인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract Condensed matters with high ionic conductivities are crucial in various solid devices such as solid-state batteries. The conduction is characterized by the cooperative ionic motion associated with the high carrier density. However, the high cost of computing correlated ionic conductivities has forced almost all ab initio molecular dynamics (MD) to rely on the Nernst–Einstein dilute-solution approximation, which ignores the cross-correlation effect. Here we develop a chemical color-diffusion nonequilibrium MD (CCD-NEMD) method, which enables to calculate the correlated conductivities with fewer sampling steps than the conventional MD. This CCD-NEMD is demonstrated to well evaluate the conductivities in the representative solid electrolyte bulk Li 10 GeP 2 S 12 and Li 7 La 3 Zr 2 O 12 . We also applied CCD-NEMD to the grain boundary of Li 7 La 3 Zr 2 O 12 and demonstrated its applicability for calculating interfacial local conductivities, which is essential for investigating grain boundaries and composite electrolytes. CCD-NEMD can provide further accurate understanding of ionics with ionic correlations and promote developing solid devices.
#Ionic conductivity
#Nernst equation
#Electrolyte
#Fast ion conductor
#Ionic bonding
#Ion
#Conductivity
#Grain boundary
#Molecular dynamics
#Chemical physics
#Diffusion
#Thermal conduction
#Materials science
#Chemistry
#Thermodynamics
#Statistical physics
#Physics
#Physical chemistry
#Computational chemistry
#Quantum mechanics
#Crystallography
#Electrode
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