如何於高分子電解質(polymer electrolyte)中有效的改善鋰離子傳導環境，進而提高導電度為目前高分子電解質研究中極重要的議題之一。本研究中將介紹一個新穎的材料-嫁接高分子之石墨烯，並將其導入於高分子電解質中於鋰電池(lithium ion battery)應用中。為了發展有效而且可靠的策略對於擁有強大內聚力和表面慣性的石墨進行嫁接改質，我們選擇利用共價鍵結的方式將石墨烯官能基化，以達成精確的介面控制。一個以炔類構成的石墨烯(Alkyne-FG)為本研究核心材料，結合可逆鏈轉移聚合法(reversible additional-fragmentation chain transfer)和鏈接化學(click reaction)與高分子結合以製備出具有高分子嫁接的石墨烯(polymer-functionalized graphene；polymer-FG)。此外，探討不同形態及種類嫁接高分子之石墨烯的添加及鋰鹽類及其修飾石墨烯之添加量對固態電解質膜特性之研究，包含結晶性、熱性質、解離度及離子導電度等性質。
最後將製備出的固態電解質薄膜應用於鋰二次電池，並使用商業用陰極材料磷酸鋰鐵，進行電化學以及充放電測試。

There is a growing shift from liquid electrolytes toward solid polymer electrolytes, in energy storage devices, due to the many advantages of the latter such as enhanced safety, flexibility, and manufacturability. The main issue with polymer electrolytes is their lower ionic conductivity compared to that of liquid electrolytes. Nanoscale fillers such as silica and alumina nanoparticles are known to enhance the ionic conductivity of polymer electrolytes. Although graphene have been used as fillers for polymers in various applications, they have not yet been used in polymer electrolytes as they are conductive and can pose the risk of electrical shorting. In this study, we show a powerful and reliable strategy to synthesis covalently functionalize graphene. The polymer electrolytes whose ion-conducting channels are physically and chemically modulated by the polymer functionalize graphene. We show that such hybrid nanofillers increase the lithium ion conductivity of PEG electrolyte by almost 2 orders of magnitude. Furthermore, the lithium ion transference number was tLi+ of PEG/PILB-G/LiClO4 at 60 ◦C was as high as 0.68 , which was also three times higher than that of PEG/LiClO4.

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