Integrated energy storage and CO2 conversion using an aqueous battery with tamed asymmetric reactions
Copyright policy )Integrated energy storage and CO2 conversion using an aqueous battery with tamed asymmetric reactions
AbstractDeveloping a CO2-utilization and energy-storage integrated system possesses great advantages for carbon- and energy-intensive industries. Efforts have been made to developing the Zn-CO2 batteries, but access to long cycling life and low charging voltage remains a grand challenge. Here we unambiguously show such inefficiencies originate from the high-barrier oxygen evolution reaction on charge, and by recharging the battery via oxidation of reducing molecules, Faradaic efficiency-enhanced CO2 reduction and low-overpotential battery regeneration can be simultaneously achieved. Showcased by using hydrazine oxidation, our battery demonstrates a long life over 1000 hours with a charging voltage as low as 1.2 V. The low charging voltage and formation of gaseous product upon hydrazine oxidation are the key to stabilize the catalyst over cycling. Our findings suggest that by fundamentally taming the asymmetric reactions, aqueous batteries are viable tools to achieve integrated energy storage and CO2 conversion that is economical, highly energy efficient, and scalable.
- UNIVERSITY COLLEGE LONDON United Kingdom
- Peking University China (People's Republic of)
- University College of London United Kingdom
- Peking University China (People's Republic of)
- Peking University China (People's Republic of)
Energy storage, Overpotential, Electrochemical Reduction of CO2 to Fuels, Redox Flow Batteries, Science, Electrode, Organic chemistry, Quantum mechanics, Article, Engineering, FOS: Electrical engineering, electronic engineering, information engineering, Electrochemistry, Aqueous Zinc-Ion Batteries, Aqueous solution, Nanotechnology, Electrical and Electronic Engineering, Battery (electricity), Rechargeable Batteries, Aqueous Zinc-Ion Battery Technology, FOS: Nanotechnology, Energy, Renewable Energy, Sustainability and the Environment, Physics, Q, CO2 Reduction, Voltage, Power (physics), Computer science, Materials science, Chemistry, Physical chemistry, Faraday efficiency, Electrical engineering, Physical Sciences, Heterogeneous Electrocatalysts, Electrocatalysis for Energy Conversion, Oxygen evolution
Energy storage, Overpotential, Electrochemical Reduction of CO2 to Fuels, Redox Flow Batteries, Science, Electrode, Organic chemistry, Quantum mechanics, Article, Engineering, FOS: Electrical engineering, electronic engineering, information engineering, Electrochemistry, Aqueous Zinc-Ion Batteries, Aqueous solution, Nanotechnology, Electrical and Electronic Engineering, Battery (electricity), Rechargeable Batteries, Aqueous Zinc-Ion Battery Technology, FOS: Nanotechnology, Energy, Renewable Energy, Sustainability and the Environment, Physics, Q, CO2 Reduction, Voltage, Power (physics), Computer science, Materials science, Chemistry, Physical chemistry, Faraday efficiency, Electrical engineering, Physical Sciences, Heterogeneous Electrocatalysts, Electrocatalysis for Energy Conversion, Oxygen evolution
