本研究以化學浴法於碳布上製備氧化鋅奈米線陣列，並利用水熱法沉積鋅錫氧化物殼層結構，成功合成出氧化鋅-鋅錫氧化物核-殼奈米線陣列，並應用於鋰離子電池之無黏結劑負極。由掃描式及穿透式電子顯微鏡分析得知氧化鋅奈米線陣列的直徑及長度分別約為50 nm和1 μm，鋅錫氧化物殼層結構則是由直徑約6~14 nm之鋅錫氧化物顆粒組成，且殼層厚度約為15 nm。由X光繞射儀與穿透式電子顯微鏡分析得知所製備的鋅錫氧化物為ZnSnO3。電性測量方面，鋅錫氧化物殼層明顯改善氧化鋅奈米線陣列的電性表現。相較於氧化鋅奈米線陣列電極在200 mA/g及2000 mA/g 的充放電速率下分別具有344及90 mAh/g的電容量，氧化鋅-鋅錫氧化物核-殼奈米線陣列電極則具有1108及435 mAh/g的電容量。由電化學阻抗分析得知氧化鋅-鋅錫氧化物核-殼奈米線陣列擁有較低的電荷轉移阻力及較高的鋰離子擴散係數。以200 mA/g之充放電速率進行穩定性測試，第一圈庫倫效率由氧化鋅奈米線陣列電極之56%提升至化鋅-鋅錫氧化物核-殼奈米線陣列電極之67%。且反覆充放電120次後，加了鋅錫氧化物殼層的電容量由672 mAh/g提升至864 mAh/g，並具有近100%的維持率。由前述可知，本研究成功藉由鋅錫氧化物殼層結構改善氧化鋅奈米線的電性表現。所製備的氧化鋅-鋅錫氧化物核-殼奈米線陣列在高充放電速率下具備高電容特性，且穩定性佳。

ZnO@ZnSnO3 core-shell nanowire array has been successfully prepared by first coating ZnO NW on the surface of carbon cloth, followed by hydrothermal synthesizing the protective layer composed of ZnSnO3 quantum dots. When evaluated directly as binder-free anode for lithium-ion batteries, the resultant ZnO@ZnSnO3 core-shell nanowire array electrodes exhibit excellent lithium storage performance with an improved cycling performance (approximate 33 % capacity loss after 120 cycles at 200 mA g −1 with a capacity retention of 864 mA h g −1 at the 120th cycle), and better rate capability (a reversible capability of 1028, 829, 582, 545, and 388 mA h g−1 at 200, 500, 800, 1000, and 2000 mA g−1, respectively) compared to ZnO nanowire array electrode. The remarkably improved electrochemical performances could be attributed to the integration of ZnSnO3 quantum dots which could facilitate the electron transport and lithium ion diffusion, and buffer the volume change during repeated charge/discharge process effectively.

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