外加磁場對Na-FeFe普魯士藍二次鋰電池效率影響

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题名:	外加磁場對Na-FeFe普魯士藍二次鋰電池效率影響
作者:	楊安柔;Yang, An-Jou
贡献者:	物理學系
关键词:	普魯士藍;Na-FeFe
日期:	2021-07-19
上传时间:	2021-12-07 12:04:29 (UTC+8)
出版者:	國立中央大學
摘要:	普魯士藍因容易合成且製作低成本、環保、理論電容高、循環壽命長，並具有穩定且特殊的網狀框架結構，提供離子游離的通道與儲存空間，中心孔洞大且均勻，可以容納Mg、Ca、Zn和Al等大多數鹼金屬陽離子，為具備潛力的鹼性離子電池的陰極材料。本實驗在使用沉澱法合成NaFeFe(CN)6，滴定過程將溫度控制為50°C和70°C，製作出兩種不同粒徑大小的樣品，並利用X光繞射儀分析晶體結構與化學組成成分。將其製作成電池陰極極片，烘乾極片前對其外加電場，使其電偶極矩轉向電場方向，探討其對電池充放電效率影響。製作成鋰電池以定電流方式做充放電，在電池做充放電時外加磁場，帶電離子受到磁場影響改變其運動方向，探討磁場對電池充放電效率影響。使用不同電流對電池充放電，觀察不同電流對電池電容量的影響。 ;Prussian blues have advantages such as ease of synthesis, low cost, environmental friendliness, high theoretical capacity, and long cycle life. It has a stable and special mesh frame structure, which provides channels and storage space for ion dissociation. The center hole is large and uniform that be able to accommodate most alkali metal cations such as Mg, Ca, Zn and Al. It is the cathode material of the alkaline ion battery with potential. In this experiment, the co-precipitation method was used to synthesize NaFeFe(CN)6. The temperature was controlled to 50°C and 70°C during the titration process, so two samples with different particle sizes were produced. The crystal structure and chemical composition were analyzed by X-ray diffraction. It is made into a battery cathode pole piece, and an electric field is applied to the pole piece before drying. Expect the electric dipole moment turned to the direction of the external electric field. The electric field influence on the battery efficiency is discussed. The lithium battery is made into a constant current method for charging and discharging. A magnetic field is applied during the charging and discharging of the battery, then cause the charged ions affected by the magnetic field to change their movement direction. The influence of the magnetic field on the battery efficiency is discussed. Use different currents to charge and discharge the battery, and observe the effect of different currents on the battery capacity.
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