CN101202347A - 具有金属骨架正极的1.5v锂二硫化铁扣式电池 - Google Patents
具有金属骨架正极的1.5v锂二硫化铁扣式电池 Download PDFInfo
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Abstract
本发明公开一种具有金属骨架正极的1.5V锂二硫化铁扣式电池。该该扣式电池包括两半式的金属壳体,壳体内设置隔膜和填充电解液,隔膜的两侧分别设置正极和负极,所述的隔膜为具有微孔的聚丙烯、聚乙烯薄膜,或者两者结合的复合薄膜,或为聚丙烯毡,或为纤维的纸质薄膜,或为玻璃纤维隔膜。所述的正极由集流体和填充在其中的正极材料组成,金属骨架包括发泡镍、纤维镍、发泡铁、发泡铜、发泡铝、发泡钛或者烧结不锈钢,正极材料由二硫化铁、导电剂、粘接剂组成;所述的负极为金属锂、锂铝合金或锂硅合金,所述的电解液为锂盐溶解在有机物溶液中制成。本发明的优点在于,能够抑制电池放电过程中出现的膨胀问题。而且,制备工艺简单,适合大规模的工业化生产。
Description
技术领域
本发明公开了一种具有金属骨架正极的1.5V锂二硫化铁扣式电池,属于化学储能技术的创新。
背景技术
近些年来,随着电子技术的发展和世界对环境保护的日益重视,对化学电源提出了更高的要求。目前市场主流的1.5V扣式电池分为两个系列,一个系列是锌锰扣式电池,这种电池的优点是价格便宜,缺点是容量低、自放电大、容易漏液,高低温性能不好。另一个系列为银锌扣式电池,这种电池的容量虽然比锌锰高出30%以上,但由于其正极采用氧化银制成,价格昂贵。银锌扣式电与锌锰扣式电池一般含有汞。由于扣式电池广泛的应用在手表、波鞋、计算器、仪表等各种用电器中,当这些电子产品被抛弃变成固体垃圾时,容易造成对环境的污染。
锂二硫化铁扣式电池正极活性物质为二硫化铁,负极采用金属锂或者锂合金,工作电压1.5V,放电容量比同样型号的银锌电池高,对环境无污染。但是,以前的锂二硫化铁扣式电池在放电过程中存在膨胀问题,影响了电池的使用性能。具有发泡金属正极的1.5V锂二硫化铁扣式电池解决了电池放电过程中膨胀问题,提高了电池的品质。
发明内容
本发明的目的在于提供一种具有金属骨架正极的1.5V锂二硫化铁扣式电池,该电池具有放电能力稳定,在放电过程中不膨胀,而且对环境无污染的特点。
本发明是通过以下技术方案加以实现的,一种具有金属骨架正极的1.5V锂二硫化铁扣式电池,该扣式电池包括两半式的金属壳体,壳体内设置隔膜和填充电解液,隔膜的两侧分别设置正极和负极,所述的隔膜为具有微孔的聚丙烯(PP)薄膜,或具有微孔的聚乙烯(PE)薄膜,或者两者结合而成的复合薄膜,或为聚丙烯毡,或为纤维的纸质薄膜,或为玻璃纤维,所述的正极由集流体和填充在其中的正极材料组成,正极材料由二硫化铁和选自石墨、炭黑、铁粉、铜粉、银粉、镍粉的一种或多种的导电剂,及选自聚乙烯、聚四氟乙烯、聚氧化乙烯、丙烯酸酯、羧甲基纤维素的一种或多种的粘接剂组成,所述的负极为金属锂、锂铝合金或锂硅合金,所述的电解液为LiPF6、LiClO4、双乙二酸硼酸锂(LiBOB)、LiBF4、LiI或LiCl溶解在碳酸乙烯酯(EC)、碳酸丙烯酯(PC)、碳酸二乙酯(DEC)、碳酸二甲酯(DMC)、乙二醇二甲醚(DME)、乙腈(AN)、碳酸甲乙酯(EMC)或γ-丁内酯(GBL)的一种溶液或者多种混合溶液。
其特征在于,集流体为金属骨架,金属骨架选自发泡镍、纤维镍、发泡铁、发泡铜、发泡铝、发泡钛或者烧结不锈钢。
本发明的优点在于,扣式电池的正极山使用发泡金属或者烧结不锈钢它们都属于多孔金属作为骨架,骨架中填充二硫化铁、导电剂、粘接剂组成的正极材料,构成正极。能够抑制电池放电过程中出现的膨胀问题,从而增强了电池的放电电压的稳定性,增加了电池的放电容量,提升了电池的总体品质,有利于扩大锂铁扣式电池的应用范围,增强了锂铁扣式电池在高端电子仪器、仪表上应用的竞争力。而且,有利于简化电池的生产工艺,适合大规模的工业化生产。
具体实施方式:
实施例1
将二硫化铁粉末50g和石墨粉50g均匀混合,然后加入质量浓度为20%聚氧化乙烯水溶液100g,用玻璃棒搅拌成为浆状,再把浆体涂抹在10cm×10cm×2mm的孔率为83%的发泡镍上,用牛角勺反复的涂抹,使浆体充分的填充到发泡镍的间隙中,然后把发泡镍放入150℃,1KPa的真空烘箱中,烘干12h,取出,用压片机将发泡镍压至1mm厚,然后切成一个φ2.2mm的圆饼,在放入150℃,1KPa的真空烘箱中,烘干12h,转移到相对湿度≤1%的干燥环境中,作为正极待用。把φ2.2mm,厚度为0.5mm锂饼放入不锈钢壳体,上面放好玻璃纤维隔膜,再把正极放在隔膜上面,加入0.5g 1MLiCiO4在1∶3 PC和DME的电解液,盖好另一半不锈钢壳体,然后在油压机上封口,得到扣式电池。
实施例2
将天然二硫化铁粉末80g和石墨粉20g均匀混合,然后加入质量浓度为15%丙烯酸酯水溶液100g,用玻璃棒搅拌成为浆状,再把浆体涂抹在10cm×10cm×2mm的孔率为45%的发泡铜上,用牛角勺反复的涂抹,使浆体充分的填充到发泡铜的间隙中,然后把发泡铜放入150℃真空烘箱中,烘干12h,取出,用压片机发泡铜压至1mm厚,然后切成一个φ6.2mm的圆饼,再放入150℃真空烘箱中,烘干12h,转移到相对湿度≤1%的干燥环境中,作为正极待用。把φ6.2mm,厚度0.8mm锂铝合金饼(Li:98%wt,Al:2%wt)放入不锈钢壳体,上面放好玻璃纤维隔膜,在把正极放在隔膜上面,加入3.5g 1M LiI在1∶3∶6的PC、DME和DOL的电解液,盖好另一半不锈钢壳体,然后在油压机上封口,制成扣式电池。
实施例3
将人工合成二硫化铁粉末70g和铜粉30g均匀混合,然后加入质量浓度为5%聚四氟乙烯乳液100g,用玻璃棒搅拌成为浆状,再把浆体涂抹在10cm×10cm×2mm的烧结不锈钢上,用牛角勺反复的涂抹,使浆体充分的填充到孔率为60%的烧结不锈钢的间隙中,然后把烧结不锈钢放入150℃真空烘箱中,烘干12h,取出,用压片机将烧结不锈钢压至1mm厚,然后切成一个φ8.2mm的圆饼,再放入150℃真空烘箱中,烘干12h,转移到相对湿度≤1%的干燥环境中,作为正极待用。把φ8.0mm,厚度为1mm锂铝合金饼(Li:98%wt,Al:2%wt)放入镀镍铁壳体,上面放好玻璃纤维隔膜,在把正极放在隔膜上面,加入4.4g0.8MLiBOB在1∶1∶5∶3 PC、EC、DEC和GBL的电解液,盖好另一半镀镍铁壳体,然后在油压机上封口,制成扣式电池。
实施例4
将人工合成二硫化铁粉末90g和镍粉10g均匀混合,然后加入质量浓度为5%聚乙烯的乙醇溶液100g,用玻璃棒搅拌成为膏状,再把膏体涂抹在10cm×10cm×2mm的孔率为95%发泡钛上,用牛角勺反复的涂抹,使膏体充分的填充到发泡钛的间隙中,然后把发泡钛放入150℃真空烘箱中,烘干12h,取出,用压片机将发泡钛压至1mm厚,然后切成一个φ2.2mm,的圆饼,再放入150℃真空烘箱中,烘干12h,转移到相对湿度≤1%的干燥环境中,作为正极待用。把φ2.2mm,厚度0.7mm锂饼放入镀镍铁壳体,上面放好玻璃纤维隔膜,在把正极放在隔膜上面,加入0.4g 1.2M LiPF6在1∶1∶4∶1的PC、EC、DEC和GBL的电解液,盖好镀镍铁壳体,然后在油压机上封口,制成扣式电池。
Claims (1)
1.一种具有金属骨架正极的1.5V锂二硫化铁扣式电池,该扣式电池包括两半式的金属壳体,壳体内设置隔膜和填充电解液,隔膜的两侧分别设置正极和负极,所述的隔膜为具有微孔的聚丙烯薄膜,或具有微孔的聚乙烯薄膜,或者两者结合而成的复合薄膜,或为聚丙烯毡,或为纤维的纸质薄膜,或为玻璃纤维,所属的正极由集流体和填充在其中的正极材料组成,正极材料由二硫化铁和选自石墨、炭黑、铁粉、铜粉、银粉、镍粉的一种或多种的导电剂,及选自聚乙烯、聚四氟乙烯、聚氧化乙烯、丙烯酸酯、羧甲基纤维素的一种或多种的粘接剂组成,所述的负极为金属锂、锂铝合金或锂硅合金,所述的电解液为LiPF6、LiClO4、双乙二酸硼酸锂、LiBF4、LiI或LiCl溶解在碳酸乙烯酯、碳酸丙烯酯、碳酸二乙酯、碳酸二甲酯、乙二醇二甲醚、乙腈、碳酸甲乙酯或γ-丁内酯的一种溶液或者多种混合溶液,其特征在于,集流体为金属骨架,金属骨架选自发泡镍、纤维镍、发泡铁、发泡铜、发泡铝、发泡钛或者烧结不锈钢。
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CNA2007101502861A CN101202347A (zh) | 2007-11-22 | 2007-11-22 | 具有金属骨架正极的1.5v锂二硫化铁扣式电池 |
PCT/CN2008/000243 WO2009065282A1 (en) | 2007-11-22 | 2008-01-31 | 1.5v li-fes2 button type cell with metal skeleton |
US12/918,429 US20110027643A1 (en) | 2007-11-22 | 2008-01-31 | Button Type Cell Battery with Metallic Framework |
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US5486431A (en) * | 1994-03-02 | 1996-01-23 | Micron Communications, Inc. | Method of producing button-type batteries and spring-biased concave button-type battery |
EP0843372B1 (en) * | 1996-11-18 | 2003-03-12 | Japan Storage Battery Company Limited | Positive electrode for lithium battery and lithium battery |
JP3492173B2 (ja) * | 1997-12-09 | 2004-02-03 | シャープ株式会社 | 非水系電池 |
JPH11219730A (ja) * | 1998-02-03 | 1999-08-10 | Fuji Photo Film Co Ltd | 非水電解液二次電池 |
JP3831525B2 (ja) * | 1998-06-30 | 2006-10-11 | 三洋電機株式会社 | 電池 |
KR100378007B1 (ko) * | 2000-11-22 | 2003-03-29 | 삼성에스디아이 주식회사 | 리튬-황 전지용 양극 및 그를 포함하는 리튬-황 전지 |
KR100559364B1 (ko) * | 2003-05-09 | 2006-03-10 | 한국과학기술연구원 | 다공성의 3차원 집전체로 구성된 전극과 이를 이용한리튬전지, 및 그 제조방법 |
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CN100452502C (zh) * | 2006-05-17 | 2009-01-14 | 福建南平南孚電池有限公司 | 非水溶液锂-二硫化铁一次电池 |
-
2007
- 2007-11-22 CN CNA2007101502861A patent/CN101202347A/zh active Pending
-
2008
- 2008-01-31 WO PCT/CN2008/000243 patent/WO2009065282A1/zh active Application Filing
- 2008-01-31 US US12/918,429 patent/US20110027643A1/en not_active Abandoned
Cited By (15)
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CN102812580A (zh) * | 2010-04-16 | 2012-12-05 | 株式会社钢臂功科研 | 负极活性物质、使用了它的二次电池及电容器、以及蓄电设备 |
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CN104701495A (zh) * | 2013-12-05 | 2015-06-10 | 天津赫维科技有限公司 | 扣式电池用锂铝合金负极的制造方法 |
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CN104201381B (zh) * | 2014-09-09 | 2018-09-14 | 西安新竹防灾救生设备有限公司 | 锂系热电池的单元电池及正极材料和正极片的制备方法 |
CN108288690A (zh) * | 2017-01-09 | 2018-07-17 | 溧阳天目先导电池材料科技有限公司 | 一种锂固态电池负极及其制备方法和应用 |
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CN107482185B (zh) * | 2017-07-25 | 2020-01-14 | 东莞市天球实业有限公司 | 一种FeS2复合正极材料的合成方法及电池 |
CN114682866A (zh) * | 2020-12-29 | 2022-07-01 | 富联裕展科技(深圳)有限公司 | 成孔方法、铝合金-不锈钢工件及金属制品 |
CN114682866B (zh) * | 2020-12-29 | 2024-05-03 | 富联裕展科技(深圳)有限公司 | 成孔方法、铝合金-不锈钢工件及金属制品 |
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WO2009065282A1 (en) | 2009-05-28 |
US20110027643A1 (en) | 2011-02-03 |
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