鋰離子二次 電解液 隔離膜 集電材 正、負極活性物質 18650電池 093448電池 過渡金屬氧化物 Lithium ion cell Electrolyte Separator Current collectors Positive electrode active material Negative electrode active material 18650 093448 Transition metal oxides Li[9058]CoO[feaf] Li[9058]NiO[feaf] LiNi[9058]Co[fec5] O[feaf] Li□Mn[feaf]O[feb2]