Self-templated formation of CuCo2O4 triple-shelled hollow microspheres for all-solid-state asymmetric supercapacitors

Bundlelike CuCo2O4 Microstructures Assembled with Ultrathin Nanosheets As Battery-Type Electrode Materials for High-Performance Hybrid Supercapacitors

“…47 The BET surface area of 114.36 m 2 g −1 is much larger than some of the previously reported values for CuCo 2 O 4 micro/nano-structures. 41,48,49 Such superhigh surface area is beneficial to the adequate contact between CuCo 2 O 4 BMs and electrolyte. The pore size distribution was centered at 1.88 nm and the mean pore diameter was evaluated as 10.99 nm (Figure 5b), which further proved a mesoporous structure of BMs.…”

Co-precipitation synthesis of CuCo2O4 nanoparticles for supercapacitor electrodes with large specific capacity and high rate capability

“…These further prove that there are the surface capacitive-type behavior and the battery-type diffusion-control behavior in the charging/discharging processes. Therefore, although CuCo2O4 is reported as a typical battery-type material in literature [30][31][32]48], the CuCo2O4-250 nanoparticles in this study show a mixed behavior due to their ultra-fine sizes, large specific surface area and large pore volumes. Fig.…”

“…For example, the CuCo2O4 nanoneedle arrays [30] showed a specific capacitance of 390 F g −1 at a current density of 0.5 A g −1 with a rate capability of 38.5 % for 10 A g −1 . Triple-shelled and hollow CuCo2O4 microspheres [31] exhibited a specific capacitance of 691 F g −1 at 1 A g −1 and retained 470 F g −1 at 20 A g −1 , with a rate capability of 68 %. Hierarchical CuCo2O4 nanoflowers [32] showed a capacity of 202.8 C g −1 at 1 A g −1 , which could retain about 48 % at 10 A g −1 .…”

Advances in pseudocapacitive and battery-like electrode materials for high performance supercapacitors

“…10c and d). In another study, Li et al 366 described the self-templated fabrication of CuCo 2 O 4 triple-shelled hollow microspheres which displayed a C sp of 691 F g −1 at 1 A g −1 and a CR of 93% after 6000 cycles. The corresponding asymmetric SC device exhibited the ED of 25.2 W h kg −1 and a CR of 94% after 2000 cycles.…”