C-P/C=O bonds assisted desolvation effect in ultra-micropores carbon for boosting Zn-ion storage capability

Controllable synthesis of electric double-layer capacitance and pseudocapacitance coupled porous carbon cathode material for zinc-ion hybrid capacitors

“…In addition to the physical adsorption of Zn 2+ on the surface of the SA-x caused by electrostatic action, the pseudocapacitance reaction also occurred due to the presence of oxygen-containing functional groups. [66][67][68] Overall, the excellent electrochemical performance based on the SA-x porous carbon electrode for storing Zn 2+ can be summarized in the following points. First, the hierarchical porous carbon network is conducive to effectively shortening the ion transfer paths, resulting in excellent rate capability and lifespan.…”

“…In addition to the physical adsorption of Zn 2+ on the surface of the SA- x caused by electrostatic action, the pseudocapacitance reaction also occurred due to the presence of oxygen-containing functional groups. 66–68…”

All-Round Enhancement in Zn-Ion Storage Enabled by Solvent-Guided Lewis Acid–Base Self-Assembly of Heterodiatomic Carbon Nanotubes

“…It originates from the reversible precipitation–dissolution transition of flaky Zn­(CF 3 SO 3 ) 2 [Zn­(OH) 2 ] 3 · x H 2 O salt (ZHTS) on C FDA/DCE cathode (Figure S12). , Considering the weak acidity of Zn­(CF 3 SO 3 ) 2 /H 2 O electrolyte and the very small size of protons, , a control electrochemical experiment was performed to unravel whether protons participate in the energy storage of C FDA/DCE cathode. Zn//C FDA/DCE device in HCF 3 SO 3 /H 2 O electrolyte (with the same pH of Zn­(CF 3 SO 3 ) 2 /H 2 O electrolyte, pH = 3.26) achieves a low capacity of 32 mA h g –1 (Figure S13), indicating that H + ions take part in the cathodic electrochemistry.…”

Toward record high Zn2+ storage in carbon electrodes via pore confinement engineering

“…2,3 However, the low Zn 2+ storage capability of the cathode and blurred electrolyte confinement mechanism in pores still hinder the practical application of ZHSCs. 4,5 Up to now, many efforts have been dedicated to promoting the high Zn 2+ storage capability of capacitive carbon cathodes via interface engineering (including heteroatom doping 6–8 and surface functional groups engrafting 9–11 ) and pore structure regulation. 12–14 These valuable efforts pave the way for constructing high-performance ZHSCs by regulating the structural properties of the cathode.…”