Architecture design and optimization are regarded as essential approaches for improving the catalytic performance toward oxygen evolution reaction. Inspired by the natural porosity and directional micro-channels of wood, a universal strategy that N-doped carbon nanotube encapsulated active nanoparticles rooted into carbonized wood framework is proposed. The as-prepared catalysts show ultrahigh activity and robust stability. Representatively, the FeNi-P encapsulated in N-doped carbon nanotubes grown on the carbonized wood frameworks (denoted as FeNi–P@NCNT/CW) exhibit an outstanding OER activity with an overpotential of 180 mV to reach 50 mA cm⁻². As comparison, such catalysts integrated in nickel foam and carbon paper require higher overpotentials with 251 and 249 mV, respectively. Furthermore, a steady OER overpotential is maintained even tested for more than 200 h (4.2 % decay). The referred construction will open a new road to adopting renewable resources for preparing efficient electrocatalysts and other electrochemical energy-conversion devices.

体系结构设计和优化被认为是改善对氧气释放反应的催化性能的基本方法。受到木材自然孔隙率和方向性微通道的启发，提出了一种通用策略，即将掺氮碳纳米管包裹的活性纳米颗粒扎根到碳化木框架中。所制备的催化剂显示出超高的活性和坚固的稳定性。代表性的是，FeNi-P封装在碳化木框架上生长的N掺杂碳纳米管中（表示为FeNi–P @ NCNT / CW），具有出色的OER活性，其超电势为180 mV，达到50 mA cm ^-2。相比之下，集成在泡沫镍和碳纸中的此类催化剂分别需要更高的过电位，分别为251和249 mV。此外，即使经过200多个小时（4.2％衰减）的测试，仍可以保持稳定的OER过电势。涉及的建设将为采用可再生资源制备高效电催化剂和其他电化学能量转换装置开辟一条新道路。