各國對於再生能源的推動以及人類社會對 3C 產品高頻率充電的需求帶動了壓電奈米發電機這類能源捕獲裝置以及鋰離子電池這種熱門的儲能元件的發展，兩者相互結合的自供電系統因而被視為極具前瞻性的系統，如 Figure 1 示。為了適應長期機械能的捕獲，具有導離子性、電絕緣性，以及高延展性、柔韌性的軟性高分子壓電材料被視為自供電鋰離子電池相當重要的一環，高分子壓電材料中的 PVDF-TrFE 共聚物擁有出色的理論縱向壓電係數(30~40 pC/N)，是純 PVDF 2 左右。
然而，現階段已發表之單一元件自供電鋰離子電池研究存在著尚未釐清之自供電機制、錯誤的自供電量測手法、對稱輸出訊號以及誇大之壓電性能等疑慮，為單一元件之自供電鋰離子電池的可行性增添了許多不確定性。
本研究利用電暈極化增益 PVDF-TrFE 壓電性，並探討極化對偶極排列與輸出性能的影響，同時提出一種透過調控量測頻率以控制壓電電位輸出之不對稱性的方法，最後透過一系列量測手法觀察不同極性下的電化學行為，進而重新評估此元件設計下自供電行為的可能性。

The promotion of renewable energy in various countries and the demand for high-frequency charging of 3C products in human society has driven the development of energy harvest devices such as piezoelectric nanogenerators (PENGs) and popular energy storage components such as lithium-ion batteries (LIBs). Self-powered systems are thus regarded as prospective systems, as shown in Figure 1. However, the published research on all-in-one self-powered lithium-ion batteries has still not clarified the self-powered mechanism, wrong self-powered measurement methods, symmetrical output signals, and exaggerated piezoelectric performance. The viability of lithium-ion batteries adds a lot of uncertainty. In this study, corona poling is used to gain the piezoelectricity of PVDF-TrFE, and the effect of polarization on the dipole arrangement and output performance is discussed. At the same time, a method to well-control the asymmetry of the piezoelectric potential output by adjusting the measurement frequency is proposed. Finally, a series of measurement methods are used to observe the electrochemical behavior under different polarities and then re-evaluate the possibility of self-powered behavior under this device design.

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