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首页> 外文会议>Special topics in battery science and technology >Colloidal Manganese Oxide Nanoparticles as Bifunctional Catalysts for Oxygen Reduction and Evolution Reactions in Lithium/Air Batteries
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Colloidal Manganese Oxide Nanoparticles as Bifunctional Catalysts for Oxygen Reduction and Evolution Reactions in Lithium/Air Batteries

机译：胶态氧化锰纳米粒子作为双功能催化剂，用于锂/空气电池中的氧还原和放出反应

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摘要

A main challenge concerning the Li/air battery system is the search for bifunctional cathode catalysts for the oxygen reduction (ORR) and oxygen evolution reactions (OER) during discharge and charge, respectively. Furthermore, a replacement of noble metal catalysts by metal oxide nanoparticles is necessary for cost reduction. The main problem of the system, however, is the decomposition of the electrolyte during cell cycling, so that most of the previous studies on ORR/OER catalysts only reported the catalytic activity for electrolyte decomposition. Therefore, a stable electrolyte is required before any catalyst investigation can be carried out. Here we report on BMP-TFSI as electrolyte solvent and the effects of the addition of LiTFSI as conducting salt and DMSO as superoxide- and Li ion-coordinating solvent additive, which are investigated via cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The catalytic activity of the Mn_3O_4 particles synthesized via colloidal synthesis is evaluated by CV measurements.
机译：关于锂/空气电池系统的主要挑战是寻找双功能阴极催化剂，以分别用于在放电和充电期间的氧还原（ORR）和氧释放反应（OER）。此外，为了降低成本，必须用金属氧化物纳米颗粒代替贵金属催化剂。然而，该系统的主要问题是在电池循环期间电解质的分解，因此先前有关ORR / OER催化剂的大多数研究仅报道了电解质分解的催化活性。因此，在进行任何催化剂研究之前需要稳定的电解质。在此我们报告了BMP-TFSI作为电解质溶剂以及添加LiTFSI作为导电盐和DMSO作为超氧化物和Li离子配位溶剂添加剂的效果，这些效果通过循环伏安法（CV）和电化学阻抗谱（EIS）进行了研究。 。通过CV测量来评估经由胶体合成而合成的Mn_3O_4颗粒的催化活性。

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  • 会议地点 Seattle WA(US)
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    M. Augustin; O. Yezerska; J. Derendorf; M. Knipper; D. Fenske; T. Plaggenborg; J. Parisi;

  • 作者单位

    Fraunhofer Institute for Manufacturing Technology and Advanced Materials Wiener Str. 12, 28359 Bremen, Germany,Energy and Semiconductor Research Laboratory, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Niedersachsen, Germany;

    Fraunhofer Institute for Manufacturing Technology and Advanced Materials Wiener Str. 12, 28359 Bremen, Germany;

    Fraunhofer Institute for Manufacturing Technology and Advanced Materials Wiener Str. 12, 28359 Bremen, Germany;

    Energy and Semiconductor Research Laboratory, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Niedersachsen, Germany;

    Fraunhofer Institute for Manufacturing Technology and Advanced Materials Wiener Str. 12, 28359 Bremen, Germany;

    Energy and Semiconductor Research Laboratory, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Niedersachsen, Germany;

    Energy and Semiconductor Research Laboratory, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Niedersachsen, Germany;

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