Sn-Based Electrocatalyst Stability: A Crucial Piece to the Puzzle for the Electrochemical CO2 Reduction toward Formic Acid,ACS Energy Letters

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Sn-Based Electrocatalyst Stability: A Crucial Piece to the Puzzle for the Electrochemical CO2 Reduction toward Formic Acid
ACS Energy Letters ( IF 19.3 ) Pub Date : 2021-11-11 , DOI: 10.1021/acsenergylett.1c02049
Kevin Van Daele _{1,

2} , Bert De Mot ₁ , Marilia Pupo ₃ , Nick Daems _{1,

2} , Deepak Pant _{2,

4} , Ruud Kortlever ₃ , Tom Breugelmans _{1,

2,

4}

Affiliation

Nowadays, Sn-based electrocatalysts for the electrochemical CO₂ reduction reaction (eCO₂RR) toward formic acid have been reported to reach industrially relevant current densities and Faradaic efficiencies approaching 100%. However, electrocatalyst stability remains inadequate and appears to be a crucial piece to the puzzle, as lifetimes in the range of several thousands of hours should be reached for practical application and economic viability. Here, we provide insights into stability issues related to Sn-based electrocatalysts and electrolyzers for formic acid production. By determining the chemical and physical phenomena that occur during the electrochemical reduction reaction on the surface and bulk of Sn-based catalysts, we intend to elucidate the most common degradation mechanisms that impair long-term electrocatalytic activity of these catalysts. Moreover, highlighting the importance of correctly selected process conditions and an optimized reactor design allows us to unveil all necessary aspects for a stable Sn-based eCO₂RR toward formic acid.

中文翻译：

锡基电催化剂稳定性：解决电化学 CO2 还原为甲酸的难题的关键部分

目前，用于电化学 CO ₂还原反应 (eCO ₂据报道，RR) 对甲酸可达到工业相关的电流密度和接近 100% 的法拉第效率。然而，电催化剂的稳定性仍然不足，似乎是解决难题的关键部分，因为实际应用和经济可行性应该达到数千小时的寿命。在这里，我们提供了与 Sn 基电催化剂和用于甲酸生产的电解槽相关的稳定性问题的见解。通过确定 Sn 基催化剂表面和本体电化学还原反应过程中发生的化学和物理现象，我们打算阐明损害这些催化剂长期电催化活性的最常见降解机制。而且，₂ RR 对甲酸。

更新日期：2021-12-10

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