以奈米磁顆粒提升Na-FeFe普魯士藍 二次鋰電池效率

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/83520

Title:	以奈米磁顆粒提升Na-FeFe普魯士藍二次鋰電池效率
Authors:	張智軒;CHANG, CHIH-HSUAN
Contributors:	物理學系
Keywords:	普魯士藍
Date:	2020-06-29
Issue Date:	2020-09-02 15:45:41 (UTC+8)
Publisher:	國立中央大學
Abstract:	近年來普魯士藍被利用在鋰電池的負極材料製作由於其製作方法簡單利用其中心孔洞空間能儲存 Li、 Na、 K等金屬的特性對於作為鈉電池或鉀電池的開始激起大家的研究。本實驗利用 Na-FeFe PBA做一系列的實驗來分析樣品結構以及嘗試提升電池效率。前半段做普魯士蘭的分析，利用 X光繞射以及中子散射來分析樣品，由 GSAS分析可得兩樣品 Na-FeFe_1 : Na0.651Fe[Fe(CN)6]0.84[H2O]0.15∙0.18H2O ; 平均粒徑 14.1 nm ; Na-FeFe_2 : Na0.84Fe[Fe(CN)6]0.81[H2O]0.19∙0.17H2O ; 平均粒徑 13 nm。實驗目的為了提升電池效率做了兩種嘗試於極片製作時添加奈米顆粒分別為 11 nm鎳、 7 nm銀和 30 nm石墨，將奈米顆粒與普魯士藍均勻混和製作成電池第二個方法為電池做充放電時外加磁場。經充放電結果可看出添加其他奈米顆粒對電池充放電沒有提升的效果添加奈米鎳的效果最好能有效降低電池的整體的衰退率與未添加奈米顆粒電池比較電池的衰退衰退率 : Na-FeFe_1降低 18 NaFeFe_2 降低 3 % 於電池初期充放電時減少衰退率的比例最為明顯但外加磁場對電池沒有看出變化。;In recent years, Prussian blue has been used in the production of negative materials for lithium batteries. Due to its simple manufacturing method, its central hole space can store the characteristics of metals such as Li, Na, K, etc. the study. This experiment uses Na-FeFe PBA to do a series of experiments to analyze the sample structure and try to improve the battery efficiency. In the first half of the analysis of Prussia, X-ray diffraction and neutron scattering were used to analyze the samples. Two samples ofwere obtained by GSAS analysis Na-FeFe_1: Na0.651Fe[Fe(CN)6]0.84[H2O]0.15∙0.18H2O; average particle size 14.1 nm; Na-FeFe_2: Na0.84Fe[Fe(CN)6]0.81[H2O]0.19∙0.17H2O; average particle size 13 nm. The purpose of the experiment was two attempts to improve the efficiency of the battery. Nanoparticles were added to the pole piece during the production of 11 nm nickel, 7 nm silver and 30 nm graphite, and the nanoparticles and Prussian blue were evenly mixed to make a battery. The second This method applies an external magnetic field when charging and discharging the battery. It can be seen from the charging and discharging results that the addition of other nanoparticles has no effect on the battery charge and discharge. The addition of nanonickel has the best effect and can effectively reduce the overall decline rate of the battery. Compared with the non-added nanoparticle battery Decay and Decay Rate: Na-FeFe_1 decreased by 18% and NaFeFe_2 decreased by 3%. During the initial charge and discharge of the battery, the rate of reduction of the decline rate was the most obvious, but the external magnetic field did not change the battery.
Appears in Collections:	[Graduate Institute of Physics] Electronic Thesis & Dissertation

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