發(fā)布時(shí)間：2018-03-15 13:06

  本文選題：有機(jī)硅　切入點(diǎn)：離子塑晶　出處：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2016年02期 　論文類(lèi)型：期刊論文

【摘要】：目的:合成新型的有機(jī)硅基離子塑晶材料[DTMA][TFSI],測(cè)試材料的物理和電化學(xué)性能,研究其摻雜改性并作為固態(tài)電解質(zhì)用于鋰離子電池。創(chuàng)新點(diǎn):1.合成新型的有機(jī)硅基離子型塑晶材料;2.將三元復(fù)合塑晶材料作為固態(tài)電解質(zhì)在室溫下用于鋰離子電池。方法:1.通過(guò)熱性能分析,得到材料的塑晶溫度區(qū)間和融化熵值(圖1和表1);2.通過(guò)電導(dǎo)率測(cè)試,確定塑晶摻雜對(duì)導(dǎo)電性能的影響(圖2);3.通過(guò)對(duì)扣式電池的充放電性能、倍率性能、循環(huán)性能以及阻抗的測(cè)試(圖4~7),得到塑晶復(fù)合物作為固態(tài)電解質(zhì)的電化學(xué)性能以及電池循環(huán)的穩(wěn)定性和可逆性。結(jié)論:1.合成新型有機(jī)硅基離子塑晶材料[DTMA][TFSI],塑晶溫度區(qū)間為 26°C到54°C;2.在純塑晶IPC中添加10% LiODFB和10%PC,得到復(fù)合物的電導(dǎo)率為1×10~(-4) S/cm,提高塑晶作為固態(tài)電解質(zhì)在室溫下應(yīng)用的可行性;3.將復(fù)合物用于LiFePO_4/Li半電池測(cè)試,在C/20倍率下,電池的放電比容量為144 mA·h/g,庫(kù)倫效率為99%。在50次循環(huán)后,容量保持率為94%;4.測(cè)試結(jié)果表明,新型有機(jī)硅基離子塑晶的復(fù)合物可作為固態(tài)電解質(zhì)材料應(yīng)用于鋰離子電池,以及更高能量密度的鋰-硫和鋰-空電池。
[Abstract]:Objective: to synthesize new organosilicon-based ionic plasticized material [DTMA] [TFSI], and to test the physical and electrochemical properties of the material. The doping modification was studied and used as solid electrolyte for lithium-ion batteries. Innovation point 1. Synthesis of novel organosilicon-based ionic plastic-crystalline materials. The ternary composite plastic-crystalline materials were used as solid electrolytes for lithium ion electrolysis at room temperature. Method 1. Through thermal performance analysis, The temperature range and melting entropy of the material were obtained (Fig. 1 and Table 1). The effect of doping on conductivity was determined by electrical conductivity test (fig. 2 / 3). The electrochemical performance of plastic-crystalline composite as solid electrolyte and the stability and reversibility of battery cycle were obtained. Conclusion: 1. Synthesis of new organosilicon-based ionic plasticized material [DTMA] [TFSI], plastic crystal temperature. The electrical conductivity of the composite was 1 脳 10 ~ (-4) S / cm, which improved the feasibility of using the composite as a solid electrolyte at room temperature. The composite was used in the LiFePO_4/Li semi-battery test. At C / 20, the specific discharge capacity of the battery is 144 Ma 路h / g, and the Coulomb efficiency is 990.After 50 cycles, the capacity retention rate is 940.The test results show that the new organosilicon-based plastic-crystal composite can be used as a solid electrolyte material for lithium ion batteries. And higher energy density lithium-sulfur and lithium-air batteries.
【作者單位】： Key
【基金】：supported by the Special Support Program of Guangdong Province for High-level Talents(No.2014TX01N014) the Guangdong Provincial for Science&Technology(Nos.2013B091300017 and 2014A050503050) the Guangzhou Municipal for Science&Technology(No.201423/2014Y2-00219) the Dongguan Municipal Collaboration for Industry&Science(No.2013509104210),China
【分類(lèi)號(hào)】：TM912;TB34

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本文編號(hào)：1616157