CAJ | 학술논문

以V_2O_5粉末为原料, 在常压下制备新型纳米结构V_(10)O_(24)·12H_2O材料, 并分析了其反应机制. 利用XRD, TEM, TG-DSC, FTIR和XPS对其结构和形貌等进行了表征. 结果表明, V_(10)O_(24)·12H_2O的层间距d_(002)≈1.43 nm;微观形貌为球形, 球径40～60 nm;有V~(4+)和V~(5+)两种化学状态;IR峰的变化主要由晶格膨胀和V~(4+)引起;存在吸附水、层间水及结晶水.
이V_2O_5분말위원료, 재상압하제비신형납미결구V_(10)O_(24)·12H_2O재료, 병분석료기반응궤제. 이용XRD, TEM, TG-DSC, FTIR화XPS대기결구화형모등진행료표정. 결과표명, V_(10)O_(24)·12H_2O적층간거d_(002)≈1.43 nm;미관형모위구형, 구경40～60 nm;유V~(4+)화V~(5+)량충화학상태;IR봉적변화주요유정격팽창화V~(4+)인기;존재흡부수、층간수급결정수.
The novel mixed-valence vanadium oxide V_(10)O_(24)·12H_2O nano-structure were prepared by Sol-Gel process with the industrial V_2O_5 powder as the starting materials and a simple peroxyde reaction route in this paper, and the formation mechanism has been clarified. XRD, TEM, TG-DSC, FTIR and XPS measurements were used to obtain structure and infrared vibration of the V_(10)O_(24)·12H_2O. The analyses showed that the V_(10)O_(24)·12H_2O have a nano-structure with porous, and the diameter about 40-60 run. The infrared absorption properties were discussed based on the vibration model and the change of bond length before and after reaction. It has reveal that shift of the absorption peaks of the V_(10)O_(24)· 12H_2O was caused by the lattice expansion and formation of low valence vanadium ion in V_(10)O_(24)·12H_2O. This mixed-valence vanadium oxide has a nanoporous structure which make it a potential candidate to be used as cathode in lithium-based batteries.