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首页> 外文期刊>Advanced energy materials >Metal–Organophosphine Framework-Derived N,P-Codoped Carbon-Confined Cu_3P Nanopaticles for Superb Na-Ion Storage
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Metal–Organophosphine Framework-Derived N,P-Codoped Carbon-Confined Cu_3P Nanopaticles for Superb Na-Ion Storage

机译：金属-有机膦骨架衍生的N，P-掺杂碳限制的Cu_3P纳米粒子，用于极好的钠离子存储

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摘要

Metal-organic framework derived approaches are emerging as a viable way to design carbon-confined transitional metal phosphides (TMPs@C) for energy storage and conversion. However, their preparation generally involves a phosphorization using a large amount of additional P sources, which inevitably releases flammable, poisonous PH3. Therefore, developing an efficient strategy for eco-friendly synthesis of TMPs@C is full of challenges. Here, a metal-organophosphine framework (MOPF) derived strategy is developed to allow an eco-friendly design of TMPs@C without an additional P source, avoiding release of PH3. To illustrate this strategy, 1,3,5-triaza-7-phosphaadamantane (PTA) ligands and Cu(NO3)(2) metal centers are employed to construct Cu/PTA-MOPFs nanosheets. Cu/PTA-MOPFs can be directly converted to carbon-confined Cu3P nanoparticles by annealing. Benefiting from high heteroatom content in PTA, a high doping content of 3.92 at% N and 8.26 at% P can also be achieved in the carbon matrix. As a proof-of-concept application, N,P-codoped carbon-confined Cu3P nanoparticles as anodes for Na-ion storage exhibit a high initial reversible capacity of 332 mA h g(-1) at 50 mA g(-1), and superb rate and cyclic performance. Due to rich coordination modes of organophosphine, MOPFs are expected to become a promising molecular platform for design of various heteroatom-doped TMPs@C for energy storage and conversion.
机译：金属有机框架衍生的方法正在成为设计用于储能和转化的碳限制过渡金属磷化物（TMPs @ C）的可行方法。但是，它们的制备通常涉及使用大量其他P源进行磷化，不可避免地释放出可燃的有毒PH3。因此，为TMP​​s @ C的环保合成开发有效的策略充满了挑战。在这里，开发了一种金属-有机膦骨架（MOPF）衍生的策略，以允许TMPs @ C的环保设计，而无需额外的P源，从而避免了PH3的释放。为了说明该策略，采用1,3,5-三氮杂-7-磷金刚烷（PTA）配体和Cu（NO3）（2）金属中心来构建Cu / PTA-MOPFs纳米片。 Cu / PTA-MOPF可以通过退火直接转化为碳限制的Cu3P纳米粒子。得益于PTA中高杂原子含量，在碳基质中也可以实现3.92 at％N和8.26 at％P的高掺杂含量。作为概念验证的应用，N，P掺杂的碳约束的Cu3P纳米粒子作为Na离子存储的阳极在50 mA g（-1）时具有332 mA hg（-1）的高初始可逆容量，并且高超的速率和循环性能。由于有机膦的丰富配位模式，MOPF有望成为有前途的分子平台，用于设计各种杂原子掺杂的TMP @ C，用于能量存储和转化。

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  • 来源
    《Advanced energy materials》 |2018年第27期|1801489.1-1801489.9|共9页
  • 作者

    Kong Minhong; Song Huaihe; Zhou Jisheng;

  • 作者单位

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Chem Resource Engn, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Chem Resource Engn, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Chem Resource Engn, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Cu3P; metal-organophosphine frameworks; Na-ion storage; N,P-codoping carbon; transitional metal phosphides;

    机译：Cu3P;金属有机膦骨架;Na离子存储;N;P共掺杂碳;过渡金属磷化物;

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