Dodecahedron-Shaped Porous Vanadium Oxide and Carbon Composite for High-Rate Lithium Ion Batteries

Abstract

Carbon-based nanocomposites have been extensively studied in energy storage and conversion systems because of their superior electrochemical performance. However, the majority of metal oxides are grown on the surface of carbonaceous material. Herein, we report a different strategy of constructing V2O5 within the metal organic framework derived carbonaceous dodecahedrons. Vanadium precursor is absorbed into the porous dodecahedron-shaped carbon framework first and then in situ converted into V2O5 within the carbonaceous framework in the annealing process in air. As cathode materials for lithium ion batteries, the porous V2O5@C composites exhibit enhanced electrochemical performance, due to the synergistic effect of V2O5 and carbon composite.

Micro‐ and Nano‐Structured Vanadium Pentoxide (V2O5) for Electrodes of Lithium‐Ion Batteries

“…Another novel‐structured V 2 O 5 –carbon composite material as LIB electrodes is shown in Figure b. The figure demonstrates the micron‐sized and dodecahedron‐shaped porous composite was the result of research from Zhang and co‐workers in 2016 . Through the carbonization of the Zeolitic imidazolate frameworks (ZIFs) as metal organic frameworks, the porous compound with the dodecahedron shape composed of carbon and cobalt nanoparticles formed.…”

Systematic study on preparation of copper nanoparticle embedded porous carbon by carbonization of metal–organic framework for enzymatic glucose sensor

“…23,24 However, these materials are usually unstable to moisture, and hence, their application in water-based elds has been limited. There have been several studies (the effects of coating, 25 compositing, 26 and carbonization on MOFs [27][28][29][30][31][32][33][34] ) to overcome this problem. Notably, carbonization of MOFs is of great interest because the MOFs contains both a metal and a carbon sources for the preparation of composite materials.…”

“…As a result of this concept, the production of many metal oxide-embedded porous carbon composites has been recently reported. [31][32][33][34][35][36][37] The prepared materials exhibited interesting catalytic activity in organic transformation, 31 supercapacitor 33 /battery 34 electrode and sensing [35][36][37] applications. However, pure metal-embedded porous carbon composites have rarely been prepared from MOFs to date.…”

Microtubular SnO2/V2O5 Composites Derived from Cellulose Substance as Cathode Materials of Lithium‐ion Batteries

“…The selected area electron diffraction (SAED) pattern of an individual microtube shown in the inset of Figure e displays a combined diffraction pattern of spots and rings. The spots labeled as 1, 2 and 3 are indexed to the (411), (002) and (331) planes of orthorhombic V 2 O 5 nanorods,, while the diffraction rings from inside out are indexed to the (110), (101), (111) and (301) planes of the tetragonal SnO 2 nanoparticles ,. The high‐resolution TEM (HR‐TEM) image (Figure f) of the microtube surface shows the lattice fringes with interplanar distances of 0.343 nm on the nanorod and 0.337 nm on the nanoparticle, corresponding to the (110) lattice plane of orthorhombic V 2 O 5 phase and the (110) lattice plane of tetragonal SnO 2 phase, respectively.…”