CN108539200A - 一种纳米聚噻吩电池添加剂及其制备方法 - Google Patents
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Abstract
本发明公开了一种纳米聚噻吩电池添加剂,它是由下述重量份的原料组成的:纳米二氧化硅4‑7、噻吩100‑140、六水三氯化铁3‑5、季戊四醇2‑4、甲基丙烯酸甲酯16‑20、环氧丙醇7‑9、催化剂0.01‑0.02、硬脂酸2‑3,本发明采用硬脂酸处理纳米二氧化硅,与季戊四醇共混,高温酯化,在酯化的过程中引入改性的聚噻吩,有效的提高了二氧化硅在聚噻吩间的分散相容性,从而提高了成品材料的力学稳定性和导电稳定性。
Description
技术领域
本发明属于导电材料领域,具体涉及一种纳米聚噻吩电池添加剂及其制备方法。
背景技术
导电添加剂是电池不可缺少的关键材料之一,特别是在动力型锂离子电池的大电流充放电过程中具有十分重要的作用。不同导电剂都有各自的特点,形态也是各有千秋;
聚噻吩因其良好的光学、电学和环境稳定性,受到科研工作者的重视。其与无机纳米材料复合形成有机无机纳米复合材料,不仅由于无机物的引入改善其原有性能,而且因纳米效应及聚噻吩与无机物之间的协同作用,使得复合材料的性能优于单一组分性能的简单加和;
因此,本发明的目的是将聚噻吩用于导电添加剂领域,同时采用纳米二氧化硅提高其力学稳定性。
发明内容
本发明的目的在于针对现有技术的缺陷和不足,提供一种纳米聚噻吩电池添加剂及其制备方法。
为实现上述目的,本发明采用以下技术方案:
一种纳米聚噻吩电池添加剂,它是由下述重量份的原料组成的:
纳米二氧化硅4-7、噻吩100-140、六水三氯化铁3-5、季戊四醇2-4、甲基丙烯酸甲酯16-20、环氧丙醇7-9、催化剂0.01-0.02、硬脂酸2-3。
所述的催化剂为甲醇钠。
一种纳米聚噻吩电池添加剂的制备方法,包括以下步骤:
(1)取六水三氯化铁,加入到其重量20-30倍的去离子水中,搅拌均匀,得氧化剂溶液;
(2)取纳米二氧化硅、硬脂酸混合,在55-60℃下保温搅拌1-2小时,加入到混合料重量7-10倍的去离子水中,搅拌均匀,得二氧化硅分散液;
(3)取甲基丙烯酸甲酯、噻吩混合,加入到混合料重量10-17倍的去离子水中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为10-15℃,加入上述氧化剂溶液,搅拌反应3-4小时,出料冷却,得聚噻吩溶液;
(4)取环氧丙醇,加入到上述聚噻吩溶液中,搅拌均匀,升高温度为120-135℃,加入上述催化剂,保温搅拌2-3小时,出料冷却,得改性聚噻吩;
(5)取上述二氧化硅分散液,与改性聚噻吩共混,加入季戊四醇,在90-95℃下保温搅拌100-110分钟,抽滤,将滤饼水洗,常温干燥,即得所述纳米聚噻吩电池添加剂。
本发明的优点:
本发明采用甲基丙烯酸甲酯处理噻吩单体,在氧化剂作用下聚合,将得到的聚噻吩溶液与环氧丙醇共混,以甲醇钠为催化剂,得到环氧改性聚噻吩,本发明采用硬脂酸处理纳米二氧化硅,与季戊四醇共混,高温酯化,在酯化的过程中引入改性的聚噻吩,有效的提高了二氧化硅在聚噻吩间的分散相容性,从而提高了成品材料的力学稳定性和导电稳定性。
具体实施方式
实施例1
一种纳米聚噻吩电池添加剂,它是由下述重量份的原料组成的:
纳米二氧化硅4、噻吩100、六水三氯化铁3、季戊四醇2、甲基丙烯酸甲酯16、环氧丙醇7、催化剂0.01、硬脂酸2。
所述的催化剂为甲醇钠。
一种纳米聚噻吩电池添加剂的制备方法,包括以下步骤:
(1)取六水三氯化铁,加入到其重量20倍的去离子水中,搅拌均匀,得氧化剂溶液;
(2)取纳米二氧化硅、硬脂酸混合,在55℃下保温搅拌1小时,加入到混合料重量7倍的去离子水中,搅拌均匀,得二氧化硅分散液;
(3)取甲基丙烯酸甲酯、噻吩混合,加入到混合料重量10倍的去离子水中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为10℃,加入上述氧化剂溶液,搅拌反应3小时,出料冷却,得聚噻吩溶液;
(4)取环氧丙醇,加入到上述聚噻吩溶液中,搅拌均匀,升高温度为120℃,加入上述催化剂,保温搅拌2小时,出料冷却,得改性聚噻吩;
(5)取上述二氧化硅分散液,与改性聚噻吩共混,加入季戊四醇,在90℃下保温搅拌100分钟,抽滤,将滤饼水洗,常温干燥,即得所述纳米聚噻吩电池添加剂。
实施例2
一种纳米聚噻吩电池添加剂,它是由下述重量份的原料组成的:
纳米二氧化硅7、噻吩140、六水三氯化铁5、季戊四醇4、甲基丙烯酸甲酯20、环氧丙醇9、催化剂0.02、硬脂酸3。
所述的催化剂为甲醇钠。
一种纳米聚噻吩电池添加剂的制备方法,包括以下步骤:
(1)取六水三氯化铁,加入到其重量30倍的去离子水中,搅拌均匀,得氧化剂溶液;
(2)取纳米二氧化硅、硬脂酸混合,在60℃下保温搅拌2小时,加入到混合料重量10倍的去离子水中,搅拌均匀,得二氧化硅分散液;
(3)取甲基丙烯酸甲酯、噻吩混合,加入到混合料重量17倍的去离子水中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为15℃,加入上述氧化剂溶液,搅拌反应4小时,出料冷却,得聚噻吩溶液;
(4)取环氧丙醇,加入到上述聚噻吩溶液中,搅拌均匀,升高温度为135℃,加入上述催化剂,保温搅拌3小时,出料冷却,得改性聚噻吩;
(5)取上述二氧化硅分散液,与改性聚噻吩共混,加入季戊四醇,在95℃下保温搅拌110分钟,抽滤,将滤饼水洗,常温干燥,即得所述纳米聚噻吩电池添加剂。
性能测试:
本发明纳米聚噻吩电池添加剂的电导率为0.14-0.20S/cm、拉伸强度为28.3-30.1Mpa。
Claims (3)
1.一种纳米聚噻吩电池添加剂,其特征在于,它是由下述重量份的原料组成的:
纳米二氧化硅4-7、噻吩100-140、六水三氯化铁3-5、季戊四醇2-4、甲基丙烯酸甲酯16-20、环氧丙醇7-9、催化剂0.01-0.02、硬脂酸2-3。
2.根据权利要求1所述的一种纳米聚噻吩电池添加剂,其特征在于,所述的催化剂为甲醇钠。
3.一种如权利要求1所述纳米聚噻吩电池添加剂的制备方法,其特征在于,包括以下步骤:
(1)取六水三氯化铁,加入到其重量20-30倍的去离子水中,搅拌均匀,得氧化剂溶液;
(2)取纳米二氧化硅、硬脂酸混合,在55-60℃下保温搅拌1-2小时,加入到混合料重量7-10倍的去离子水中,搅拌均匀,得二氧化硅分散液;
(3)取甲基丙烯酸甲酯、噻吩混合,加入到混合料重量10-17倍的去离子水中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为10-15℃,加入上述氧化剂溶液,搅拌反应3-4小时,出料冷却,得聚噻吩溶液;
(4)取环氧丙醇,加入到上述聚噻吩溶液中,搅拌均匀,升高温度为120-135℃,加入上述催化剂,保温搅拌2-3小时,出料冷却,得改性聚噻吩;
(5)取上述二氧化硅分散液,与改性聚噻吩共混,加入季戊四醇,在90-95℃下保温搅拌100-110分钟,抽滤,将滤饼水洗,常温干燥,即得所述纳米聚噻吩电池添加剂。
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