Enhanced energy density and wide potential window for K incorporated MnO2@carbon cloth supercapacitor

Efficient coupling of MnO2/TiN on carbon cloth positive electrode and Fe2O3/TiN on carbon cloth negative electrode for flexible ultra-fast hybrid supercapacitors

“…8(f) . The specific capacitance of the device is 102.8 F g −1 at a current density of 5 A g −1 , which is better than those of MnO 2 -based devices reported in the literature, for instance, K–MnO 2 //AC (83 F g −1 at 3 A g −1 ), 32 M–MnO 2 /rGO//AC (90.7 F g −1 at 0.25 A g −1 ), 33 MnO 2 @CNTs//MnO 2 @CNTs (highest specific capacitance of 56 F g −1 ) 34 and GF@MNT@MNF//AC (51.50 F g −1 at 0.13 A g −1 ). 29 More information can be found from Table 1 .…”

“…As aforementioned above, this is one of the best values observed from similar devices regardless of the positive or negative configurations. For instance, it is better than those of K–MnO 2 //AC (56 W h kg −1 at 550 W kg −1 ), 32 M–MnO 2 /rGO//AC (36.4 W h kg −1 at 212.5 W kg −1 ), 33 rMnCo 2 O 4 @rMnO 2 -2 h//AC (32.4 W h kg −1 at 904.9 W kg −1 ), 36 MnO 2 @CNTs//MnO 2 @CNTs (31.2 W h kg −1 at 16 000 W kg −1 ), 34 and GF@MNT@MNF//AC (23.2 W h kg −1 at 119.9 W kg −1 ). 36 The excellent electrochemical characteristics of the MnO 2 /TiN/CC electrode and assembled supercapacitor device can be attributed to the shore-shell structure comprising the MnO 2 nanosheets and TiN nanowires that spread evenly on the conductive carbon cloth.…”

Nano Carbon/Vertical Graphene/MnO2 Nanosheets Composite Particles for High‐Performance Supercapacitors

“…The energy density is calculated as 54 Wh kg À1 at the power density of 181 W kg À1 , which outperforms the recently reported MnO 2 -based symmetric supercapacitors [62][63][64][65][66][67][68][69] and is even higher than the advanced asymmetric supercapacitors in literature. [70][71][72][73][74] Even at a high power density of 2.08 kW kg À1 , the device can still achieve an energy density of 8.829 Wh kg À1 . Two symmetric supercapacitors connected in parallel can drive a blue LED light successfully, indicating the practicability of the supercapacitors (Figure 7f ).…”

Surface plasmon resonance improved photocatalytic activity of Au/TiO2 nanocomposite under visible light for degradation of pollutants

“…[11][12][13][14] Dissolved 2,4-DCP can be quickly absorbed over skin into the body and it is tremendously fatal because it may cause endocrine disruption, liver damage, and the degradation of several other organs. [14][15][16][17][18][19] Therefore, 2,4-DCP has been designated as the top primacy control pollutants, since the endocrine disruption, mutagenic, and carcinogenic effects has been observed when a human was exposed to 2,4-DC. Therefore, it is of prodigious worth to progress effective technology based on solar energy to solve the problem of water pollution.…”