CN105514348B - 一种锌空气电池用锌电极的制备方法 - Google Patents
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- 239000011701 zinc Substances 0.000 title claims abstract description 28
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000178 monomer Substances 0.000 claims abstract description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 8
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- 238000013019 agitation Methods 0.000 claims abstract description 7
- 239000003365 glass fiber Substances 0.000 claims abstract description 7
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical class C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 claims description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical group C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 9
- 229920000642 polymer Polymers 0.000 abstract description 2
- MLMGJTAJUDSUKA-UHFFFAOYSA-N 2-ethenyl-1h-imidazole Chemical class C=CC1=NC=CN1 MLMGJTAJUDSUKA-UHFFFAOYSA-N 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 15
- 235000014692 zinc oxide Nutrition 0.000 description 7
- 239000011787 zinc oxide Substances 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
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- 239000006071 cream Substances 0.000 description 6
- 229910052864 hemimorphite Inorganic materials 0.000 description 6
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 description 6
- -1 N- vinyl imidazoles chlorate Chemical class 0.000 description 4
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Inorganic materials [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
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- 239000007795 chemical reaction product Substances 0.000 description 1
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Abstract
本发明涉及一种锌空气电池用锌电极的制备方法,包括如下步骤:(a)将N‑乙烯基咪唑鎓盐单体和引发剂溶于乙醇中,进行聚合反应形成聚合溶液;(b)向所述聚合溶液中加入500~1000目的锌粉和碎海绵,在搅拌条件下向其中加入丙酮,静置沉淀,过滤取滤渣;(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的1/2~2/3,平铺放置无碱玻璃纤维丝编织成的编织网,在100~150℃真空干燥10~15小时即可。通过使用N‑乙烯基咪唑鎓盐单体形成的聚合物包裹锌粉和碎海绵,能够改善锌饼对电解液的吸收能力差的问题。
Description
技术领域
本发明能源器件领域,涉及一种锌电极,具体涉及一种锌空气电池用锌电极的制备方法。
背景技术
现有的锌空气电池的负极大多采用锌膏这种物质形态,锌膏呈流体状态,对于作为备用电池使用的电池负极,锌膏不易长时间储存,且机械更换不便,锌膏具有流动性,它要求在放入锌膏之前必须对电池进行封装,这就要求电池碳电极和电池槽框提前封装好,封装这两个部件只能靠胶粘的方式,胶粘不利于材料的回收循环使用,粘结后要求封装紧密不漏液,这对工人的工艺水平有很高要求,不利于工业化流水生产。流体状态的锌膏在电池结构中位置不稳定、易晃动。
为了延长电池的使用寿命和贮存期,出现的新的锌电极由碱性电池用活性锌粉与缓蚀剂、粘结剂按一定质量比混合分散均匀后形成锌粉混合物经干压成型,真空干燥处理后获得“锌饼”,但是这样制成的“锌饼”易碎,且加入电解液后锌饼对电解液的吸收能力差。注入的电解液不能被及时吸收,继续加液电解液溢出,最终导致电池内部电解液加入量不足,反应过程中锌饼易结块,反应后期因电解液不足而反应不彻底,最后导致电池中的锌不能被完全反应,放电效率降低。反应过程中反应产物氧化锌不断堆积影响反应的继续进行。
发明内容
本发明目的是为了克服现有技术的不足而提供一种锌空气电池用锌电极的制备方法。
为达到上述目的,本发明采用的技术方案是:一种锌空气电池用锌电极的制备方法,包括如下步骤:
(a)将N-乙烯基咪唑鎓盐单体和引发剂溶于乙醇中,置于惰性气体保护的反应瓶中进行聚合反应形成聚合溶液;
(b)向所述聚合溶液中加入500~1000目的锌粉和碎海绵,在搅拌条件下向其中加入丙酮,静置沉淀,过滤取滤渣;所述乙醇和所述丙酮的体积比为1∶3~5,所述N-乙烯基咪唑鎓盐单体、锌粉和碎海绵的质量比为5~10∶10~15∶1~3;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的1/2~2/3,平铺放置无碱玻璃纤维丝编织成的编织网,在100~150℃真空干燥10~15小时即可。
优化地,所述引发剂的质量为所述N-乙烯基咪唑鎓盐单体质量的0.5%~1.5%,所述N-乙烯基咪唑鎓盐单体在去离子水中的浓度为2~10mol/L。
优化地,所述步骤(a)中,将N-乙烯基咪唑鎓盐单体、苯乙烯单体和引发剂溶于乙醇,所述N-乙烯基咪唑鎓盐单体和所述苯乙烯单体的质量比为5~20∶1。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:本发明锌空气电池用锌电极的制备方法,通过使用N-乙烯基咪唑鎓盐单体形成的聚合物包裹锌粉和碎海绵,能够改善锌饼对电解液的吸收能力差的问题,能够吸收电解液而防止其溢出,从而避免其结块和因电解液不足而反应不彻底,最终提高放电效率。
具体实施方式
下面将对本发明优选实施方案进行详细说明:
实施例1
本实施例提供一种锌空气电池用锌电极的制备方法,包括如下步骤:
(a)将100kg N-乙烯基咪唑鎓盐单体(N-乙烯基咪唑氯化鎓盐)和0.5kg引发剂(安息香乙醚)溶于乙醇中形成2mol/L的溶液,置于惰性气体保护的反应瓶中于60℃进行聚合反应形成聚合溶液;
(b)向所述聚合溶液中加入500目的200kg锌粉和30kg碎海绵,在搅拌条件下向其中加入过量丙酮(约为乙醇体积的3倍),静置沉淀,过滤取滤渣;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的1/2,平铺放置无碱玻璃纤维丝编织成的编织网,在100℃真空干燥15小时即可。
实施例2
本实施例提供一种锌空气电池用锌电极的制备方法,包括如下步骤:
(a)将100kg N-乙烯基咪唑鎓盐单体(N-乙烯基咪唑氯化鎓盐)和1.5kg引发剂(安息香乙醚)溶于乙醇中形成10mol/L的溶液,置于惰性气体保护的反应瓶中于70℃进行聚合反应形成聚合溶液;
(b)向所述聚合溶液中加入1000目的300kg锌粉和40kg碎海绵,在搅拌条件下向其中加入过量丙酮(约为乙醇体积的5倍),静置沉淀,过滤取滤渣;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的2/3,平铺放置无碱玻璃纤维丝编织成的编织网,在150℃真空干燥10小时即可。
实施例3
本实施例提供一种锌空气电池用锌电极的制备方法,包括如下步骤:
(a)将100kg N-乙烯基咪唑鎓盐单体(N-乙烯基咪唑氯化鎓盐)和1kg引发剂(安息香乙醚)溶于乙醇中形成5mol/L的溶液,置于惰性气体保护的反应瓶中于75℃进行聚合反应形成聚合溶液;
(b)向所述聚合溶液中加入800目的250kg锌粉和20kg碎海绵,在搅拌条件下向其中加入过量丙酮(约为乙醇体积的4倍),静置沉淀,过滤取滤渣;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的60%,平铺放置无碱玻璃纤维丝编织成的编织网,在110℃真空干燥12小时即可。
实施例4
本实施例提供一种锌空气电池用锌电极的制备方法,包括如下步骤:
(a)将100kg N-乙烯基咪唑鎓盐单体(N-乙烯基咪唑氯化鎓盐)、5kg苯乙烯和0.5kg引发剂(安息香乙醚)溶于乙醇中形成2mol/L的溶液,置于惰性气体保护的反应瓶中于60℃进行聚合反应形成聚合溶液;
(b)向所述聚合溶液中加入500目的200kg锌粉和20kg碎海绵,在搅拌条件下向其中加入过量丙酮(约为乙醇体积的3倍),静置沉淀,过滤取滤渣;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的1/2~2/3,平铺放置无碱玻璃纤维丝编织成的编织网,在100℃真空干燥15小时即可。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围,凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。
Claims (3)
1.一种锌空气电池用锌电极的制备方法,其特征在于,包括如下步骤:
(a)将N-乙烯基咪唑鎓盐单体和引发剂溶于乙醇中,置于惰性气体保护的反应瓶中进行聚合反应形成聚合溶液;所述引发剂为安息香乙醚;
(b)向所述聚合溶液中加入500~1000目的锌粉和碎海绵,在搅拌条件下向其中加入丙酮,静置沉淀,过滤取滤渣;所述乙醇和所述丙酮的体积比为1∶3~5,所述N-乙烯基咪唑鎓盐单体、锌粉和碎海绵的质量比为5~10∶10~15∶1~3;
(c)选用一个上端开口的箱体容器,在所述箱体容器底部开设多个沥水孔,并在其底部铺设隔膜纸;
(d)将所述滤渣倾入所述箱体容器中,再向其中加入去离子水至其体积的1/2~2/3,平铺放置无碱玻璃纤维丝编织成的编织网,在100~150℃真空干燥10~15小时即可。
2.根据权利要求1所述的锌空气电池用锌电极的制备方法,其特征在于:所述引发剂的质量为所述N-乙烯基咪唑鎓盐单体质量的0.5%~1.5%,所述N-乙烯基咪唑鎓盐单体在去离子水中的浓度为2~10mol/L。
3.根据权利要求1所述的锌空气电池用锌电极的制备方法,其特征在于:所述步骤(a)中,将N-乙烯基咪唑鎓盐单体、苯乙烯单体和引发剂溶于乙醇,所述N-乙烯基咪唑鎓盐单体和所述苯乙烯单体的质量比为5~20∶1。
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CN104437632A (zh) * | 2014-11-03 | 2015-03-25 | 江苏大学 | 一种大孔酸碱双功能有机固体催化剂及制备方法和应用 |
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