臺灣博碩士論文加值系統

本研究是以醇還原法製備鎂鎳合金；乙二醇當還原劑，還原醋酸鎂、醋酸鎳，
氯化鈀為成核劑，限制合金初期粒子粒徑，聚乙烯吡咯烷酮 (PVP)當分散劑，避
免在煅燒前就形成凝團，造成粉體在煅燒後尺寸過大。
改變不同的添加比例，鎂鎳添加莫耳比分冸為 1：1、4：1、10：1，目的是
希望不同的成分比中找出以醇還原法製作最大儲氫量合金，找出針對醇還原法，
所製備的金屬粉末純度不一的方法。
由實驗結果發現，冺用不同前驅物添加比例，配合煅燒氣體(氫氣、氮氣、空
氣)經由 XRD 分析得到，在三種不同氣體煅燒後，只有氫氣煅燒都有產生合金訊
號，三組前驅物添加比例，只有鎂鎳前驅物添加莫耳比 4:1 在不同的鍛燒氣體，產
生合金的訊號；但是在空氣環境中鍛燒，也出現金屬氧化物(MgO)訊號，所以選擇
氫氣為鍛燒氣體比較適合。冺用 Jade6.5 資料庫系統，將在氫氣環境中鍛燒的三組
不同的鎂鎳前驅物添加比例訊號最強的主峰，晶粒的間距(centroid-A)，分冸為
2.89(1-1-(a))、2.1056(4-1-(a))、2.1172(10-1-(a))；晶粒尺寸(D) 分冸為 10.539(1-1-(a))、
8.4085(4-1-(a))、9.3826(10-1-(a))；半峰寬(Peak FWHM)分冸為 0.802(1-1-(a))、
1.004(4-1-(a))、0.899(10-1-(a))晶粒間隙所代表晶粒與晶粒的緻密性，當晶粒緊密會
增加氫進入晶格困難度，晶粒的尺寸代表在一定的空間內可填入多少的晶粒，而
晶粒尺寸越小，所代表可填入晶粒越多，會直接影響吸氫的能力。冺用半峰寬與
結晶率成正比的關係得到半峰寬數值越大，得到結晶率越強，樣品的純度越高，
吸氫量也會跟著增加。由以上三組數據可得到鎂鎳前驅物添加比例在 4:1 的時候經
由氫氣煅燒後的合金材料為本研究的最大儲氫量合金。

This study is an alcohol reduction synthesis of magnesium-nickel alloy; With ethylene
glycol as reductant, Restore the magnesium acetate, nickel acetate, palladium chloride
as nucleating agent, the initial particle size restricted alloy, and then polyvinyl
pyrrolidone (PVP) as a dispersant, to avoid the formation of condensate in the group
before sintering, resulting in a calcining powder after the size is too large.
Change to a different adding proportion magnesium molar ratio of nickel were added
1:1,4:1,10:1, purpose is to to find the different ingredients than the alcohol reduction
method to making the maximum amount of hydrogen storage alloys, find out for
alcohol reduction method, the purity of the metal powder prepared by different
methods.
The experimental results showed that using different precursors adding proportion, with
the calcination gases (hydrogen, nitrogen, air) by XRD analysis obtained after
calcination at three different gases, only hydrogen alloys signals; calcination signals are
generated, three groups of precursor adding proportion, only add a magnesium-nickel
precursor molar ratio of 4:1 at different calcination gases generated alloys signals;
however calcination in the air environment, there have metal oxide (MgO) signals,
chose hydrogen as compared calcination gas fit. Use Jade6.5 database system,in a
hydrogen atmosphere in the three different sets of the calcined precursor adding
proportion magnesium-nickel. Strongest signal peak, the pitch of crystal grains
(centroid-A), respectively, 2.89 (1-1 - (a)), 2.1056 (4-1 - (a)), 2.1172 (10-1 - (a));Grain
size (D), respectively 10.539 (1-1 - (a)), 8.4085 (4-1 - (a)), 9.3826 (10-1 - (a)); Full
width at half maximum (Peak FWHM) were 0.802 (1-1 - (a)), 1.004 (4-1 - (a)), 0.899
(10-1 - (a)). Gap represents the grain crystal grains density, when the grain tightly
increases，difficulty of hydrogen into the lattice, the grain size of an within a space in a
certain number of grains can be filled, and crystal grains the smaller the size, represent
can be filled with more crystal grains. Furthermore the semi-width proportional to the
rate between the crystalline peak width at half the greater the value, obtained the
stronger the rate of crystallization, The higher the purity of the sample, hydrogen
capacity increases will follow. These three sets of data obtained by the
magnesium-nickel precursor ratio 4:1 when adding hydrogen calcination,
research-based alloy material after the maximum storage capacity alloys.

IV


目次
中文摘要………………………………………………………………………………Ⅰ
英 文 摘 要 … … … … … … … … … … … … … … … … … … … … … … … … Ⅱ
致謝…………………………………………………………………………………Ⅲ
目次…………………………………………………………………………………Ⅳ
表目錄…………………………………………………………………………………V
圖目錄…………………………………………………………………………………Ⅵ
第一章前言…………………………………………………………………………01
1-1 氫能源效益……………………………………………………………………01
1-2 儲氫方式………………………………………………………………………02
1-2-1AB 5 型儲氫合金.......................................................................................05
1-2-2 AB 2 型儲氫合金.......................................................................................05
1-2-3 AB 型儲氫合金.......................................................................................06
1-2-4 A 2 B 型儲氫合金.......................................................................................06
1-3 研究動機………………………………………………………………………08
第二章文獻回顧……………………………………………………………………09
2-1 合金製備方式…………………………………………………………………09
2-1-1 球磨法原理與反應機制.........................................................................09
2-1-2 醇還原法原理與反應機制....................................................................09
2-2 儲氫合金化學和熱力學原理…………………………………………………10
2-3 p-c-T 曲線……..……………………………………….....................................15
第三章實驗…………………………………………………………………………16
3-1 藥品…............…………………………………………………………………16
3-2 儀器設備………………………………………………………………………17
3-2-1 場發式電子顯微鏡..................................................................................17
3-2-2 X 光繞射儀（XRD）.............................................................................18
3-3 實驗裝置......................................................................................19
3-4 鎂鎳金屬合金的製備與儲氫性能分析……………………………………21
3-5 二氧化矽包覆鎂鎳金屬合金的製備及儲氫性能分析………………………24
第四章結果與討論…………………………………………………………………26
4-1 FE-SEM 燒結過後表面現象觀察. ……………………………………………26
4-2 EDS 掃描及數據彙整…………………………………..……………….......…25
4-3 XRD 分析............................................................................................................29
4-4 氫氣吸附壓力變化.............................................................................................38 4-5 DSC 熱流變化.....................................................................................................45
4-6 STA 熱流，熱重損失變化...................................................................................52
第五章結論………………………………………………………………………….…54
參考文獻
附錄一.............................................................................................................................57

55

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