Study of the Air-Flow Management of the Zinc-Air Cell 洪梓桓、黃國修
E-mail: 9419538@mail.dyu.edu.tw
ABSTRACT
This study intends to investigate air flow management of zinc-air cell. Zinc-air cell is a kind of electrochemical batteries that could be taken as air-depolarized cell. Its development is even earlier than fuel cell. Zinc-air cell, developed in the eighteenth century, is different from alkaline electrolyte zinc-air cell today. Zinc-air cell was used NH4Cl acidity electrolyte at that time. Moreover, in the eighteenth century, the anode was zinc and the cathode was carbon combining with platinum. The device contained only small current density so that it can not generate electric power capability. Today, zinc-air cell is developed quickly due to the gas electrode and pore structure material technology. Air is very important for zinc-air cell, and would decrease cell performance while the cathode does not have enough gas. Carbon dioxide, one of the air component, would react with alkaline electrolyte and become a carbonate compound. Carbonate compound would affect electrolyte performance. This research will apply fan to produce flow and compression gas and examine how the different air flow management method will led to different cell performance. The experiment method will be galvanostatic method, a kind of voltammetry. It will use different wind velocity and gas pressure for operation parameters during cell discharge. Besides, humidity are also very important effects for cell performance. In a word, performance operation surrender parameters and air flow management method are presented in this research.
Keywords : Zinc-air cell ; Air flow management ; Compression gas ; Galvanostatic method ; Voltammetry Table of Contents
授權書 iii 中文摘要 vii 英文摘要 viii 誌謝 x 目錄 viii 圖目錄 xi 表目錄 xiv 符號說明 xv 第一章 問題描述 1 1.1 前言 1 1.2 燃料 電池的歷史及沿革 2 1.3 燃料電池基本原理 6 1.4 鋅空氣電池發展 7 1.5 鋅空氣電池作用原理 10 1.6 鋅空氣電池構造 12 1.6.1 鋅陽極 12 1.6.2 電解液 13 1.6.3 空氣極 13 1.7 本文目標 16 第二章 文獻回顧 18 2.1 燃料電池及鋅空電池空氣流管理與流道設 計 18 2.2 質傳現象對電池性能影響之研究 25 2.3 鹼性燃料電池性能研究 28 2.4 金屬空氣電池的發展 29 第三章 研究方法與 進行步驟 31 3.1 鋅空氣電池工作原理 31 3.2 電化學量測方法 33 3.3 量測元件及電池本體 35 3.3.1 量測元件 35 3.3.2 電池本 體 36 3.4 實驗進行步驟 39 3.4.1 實驗參數規劃 40 3.4.2 實驗模組架設 42 3.4.3 電解液調配 47 3.4.4 電池組裝 47 3.4.5 實驗量 測 48 3.4.6 數據擷取及分析 49 第四章 結果與討論 50 4.1 鋅空電池性能量測 50 4.2 鋅空氣電池放電測試 52 4.3 風扇模組實 驗結果 54 4.3.1 風扇模組比較 54 4.3.2 風扇風速對電池性能之影響 56 4.4 壓力模組實驗結果 59 4.4.1 不同壓縮空氣模組比較 59 4.4.2 壓縮空氣與壓縮氧氣模組比較 62 4.5 濕度模組實驗結果 65 4.6 實驗之不準度分析 68 第五章 結論 71 第六章 未來展 望 73 參考文獻 74 附錄 79
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