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首页> 外文期刊>Journal of power sources >Phase-controlled synthesis of polymorphic tungsten diphosphide with hybridization of monoclinic and orthorhombic phases as a novel electrocatalyst for efficient hydrogen evolution
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Phase-controlled synthesis of polymorphic tungsten diphosphide with hybridization of monoclinic and orthorhombic phases as a novel electrocatalyst for efficient hydrogen evolution

机译：单斜相和正交晶相杂相的多相二磷化钨的相控合成，作为高效析氢的新型电催化剂

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摘要

The design and development of high-efficiency and non-noble-metal hydrogen evolution reaction (HER) electrocatalysts for future clean and renewable energy system has excited significant research interests over the recent years. In this communication, the polymorphic tungsten diphosphide (p-WP2) nano-particles with mixed monoclinic (alpha-) and orthorhombic (beta-) phases are synthesized by phase-controlled phosphidation route via vacuum capsulation and explored as a novel efficient electrocatalyst towards HER. The p-WP2 catalyst delivers superior performance with excellent stability under both acidic and alkaline conditions over its single phases of alpha-WP2 and beta-WP2. This finding demonstrates that a highly efficient hybrid electrocatalyst can be achieved via precise composition controlling and may open up exciting opportunities for their practical applications toward energy conversion. (C) 2017 Elsevier B.V. All rights reserved.
机译：近年来，用于未来清洁和可再生能源系统的高效非贵金属氢析出反应（HER）电催化剂的设计和开发引起了人们的重大研究兴趣。在这种交流中，通过真空包封通过相控磷化途径合成了具有混合单斜晶（α-）相和正交晶（β-）相的多晶型二磷化钨（p-WP2）纳米颗粒，并被探索为一种针对HER的新型高效电催化剂。在其酸性和碱性条件下，p-WP2催化剂在其单相α-WP2和β-WP2上均具有出色的性能和出色的稳定性。该发现表明，可以通过精确的组成控制来获得高效的混合电催化剂，并且可以为它们的实际应用向能量转化开辟令人兴奋的机会。 （C）2017 Elsevier B.V.保留所有权利。

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