Aqueous Zn–CO<sub>2</sub> batteries: a route towards sustainable energy storage

Liu, Yanxiu; Chen, Junjie; Li, Weichen; Zhang, Yu; Fu, Xianwei; Li, Erling; Jin, Shangbin; Yang, Li-Ming; Tian, Zhihong; Antonietti, Markus; Liu, Tianxi

doi:10.1039/d4im00014e

Cited by 2 publications

(1 citation statement)

References 143 publications

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“…Concurrently, Zn dissolves in the electrolyte solution (reaction equation provided in the Supporting Information). Throughout the discharge process, the cathode supports the oxygen evolution reaction, which in turn promotes the reduction of Zn 2+ ions at the anode. − The zero-crossover barrier constructed with Cu–Sn–O x /rGO demonstrated an open circuit potential of 0.711 V (Figure b), closely aligning with the theoretical electric force of +0.707 V, which might be attributed to the suppression of HER by CO 2 evolution reaction. , The charge and discharge polarization curves of the SnO 2 /rGO and Cu–Sn–O x /rGO cells are presented in Figure c. The Cu–Sn–O x /rGO cell displays the maximum current density, exceeding 4 mA/cm 2 .…”

Section: Results and Discussionmentioning

confidence: 96%

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries

Wang,

Mei,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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The electrochemical CO 2 reduction reaction (CO 2 RR) into high-value carbon compounds such as CO and HCOOH is a promising strategy for the utilization and conversion of emitted CO 2 . However, the selectivity of the CO 2 RR for HCOOH is typically less than 90% and operates within a narrow voltage range, which limits its practical application. Herein, we propose a novel heterostructural aerogel as a highly efficient electrocatalyst for CO 2 RR to HCOOH. This catalyst consists of Cu−Sn−O x solid solutions embedded in a reduced graphene oxide matrix (Cu−Sn− O x /rGO). The incorporation of Cu 2+ into the SnO 2 matrix enhances HCOOH production by improving the adsorption of the *OCHO intermediate and inhibiting H 2 evolution, as confirmed by in situ measurements and computational studies. As a result, Cu−Sn−O x /rGO achieves a remarkable Faradaic efficiency (FE) of up to 91.4% for HCOOH and maintains high selectivity over a broad operating voltage range (−0.8 to −1.1 V). Additionally, the assembled Zn−CO 2 batteries demonstrated an excellent power density of 1.14 mW/cm 2 and exceptional stability for over 25 h.

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Section: Results and Discussionmentioning

confidence: 96%

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries

Wang,

Mei,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

Chen,

Shen,

Liu

et al. 2024

ChemSusChem

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Spent all‐solid‐state sodium‐ion batteries (ASIBs) containing toxic and precious metal would be produced significantly and lead to resource waste and environmental pollution as the wide application of ASIBs in the near future. Therefore, it is necessary to develop green strategy for recovery of ASIBs. Here, we propose a safe, mild and green strategy to recover toxic and precious metals from cathode/solid electrolyte of ASIBs by using natural low‐melting mixture solvents (LoMMSs) with high selectivity and high leaching efficiency. Natural LoMMSs are abundant, natural available, cheap, non‐flammable, biodegradable and biocompatible. Results show that natural LoMMSs could leach nearly 100% Na and achieve superhigh Na/Zr selectivity of up to 58 from ASIBs at mild temperature, outperforming the recycling efficiency and selectivity of lithium‐ion batteries cathode. More importantly, we find that water could be used as a green and low‐cost anti‐solvent to precipitate the extracted metal from the leachate with low‐energy consumption at room temperature. This work provides a cost‐effective, energy‐saving, mild, green strategy for the recovery of cathode/solid electrolyte from spent ASIBs with high safety and high selectivity.

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

Abstract: In recent years, the concept of a rechargeable aqueous Zn-CO2 battery has attracted extensive attention, including a dual functionality of supplying power and simultaneously converting CO2 into value-added chemicals or...

Cited by 2 publications

References 143 publications

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries

Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

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

Abstract: In recent years, the concept of a rechargeable aqueous Zn-CO2 battery has attracted extensive attention, including a dual functionality of supplying power and simultaneously converting CO2 into value-added chemicals or...

Cited by 2 publications

References 143 publications

Hierachical Aerogel-Supported Cu–Sn–Ox Solid Solutions for Highly Selective CO2 Electroreduction and Zn–CO2 Batteries

Hierachical Aerogel-Supported Cu–Sn–Ox Solid Solutions for Highly Selective CO2 Electroreduction and Zn–CO2 Batteries

Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

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Product

Resources

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

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries

Hierachical Aerogel-Supported Cu–Sn–O_x Solid Solutions for Highly Selective CO₂ Electroreduction and Zn–CO₂ Batteries