Trifunctional Rare‐Metal‐Free Electrocatalysts Prepared Entirely from Biomass
Trifunctional Rare‐Metal‐Free Electrocatalysts Prepared Entirely from Biomass
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DOI：
10.1002/aesr.202200107
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发表时间：
2022-09
期刊：
影响因子：
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通讯作者：
Kosuke Ishibashi;M. Grewal;Koju Ito;Naoki Shoji;Y. Matsuo;H. Yabu
中科院分区：
文献类型：
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作者：
Kosuke Ishibashi;M. Grewal;Koju Ito;Naoki Shoji;Y. Matsuo;H. Yabu
作为实现低碳氢社会的一部分，对高性能电催化剂的需求不断增加，这是燃料电池和水电解系统的关键材料。尽管铂族金属具有较高的催化活性，但由于资源限制、生产国家有限以及地缘政治供应问题，生产成本不断增加，威胁着它们的使用。因此，要实现电化学催化剂的可持续生产，在资源利用方面做出实质性的改变至关重要。本文报道了以海鞘、干血粉和氰钴胺为原料的纤维素纳米纤维热解制备三功能生物质衍生电催化剂，用于氧还原反应和氧/氢析反应。N， P， FeN4和CoN4结构结合在碳网络中，导致了与稀有金属基电催化剂和其他碳合金电催化剂相当的高电化学性能。这项工作为利用工业废物等生物质资源制造高容量储能装置提供了一种可能的策略，而不需要稀有金属或其他有害重金属。
As part of ongoing efforts to realize a low‐carbon and hydrogen‐based society, there is an increasing demand for high‐performance electrocatalysts, which are key materials for fuel cells and water electrolysis systems. Although platinum group metals exhibit high catalytic activity, increasing production costs due to resource constraints, limited countries of production, and geopolitical supply issues are threatening their use. Therefore, it is crucial to make substantial changes in resource utilization for the sustainable production of electrochemical catalysts. Herein, the preparation of trifunctional biomass‐derived electrocatalysts for the oxygen reduction reaction and oxygen/hydrogen evolution reactions by the pyrolysis of cellulose nanofibers from ascidian tunicates, dried blood meal, and cyanocobalamin is reported. The combination of N, P, FeN4, and CoN4 structures incorporated in the carbon network leads to high electrochemical performance comparable with rare‐metal‐based electrocatalysts and other carbon alloy electrocatalysts. This work provides a possible strategy for fabricating high‐capacity energy storage devices from biomass resources such as industrial waste without the need for rare metals or other harmful heavy metals.