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首页> 外文期刊>Advanced energy materials >Polydopamine-Inspired, Dual Heteroatom-Doped Carbon Nanotubes for Highly Efficient Overall Water Splitting
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Polydopamine-Inspired, Dual Heteroatom-Doped Carbon Nanotubes for Highly Efficient Overall Water Splitting

机译：受多多巴胺启发的双杂原子掺杂碳纳米管，可实现高效的总水分解

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摘要

Overall water splitting involved hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are critical for renewable energy conversion and storage. Heteroatom-doped carbon materials have been extensively employed as efficient electrocatalysts for independent HER or OER processes, while those as the bifunctional catalysts for simultaneously generating H-2 and O-2 by splitting water have been seldom reported. Inspired by the unparalleled virtues of polydopamine, the authors devise the facile synthesis of nitrogen and sulfur dual-doped carbon nanotubes with in situ, homogenous and high concentration sulfur doping. The newly developed dual-doped electrocatalysts display superb bifunctional catalytic activities for both HER and OER in alkaline solutions, outperforming all other reported carbon counterparts. Experimental characterizations confirm that the excellent performance is attributed to the multiple doping together with efficient mass and charge transfer, while theoretical computations reveal the promotion effect of secondary sulfur dopant to enhance the spin density of dual-doped samples and consequently to form highly electroactive sites for both HER and OER.
机译：总的水分解涉及氢气析出反应（HER）和氧气析出反应（OER），对可再生能源的转化和存储至关重要。杂原子掺杂的碳材料已被广泛用作独立的HER或OER工艺的有效电催化剂，而很少有人报道过通过分裂水同时生成H-2和O-2的双功能催化剂。受到聚多巴胺无与伦比的优点的启发，作者设计出了一种易于合成的原位，均质和高浓度硫掺杂的氮和硫双掺杂碳纳米管。新开发的双掺杂电催化剂在碱性溶液中对HER和OER均显示出极好的双功能催化活性，优于所有其他已报道的碳对应物。实验特性证实，优异的性能归因于多次掺杂以及有效的质量和电荷转移，而理论计算则揭示了次级硫掺杂剂对增强双掺杂样品的自旋密度并因此形成高电活性位点的促进作用。 HER和OER都一样。

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  • 来源
    《Advanced energy materials》 |2017年第9期|1602068.1-1602068.8|共8页
  • 作者

    Qu Konggang; Zheng Yao; Jiao Yan; Zhang Xianxi; Dai Sheng; Qiao Shi-Zhang;

  • 作者单位

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia|Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Sch Chem & Chem Engn, Liaocheng 252059, Peoples R China;

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;

    Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Sch Chem & Chem Engn, Liaocheng 252059, Peoples R China;

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia|Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China;

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