Facile synthesis of MnOn-CNF composites by construction and evolution of Mn-ZnBTC fibers.
Excellent accessibility, high porosity, tight contact and superior conductivity are integrated.
Remarkable capacitance of up to 18290 F g−1 per active mass of the manganese(IV) oxide.
Superior stability of cycling up to 5000 times with a high capacitance retention ratio of 98%.