서지주요정보
고상반응법에 의한 리튬 2차 전지용 양극재료 $LiFePO_4$ 의 합성과 최적화에 관한 연구 = Synthesis and optimization of $LiFePO_4$ by solid state reaction for lithium secondary battery cathode material
서명 / 저자 고상반응법에 의한 리튬 2차 전지용 양극재료 $LiFePO_4$ 의 합성과 최적화에 관한 연구 = Synthesis and optimization of $LiFePO_4$ by solid state reaction for lithium secondary battery cathode material / 김구연.
저자명 김구연 ; Kim, Gu-Yeon
발행사항 [대전 : 한국과학기술원, 2004].
Online Access 비공개원문

소장정보

등록번호

8015063

소장위치/청구기호

학술문화관(문화관) 보존서고

MAME 04003

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Recently, the demand of Li-ion secondary battery is increasing with the growth of the mobile electronic products industries such as communication devices, cellular phone, notebook, and so on. In this situation, the mobile batteries play the very important role. Lithium cobalt oxide secondary battery is first developed at SONY in 1991. But it has problems such as high cost, thermal instability and so on, despite of its good performance. Thus the research for finding new cathode material that can replace the $LiCoO_2$ is proceeded actively. At present, the possible candidate material is $LiFePO_4$ that is low-priced, thermally stable and environmentally benign because of using Fe, not Co. But its synthesis method is so difficult due to unstable $Fe^{2+}$ ions. In this study, $LiFePO_4$ powder is synthesized in hydrogen reduction atmosphere by solid state reaction in order to suppress the oxidation of $Fe^{2+}$ ions. Synthesized powder is measured by SEM, XRD for microstructure, and by particle size analysis for diffusion- limited current dependency with respect to the calcination temperature. In the case of $LiFePO_4$, because the obstacle of the commercialization is the low conductivity of the $Li^+$ ions and the electrons, in order to enhance the conductivity, we synthesized powder by carbon mixing & post heat treatment and analyzed the electrochemical properties.

서지기타정보

서지기타정보
청구기호 {MAME 04003
형태사항 iv, 64 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Gu-Yeon Kim
지도교수의 한글문표기 : 김호기
지도교수의 영문표기 : Ho-Gi Kim
학과명칭변경 : 재료공학과가 신소재공학과로 변경
학위논문 학위논문(석사) - 한국과학기술원 : 신소재공학과,
서지주기 참고문헌 : p. 62-64
주제 $LiFePO_4$
합성
최적화
$LiFePO_4$
SYNTHESIS
OPTIMIZATION
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