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The effect of adding Bi3+ on the performance of a newly developed iron-copper redox flow battery

机译：添加BI3 +对新开发的铁铜氧化还原电池性能的影响

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摘要

In this paper, we propose a new, abundant, cost-effective, non-toxic, and environmentally benign iron-copper redox flow battery (Fe/Cu RFB), which employs Fe2+/Fe3+ and Cu+/Cu-0 as the positive and negative electrolytes, respectively. The effect of graphite felt (GF) electrode modification and addition of Bi3+ into the electrolytes on the performance of the Fe/Cu RFB were investigated. It was found that the cell containing Bi3+ in the electrolytes revealed higher coulombic efficiency (89.18%) and energy efficiency (35.24%) than the cell without Bi3+ (CE = 84.10% and EE = 34.43%) at 20 mA cm(-2). This is because after adding Bi3+, Cu metal precipitation was not observed on the electrode surface, which indicates that the deposition process was potentially reversible on the electrode material, thus leading to enhanced performance of the battery. Furthermore, the efficiencies of the battery are stable over 10 cycles, which demonstrates that Fe/Cu RFB exhibits good stability on the microwave heat treated GF plus one layer microwave heat treated carbon paper (HT-GF + HT-CP) electrode after adding Bi3+ into the electrolytes.
机译：在本文中，我们提出了一个新的，丰富的，成本有效的，无毒的，并且对环境无害的铁铜氧化还原液流电池（铁/铜RFB），其采用的Fe2 + / Fe3 +的和Cu + / Cu的-0为正和负电解质，分别。石墨毡（GF）电极的修改和添加Bi 3+的成对的Fe / Cu的RFB的性能的电解质的影响进行了研究。结果发现，含有Bi 3+的电解质中的细胞显示更高的库仑效率（89.18％）和能量效率（35.24％）比电池的未在20mA厘米BI3 +（CE = 84.10％和EE = 34.43％）（-2） 。这是因为添加BI3 +后，未在电极表面上，这表明在沉积过程是在电极材料可能是可逆的，从而导致电池的增强性能上观察到的铜金属析出。此外，电池的效率超过10个循环稳定，这表明铁/铜RFB显示出在处理过的GF加一层微波热处理的碳纸（HT-GF + HT-CP）电极的微波热稳定性好添加Bi 3+的后进入电解质。

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  • 来源
    《RSC Advances》 |2018年第16期|共7页
  • 作者

    Kabtamu Daniel Manaye; Lin Guan-Yi; Chang Yu-Chung; Chen Hsueh-Yu; Huang Hsin-Chih; Hsu Ning-Yih; Chou Yi-Sin; Wei Hwa-Jou; Wang Chen-Hao;

  • 作者单位

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

    Atom Energy Council Inst Nucl Energy Res Taoyuan 32546 Taiwan;

    Atom Energy Council Inst Nucl Energy Res Taoyuan 32546 Taiwan;

    Atom Energy Council Inst Nucl Energy Res Taoyuan 32546 Taiwan;

    Natl Taiwan Univ Sci &

    Technol Dept Mat Sci &

    Engn Taipei 10607 Taiwan;

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  • 正文语种 eng
  • 中图分类 化学;
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