近年來，軟性鋰離子系統不斷增長的需求。因此，研究具有高機械柔韌性和良好電子和鋰離子導電性的可靠電極變得至關重要。然而，傳統的幾微米厚度的銅集流體在 LIB 中佔很大比例，使得低能量密度的 LIB 的柔韌性大大降低。第一部分針對負極收集器 (銅箔)，使用具量產性且簡易之濕式蝕刻工藝製造超薄銅層（<1 μm）。該過程為準備好的電極提供了必要的柔韌性。使用新型 LTO/Cu 作為負極的LIB 電池在 0.1C 的 40 次充放電循環期間表現出 123 mA h/g 的能量容量。此外，使用 LTO/Cu 的 LIB 的庫侖效率在 40 次循環後仍保持在 99%以上。這些結果表明了這種新型負極的用途及其在高密度和軟性商用鋰離子電池中的潛力。第二部分製造軟性無鋁箔LiFePO4 (LFP)正極。所獲得的電容量顯示出與具有鋁箔收集器的傳統電極相似但比傳統電極彎曲性能有更好的柔韌性。這項研究為開發用於低成本和軟性鋰離子電池的無金屬收集器開闢了一條新途徑。

Recently, there has been a growing demand for flexible Li-ion systems. Therefore, it becomes crucial to investigate reliable electrodes with high mechanical flexibility, good electronic and Li-ion conductivity.
However, the traditional copper current collector with a thickness of several micrometers occupies a large proportion in LIBs, which makes the flexibility of LIBs with low energy density greatly reduced. The first part is aimed for the negative collector (copper foil), using a mass-producible and simple wet etching process to fabricate an ultra-thin copper layer (<1 μm). This process provides the necessary flexibility for the prepared electrodes. The LIB battery using the novel LTO/Cu as anode exhibits an energy capacity of 123 mA h/g during 40 charge-discharge cycles at 0.1C-rate. Furthermore, the coulombic efficiency of LIB using LTO/Cu remained above 99% after 40 cycles.
These results demonstrate the utility of this novel anode and its potential in high-density and flexible commercial lithium-ion batteries. The second part manufactures the flexible aluminum foil-free LiFePO4 (LFP) cathode.
The obtained capacitance shows similar flexibility to conventional electrodes with aluminum foil collectors but better bending properties than conventional electrodes. This research opens up a new avenue for developing flexible LIB for low-cost and metal-free collectors.

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