Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Eui Chol Shin"'
Autor:
Thi Lan Tran, Jong-Sook Lee, Dang Thanh Nguyen, Hung Tai Nguyen, Eui-Chol Shin, Soon-Hyung Kang
Publikováno v:
Journal of the Korean Ceramic Society. 55:244-260
Publikováno v:
Journal of the Korean Ceramic Society. 53:511-520
Electrolyte-supported symmetric Ni-YSZ cermet electrodes of ca. 23 ㎛ were prepared by screenprinting and the impedance was measured as a function of humidity from 2% to 90% balanced in H₂ at a total flow rate of 50 sccm. The Ni felt current colle
Autor:
Jong-Sook Lee, Won Bin Im, Dong Chun Cho, Donghwa Lee, Su Hyun Moon, Eui Chol Shin, Yoon Hwa Kim
Publikováno v:
Solid State Ionics. 289:55-71
Conductivity, calorimetry, and in-situ XRD can be closely interrelated with each other in terms of the sodium ion ordering and rearrangements in NASICON structure. An intermediate phase transition at 103 °C, not associated with heat effects, is evid
Autor:
Ji Haeng Yu, Jong-Sook Lee, Hyun-Ho Seo, Sun-Dong Kim, Pyung-An Ahn, Sang-Kuk Woo, Eui-Chol Shin, Dang Thanh Nguyen
Publikováno v:
Solid State Ionics. 277:1-10
The impedance behavior of the archetypal Ni–YSZ/YSZ/LSM–YSZ solid oxide cells was investigated in reversible operation at different humidity conditions up to 90%. The major electrode polarizations of the full cell at 850 °C are identified with t
Publikováno v:
Journal of Solid State Electrochemistry. 19:2457-2464
Motivated by the recent work on β″-alumina polycrystalline ceramics, we revisit the frequency dispersion behavior of AgI. Series of admittance and capacitance Bode plots at different temperatures revealed the presence of well-defined parallel capa
Publikováno v:
Solid State Ionics. 272:60-73
A high temperature van der Pauw method using a bulk disk sample was applied for a more reliable kinetic investigation in a protonic ceramic conductor, barium zirconate doped with 20 m/o yttrium. Similarly activated faster hydrogenation and slower oxy
Publikováno v:
International Journal of Hydrogen Energy. 39:20764-20770
ZnO films on ITO substrates were grown in the nitrate solution at 90 °C upon the seed layer prepared by bias-assisted deposition and thermal annealing at 500 °C. High concentration of the nitrate solution of 0.5 M compared with 0.1 M results in the
Autor:
Yang Kee-Deok, Jaekook Kim, Dong-Chun Cho, Shu Yamaguchi, Jinhyung Beum, Kim Soo-Seok, Jee-Hoon Kim, Jong-Sook Lee, Eui-Chol Shin, Sansudae Lim
Publikováno v:
Solid State Ionics. 264:22-35
AC 4-probe method using Au electrodes distinguished the sample conductivity of polycrystalline β ″ alumina at high temperature. Bode plots of AC 2-probe measurements revealed temperature-independent capacitance plateaus and the power-law frequency
Autor:
Jaekook Kim, Vinod Mathew, Eui-Chol Shin, Jihyeon Gim, Jong-Sook Lee, Alok Kumar Rai, Hyun-Ho Seo, Om Parkash, K. D. Mandal
Publikováno v:
Ceramics International. 40:181-189
Effect of praseodymium (Pr 3+ ) substitution at Ca 2+ site in calcium copper titanate, CaCu 3 Ti 4 O 12 (CCTO), has been investigated. Compositions with x =0.10 and 0.20 were synthesized in the system Ca (1−3 x /2) Pr x Cu 3 Ti 4 O 12 by chemical r
Autor:
Sungjin Kim, Trang Vu Thi, Jihyeon Gim, Alok Kumar Rai, Jaekook Kim, Eui-Chol Shin, Jong-Sook Lee, Ly Tuan Anh
Publikováno v:
Journal of Power Sources. 243:891-898
Undoped and 2 wt% vanadium (V 5+ ) doped TiO 2 samples are prepared in polyol medium by low-temperature solvothermal method. The as-prepared samples are annealed at 400 °C for 5 h in an air atmosphere to increase the crystallinity. The XRD pattern s