Thermodynamics and kinetics of lithium intercalation into and deintercalation from lithium manganese oxide = 리튬 망간 산화물내로의 리튬 인터칼레이션과 디인터칼레이션의 열역학 및 속도론

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 341
  • Download : 0
The present work involves the thermodynamics and kinetics of lithium intercalation into and deintercalation from the $LiMn_2O_4$ composite and film electrodes. In chapter III, the lithium intercalation into the $Li_{1-δ}Mn_2O_4$ electrode prepared by sol-gel method was investigated from the thermodynamic view point by using galvanostatic intermittent titration technique (GITT) combined with EMF-temperature measurement. The electrode potential vs. lithium content curve was theoretically calculated with the aid of the lattice gas model based upon the Bragg-Williams approximation for the cubic spinel composed of two sub-lattices. From the numerical calculation using the lattice gas model with the Bragg-Williams approximation, it was found that both lithium contents in two sub-lattices deviate strongly from that lithium content in total lattice due to the ordering of the intercalated lithium ions in the $Li_{1-δ}Mn_2O_4$ electrode. Considering the considerable difference between both lithium contents in two sub-lattices due to the ordering of the intercalated lithium ions, the theoretical partial molar enthalpy and entropy of lithium ion were calculated at various lithium contents by a numerical method. The theoretical partial molar intercalation enthalpy and entropy of the lithium ion calculated by a numerical method are in good agreement with experimental results obtained from the temperature dependence of the electrode potential at various lithium contents. In chapter IV, the thermodynamics and kinetics of the lithium intercalation into $Li_{1-δ}Mn_2O_4$ electrode have been theoretically investigated underlain by the statistical thermodynamics concept using the Monte Carlo simulation based upon the lattice gas model. From the fluctuations in the internal energy and the number of lithium ions in the grand canonical ensemble (GCE), the partial molar internal energy and entropy of lithium ion were theoretically obtained at a fixed chemical potential. Both theoretic...
Advisors
Pyun, Su-Il변수일
Description
한국과학기술원 : 재료공학과,
Publisher
한국과학기술원
Issue Date
2002
Identifier
174591/325007 / 000985069
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 재료공학과, 2002.2, [ xv, 183 p. ]

Keywords

Monte Carlo method; lithium intercalation; lithium secondary battery; lithium manganese oxide; lithium transport; 리튬 이동; 몬테 카를로 방법; 리튬 인터칼레이션; 리튬 이차전지; 리튬 망간 산화물

URI
http://hdl.handle.net/10203/50251
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=174591&flag=dissertation
Appears in Collection
MS-Theses_Ph.D.(박사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0