of Ho₂O₃>Sm₂O₃>Er₂O₃,>Y₂O₃>Nd₂O₃>La₂O₃. When 1 wt% of Ho₂O₃ oxide was doped especially, the oxygen evolution overvoltage of that electrode become lower than that of the mixed oxide electrode itself.
김형선,조병원,윤경석,전해수 ( Hyung Sun Kim,Byung Won Cho,Kyung Suk Yun,Hai Soo Chun ) 한국공업화학회 1996 공업화학 Vol.7 No.2
Li/V_6O_(13) 전지의 성능과 poly(acrylonitrile)[PAN]계 폴리머 전해질의 전기화학적인 성질을 조사 하였다. 폴리머 전해질의 이온 전도도는 상온에서 2.3×10^(-3)S/㎝를 보였으며 리튬 전극과의 상용성도 우수하였다 또한 4.3V(vs. Li^+/Li)까지의 전기화학적인 안정성이 있는 것으로 나타났다. Li/V_6O_(13) 전지 반응은 V_6O_(13) 전극과 폴리머 전해질간의 계면저항이 지배적 이었다. V_6O_(13)내의 리튬 이온의 확산 계수값은 2.7×10^(-9)∼4.2×10^(-8)㎠/sec로 나타났다. V_6O_(13) 활물질의 이용률은 C/8(50㎂/㎠)에서 95%였으며 C/4(100㎂/㎠)에서는 82%로 각각 나타났다. The performance of Li/V_6O_(13) cell and the electrochemical properties of polymer electrolyte based on poly(acrylonitrile)[PAN] was investigated. The ionic conductivity of polymer electrolyte showed 2.3×10^(-3)S/㎝ and the compatibility with lithium electrode was excellent. Also, it showed the electrochemical stability up to 4.3V(vs. Li^+/Li). The cell reaction of Li/V_6O_(13) was dominated by the interfacial resistance between V_6O_(13) electrode and polymer electrolyte. The diffusion coefficient of lithium ion within V_6O_(13) was 2.7×10^(-9)∼4.2×10^(-8)㎠/sec. The utilization of V_6O_(13) active material was 95% at C/8(50㎂/㎠) and 82% at C/4(100㎂/㎠), respectively.
RuO2 - SnO2 - IrO2 /Ti 계 혼합산화물 전극의 양극산화 특성
이진식,이철태,윤경석 ( Jin Sik Lee,Chul Tae Lee,Kyung Suk Yun ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.1
Anodic oxidation characteristics of RuO₂-SnO₂-IrO₂/Ti type mixed oxide electrode was investigated to find a new type electrode with the lower oxygen overpotential and higher stability for chloro-alkali industrial use. Electrochemical characteristics of this electrode are measured by Tafel plot and polarization curves in acidic solution, and for the application as real electrode in industrial electrolysis, stability of electrode in ZnSO₄ solution by using the long time was investigated. Mixed oxide electrode containing SnO₂ of 20 ㏖% exhibited oxygen evolution overpotential much lower than that on previous RuO₂ film electrodes. Also the addition to SnO₂increased the stability.
Li/V<sub>6</sub>O<sub>13</sub> 리튬 폴리머 전지의 성능
김형선,조병원,윤경석,전해수,Kim, Hyung-Sun,Cho, Byung-Won,Yun, Kyung-Suk,Chun, Hai-Soo 한국공업화학회 1996 공업화학 Vol.7 No.2
The performance of The performance of $Li/V_6O_{13}$ cell and the electrochemical properties of polymer electrolyte based on poly(acrylonitrile)[PAN] was investigated. The ionic conductivity of polymer electrolyte showed $2.3{\times}10^{-3}S/cm$ and the compatibility with lithium electrode was excellent. Also, it showed the electrochemical stability up to 4.3V(vs. $Li^+/Li$). The cell reaction of $Li/V_6O_{13}$ was dominated by the interfacial resistance between $V_6O_{13}$ electrode and polymer electrolyte. The diffusion coefficient of lithium ion within $V_6O_{13}$ was $2.7{\times}10^{-9}{\sim}4.2{\times}10^{-8}cm^2/sec$. The utilization of $V_6O_{13}$ active material was 95% at C/8($50{\mu}A/cm^2$) and 82% at C/4($100{\mu}A/cm^2$), respectively. $Li/V_6O_{13}$ 전지의 성능과 poly(acrylonitrile)[PAN]계 폴리머 전해질의 전기화학적인 성질을 조사 하였다. 폴리머 전해질의 이온 전도도는 상온에서 $2.3{\times}10^{-3}S/cm$를 보였으며 리튬 전극과의 상용성도 우수하였다. 또한 4.3V(vs. $Li^+/Li$)까지의 전기화학적인 안정성이 있는 것으로 나타났다. $Li/V_6O_{13}$ 전지 반응은 $V_6O_{13}$ 전극과 폴리머 전해질간의 계면 저항이 지배적 이었다. $V_6O_{13}$내의 리튬 이온의 확산 계수값은 $2.7{\times}10^{-9}{\sim}4.2{\times}10^{-8}cm^2/sec$로 나타났다. $V_6O_{13}$ 활물질의 이용률은 C/8($50{\mu}A/cm^2$)에서 95%였으며 C/4($100{\mu}A/cm^2$)에서는 82%로 각각 나타났다.