초임계수를 이용한 리튬망간산화물 입자합성

이주헌; 전관수; 최헌진; 조원일; 조병원; Joo Heon Lee; Kwan Soo Jun; Heon Jin Choi; Won Il Cho; Byung Won Cho

Journal of the Korean Industrial and Engineering Chemistry, Vol.12, No.8, 859-863, December, 2001

Export Citation

초임계수를 이용한 리튬망간산화물 입자합성

Synthesis of Lithium Manganese Oxide Particles in Supercritical Water

이주헌 ^†, 전관수¹, 최헌진², 조원일 ³, 조병원 ³

대구대학교 건설환경공학부, 경북 712-714
¹영남대학교 환경공학과, 경북 712-749
²한국과학기술연구원 복합기능세라믹 연구센터, 서울 136-791
³한국과학기술연구원 전지/연료전지 연구센터, 서울 136-791

Joo Heon Lee^†, Kwan Soo Jun¹, Heon Jin Choi², Won Il Cho³, and Byung Won Cho³

Division of Architectural, Civil and Environmental Engineering, Taegu University, Kyungbuk 712-714, Korea
¹Department of Environmental Engineering, Yeungnam University, Kyungbuk 712-749, Korea
²Multifunctional Ceramics Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
³Battery and Fuel Cell Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea

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초록

초임계수 하에서 망간산화물과 리튬망간산화물 입자의 합성에 대하여 조사하였다. 망간과 리튬의 원료로는 Mn(NO3)2·6H2O와 LiOH/LiNO3를 각각 선택하여 LiMn2O4 입자를 합성하였다. 짧은 반응시간(13 ~ 30 sec)에도 불구하고 높은 결정화도를 갖는 입자가 생성됨이 관찰되었다. 초임계수 공정에서는 전환율, 입자크기, 특정 산화물의 선택도는 반응조건에 의존하는 것이 관찰되었다. LiMn2O4 입자의 선택적인 합성은 특정 반응조건에서 가능하였다.

Synthesis of manganese oxide and lithium manganese oxide particles in supercritical water has been studied. Mn(NO3)2·6H2O and LiOH/LiNO3 was selected as the Mn and Li sources, respectively, and LiMn2O4 particles have been synthesized. It was observed that fine particles with a high degree of crystallinity was formed in spite of short residence times (13 ~ 30 seconds). It was also observed that the conversion, particle size and selectivity to a specific oxide were dependent of the reaction conditions of the supercritical water process. It was possible to selectively synthesize the LiMn2O4 particles under a specific condition described in this study.

Keywords:supercritical water;fine particles;synthesis;LiMn2O4

[References]

Adschiri T, Kanazawa K, Arai K, J. Am. Ceram. Soc., 75, 1019 (1992)
Adschiri T, Kanazawa K, Arai K, J. Am. Ceram. Soc., 75, 2615 (1992)
Hakuta Y, Terayama H, Onai S, Adschiri T, Arai K, Proc. 4th Int. Symp. Supercri. Fluids, May 11-14, Sendai, Japan (1997)
Hakuta Y, Adschiri T, Suzuki T, Chida T, Senio K, Arai K, J. Am. Ceram. Soc., 81, 2461 (1998)
Lee JH, Park YW, J. Korean Ind. Eng. Chem., 10(1), 173 (1999)
Hakuta Y, Senio K, Ura H, Adschiri T, Takizawa H, Arai K, J. Mater. Chem., 9, 2671 (1999)
Hakuta Y, Yamamoto Y, Okada KI, Adschiri T, Arai K, Kanamura K, Goto A, Hamagami J, Umegaki T, The 40th Barrery Symposium in Japan, Kyoto, 251, November 14-16 (1999)
Bailar JC, Emeleus HJ, Nyholm SR, Trotman-Dickenson AF, "Comprehensive Inorganic Chemistry," Vol. 3, Pergamon Press, New York, 798 (1976)

[Referenced By]

[Related Articles]

[1] Adschiri T, Kanazawa K, Arai K, J. Am. Ceram. Soc., 75, 1019 (1992)

[2] Adschiri T, Kanazawa K, Arai K, J. Am. Ceram. Soc., 75, 2615 (1992)

[3] Hakuta Y, Terayama H, Onai S, Adschiri T, Arai K, Proc. 4th Int. Symp. Supercri. Fluids, May 11-14, Sendai, Japan (1997)

[4] Hakuta Y, Adschiri T, Suzuki T, Chida T, Senio K, Arai K, J. Am. Ceram. Soc., 81, 2461 (1998)

[5] Lee JH, Park YW, J. Korean Ind. Eng. Chem., 10(1), 173 (1999)

[6] Hakuta Y, Senio K, Ura H, Adschiri T, Takizawa H, Arai K, J. Mater. Chem., 9, 2671 (1999)

[7] Hakuta Y, Yamamoto Y, Okada KI, Adschiri T, Arai K, Kanamura K, Goto A, Hamagami J, Umegaki T, The 40th Barrery Symposium in Japan, Kyoto, 251, November 14-16 (1999)

[8] Bailar JC, Emeleus HJ, Nyholm SR, Trotman-Dickenson AF, "Comprehensive Inorganic Chemistry," Vol. 3, Pergamon Press, New York, 798 (1976)