TiSe2 as a potential electrode for potassium-ion batteries, has garnered significant attention owing to its stable ion storage property. Nevertheless, the inadequate electronic conductivity of TiSe2 impedes its practical implementation. In this investigation, we adopt a polymerization method to fabricate TiSe2@PPy, which boasts enhanced conductivity and exceptional performance. Once coated with polypyrrole, the TiSe2@PPy composites demonstrate the optimum electrochemical performance, providing a charge capacity of 67.4 mAh g−1 at 1 C with a capacity retention of 68.4 % after 170 cycles. The PPy coating enhances the conductivity of TiSe2 and enables potassium-ion batteries to exhibit outstanding electrochemical performance. Ex-situ Raman and FTIR tests are utilized to comprehend the electrochemical reaction between K+ and the TiSe2@PPy electrode during cycling. Overall, this work introduces a PPy coating on TiSe2, which presents a novel concept for the development.