隨著現代社會的快速發展，開始出現環境污染、能源枯竭等問題。因此，迫切需要一種環保、可持續的替代能源。鋰離子電池（LIBs）是目前重要的能量儲存方法之一，高性能鋰離子電池的開發對於便攜式電子產品、電動汽車和可再生能源的處存至關重要。為了滿足這些苛刻的需求，需要具有高電容量和循環壽命穩定的鋰離子電池。具有過渡金屬氧化物陰極和石墨陽極的傳統鋰離子電池無法達到電池對能量密度的嚴格要求，因此需要推動開發下一代更高電容量的新型陽極替代品。

矽作為最有前途的替代商業用石墨的陽極，矽具有4200 mAhg-1的容量為石墨陽極（372 mAhg-1）的十倍、環境友好，是地球上最豐富的元素之一且成本低廉，矽成為最有希望的陽極材料。目前矽基陽極的實際應用受到多重挑戰的阻礙。在鋰離子嵌入/嵌出的過程中，矽巨大的體積變化，造成矽材料粉碎和結構損壞，在矽表面形成不穩定的固體電解質中間相（SEI），從而導致不可逆的電容量損失和低初始庫侖效率（CE）。因此本研究使用熱化學氣相沉積法在矽片表面上成長碳化矽再包覆間苯二酚-甲醛樹酯碳塗層，碳化矽堅固結構提供物理強度，有助於保持矽片的完整性，並使矽與電解質發生不可逆反應，RF 碳塗層提供增強的導電性。結合碳化矽和 RF 碳塗層的矽基陽極表現出76% 的 ICE ，經過 100 次充放電循環時保持 955 mAhg-1 的電容量，而原始矽陽極僅剩20 mAhg-1的電容量，證明通過碳化矽製程及包覆RF碳層可以提高可逆容量和循環性能。

With the rapid development of modern society, problems such as environmental pollution and energy depletion began to appear. Therefore, there is an urgent need for an environmentally friendly and sustainable alternative energy source. Lithium-ion batteries (LIBs) are currently one of the most important energy storage methods. The development of high-performance lithium-ion batteries is essential for the storage of portable electronic products, electric vehicles and renewable energy. To meet these demanding requirements, lithium-ion batteries with high capacity and stable cycle life are required. Traditional lithium-ion batteries with transition metal oxide cathodes and graphite anodes cannot meet the strict requirements for battery energy density. Therefore, it is necessary to promote the development of the next generation of new anode alternatives with higher capacitance.

Silicon has a capacity of 4200 mAhg-1 which is ten times that of graphite anodes (372 mAhg-1), is environmentally friendly, is one of the most abundant elements on the earth and is low in cost. Silicon has become the most promising anode material. The current practical application of silicon-based anodes is hindered by multiple challenges. During the process of lithium ion lithiation/delithiation silicon expands and shrinks in volume, resulting in pulverization and structural collapse of the electrode material, forming an unstable solid electrolyte interphase (SEI) on the silicon surface, resulting in irreversible rapid capacity loss and low initial coulombic efficiency (CE). Therefore, this study used thermal chemical vapor deposition to grow silicon carbide on nano-silicon and then coated with resorcinol-formaldehyde resin carbon coating. The strong structure of silicon carbide provides physical strength and helps maintain the integrity of the silicon. And make the silicon and the electrolyte react irreversibly. RF carbon coating provides enhanced conductivity. The silicon-based anode combined with silicon carbide and RF carbon coating exhibits 76% ICE and maintains a capacity of 955 mAhg-1 after 100 cycles, while the silicon anode only has a capacity of 20 mAhg-1. It proves that the reversible capacity and cycle performance can be improved through the silicon carbide process and the coating of the RF carbon layer.

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