氟化石墨是氟原子插入石墨層間的一種石墨層間化合物，粉末狀固體，顏色隨氟碳比的提高逐漸由黑變?yōu)榛野?，直至白色。氟化石墨具有極低的表面能、優(yōu)異的化學(xué)和熱穩(wěn)定性、極好的潤(rùn)滑性能以及超高理論比容量，使其在固態(tài)潤(rùn)滑、防腐防污涂料、鋰電池和其它應(yīng)用領(lǐng)域具有良好的應(yīng)用前景。氟化石墨根據(jù)采用原料不同可細(xì)分為氟化鱗片石墨、氟化球形石墨、氟化膨脹石墨及氟化納米石墨等種類。
Fluorographite is a kind of graphite interlayer compound in which fluorine atoms are inserted into graphite layers. Fluorographite is a powder solid, and its color gradually changes from black to gray to white with the increasing of F/C ratio. Fluorographite has been widely used in solid lubrication, corrosion protective and antifouling coatings Li-CF
x batteries and other fields due to the merits of extremely low surface energy, excellent chemical and thermal stability, outstanding lubrication performance and super theoretical specific capacity. Fluorographite can be subdivided into fluorinated flake graphite, fluorinated spherical graphite, fluorinated expanded graphite and fluorinated nano-graphite according to different raw materials.
電化學(xué)性能 Electrochemistry performance
氟化石墨作為正極材料應(yīng)用于鋰氟化碳電池，在C/10的放電倍率下，可適用于能量型、功率型和倍率型一次電池。
Fluorographite is used as cathode material of lithium-fluorocarbon batteries, at the discharge rate of C/10, it can be applied in energy-type, power-type and high discharge rate-type primary batteries.
能量型氟化石墨放電平臺(tái)≥2.5V，比容量＞800mAh/g，比能量高達(dá)2000Wh/kg以上，是一種性能優(yōu)秀的鋰一次電池正極材料。
The discharge platform of energy-type fluorographite is equal or greater than 2.5V, the specific capacity of energy-type fluorographite is more than 800mAh/g and its specific energy is more than 2000Wh/kg, which is a kind of cathode material with excellent performance in lithium primary battery.
功率型氟化石墨放電平臺(tái)≥2.8 V，比容量＞700 mAh/g，比能量高達(dá)1900Wh/kg以上，綜合性能極佳，在不同的溫度和放電電流下均有良好的性能表現(xiàn)，適用于需要更高放電電壓和功率密度的場(chǎng)合。
The discharge platform of power-type fluorographite is equal or greater than 2.8V, the specific capacity of power-type fluorographite is more than 700mAh/g and its specific energy is more than 1900Wh/kg. The
combination properties of power-type fluorographite are excellent, which exhibits prominent performance at different temperature and discharge current, it is suitable for the situation requiring higher discharge voltage and higher power density.
倍率型氟化石墨由能量型氟化碳材料改性而來(lái)，大幅提升了導(dǎo)電性，可實(shí)現(xiàn)高倍率放電。在5C倍率下放電平臺(tái)≥2V，相比0.1C比容量保持率≥70%，適用于對(duì)放電電壓無(wú)特殊要求，但需要大電流放電的場(chǎng)合。
The high discharge rate-type fluorographite is modified by the energy-type fluorographite, the modification greatly improves the conductivity, as a result it can discharge at the high rate. The discharge platform of high discharge rate-type fluorographite is equal or greater than 2V at the discharge rate of 5C, comparing with 0.1C rate the capacity retention ratio is equal or greater than 70%. It is suitable for the occasions without special requirement for discharge voltage but requiring high current discharge.
