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.