BHPC (biomass hierarchical porous carbon) is a new microwave absorption material with extraordinarily low density, excellent dielectric loss, and a low environmental impact. In this paper, a Ni/BHPC composite is introduced, which were fabricated using a simple electroless plating method. When the NiSO₄ concentration is changed, the electromagnetic characteristics and absorption performance are optimized. The Ni/BHPC composite material exhibits excellent absorption characteristics at a NiSO₄ concentration of 0.2 mol/L. With a thickness of 2.7 mm, the RL_min is −58.504 dB at 10.741 GHz. In the frequency range 8.221–12.4 GHz, with a thickness of 2.9 mm, this reflection loss (RL) is less than −10 dB. These results indicate that incorporating Ni particles into the BHPC enhances its wave absorption efficiency. The research contributes to develop high-performance porous carbon microwave absorption materials from biomass.

BHPC（生物质分级多孔碳）是一种新型微波吸收材料，具有极低的密度、优异的介电损耗和低环境影响。在本文中，介绍了一种 Ni/BHPC 复合材料，该复合材料是使用简单的化学镀方法制造的。当NiSO ₄浓度改变时，电磁特性和吸收性能得到优化。Ni/BHPC复合材料在NiSO ₄浓度为0.2 mol/L时表现出优异的吸收特性。厚度为 2.7 mm 时，RL _min在 10.741 GHz 时为 -58.504 dB。在 8.221-12.4 GHz 频率范围内，厚度为 2.9 mm，此反射损耗 ( RL) 小于 -10 dB。这些结果表明，将 Ni 颗粒掺入 BHPC 可提高其吸波效率。该研究有助于从生物质中开发高性能多孔碳微波吸收材料。