本實驗探討對橄欖石結構的磷酸鋰鎳、磷酸鋰錳材料進行部分之過渡金屬取代。實驗採用溶膠凝膠法，並透過調整在溶膠階段的藥品添加比例，能夠成功合成出LiNi1-xFexPO4 、LiMn1-xCoxPO4。電性測試分兩部份進行，第一部份為鐵取代之磷酸鋰鎳材料，第二部分為鈷取代之磷酸鋰錳材料。
在第一部份，歸納磷酸鋰鎳的XRD、電性測試結果以及現有之文獻資料，此材料目前的問題在於脫鋰後的NiPO4並不是一穩定存在相，導致觀察不到放電平台。
在第二部分，實驗的合成參數經過調整，能找出一組電性表現最佳的，優化的參數其首圈放電容量為98 mAh/g，20圈後的電容量能維持首圈的86.7 %。
實驗另外嘗試以Li4Zn(PO4)2材料作為導離子的添加物，在碳包覆步驟加入，散佈在碳層中，能進一步改善電性。透過此方法改善的LiMn1-xCoxPO4材料，其首圈放電容量為132.8 mAh/g。

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