There are tremendous requirements in CO electrolysis to produce value-added chemicals, where the functional carbon-based catalysts possess the unique superiorities for CO conversion. Pyrolysis kinetics as a theoretical guidance is pivotal to construct the high-activity carbon-based catalysts precisely, which is decoupled urgently. Herein, the pyrolysis behaviors of ipomea batatas leaves were well optimized by Ni/N modulators and unveiled systematically, where the residence time of biomass was prolonged during the pyrolysis process and the emerged out-of-plane orientation sp C–N species were increased. Additionally, the presented first-order kinetics revealed that with Ni/N modulators, the higher apparent energy barrier was determined than single biomass, corresponding to an enhanced thermostability. As a guidance, the derivative catalyst with high N content (17.22 at%) can drive electrochemical CO-to-CO reaction efficiently. The current density was up to 200 mA cm and the CO Faradaic efficiency kept over 95 % at a wide work window (–0.66 to –1.46 V versus reversible hydrogen electrode) in flow cell.

中文翻译：

---

Ni/N 调节生物质热解制备用于电化学 CO2 至 CO 转化的碳基催化剂

CO电解生产高附加值化学品有着巨大的需求，其中功能性碳基催化剂在CO转化方面具有独特的优势。热解动力学作为理论指导是精确构建高活性碳基催化剂的关键，亟待解耦。在此，通过Ni/N调节剂很好地优化了红薯叶的热解行为，并系统地揭示了热解过程中生物质的停留时间延长和出现的面外取向sp C-N物种增加。此外，所提出的一级动力学表明，使用 Ni/N 调节剂，比单一生物质具有更高的表观能垒，这对应于增强的热稳定性。作为指导，高氮含量 (17.22 at%) 的衍生催化剂可以有效驱动电化学 CO 转化为 CO 反应。流通池中的电流密度高达 200 mA cm，CO 法拉第效率在宽工作窗口（相对于可逆氢电极为 –0.66 至 –1.46 V）下保持在 95% 以上。