储能科学与技术 ›› 2023, Vol. 12 ›› Issue (11): 3330-3339.doi: 10.19799/j.cnki.2095-4239.2023.0412

• 储能材料与器件 • 上一篇    下一篇

基于三维导电膜的锌镍电池及其在智能门锁上的应用

徐松1,2(), 王明煜2,3, 李亮生2,3, 赵梁栋2,3, 孙子惠1, 张聪慧1, 王子涵1   

  1. 1.郑州航空工业管理学院,河南 郑州 450046
    2.河南超力新能源有限公司,河南 新乡 453002
    3.超威电源集团有限公司,浙江 长兴 313100
  • 收稿日期:2023-06-12 修回日期:2023-08-15 出版日期:2023-11-05 发布日期:2023-11-16
  • 通讯作者: 徐松 E-mail:songxu@zua.edu.cn
  • 作者简介:徐松(1979—),男,博士,主要研究方向为锌基电池技术,E-mail:songxu@zua.edu.cn
  • 基金资助:
    河南省自然科学基金面上项目(222300420576);河南省高等学校重点科研项目(21A530008)

Zinc-nickel battery based on a 3D conductive film and its application in intelligent lock

Song XU1,2(), Mingyu WANG2,3, Liangsheng LI2,3, Liangdong ZHAO2,3, Zihui SUN1, Conghui ZHANG1, Zihan WANG1   

  1. 1.Zhengzhou University of Aeronautics, Zhengzhou 450046, Henan, China
    2.Henan Chaoli New Energy Co. , Ltd. , Xinxiang 453002, Henan, China
    3.Chilwee Power Group Co. , Ltd. , Changxing 313100, Zhejiang, China
  • Received:2023-06-12 Revised:2023-08-15 Online:2023-11-05 Published:2023-11-16
  • Contact: Song XU E-mail:songxu@zua.edu.cn

摘要:

锌镍电池是非常有发展前景的绿色储能技术,然而,由于锌负极形变、枝晶生长、钝化、严重的副反应等问题,影响了锌镍电池的大规模应用。本工作采用氧化还原石墨烯(rGO)、科琴黑(KB)和碳导电膜(CCF),通过喷涂技术制备了具有三维导电网络的CCF@KB-rGO膜,采用该三维导电膜的AA型锌镍电池展现出良好的电化学性能。超支化KB和层状rGO形成三维的导电网络,提高了电子和离子的传导能力,使锌镍电池具有良好的快速充电和低温放电性能,充电80%仅需要43分钟,-20 ℃条件下0.5 C可以放出60%以上额定容量;层状rGO有助于锌负极的均匀沉积,提高了电池的循环稳定性,经过300次循环,锌负极没有发现明显的枝晶;CCF@KB-rGO中高比表面积的KB和rGO可以吸附部分游离的电解液,抑制了锌负极溶解,同时降低了电池的自放电。采用CCF@KB-rGO的AA锌镍电池电化学性能突出,安全性好,各方面的表现均优于一次性干电池,更好地满足了智能门锁对电池性能不断提高的要求。本工作基于三维导电膜的设计有效提高了锌镍电池性能,为锌镍电池的研究提供了新的思路。

关键词: 锌镍电池, 智能门锁, 锌负极, 三维导电膜, 安全性

Abstract:

Zinc-nickel battery (ZNB) is regarded as a prospective green-energy storage technology. However, the large-scale application of ZNB is impeded by the deformation, dendrite growth, passivation, and serious side reactions of the zinc anode. In this study, reduced graphene oxide (rGO), Ketjenblack (KB), and carbon conductive film (CCF) are used to prepare the CCF@KB-rGO film with three-dimensional (3D) conductive network based on the spraying technology. The results show good electrochemical performance by AA ZNBs with CCF@KB-rGO. The hyperbranched KB and layered rGO form a 3D conductive network to enhance electron and ion conduction, thus improving the fast charge and low temperature-discharge performance of ZNB. Furthermore, an 80% capacity charge could be achieved within 43 min, and more than 60% rated capacity is output at 0.5 C at -20 ℃. The layered rGO enables zinc to be deposited uniformly and improves the cycle stability of the zinc anode; no obvious dendrites are found in the zinc anode after 300 cycles. The KB and rGO with high specific-surface area in CCF@KB-rGO can adsorb part of the free electrolytes, thus inhibiting the dissolution of the zinc anode and reducing the self-discharge of the battery. The outstanding electrochemical performance and safety of the AA ZNB with CCF@KB-rGO is far better than that of a disposable dry battery in the application of intelligent locks. Thus, the ever-growing requirements of smart lock are met for battery performance. The design based on the proposed 3D conductive film improves the performance of ZNB effectively, thus providing a new idea for the research of ZNBs.

Key words: zinc-nickel battery, intelligent lock, zinc anode, 3D conductive film, safety

中图分类号: