本研究使用GR級硫酸鹽類使用特定濃度、比例等條件，模擬將已經過500攝氏溫度火法焙燒的鋰電池，在燒除內部黏結劑，以及內部有價金屬進行硫酸1g/15ml濕法浸出(leaching)並使用氨水進行pH=7.4下萃取(extraction)步驟後，提升pH值，並額外使用硫酸鎳添加於溶液之中，將含有鎳、鈷、錳之溶液成分，使用不同的鎳鈷錳配置比例，以及不同的pH值搭配，找出可以配合萃取製程後，在濃度小於0.3M下之鋰電池三元前驅物的共沉澱製程的最佳與次佳參數。

使用9:0.5:0.5(955)、8:1:1(811)與6:2:2(622)作為前驅物共沉澱前，鎳鈷錳金屬溶液的三元比例配置，在配置一開始，經由沸騰去除水中之氧離子後，進行硫酸鹽類之添加，添加的比例為1g/15ml，配置成各種比例之溶液，先後使用10%氫氧化鈉溶液作為pH值調整的之酸鹼調節劑調整至目標pH(10.5~12.5)，後再使用28%wt之氨水作為絡合劑的使用，使金屬離子可以形成M(OH)2之形式沉澱於溶液下。

使用ICP-MS、XRD、SEM等作為分析的裝置，對於該M(OH)2確定晶體形式，利用XRD對繞射峰進行分析，SEM進行表面觀測其表面結晶行為，ICP-MS則偵測前驅物在各種參數下，所含的NCM元素比例。
結果顯示，在955溶液配置下，pH值在10.5、11.0、12.0的參數，可以共沉澱出含較高鎳濃度的前驅物，在pH=10.5下，鎳含量達到了61.4%，且在表面分析中，有較為特別的表面結晶現象產生。811溶液配置下，在pH值為12.0與12.5兩個參數，可以有鎳含量較高的前驅物產生，分別為46.5%與51.7%，在這個溶液配置的XRD圖分析中，可以明顯看到鈷、錳氫氧化物的繞射峰產生。622溶液配置下，僅有pH=12.5的情況可以具有高鎳前驅物的產生，鎳含量達到了50.2%，但在XRD的分析之中，其並未明顯表現明確的Ni(OH)2的繞射峰，僅有微弱之跡象，在表面的觀測也與其他溶液比例相比下，較無明顯結塊之現象。

根據本研究模擬在1g/15ml的溶液中，透過使用GR級硫酸鹽類配置，並使用氨水與氫氧化鈉進行鋰電池前驅物的共沉澱，評估實際回收流程在硫酸浸出液中萃取後的再製結果，結果顯示，可形成的前驅物多為523、622等形式，大多集中在高pH值(12以上)之區域。針對鋰電池回收過程中的金屬提取及前驅物共沉澱製程進行了深入探討，通過調控pH值與金屬比例配置，可調整鋰電池回收過程中的最終前驅物的含量比例，有助於鋰電池的再製與資源循環利用。

Because of the development of modern science and technology, lithium-ion batterie play an important role in today's energy storage market. It is expected that in the next few years, the use number of electric vehicles will increase several times greater than now, that will be leading to increased use and disposal of lithium-ion batteries. If not properly handled the garbage of lithium-ion batteries, can cause significant environmental damage, so it is necessary to recycle and remanufacture them. The commonly used recycling methods are hydrometallurgy and pyrometallurgy. Pyrometallurgy uses high temperatures to recover metals,hydrometallurgy uses various solvents or acids for leaching, followed the use of complexing agents or precipitants to adjust the pH for the recovery of individual metals. In this study, we combined previous recycling processes from our laboratory, and after pyrometallurgical and hydrometallurgical recovery processes, the Simulation of concentrations and ratios after previous experiments, we adjusted the pH value and the ratio of nickel, cobalt, and manganese in the solution to co-precipitation. The results showed that with a solution ratio of 9:0.5:0.5 and a pH of 10.5, the best crystallinity and ternary ratio were obtained, the Ni retio is 61%.

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