SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (4): 529-534.DOI: 10.1016/j.cjche.2016.01.001

• 第25届中国过程控制会议专栏 • 上一篇    下一篇

Evaluation of substrates for zinc negative electrode in acid PbO2-Zn single flow batteries

Junli Pan1,2, Yuehua Wen2, Jie Cheng2, Junqing Pan1, Shouli Bai1, Yusheng Yang1,2   

  1. 1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2 Research Institute of Chemical Defence, Beijing 100191, China
  • 收稿日期:2015-03-24 修回日期:2015-12-14 出版日期:2016-04-28 发布日期:2016-05-27
  • 通讯作者: Yuehua Wen, Junqing Pan
  • 基金资助:

    Supported by the National Basic Research Program (973 Program) of China (2010CB227201), the State Key Program of National Natural Science of China (21236003), the National Natural Science Foundation of China (21476022), the Fundamental Research Funds for the Central Universities (JD1515 and YS1406), Beijing Higher Education Young Elite Teacher Project (YETP0509).

Evaluation of substrates for zinc negative electrode in acid PbO2-Zn single flow batteries

Junli Pan1,2, Yuehua Wen2, Jie Cheng2, Junqing Pan1, Shouli Bai1, Yusheng Yang1,2   

  1. 1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2 Research Institute of Chemical Defence, Beijing 100191, China
  • Received:2015-03-24 Revised:2015-12-14 Online:2016-04-28 Published:2016-05-27
  • Contact: Yuehua Wen, Junqing Pan
  • Supported by:

    Supported by the National Basic Research Program (973 Program) of China (2010CB227201), the State Key Program of National Natural Science of China (21236003), the National Natural Science Foundation of China (21476022), the Fundamental Research Funds for the Central Universities (JD1515 and YS1406), Beijing Higher Education Young Elite Teacher Project (YETP0509).

摘要: An investigationwas performed on the suitability of carbonmaterials,metallic lead and its alloys as substrates for zinc negative electrode in acid PbO2-Zn single flow batteries. The zinc deposition process was carried out in the medium of 1 mol·L-1 H2SO4 at room temperature. No maximum current appears on the potentiostatic current transients for the zinc deposition on lead and its alloys.With increasing overpotential, the progressive nucleation turns to be a 3D-instantaneous nucleation process for the resin-graphite composite. Hydrogen evolution on the graphite composite is effectively suppressedwith the doping of a polymer resin. The hydrogen evolution reaction on the lead is relatively weak, while on the lead alloys, it becomes serious to a certain degree. Although the exchange current density of zinc deposition and dissolution process on the graphite composite is relatively low, the zinc corrosion is weakened to a great extent. With the increase of deposition time, zinc deposits are more compact. The cyclings of zinc galvanostatic charge-discharge on the graphite composite provide more than 90% of coulombic and 80% of energy efficiencies, and exhibit superior cycling stability during the first 10 cycles.

关键词: Acid single flow battery, Zinc negative electrode, Electro-deposition, Substrate

Abstract: An investigationwas performed on the suitability of carbonmaterials,metallic lead and its alloys as substrates for zinc negative electrode in acid PbO2-Zn single flow batteries. The zinc deposition process was carried out in the medium of 1 mol·L-1 H2SO4 at room temperature. No maximum current appears on the potentiostatic current transients for the zinc deposition on lead and its alloys.With increasing overpotential, the progressive nucleation turns to be a 3D-instantaneous nucleation process for the resin-graphite composite. Hydrogen evolution on the graphite composite is effectively suppressedwith the doping of a polymer resin. The hydrogen evolution reaction on the lead is relatively weak, while on the lead alloys, it becomes serious to a certain degree. Although the exchange current density of zinc deposition and dissolution process on the graphite composite is relatively low, the zinc corrosion is weakened to a great extent. With the increase of deposition time, zinc deposits are more compact. The cyclings of zinc galvanostatic charge-discharge on the graphite composite provide more than 90% of coulombic and 80% of energy efficiencies, and exhibit superior cycling stability during the first 10 cycles.

Key words: Acid single flow battery, Zinc negative electrode, Electro-deposition, Substrate