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首页> 外文期刊>Advanced Functional Materials >Embedding RhP_x in N, P Co-Doped Carbon Nanoshells Through Synergetic Phosphorization and Pyrolysis for Efficient Hydrogen Evolution
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Embedding RhP_x in N, P Co-Doped Carbon Nanoshells Through Synergetic Phosphorization and Pyrolysis for Efficient Hydrogen Evolution

机译：通过协同磷化和热解将RhP_x嵌入N，P共掺杂的碳纳米壳中以有效地释放氢气

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摘要

Rational design and controllable synthesis of well-defined nanostructures with high stability and Pt-like activity for hydrogen evolution reaction (HER) are critical for renewable energy conversion. Herein, a unique pyrolysis strategy is demonstrated for the synthesis of RhPx nanoparticles (NPs) in N, P co-doped thin carbon nanoshells (RhPx@NPC nanoshells) that display high electrocatalytic activity and stability over a wide pH range. This strategy involves simultaneous phosphorization and pyrolysis processes that can produce highly-dispersed RhPx NPs within N, P co-doped carbon nanoshells and at the same time induce thinning of carbon nanoshells from inside out. The resulting RhPx@NPC nanoshells not only possess Pt-like activity for HER with low overpotentials to achieve 10 mA cm(-2) (22 mV in 0.5 m H2SO4, 69 mV in 1.0 m KOH, and 38 mV in 1.0 m phosphate buffered saline (PBS)) but also provide long-term durability in a wide pH range. The remarkable HER performance of RhPx@NPC nanoshells is ascribed to the high surface area, abundant mesoporosity, strong catalyst-support interaction, ultrathin carbon encapsulation, and N, P co-doping. This work provides an effective strategy for designing heterostructured electrocatalysts with high catalytic activity and stability desired for reactions that may occur under harsh conditions.
机译：合理设计和可控合成的具有高稳定性和类似Pt的氢释放反应（HER）的高稳定性纳米结构对于可再生能源转化至关重要。本文中，展示了一种独特的热解策略，用于在N，P共掺杂的薄碳纳米壳（RhPx @ NPC纳米壳）中合成RhPx纳米颗粒（NPs），在宽的pH范围内显示出高的电催化活性和稳定性。该策略涉及同时进行的磷化和热解过程，可以在N，P共掺杂的碳纳米壳内产生高度分散的RhPx NP，同时诱导碳纳米壳由内而外变薄。所得的RhPx @ NPC纳米壳不仅具有HER的Pt样活性，而且具有低超电势，可实现10 mA cm（-2）（0.5 m H2SO4中为22 mV，1.0 m KOH中为69 mV，1.0 m磷酸盐缓冲中为38 mV盐水（PBS）），但在宽pH范围内也能提供长期的耐用性。 RhPx @ NPC纳米壳的卓越HER性能归因于高表面积，丰富的介孔率，强大的催化剂与载体相互作用，超薄碳包封以及N，P共掺杂。这项工作为设计具有高催化活性和稳定性的异质结构电催化剂提供了有效的策略，该催化剂对于在恶劣条件下可能发生的反应具有所需的稳定性。

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  • 来源
    《Advanced Functional Materials》 |2019年第33期|1901790.1-1901790.11|共11页
  • 作者

    Chi Jing-Qi; Zeng Xiao-Jun; Shang Xiao; Dong Bin; Chai Yong-Ming; Liu Chen-Guang; Marin Melinda; Yin Yadong;

  • 作者单位

    China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266580, Shandong, Peoples R China;

    Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China|Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA;

    China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266580, Shandong, Peoples R China;

    China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266580, Shandong, Peoples R China;

    China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266580, Shandong, Peoples R China;

    China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266580, Shandong, Peoples R China;

    Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA;

    Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA;

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  • 正文语种 eng
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  • 关键词

    carbon nanoshells; hydrogen evolution reaction; phosphorization; pyrolysis; RhPx;

    机译：碳纳米液;氢气进化反应;磷化体;热解;rhpx;

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