Biomass-Derived Air Cathode Materials: Pore-Controlled S,N-Co-doped Carbon for Fuel Cells and Metal–Air Batteries
Biomass-Derived Air Cathode Materials: Pore-Controlled S,N-Co-doped Carbon for Fuel Cells and Metal–Air Batteries
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DOI：
10.1021/acscatal.8b03730
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发表时间：
2019-03
期刊：
影响因子：
12.9
通讯作者：
Mi-Ju Kim;Ji Eun Park;Sungjun Kim;M. S. Lim;Aihua Jin;Ok-Hee Kim;Min Jeong Kim;Kug‐Seung Lee-
中科院分区：
文献类型：
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作者：
Mi-Ju Kim;Ji Eun Park;Sungjun Kim;M. S. Lim;Aihua Jin;Ok-Hee Kim;Min Jeong Kim;Kug‐Seung Lee-
地球上丰富且可行的空气阴极电催化剂对于燃料电池和金属空气电池等能源设备具有重要意义。在此，通过竹子和硫脲的热解制备了源自竹子的分级多孔S，N共掺杂碳材料，以用作氧还原反应电催化剂。由于其受控的中孔比率和增加的有效掺杂量，S,N共掺杂竹碳（SNBC）呈现出与商业Pt/C催化剂相当的半波电势和稳定性。作为阴离子交换膜燃料电池和锌空气电池的阴极材料，SNBC 表现出高性能，这归因于其固有的活性以及催化剂层中发达的二次孔结构。因此，我们证明了生物质衍生催化剂在实际能源应用中的可行性。
An earth-abundant and feasible air cathode electrocatalyst is of importance for energy devices including fuel cells and metal–air batteries. Herein, hierarchically porous S,N-co-doped carbon materials derived from bamboo are prepared via pyrolysis of bamboo and thiourea to function as oxygen reduction reaction electrocatalysts. Due to their controlled mesopore ratio and increased effective dopant amount, the S,N-co-doped bamboo carbons (SNBCs) present half-wave potentials and stabilities comparable to those of commercial Pt/C catalysts. As cathode materials for anion exchange membrane fuel cells and Zn–air batteries, SNBCs exhibit high performances, attributed to their intrinsic activities as well as well-developed secondary pore structure in the catalyst layer. Thus, we demonstrate the viability of biomass-derived catalysts for practical energy applications.