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Sorbents in CO2RR: When Integration Outpaces Understanding
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DOI：10.1021/acsenergylett.6c00423.png)
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Abstract
En 中文
The integration of CO2 sorbents into electrochemical CO2 reduction (CO2RR) systems is often proposed as a strategy to enhance the local CO2 availability and improve the process efficiency. However, a critical analysis of recent literature reveals that many implementations fall short of their theoretical potential. This Perspective highlights the conceptual and experimental pitfalls in current sorbent-augmented CO2RR research, showing that performance gains are frequently limited by system-level constraints rather than sorbent properties. By benchmarking reported partial current densities against diffusion-limited theoretical maxima, we demonstrate that sorbent integration is rarely the true performance-limiting factor. We argue that future work must prioritize rigorous benchmarking, clearer mechanistic hypotheses, and system-aware design to unlock the full potential of integrated CO2 capture and conversion.
Keywords:
CO2 sorbents
electrochemical CO2 reduction
system-level constraints
performance benchmarking
integrated CO2 capture and conversion