Boosting Zn-ion adsorption in cross-linked N/P co-incorporated porous carbon nanosheets for the zinc-ion hybrid capacitor

Abstract

Zinc-ion hybrid capacitors (ZHC) combining many advantages of supercapacitors and batteries, are promising new type of energy storage devices. However, the bottleneck of low energy density and inferior cyclic stability...

Flexible in-plane zinc-ion hybrid capacitors with synergistic electrochemical behaviors for self-powered energy systems

“…33 Zhang and co-workers incorporated N and P heteroatoms to boost zinc-ion adsorption of cross-linked porous carbon NSs, and obtained high ZIHC electrochemical performance. 34 These studies also reveal the importance of electrode design for achieving desirable electrochemical performance. To further meet the flexibility requirement and achieve energy matching with energy harvesting devices, key challenges such as compatible device capacitance and operating voltage remain for ZIHCs, which play an essential role and are a research spot for future self-powered energy systems to power various electronics.…”

Synergistic effects of B/S co-doped spongy-like hierarchically porous carbon for a high performance zinc-ion hybrid capacitor

“…Moreover, the highest specific capacity (182.6 mA h g −1 ) was achieved of B 2 S 3 C at 0.1 A g −1 due to the synergistic effect of B and S co-doping, superior to those of some advanced devices. 33,34,39,42,46,47 The EIS spectra in Fig. 5(c) shows that the minimum R s value of B 2 S 3 C was 0.867 Ω and the R ct value of B 2 S 3 C was smaller compared to those of B 0 S 0 C, B 2 S 0 C and B 0 S 3 C, which suggested that a rapid electrochemical reaction occurred at the interface of the electrode/electrolyte.…”

“…3(e) were 90°, 78°, 85°, and 65°, indicating that B 2 S 0 C and B 2 S 3 C showed an enhanced wettability of the electrolyte at the interface in contrast to B 0 S 0 C and B 0 S 3 C. This can be assigned to the formed functional groups containing oxygen (BC x O x ) due to the doping of B into B 0 S 0 C, and further resulted in the Zn 2+ and SO 4 2− in the electrolyte were easily contact the electrode surface. 39…”

“…S5†). 34,38,39,42,46,48–50 To further investigate the synergistic effects of B and S co-doping of B 2 S 3 C for the ZIHC, the long cycling stability of all the samples was tested at 5 A g −1 for 10 000 cycles (Fig. 5(f)).…”

Sulfur incorporation modulated absorption kinetics and electron transfer behavior for nitrogen rich porous carbon nanotubes endow superior aqueous zinc ion storage capability

“…The gradual deviation of CV and GCD curves represents an indication of the probable coexistence of pseudocapacitance. 37 It is noteworthy that compared with the N-PCNT cathode (Fig. 3c), the SN-PCNT based ZHC possesses a superior rate capability with specic capacities of 152.6, 120.3, 106.7, 95.0, 80.6, 69.5, 62.5, 55.6 and 44.5 mA h g À1 This journal is © The Royal Society of Chemistry 2022 at current densities of 0.2, 0.5, 1, 2, 5, 10, 15, 25 and 40 A g À1 , respectively.…”