Microwave

Quantum mechanics

Composite number

Engineering

Biology

Fabrication

Materials science

Absorption (acoustics)

Telecommunications

Carbon fibers

Chemical engineering

Geology

Oceanography

Physical chemistry

Alternative medicine

Physics

Reflection loss

Biomass (ecology)

Agronomy

Carbonization

Conductivity

Composite material

Medicine

Chemistry

Scanning electron microscope

Pathology

Applied Surface Science

The composite material of Ni(OH)2/biomass carbon have been prepared by a facile “carbonization–activation” procedure from Jackfruit peel and a subsequent water-bathing precipitation process. The biomass carbon material after activation (AC) is constituted of small particles and achieves a large specific surface area of 1602 m2/g. After decoration of Ni(OH)2 nanosheets, the Ni(OH)2/AC composites were investigated the microwave absorption performances in 2–18 GHz. The maximum reflection loss of the Ni(OH)2/AC composites reached −23.6 dB at 15.48 GHz with a thickness of 6 mm. Moreover, the fundamental mechanism based on conductivity, the polarization and defects is discussed. The present investigation offers a new possibility for the biomass based fabrication of potential microwave absorbing materials.

Microwave absorption performance of Ni(OH)2 decorating biomass carbon composites from Jackfruit peel