In this paper, crystalline V 2 O 3 and amorphous V 2 O 3 /C products are synthesized via one-pot solution combustion synthesis (SCS) method (completed within 2 minutes).The characteristics of combustion products could be tuned by changing the amounts of glucose. The as-synthesized crystalline V 2 O 3 nanopowder consists of nanoparticles with average size of ~100 nm. Amorphous V 2 O 3 /C composite exhibits large porous microsheet structure in which oxygen vacancy-enabled amorphous V 2 O 3 particles are embedded into N-doped carbon microsheets. The existence of oxygen vacancies can promote energetics for the transport of electrons and ions and maintain the integrity of sample surface morphology. Moreover, N-doping can enhance electrical conductivity and promote the diffusion of electrons and lithium ions. Amorphous V 2 O 3 /C composite possesses high reversible capacity and superior cycling stability (833 mAh g −1 at 1 A g −1 after 250 cycles, 867 mAh g −1 at 0.1 A g −1 after 100 cycles), indicating its potential as excellent anode material for lithium-ion battery. The proposed one-step, time-and energy-efficient SCS method has the potential to prepare other oxygen vacancy-enabled transition metal oxides for energy storage.
K E Y W O R D Slithium-ion battery, nitrogen-doping, oxygen vacancy, solution combustion synthesis, vanadium trioxide 2644 | WU et al.
SUPPORTING INFORMATIONAdditional supporting information may be found online in the Supporting Information section. How to cite this article: Wu H, Zhang Z, Qin M, et al. Solution combustion synthesis of crystalline V 2 O 3 and amorphous V 2 O 3 /C as anode for lithium-ion battery. J Am Ceram Soc. 2020;103:2643-2652. https ://doi.