 Ni1-X-Co-X at carbon composites were synthesized using a solvathermal method followed by a kneeling treatment. The resulting material had a unique structure consisting of a metalorganic framework, MOF, skeleton and magnetic particles slash clusters. This structure allowed for the formation of a core shell architecture, which enhanced the absorption of electromagnetic waves. Furthermore, the absorbing material could be tailored to absorb specific frequencies depending on the amount of absorbers used. This article was authored by Lei Wang, Mingqiu Huang, Xie Fengyu and others.