噴霧造粒製備混成有機/無機釩酸鹽的陰極電化學性能研究

Cathodic Electrochemical Performance of Spray Granulated Organic/Inorganic Hybrid Vanadates

戴佳芬(Chia-Fen Tai)

指導教授 ： 唐宏怡

國立暨南國際大學/科技學院/應用化學學系/碩士(2023年)

https://doi.org/10.6837/ncnu202300018

摘要

實驗以噴霧造粒法(spray granulation)製備三聚氰胺插層五氧化二釩粉粒做為鈉離子電池的正極材料，相較於純五氧化二釩其ｃ軸層間距提升56.87 %更利於鈉離子在結構中穿梭，在2.0 V 至3.9 V 電壓範圍其初始電容量可達到108 mAh/g ，在0.1 C經過50圈循環充放電後其容量保持率為99.31 %；而鋰離子電池在1.9 V至3.4 V電壓範圍初始容量則可達到152 mAh/g，在1 C經過300圈循環充放電後其容量保持率為92.21 %。

關鍵字

噴霧造粒 ； 三聚氰胺 ； 鈉離子二次電池

並列摘要

The spherical grains of melamine intercalated vanadium pentoxide nanofibers are
prepared by spray drying technique and utilized as cathode material for alkali ion
batteries. Compared with the commercially available vanadium pentoxide, the c-axis
interlayer spacing increased by 56.87 %, which is more conducive to shuttling alkali
ions in the structure. The granulated cathode displays a good charge/discharge
reversibility for sodium ions. In the voltage range from 2.0V to 3.9V, an initial
discharge capacity of 108 mAh/g is attainable with 99.31 % capacity retention after
50 cycles of charge/discharge test at 0.1 C.
Excellent lithium ion intercalation/deintercalation reaction is demonstrated in 300 cycles of 1 C test having 92.21 % capacity retention.

並列關鍵字

Spray granulation ； Melamine ； Sodium ion battery

參考文獻

參考文獻

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