Boosting zinc-ion storage capability by engineering hierarchically porous nitrogen-doped carbon nanocage framework

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

“…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)).…”

Nitrogen-doped hollow carbon nanoboxes in zwitterionic polymer hydrogel electrolyte for superior quasi-solid-state zinc-ion hybrid supercapacitors

“…To examine this aspect, the room-temperature conductivity ( σ , mS cm −1 ) of various hydrogel electrolytes was measured via electrochemical impedance spectroscopy (EIS) using the equation σ = L / AR , where L (cm), A (cm 2 ), and R (Ω) refer to the thickness, test area, and resistance of the obtained hydrogel electrolytes, respectively. 10,25 Based on the test results (Fig. 4j and S8a†), P(SBMA- co -AA)/Zn(CF 3 SO 3 ) 2 exhibits an excellent room-temperature ionic conductivity of 27.6 mS cm −1 (Fig.…”

“…16 The hybrid structure may provide more available active sites and good electronic conductivity synchronously, which enables the enhancement of the specic capacity and rate performance of APZC in the aqueous ZHSC. 10,16 It should be emphasized that the hollow structure with crystalline microdomains is probably caused by the Kirkendall effect-induced hollowing and catalytic effect of ZIF-67 under the pyrolysis treatment. 31,32 The selected-area electron diffraction (SAED) pattern (the inset in Fig.…”

“…7 However, the unsatisfactory capacity of carbon cathodes impedes the development of desirable ZHSCs with high performance. 10 In addition, the manifold deep-seated issues associated with the electrolyte are oen encountered in conventional ZHSCs with a liquid electrolyte (aqueous solution containing Zn salt), primarily including uncontrolled Zn corrosion and dendrite growth, undesired side reactions, and electrolyte leakage. 5,11,12 For actualizing the sustainable and versatile application of ZHSCs, these deciencies must be adequately overcome.…”

Freeze‐Tolerant Hydrogel Electrolyte with High Strength for Stable Operation of Flexible Zinc‐Ion Hybrid Supercapacitors

“…[ 1 ] In this regard, the development of renewable energy and corresponding energy storage technologies is of great significance for promoting the prosperity of human beings, reducing environmental pollution, and decreasing the use of fossil fuels. [ 2–4 ] As the post‐Li ion energy storage devices, low‐cost aqueous zinc‐ion hybrid supercapacitors (ZHSCs) can inherit the merits of Zn‐ion batteries and supercapacitors. It exhibits the competitive capacity (originated from high theoretical capacity of Zn anode, 5855 mAh cm −3 or 820 mAh g −1 ), high energy density (related to a wide voltage window of ≈1.6 V), multi‐electron transfer characteristics, eco‐friendliness, and intrinsic non‐flammability, which has aroused immense attention.…”