▎ 摘　　要

NOVELTY - Battery (100), comprises a cathode (102) and anode (104), which are provided on opposite sides of a separator (106), are soaked with an electrolyte (108) and an electrolyte-permeable microporous interlayer (110) provided between the separator and the cathode. The interlayer is glass microfiber paper coated with carbonized synthetic carbon material. USE - Battery for preparing interlayer from coal tar pitch (claimed). ADVANTAGE - The battery with the carbonized coal tar pitch-glass micro fiber CCTP-GF paper as an interlayer shows capacity of around 900-1600 mAh g-1 with high columbic efficiency above 95% and excelled rate capability for a stable long cycle life more than 250 cycles, which is cost-effective and has better electrolyte retaining property to provide better electrochemical performance of LSBs. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing an interlayer from coal tar pitch, which involves: tirring coal tar pitch with a NMP (N-Methyl-2-pyrrolidone) solution for a first predetermined time at a first predetermined temperature to obtain an intermediate solution; pouring the intermediate solution onto a glass micro fiber paper drying the intermediate solution and the glass micro fiber paper for a second predetermined time at a second predetermined temperature; calcining the dried intermediate solution and the glass micro fiber paper for a third predetermined time at a third predetermined temperature to obtain carbonized coal tar pitch-glass micro fiber paper CCTP-GF, which is used as the interlayer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic configuration of a battery having an interlayer. 100Battery 102Cathode 104Anode 106Separator 108Electrolyte 110Electrolyte-permeable microporous interlayer