Efficient CO2 utilization and sustainable energy conversion via aqueous Zn-CO2 batteries

CO2 Conversion Toward Real‐World Applications: Electrocatalysis versus CO2 Batteries

“…To achieve rechargeability of this M-CO 2 battery system, a bifunctional catalyst is required for catalyzing the reduction of CO 2 during discharge and OER during charging. 800 cycles (12 days) [191] 0.8 m KHCO 3 ZnTe/ZnO@C FE (HCOOH) = ≈68%, 5 mAcm…”

Tuning the Electrocatalytic Activity of Pd Nanocatalyst toward Hydrogen Evolution and Carbon Dioxide Reduction Reactions by Nickel Incorporation

“…Further, the formation of the liquid product, formate, offers distinct advantages compared to solids and gases as it remains unaffected under a continuous supply of gas flow . In a Zn-CO 2 battery, during discharge, Zn oxidizes to form Zn (OH) 4 2– at the anode while CO 2 undergoes reduction at the cathode. − Herein, we fabricate a Zn-CO 2 battery using NiPd as the catalyst for CO 2 RR at the cathode, as shown in Figure S2. Strikingly, the battery displays a maximum power density of 5 mW cm –2 as compared to Pd, which shows a value of 1.6 mW cm –2 (Figures e and S17b and Table S3).…”

Aqueous Zn–CO2 batteries: a route towards sustainable energy storage

“…In addition to the widely studied N, co-doping with other non-metal elements (e.g., B, P, and S) can differently modify the electronic structure by inducing the polarization of carbon near heteroatoms, thereby enhancing the CO 2 RR activity. 35,70,71 For instance, Kaur et al designed and synthesized a B/N-doped carbon with tubular morphology (C-BN@600) as the catalytic cathode for an aqueous Zn-CO 2 battery. 35 The higher surface area of the nanotubular morphology provided more electrochemically active sites, and the presence of heteroatoms B and N improved the mass and charge transport at the electrode-electrolyte interface and thus faster kinetics.…”

“…35,70,71 For instance, Kaur et al designed and synthesized a B/N-doped carbon with tubular morphology (C-BN@600) as the catalytic cathode for an aqueous Zn-CO 2 battery. 35 The higher surface area of the nanotubular morphology provided more electrochemically active sites, and the presence of heteroatoms B and N improved the mass and charge transport at the electrode-electrolyte interface and thus faster kinetics. As the main adsorption sites, B with insufficient electrons could adsorb the O of CO 2 , while N with a lone pair of electrons binds to C of CO 2 .…”