The rapid developments in communication technology and aerospace have prompted the renewal of electromagnetic wave (EMW) materials. Here, we have prepared graphene-like porous grapefruit peel/Ni_0.5Co_0.5Fe₂O₄ composite by in-situ generation. The graphene-like porous structure improves conductive loss and multi-polarization availably. Meanwhile, the addition of Ni_0.5Co_0.5Fe₂O₄ facilitates to introduce the magnetic loss. Moreover, the large number of pores promotes multiple reflections and scattering of EMW, thus improving EMW absorption performance. Through adjusting the carbonization temperature, the sample with extremely thin thicknesses (1.7 mm) achieves wide effective absorption bandwidth (5.14 GHz). It offers a path to the practical application of new absorbing materials with wider absorption bands and thin thickness.

通信技术和航空航天的快速发展促进了电磁波（EMW）材料的更新换代。在这里，我们通过原位生成制备了类石墨烯多孔柚子皮/Ni _0.5 Co _0.5 Fe ₂ O _{4复合材料。}类石墨烯多孔结构有效地改善了导电损耗和多极化。同时，加入Ni _0.5 Co _0.5 Fe ₂ O ₄有助于引入磁损耗。此外，大量的孔隙促进了电磁波的多次反射和散射，从而提高了电磁波吸收性能。 通过调整碳化温度，厚度极薄（1.7 mm）的样品实现了较宽的有效吸收带宽（5.14  GHz）。它为具有更宽吸收带和更薄厚度的新型吸收材料的实际应用提供了途径。