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首页> 外文期刊>Advanced energy materials >A Tannic Acid–Derived N-, P-Codoped Carbon-Supported Iron-Based Nanocomposite as an Advanced Trifunctional Electrocatalyst for the Overall Water Splitting Cells and Zinc–Air Batteries
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A Tannic Acid–Derived N-, P-Codoped Carbon-Supported Iron-Based Nanocomposite as an Advanced Trifunctional Electrocatalyst for the Overall Water Splitting Cells and Zinc–Air Batteries

机译：单宁酸衍生的N-，P-掺杂的碳载铁基纳米复合材料，作为高级三功能电催化剂，用于整体水分解电池和锌空气电池

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摘要

Rational design and construction of a multifunctional electrocatalyst featuring with high efficiency and low cost is fundamentally important to realize new energy technologies. Herein, a trifunctional electrocatalyst composed of FePx nanoparticles and Fe-N-C moiety supported on the N-, P-codoped carbon (NPC) is masterly synthesized by a facile one-pot pyrolysis of the mixture of tannic acid, ferrous chloride, and sodium hydrogen phosphate. The synergy of each component in the FePx/Fe-N-C/NPC catalyst renders high catalytic activities and excellent durability toward both oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The electrocatalytic performance and practicability of the robust FePx/Fe-N-C/NPC catalyst are further investigated under the practical operation conditions. Particularly, the overall water splitting cell assembled by the FePx/Fe-N-C/NPC catalyst only requires a voltage of 1.58 V to output the benchmark current density of 10 mA cm(-2), which is superior to that of IrO2-Pt/C-based cell. Moreover, the FePx/Fe-N-C/NPC-based zinc-air batteries deliver high round-trip efficiency and remarkable cycling stability, much better than that of Pt/C-IrO2 pair-based batteries. This work offers a new strategy to design and synthesize highly effective multifunctional electrocatalysts using cheaper tannic acid derived carbon as support applied in electrochemical energy devices.
机译：高效，低成本的多功能电催化剂的合理设计和构建对于实现新能源技术至关重要。在此，通过单宁酸，氯化亚铁和氢钠混合物的轻松一锅热解法，主要合成了由FePx纳米颗粒和负载在N-，P-共掺杂碳（NPC）上的Fe-NC部分组成的三功能电催化剂。磷酸盐。 FePx / Fe-N-C / NPC催化剂中各组分的协同作用使催化剂具有很高的催化活性，并且对氧还原反应（ORR），氧释放反应（OER）和氢释放反应（HER）均具有出色的耐久性。在实际操作条件下，进一步研究了坚固的FePx / Fe-N-C / NPC催化剂的电催化性能和实用性。特别是，由FePx / Fe-NC / NPC催化剂组装的整个水分解池仅需要1.58 V的电压即可输出10 mA cm（-2）的基准电流密度，这优于IrO2-Pt /基于C的单元格。而且，基于FePx / Fe-N-C / NPC的锌-空气电池具有较高的往返效率和出色的循环稳定性，远优于基于Pt / C-IrO2对的电池。这项工作提供了一种新的策略，可以设计和合成使用便宜的单宁酸衍生的碳作为电化学能源设备中使用的载体的高效多功能电催化剂。

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  • 来源
    《Advanced energy materials》 |2019年第5期|1803312.1-1803312.13|共13页
  • 作者

    Qin Qing; Jang Haeseong; Li Ping; Yuan Bing; Liu Xien; Cho Jaephil;

  • 作者单位

    Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;

    UNIST, Sch Energy & Chem Engn, Dept Energy Engn, Ulsan 689798, South Korea;

    Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;

    Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;

    Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;

    UNIST, Sch Energy & Chem Engn, Dept Energy Engn, Ulsan 689798, South Korea;

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  • 正文语种 eng
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  • 关键词

    overall water splitting cells; synergistic effect; tannic acid; trifunctional electrocatalysts; zinc-air batteries;

    机译：整体水分解池;协同效应;单宁酸;三功能电催化剂;锌空气电池;

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