For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO₂ tunnel structure, the as-prepared K_1.04Mn₈O₁₆ materials consist of nanoparticles and nanorods were prepared by facile high-temperature solid-state reaction. The as-prepared materials were well studied and they show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K_1.04Mn₈O₁₆ as cathode. It shows high energy and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg⁻¹ at the power density of 99.86 W kg⁻¹ and Na-ion capacitor obtains 170.96 Wh kg⁻¹ at 133.79 W kg⁻¹. In addition, the hybrid supercapacitors demonstrate excellent cycling performance which maintain 97% capacitance retention for Li-ion capacitor and 85% for Na-ion capacitor after 10,000 cycles.

对于含水锂离子混合电容器和钠离子混合电容器的应用，将钾离子预先插入到MnO ₂隧道结构中，所制备的K _1.04 Mn ₈ O ₁₆材料由纳米颗粒组成，并通过快速制备得到纳米棒。固相反应。对所制备的材料进行了充分的研究，它们显示出出色的电化学性能。我们组装了以商业活性炭（YEC-8A）为阳极，K _1.04 Mn ₈ O ₁₆为阴极的混合超级电容器。它显示出高能量和功率密度。锂离子电容器在99.86 W kg的功率密度下可达到127.61 Wh kg ^-1的高能量密度^-1和Na离子电容器取得170.96瓦千克^-1在133.79W¯¯千克^-1。此外，混合超级电容器具有出色的循环性能，在10,000次循环后，锂离子电容器的电容保持率保持在97％，钠离子电容器的保持率保持在85％。