1 research outputs found
Facile Construction of Novel 3‑Dimensional Graphene/Amorphous Porous Carbon Hybrids with Enhanced Lithium Storage Properties
Presently,
porous materials have become essential to many technological
applications. In this account, 3-dimensional skeleton composite materials
consisting of a core–shell amorphous porous carbon/multilayer
graphene are synthesized by chemical vapor deposition on Ni foam using
a facile one-step growth method. The data suggest that these composites
have not only outstanding electrical and mechanical properties of
the multilayer graphene but also the mesoporous characteristics of
the amorphous carbon. Moreover, the composited carbon materials perfectly
inherit the macroporous structure of Ni foam, and the amorphous carbon
core in the skeleton serves as a cushion to buffer the volume variation
after the removal of Ni. The carbon composites reveal ultralow density
(4.45 mg cm<sup>–3</sup>) and high conductivity (45 S cm<sup>–1</sup>), essentially issued from the perfectly preserved
structural integrity of graphene. The novel carbon composites can
be used as anodes for lithium ion batteries. After these carbon composites
are incorporated with NaBiO<sub>3</sub>, superior electrochemical
activities above 2 V can be achieved with a discharge capacity of
∼300 mAh g<sup>–1</sup>