In coping with the rapid emission of massive soot particles during the cold starts of diesel vehicles, achieving rapid catalytic soot combustion at low temperatures is a formidable challenge. Herein, we developed an electricity-pulse-sparked catalysis (EPSC) strategy on a conductive LaCoO perovskite catalyst, creating instantaneous soot combustion. As soon as 800 J of electricity pulse is applied, approximately 80 % of soot is combusted within 1 min at <300 °C, exhibiting the higher reaction rates (180−1300 µmol g s) and energy efficiencies (18−100 g kWh) than previously reported results for catalytic soot combustion. Moreover, the EPSC eliminates the gap of contact between soot and catalyst that is a longstanding bottleneck for the specific solid (soot)-solid (catalyst)-gas (O) reaction, which can be synchronized with the frequently engine start/stop operations, demonstrating potential to address the challenges of soot emissions for hybrid powers.

中文翻译：

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导电 LaCoO3 催化剂上柴油机烟灰的电脉冲火花快速燃烧

为了应对柴油车冷启动时大量碳烟颗粒的快速排放，实现低温下快速催化碳烟燃烧是一项艰巨的挑战。在此，我们在导电 LaCoO 钙钛矿催化剂上开发了一种电脉冲火花催化 (EPSC) 策略，产生瞬时烟灰燃烧。一旦施加 800 J 的电脉冲，大约 80% 的烟灰在 <300 °C 的温度下在 1 分钟内燃烧，表现出比先前报道的催化烟灰燃烧的结果。此外，EPSC消除了烟灰和催化剂之间的接触间隙，这是特定的固体（烟灰）-固体（催化剂）-气体（O）反应的长期瓶颈，可以与频繁的发动机启动/停止操作同步，展示了解决混合动力烟尘排放挑战的潜力。