CN103579637B - 一种复合导电透气疏水催化剂载体的制备方法 - Google Patents
一种复合导电透气疏水催化剂载体的制备方法 Download PDFInfo
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Abstract
本发明提供了一种复合导电透气疏水催化剂载体的制备方法,包括以下步骤:a、按质量比,选取35~60份有机高分子树脂、5~8份高比表面积化合物、5~10份盐分别倒入3~5份增稠剂中,加热至75℃~80℃,在转速2000rpm~2500rpm下搅拌一小时,然后将转速降至800rpm加入20~30份金属粉、7~10份有机导电材料,再将转速调整至2000rpm~2500rpm,温度保持在75℃~85℃下搅拌八小时;b、将步骤a中得到的物料在温度为100~120℃下保温5分钟后固化即可。本发明的催化剂载体将空气电极的防水、透气、导电集于一体,工艺简单、质量稳定性高、使用寿命长。
Description
技术领域
本发明属于电化学技术和电池制造技术领域,特别涉及一种金属空气电极的材料的制备方法。
背景技术
空气电池具有电化学当量高、成本低、安全、无污染等优点,应用前景广阔。影响空点电池进行工业化生产的关键技术是空气电极的制备问题。
空气电极的电化学反应发生在气、液、固三相界面上,即反应必须在活性剂(氧气)、电解质和催化剂之间同时形成的三个界面上。制备空气电极的关键要使空气中的氧气连续不断的通过防水透气层进入三相界面。因此气体扩散的难易是造成空气电极极化大的关键因素。而氧气扩散的难易与防水透气膜密切相关,它取决于透气层的空滤,孔长及曲折度,即取决于透气层的物料配比和工艺条件。
当前制备空气电极分为催化层、集流层、防水透气层及镍网在高温下合压起来。该方法制备工艺繁琐、每层的厚度很难控制导致最终批次产品电性效果差异大。
发明内容
本发明的目的是提供一种复合导电透气疏水催化剂载体的制备方法,能够立体的担载催化剂,促使反应在立体的固、液、气三相界面上。
为实现上述目的,本发明采用以下技术方案:
一种复合导电透气疏水催化剂载体的制备方法,其特征在于:包括以下步骤:
a、按质量比,选取35~60份有机高分子树脂、5~8份高比表面积化合物、5~10份盐分别倒入3~5份增稠剂中,加热至75℃~80℃,在转速2000rpm~2500rpm下搅拌一小时,然后将转速降至800rpm加入20~30份金属粉、7~10份有机导电材料,再将转速调整至2000rpm~2500rpm,温度保持在75℃~85℃下搅拌八小时;
b、将步骤a中得到的物料在温度为100~120℃下保温5分钟后固化即可得到复合导电透气疏水催化剂载体。
所述有机高分子树脂为环氧双酚A、环氧双酚F、酚醛树脂、聚氨酯树脂、聚偏氟乙烯、聚四氟乙烯中的一种或多种。
所述有机导电材料为聚吡咯、聚噻吩中的一种。
所述高表面积化合物为乙炔黑、石墨烯、二氧化硅中的一种。
所述金属粉为铜粉、铁粉、镍粉中的一种。
所述增稠剂为羧甲基纤维素、田菁胶、淀粉磷酸酯钠、羟丙基淀粉中的一种。
所述盐为元明粉、氯化钠中的一种。
本发明的有益效果是:
本发明的催化剂载体将空气电极的防水、透气、导电集于一体,工艺简单、质量稳定性高、使用寿命长;是一种能够立体的担载催化剂,促使反应在立体的固、液、气三相界面上,为催化化学提供新型的防水、透气、导电的担载材料。本发明的工艺简单,多批次生产证明产品质量稳定,且导电性能好;立体担载催化剂量高,单位面积产能比高。
附图说明
图1是由本发明的方法制备的复合导电透气疏水催化剂载体制备的单层空气电极的结构图。
具体实施方式
下面结合具体实施例对本发明做进一步说明。
实施例
1
步骤1、按质量比,选取35份环氧双酚A、6份乙炔黑、10份元明粉分别倒入4份羧甲基纤维素中,加热至75℃,在转速2000rpm下搅拌一小时,然后将转速降至800rpm加入30份铜粉、9份聚吡咯,再将转速调整至2000rpm,温度保持在80℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为120℃下保温5分钟后固化即可。
实施例
2
步骤1、按质量比,选取45份环氧双酚F、5份石墨烯、7份氯化钠分别倒入3份田菁胶中,加热至78℃,在转速2500rpm下搅拌一小时,然后将转速降至800rpm加入20份铁粉、7份聚噻吩,再将转速调整至2500rpm,温度保持在75℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为110℃下保温5分钟后固化即可。
实施例
3
步骤1、按质量比,选取60份酚醛树脂、8份二氧化硅、5份氯化钠分别倒入5份淀粉磷酸酯钠中,加热至80℃,在转速2200rpm下搅拌一小时,然后将转速降至800rpm加入25份镍粉、10份聚噻吩,再将转速调整至2200rpm,温度保持在85℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为100℃下保温5分钟后固化即可。
实施例
4
步骤1、按质量比,选取50份聚偏氟乙烯、6份石墨烯、5份元明粉分别倒入5份羟丙基淀粉中,加热至80℃,在转速2300rpm下搅拌一小时,然后将转速降至800rpm加入20份镍粉、8份聚吡咯,再将转速调整至2300rpm,温度保持在80℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为100℃下保温5分钟后固化即可。
实施例
5
步骤1、按质量比,选取60份聚氨酯树脂、5份乙炔黑、8份氯化钠分别倒入3份羧甲基纤维素中,加热至75℃,在转速2500rpm下搅拌一小时,然后将转速降至800rpm加入30份铁粉、7份聚吡咯,再将转速调整至2500rpm,温度保持在85℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为120℃下保温5分钟后固化即可。
实施例
6
步骤1、按质量比,选取40份聚四氟乙烯、6份石墨烯、5份元明粉分别倒入4份田菁胶中,加热至77℃,在转速2000rpm下搅拌一小时,然后将转速降至800rpm加入25份铁粉、10份聚吡咯,再将转速调整至2000rpm,温度保持在75℃下搅拌八小时;
步骤2、将步骤1中得到的物料在温度为110℃下保温5分钟后固化即可。
实施例
7
将实施例1的步骤1中的环氧双酚A替换为环氧双酚A、环氧双酚F的混合物,其它不变。
实施例
8
将实施例2的步骤1中的环氧双酚F替换为酚醛树脂、聚氨酯树脂、聚偏氟乙烯的混合物,其它不变。
如图1所示,1为载体担载着催化剂,2为镍网,通过本发明的复合导电透气疏水催化剂载体担载着催化剂,符合形成立体的固、液、气三相界面,担载着催化剂引发电化学反应,并直接将产生的电流引至镍网。
部分实施例的产品的质量的检验结果如表1、2所示,
表1
检测项目 | 电阻Ω/cm | 厚度mm | 电流密度mA/cm2 |
实施例1 | 8.1 | 0.71 | 126.2 |
实施例2 | 8.1 | 0.73 | 126.3 |
实施例3 | 8.1 | 0.70 | 126.2 |
实施例4 | 8.1 | 0.71 | 126.2 |
实施例5 | 8.1 | 0.71 | 126.2 |
表2
检测项目 | 电流/A(恒压0.8V) | 功率/W | 单位功率W/cm2 |
实施例1 | 10.1 | 8.1 | 0.1 |
实施例2 | 10.3 | 8.2 | 0.1 |
实施例3 | 10.1 | 8.1 | 0.1 |
实施例4 | 10.1 | 8.1 | 0.1 |
实施例5 | 10.1 | 8.1 | 0.1 |
从上表可以看出,本发明的产品具有质量稳定、导电性能好;立体担载催化剂量高,单位面积产能比高的优点。
Claims (3)
1.一种复合导电透气疏水催化剂载体的制备方法,其特征在于:包括以下步骤:
a、按质量比,选取35~60份有机高分子树脂,5~8份乙炔黑、石墨烯、二氧化硅中的一种、5~10份盐分别倒入3~5份增稠剂中,加热至75℃~80℃,在转速2000rpm~2500rpm下搅拌一小时,然后将转速降至800rpm加入20~30份金属粉、7~10份有机导电材料,再将转速调整至2000rpm~2500rpm,温度保持在75℃~85℃下搅拌八小时;
b、将步骤a中得到的物料在温度为100~120℃下保温5分钟后固化即可得到复合导电透气疏水催化剂载体;
步骤a中,所述有机高分子树脂为环氧双酚A、环氧双酚F、酚醛树脂、聚氨酯树脂、聚偏氟乙烯、聚四氟乙烯中的一种或多种;
步骤a中,所述金属粉为铜粉、铁粉、镍粉中的一种;
步骤a中,所述盐为元明粉、氯化钠中的一种。
2.如权利要求1所述的复合导电透气疏水催化剂载体的制备方法,其特征在于:所述有机导电材料为聚吡咯、聚噻吩中的一种。
3.如权利要求1所述的复合导电透气疏水催化剂载体的制备方法,其特征在于:所述增稠剂为羧甲基纤维素、田菁胶、淀粉磷酸酯钠、羟丙基淀粉中的一种。
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