Defect engineering via the F-doping of β-MnO₂ cathode to design hierarchical spheres of interlaced nanosheets for superior high-rate aqueous zinc ion batteries

Abstract

The rechargeable aqueous Zn ion battery (ZIB) is a promising candidate for next-generation energy storage technology due to its low cost, low flammability, inherent safety, and high theoretical capacity. Nevertheless,...

Electrochemical reaction behavior of MnS in aqueous zinc ion battery

“…4), which will be accompanied by structural changes and dissolution of Mn, thus causing a large loss of capacity in the initial stage. [41][42][43][44] Second, the battery reaction is actually the intercalation/deintercalation of H + and Zn 2+ in MnO x , but no longer that of MnS in subsequent cycles. The fast decay in the initial cycles is a common phenomenon of MnO x cathode according to previous reports.…”

Stable anode enabled by an embossed and punched structure for a high‐rate performance Zn‐ion hybrid capacitor

“…The electrochemical kinetics of the various electrodes is proved by the EIS and CV results (Figure 5). Here, the EIS Nyquist plots (Figure 5A) of all three electrodes exhibit a semicircle in the high‐frequency region and a straight sloping line in the low‐frequency region, which express the charge‐transfer resistance and Warburg impedance, respectively 21‐23 . The charge‐transfer resistances of the EZN and EPZN electrodes are seen to be similar to that of the bare Zn, thus indicating that the surface engineering does not alter the electrical properties.…”

Stability Optimization Strategies of Cathode Materials for Aqueous Zinc Ion Batteries: A Mini Review

“…As reported earlier, the vacancy defects caused by doping modification have been confirmed stabilizing the crystal structure of cathode materials. Besides, the substitution doping of multivalent metal ions can effectively reduce the formation energy of cathode materials, which can effectively inhibit the collapse of crystal structure ( Kim et al, 2021 ; Li et al, 2020 ). Ni et al synthesized Mn-substituted zinc hexacyanoferrate materials (MZHCFs) using a simple precipitation method ( Ni et al, 2021 ).…”