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Multiscale Defective Interfaces for Realizing Na-CO 2 Batteries With Ultralong Lifespan
Despite their favorable high energy density and potential for CO recycling, Na-CO batteries have been held back by limitations in cycling capability, stemming from the sluggish CO reduction/evolution reaction (CO RR/CO ER) kinetics at CO cathode and unmanageable deposition/stripping of metallic Na a...
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Published in: | Advanced materials (Weinheim) 2024-11, Vol.36 (48), p.e2409533 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Despite their favorable high energy density and potential for CO
recycling, Na-CO
batteries have been held back by limitations in cycling capability, stemming from the sluggish CO
reduction/evolution reaction (CO
RR/CO
ER) kinetics at CO
cathode and unmanageable deposition/stripping of metallic Na at the anode upon cycling. Herein, a "two-in-one" electrode with multiscale defective FeCu interfaces (CP@FeCu) is presented, which is capable of improving the CO
RR/CO
ER kinetics of CO
-breathing cathode, while modulating sodium deposition behavior. Experimental and theoretical investigations reveal multiscale defective FeCu interfaces are responsible for the enhancement of sodiophilicity and catalytic properties. The defect and valence oscillation effects originate in multiscale defective FeCu interfaces, effectively facilitating the adsorption of reactants and decomposition of Na
CO
during CO
RR/CO
ER processes, along with exceptional cycling stability of 2400 cycles (4800 h) at 5 µA cm
. Meanwhile, the CP@FeCu with sodium affinity creates a uniform electric field and robust adsorption for Na, making initial nucleation sites more conducive to Na deposition and achieving dendrite-resistant and durable anodes. This work offers a scientific insight into the functionalization design of "two-in-one" electrodes, which is essential for a unified solution to the challenges in sodium anodes and CO
cathodes. |
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ISSN: | 0935-9648 1521-4095 |
DOI: | 10.1002/adma.202409533 |