리튬-암모니아(Li(NH3)n) 용액을 이용한 열전기적 특성 실험

박한우; 김지범; 전준현; Hanwoo Park; Jibeom Kim; Joonhyeon Jeon

Korean Chemical Engineering Research, Vol.49, No.2, 263-270, April, 2011

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리튬-암모니아(Li(NH3)n) 용액을 이용한 열전기적 특성 실험

Experimental Study of Thermo-electric material using Lithium-Ammonia(Li(NH3)n) Solution

박한우, 김지범, 전준현^†

동국대학교-서울 정보통신공학과, 100-715 서울특별시 중구 필동 3가 26

Hanwoo Park, Jibeom Kim, and Joonhyeon Jeon^†

Dept. of Information & Communications Engineering, Dongguk University - Seoul, 26 Pil-dong 3-ga, Jung-gu, Seoul 100-715, Korea

E-mail:

초록

본 논문의 목적은 리튬-암모니아 솔루션(Li(NH3)n)의 실험을 통하여 암모니아물질의 임계점인 -40 ℃ 근처에서의 열전특성을 분석하고 이를 증명하는 것이다. 실험 결과 0.58 MPM~1.87 MPM을 갖는 리튬-암모니아 솔루션(Li(NH3)n)은 온도차(ΔT=0~15 ℃)에서 전류가 전압에 비례하는 열전전력을 발생시킨다는 사실을 확인하였다. 본 논문은 열전 물질 개발에 새로운 방향을 제시할 것이다.

The aim of this paper is, through the experiment of Lithium-Ammonia solutions (Li(NH3)n), to analyze and verify a thermoelectric-conversion property at near Ammonia-boiling point (-40℃ ). The experiment results show that the solutions with 0.58 MPM~1.87MPM generate thermoelectric power at temperature difference (ΔT=0~15 ℃) where Current is constantly proportional to Voltage. This paper provides a new insight into the development of a thermoelectric material.

Keywords:Metal Ammonia;Lithium Ammonia;Thermoelectric Transformation Seebeck Effect;Solvated Electron;Thermal Electric

[References]

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[1] Park JP, Heo WH, “Technical Trend of Thermoelectric Cooling in Semiconductor Materials,” RIST., Research Report, http://www.rist.re.kr, 1-29 (2004)

[2] Jovanovic V, Ghamaty S, Krommenhoek D, Bass JC, “High Coefficient of Performance Quantum well Thermoelectric Nano Cooler,” ASME., Proceedings of IPACK2007, 1-7 (2007)

[3] Edwards PP, Journal of Superconductivity., “Polarons, Bipolarons and Possible High-Tc Superconductivity in Metal-Ammonia Solutions,”, 13(6), 867 (2000)

[4] Cohen MH, Thompson JC, Advances in physics., “The Electronic and Ionic Structures of Metal-ammonia Solutions", 17, 857 (1968)

[5] Miles MH, Harris WS, J. Electrochem. Soc., “Decomposition Reaction of Concentrated lithium-Ammonia Solutions,”, 121, 459 (1974)

[6] Hayama S, Skipper NT, Wasse JC, Thompson H, J. Chem. Phys., “Xray Diffraction Studies of Solutions of Lithium in Ammonia: The Structure of the Metal-Nonmetal Transition”, 116(7), 2991 (2002)

[7] Joshua J, Morrel HC, Phys. Rev. B., “Metal-nonmetal Transition in Metalammonia Solutions", 13(4), 1548 (1976)

[8] THOMPSON JC, Reviews of modern physics., “Metal-Nonmetal Transition in Metal-Ammonia Solutions", 40(4), 704 (1968)

[9] Chuev GN, Quemerais P, Crain J, J. Chem. Phys., “Nature of the Metalnonmetal Transition in Metal-ammonia Solutions. I. Solvated Electrons at Low Metal Concentrations", 127 (2007)

[10] Ottewill GA, Education In Chemistry., “Metal Ammonia Solutions-pure Chemistry", 36(2), 48 (1999)

[11] Kraus CA, Am. Chem. Soc., “Solutions of Metals in Non-metallic Solvents; IV. Material Effects Accompanying the Passage of An Electrical Current Through Solutions of Metal in Liquid Ammonia. Migration Experiments,”, 30, 1323 (1908)

[12] Hahne S, Krebs P, Schindewolf U, J. Chem., “Equilibrium Model for the Interpretation of the Conduction Properties of Metal-Ammonia Solutions", 55, 2211 (1977)