Exploration of Metal/Ti3C2 MXene-derived composites as anode for high-performance zinc-ion supercapacitor

Nano‐scale BN interface for ultra‐stable and wide temperature range tolerable Zn anode

“…It's worthy to note that the BN@Zn//AC supercapacitors can achieve a satisfactory energy density of 99.4 Wh kg À1 at the power density of 90 W kg À1 and retained 62.1 Wh kg À1 even at 4.5 kW kg À1 (based on the active material mass in the AC cathode), which also outperforms many other hybrid Zn supercapacitors recently reported (Figure 6F). 34,[43][44][45]…”

Electrospinning synthesis of few‐layer hexagonal antimonene nanosheets as anode for lithium‐ion batteries

“…To unveil the reaction kinetics and charge transfer capacity of H‐SbN electrode, CV curves at various scan rates from 0.2 to 1.2 mV s −1 were described (Figure 4a). In this case, the current response ( i ) is relative to the scan rate ( v ) by a power law equation 26 : . When b = 0.5, this means the diffusion‐controlled process.…”

Redox-active sodium 3,4-dihydroxy anthraquinone-2-sulfonate anchored on reduced graphene oxide for high-performance Zn-ion hybrid capacitors

“…The favorable rate capability is superior to those of many reported Zn ion EDSs listed in Table S4. † 9,20,28,50,51,[70][71][72][73][74] In summary, ZIHCs based on PGAF-ARS show excellent electrochemical performance, which can be attributed to the following points. The abundant porous structure of PGAF-ARS provides a large number of adsorption sites for electrochemically active ARS molecules, and the reversible adsorption of Zn 2+ as a charge carrier at the C]O position provides additional pseudo-capacitance characteristics.…”

“…[4][5][6] Hybrid capacitors that integrate the advantages of supercapacitors and batteries are promising electrochemical energy storage devices (ESDs), in which the capacitive electrode provides a high power capability and the battery electrode supplies a high theoretical capacity. 7,8 Compared with lithium metal, zinc has many advantages, such as low cost, abundant resources, large theoretical specic capacity (823 mA h g À1 vs. Zn/Zn 2+ ), low oxidation-reduction potential (À0.76 V vs. standard hydrogen electrode), and stability in water, [9][10][11][12] which unique advantages lay a solid foundation for the practical applications of Zn-ion hybrid capacitors (ZIHCs). Theoretically, the charge storage kinetics of the capacitor cathode guarantees high power characteristics of the supercapacitor, and the zinc anode provides the battery with high energy density associated with the Zn 2+ deposition/ stripping process.…”