Rational manipulation of multi-metal hybrids with controllable compositions and constructions is evolving as an efficacious strategy for tunable electromagnetic (EM) characteristics and EM wave (EMW) absorption. Herein, a novel bi-orientation etching approach is proposed to regulate the chemical compositions and hybridization construction of Zn/Co hybrids, thence meeting the synergistic interaction among diverse compositions for ultra-high EMW absorption. Attributing to the stepwise heterometallic modification by Zn in Co-ZIFs (Zn@Co-ZIF) and Co in Zn-ZIFs (Co@Zn-ZIF), corresponding pyrolysis products with variable Zn/Co atomic concentration and hybridization states (Zn@Co-C, Co@Zn-C) can be obtained. The Co species was confirmed to have a positive impact on both the dielectric and magnetic response, while an appropriate amount of Zn hybridization in Co substance further enhanced the synergistic effect between multiple loss mechanisms, promoting the minimum reflection loss and effective absorption bandwidth of Zn@Co-C reached -34.99 dB and 5.52 GHz (2.00 mm), respectively. Finally, this work reveals the composition and construction dependency of bimetal hybrids on EMW absorption, which can be a strong reference for developing EMAs with diverse hybridization structures.

对具有可控成分和结构的多金属杂化物的合理操作正在发展为一种有效的可调谐电磁 (EM) 特性和电磁波 (EMW) 吸收策略。在此，提出了一种新的双向蚀刻方法来调节 Zn/Co 杂化物的化学成分和杂化结构，从而满足不同成分之间的协同相互作用，以实现超高 EMW 吸收。归因于 Zn 在 Co-ZIFs (Zn@Co-ZIF) 和 Co 在 Zn-ZIFs (Co@Zn-ZIF) 中的逐步异金属改性，相应的热解产物具有可变的 Zn/Co 原子浓度和杂化状态 (Zn@Co -C, Co@Zn-C) 可以得到。Co 物种被证实对介电和磁响应都有积极影响，而Co物质中适量的Zn杂化进一步增强了多种损耗机制之间的协同效应，促使Zn@Co-C的最小反射损耗和有效吸收带宽分别达到-34.99 dB和5.52 GHz（2.00 mm）。最后，这项工作揭示了双金属杂化物的组成和结构对 EMW 吸收的依赖性，这可以为开发具有多种杂化结构的 EMAs 提供强有力的参考。