Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries,ChemElectroChem

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Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-03-26 , DOI: 10.1002/celc.201800141
Ronghua Wang ₁ , Zhen Chen ₂ , Ning Hu ₃ , Chaohe Xu _{3,

4} , Zexiang Shen ₂ , Jilei Liu ₅

Affiliation

Rechargeable aqueous Li/Zn‐air batteries have become the most attractive energy storage devices because of their extremely high theoretical energy density, which enables electric vehicles to drive long range. However, current achievements still suffer from poor cycle life, low practical energy density, low round‐trip efficiency, and high manufacturing costs. One of the key challenges is the sluggish kinetics of oxygen electrochemistry during discharge and charge cycles. Thus, significant breakthroughs in design and synthesis of efficient electrocatalysts for the oxygen redox reaction are highly demanded. Nanocarbons, especially heteroatoms doped nanocarbons, are potential oxygen reduction reaction (ORR) catalysts due to the reasonable balance between catalytic activity, durability, and cost. Importantly, by introduction of transition metal nanoparticles, spinel oxides, layered‐double hydroxides, perovskite oxides, and other metal oxides, the constructed nanocarbon‐based materials could deliver promising bifunctional ORR and oxygen evolution reaction (OER) catalytic properties, which could be employed as air‐cathode materials to improve energy storage performances, even to get commercialized. Here, an overview of the recent progress of nanocarbon‐based electrocatalysts as air‐cathode materials for rechargeable aqueous Li/Zn‐air batteries is provided, aiming to highlight the benefits and issues of nanocarbon‐based electrocatalysts as well as to outline the most promising results and applications so far.

中文翻译：

用于可充电锂/锌-空气电池的基于纳米碳的电催化剂

锂/锌空气可充电水电池由于其极高的理论能量密度而成为最吸引人的能量存储设备，从而使电动汽车能够长距离行驶。然而，当前的成就仍然受到循环寿命差，实际能量密度低，往返效率低和制造成本高的困扰。关键挑战之一是在放电和充电周期中氧气电化学反应的缓慢。因此，非常需要在设计和合成用于氧氧化还原反应的有效电催化剂方面的重大突破。纳米碳，特别是杂原子掺杂的纳米碳，由于催化活性，耐久性和成本之间的合理平衡，是潜在的氧还原反应（ORR）催化剂。重要的，通过引入过渡金属纳米粒子，尖晶石氧化物，层状双氢氧化物，钙钛矿氧化物和其他金属氧化物，所构造的基于纳米碳的材料可以提供有希望的双功能ORR和氧释放反应（OER）催化性能，可以用作空气阴极材料可提高储能性能，甚至可以实现商业化。在此，概述了纳米碳基电催化剂作为可充电锂/锌空气电池的空气阴极材料的最新进展，旨在突出纳米碳基电催化剂的优点和问题，并概述了最有前途的到目前为止的结果和应用。所构造的基于纳米碳的材料可以提供有前途的双功能ORR和氧释放反应（OER）催化性能，可以用作空气阴极材料以改善储能性能，甚至可以实现商业化。在此，概述了纳米碳基电催化剂作为可充电锂/锌空气电池的空气阴极材料的最新进展，旨在突出纳米碳基电催化剂的优点和问题，并概述了最有前途的到目前为止的结果和应用。所构造的基于纳米碳的材料可以提供有前途的双功能ORR和氧释放反应（OER）催化性能，可以用作空气阴极材料以改善储能性能，甚至可以实现商业化。在此，概述了纳米碳基电催化剂作为可充电锂/锌空气电池的空气阴极材料的最新进展，旨在突出纳米碳基电催化剂的优点和问题，并概述了最有前途的到目前为止的结果和应用。

更新日期：2018-03-26

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