Cobalt‐Based Electrocatalysts as Air Cathodes in Rechargeable Zn–Air Batteries: Advances and Challenges
Cobalt‐Based Electrocatalysts as Air Cathodes in Rechargeable Zn–Air Batteries: Advances and Challenges
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DOI：
10.1002/sstr.202100144
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发表时间：
2021-10
期刊：
影响因子：
15.9
通讯作者：
Fan Yang;Xingyuan Gao;Jinhao Xie;Xiaoqing Liu;Jiuxing Jiang;Xihong Lu
中科院分区：
文献类型：
--
作者：
Fan Yang;Xingyuan Gao;Jinhao Xie;Xiaoqing Liu;Jiuxing Jiang;Xihong Lu
可充电锌空气电池（ZAB）是可再生能源转换和存储的高效设备。当前ZAB技术的瓶颈之一在于缺乏用于在空气电极处同时有效地驱动氧还原反应（ORR）和析氧反应（OER）的稳健且具有成本效益的催化剂。钴基纳米材料因其本身催化活性高、成本低、储量丰富而成为最有前途的双功能氧电催化剂之一。最近，人们投入了大量精力，通过使用钴基化合物作为阴极来开发高性能ZAB。在此，ZAB中钴基电催化剂的最新进展分为四类，包括钴硫属化合物、钴氧化物、钴基层状双氢氧化物（LDH）和Co-N-C结构。在每个类别中，合成方法和修改策略进行了说明，并讨论了结构与性能的关系。最后，对目前的研究成果和面临的挑战进行了简要的总结，并对未来的探索提出了前景。
Rechargeable Zn–air batteries (ZABs) are efficient devices for renewable energy conversion and storage. One of the bottlenecks of current ZAB technology lies in the lack of robust and cost‐effective catalysts for effectively driving oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) reactions simultaneously at air electrodes. Owing to the high intrinsic catalytic activity, low cost, and abundant reserves, cobalt (Co)‐based nanomaterials have become one of the most promising bifunctional oxygen electrocatalysts. Recently, considerable efforts have been devoted to developing high‐performance ZABs by using Co‐based compounds as cathodes. Herein, the recent progress of Co‐based electrocatalysts in ZABs is covered in four categories, including cobalt chalcogenides, cobalt oxides, Co‐based layered double hydroxides (LDHs), and Co–N–C structures. In each category, synthesis approaches and modification strategies are illustrated, and the structure–performance relationships are discussed. To conclude, a brief summary of current achievements and challenges is provided, and a prospect for future explorations is proposed.