Jumi Kim, Jimin Oh, Ju Young Kim, Young-Gi Lee, and Kwang Man Kim*김주미·오지민·김주영·이영기·김광만*
Research Division of Reality Devices, Electronics and Telecommunications Research Institute (ETRI),
Gajong-ro 218, Yusong, Daejon 34129, Korea한국전자통신연구원 ICT 창의연구소 실감소자원천연구본부
34129, 대전광역시 유성구 가정로 218
Nonaqueous organic electrolyte solution in commercially available lithium-ion batteries,
due to its flammability, corrosiveness, high volatility, and thermal instability, is demanding
to be substituted by safer solid electrolyte with higher cycle stability, which will be utilized
effectively in large-scale power sources such as electric vehicles and energy storage system.
Of various types of solid electrolytes, composite solid electrolytes with polymer matrix and
active inorganic fillers are now most promising in achieving higher ionic conductivity and
excellent interface contact. In this review, some kinds and brief history of solid electrolyte are
at first introduced and consequent explanations of polymer solid electrolytes and inorganic solid
electrolytes (including active and inactive fillers) are comprehensively carried out. Composite
solid electrolytes including these polymer and inorganic materials are also described with their
electrochemical properties in terms of filler shapes, such as particle (0D), fiber (1D), plane (2D),and solid body (3D). In particular, in all-solid-state lithium batteries using lithium metal anode,
the interface characteristics are discussed in terms of cathode-electrolyte interface, anode-electrolyte
interface, and interparticle interface. Finally, current requisites and future perspectives for
the composite solid electrolytes are suggested by help of some decent reviews recently reported.
Keyword : Lithium Battery, Solid Electrolytes, Composite Solid Electrolyte, Interfaces