4. Conclusion
Herein, the ZMOP cathode material was fabricated by a straightforward hydrothermal method. Meanwhile, the ZISCs are successfully assembled with as-prepared materials. Comparing all the results, the ZMOP-4 cathode material exhibited the best electrochemical performance (0.1 A g-1, 156.4 mAh g-1). Meanwhile, with the sweep speed of 5.0 mV s-1, the contribution of pseudocapacitance can exhibit 71.8%. After 5000 cycles, the capacity retention is 82.6% at 0.2 A g-1. Therefore, the doping of the zinc source improved the structural stability of MnO2. And the addition of PPy changed the structural characteristics of ZMO, greatly improving the electronic conductivity and active site. The ZISCs assembled with ZMOP-4 cathode and PCNTs anode display superb capacity (109 F g-1, 0.1 A g-1 ), and excellent power density of 867 W kg-1 corresponding to the energy density of 20 Wh kg-1. Even after 5000 cycles, the ZISCs achieve long-cycle stability (86.4 % capacity retention, 0.2 A g−1, 5000 cycles). This article offers a new perspective on the utilization of Mn-based materials and conductive polymers in ZISCs.