- 學位論文
普魯士藍奈米顆粒之製備及做為電池電極材料之研究
Preparation of Prussian Blue Nanoparticles and Its Application as Battery Electrode Materials
摘要
本研究報告了三種方法製備的(Prussian Blue,PB)並應用於電化學離子電池電極材料的研究。在此研究中，我們探究了三種不同大小的普魯士藍顆粒在以KCl為電解質時的性能，包括傳統PB、直徑約為150 nm的普魯士藍奈米顆粒（PB Nanoparticles, PBN）以及直徑約為280 nm的普魯士藍奈米立方體介晶（PB Mesocrystals, PBM），並進行了實驗和比較。 研究發現，在50 mA/g的電流密度下進行循環壽命測試時，PB、PBN和PBM的電容量分別為93.5 mAh/g、95.9 mAh/g和98.89 mAh/g。而在200 mA/g的電流密度下進行循環壽命測試時，PBM表現出最為優異，經過100個循環後仍保有63 %的電容量，其次是PBN的41 %，而PB只有13.2 %。此外，在500 mA/g的電流密度下，PBM仍保有59 %的電容量，且在切換回50 mA/g後還能保留88.6 %的電容量。 這些研究結果顯示，PBM可能是一種具有潛力的電池電極材料，具有優越的循環穩定性和較高的電容量。這些特點可以歸因於PBM的特殊晶體結構和較高的結晶度，使其具有更好的離子儲存和釋放性能，進而提高電容量和循環穩定性。
並列摘要
This study presents the investigation of three preparation methods for Prussian Blue (PB) and their application as electrode materials in electrochemical ion battery research. We explored the performance of three different-sized Prussian Blue particles, including conventional PB, PB nanoparticles with a diameter of approximately 150 nm (PBN), and PB mesocrystals in the form of nanocubes with a diameter of approximately 280 nm (PBM), using KCl as the electrolyte. Experimental comparisons were conducted. The study findings revealed that under a current density of 50 mA/g during cyclic life testing, the specific capacities of PB, PBN, and PBM were 93.5 mAh/g, 95.9 mAh/g, and 98.89 mAh/g, respectively. When the current density increased to 200 mA/g for cyclic life testing, PBM exhibited the best performance, retaining 63 % of its initial capacity after 100 cycles, followed by PBN with 41 %, while PB only retained 13.2 %. Furthermore, at a current density of 500 mA/g, PBM still maintained 59% of its capacity and retained 88.6 % of its capacity when switched back to 50 mA/g. These research findings indicate that PBM shows promise as a potential electrode material for battery applications, demonstrating superior cyclic stability and higher specific capacity. These characteristics can be attributed to the unique crystal structure and higher crystallinity of PBM, which enable better ion storage and release performance, thereby enhancing both capacity and cyclic stability.