| 查看: 470 | 回复: 1 | |||
albert199010新虫 (小有名气)
|
[交流]
Manthiram组最新氧催化文章 已有1人参与
|
|
题目：Delineating the roles of Co3O4 and N-doped carbon nanoweb (CNW) in bifunctional Co3O4/ CNW catalysts for oxygen reduction and oxygen evolution reactions 关于氧催化催化剂中碳材料和金属氧化物的催化活性 摘要：While many synthesis methods have been reported for Co3O4–carbon nanocomposites as a bifunctional electrocatalyst for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in alkaline solutions, the individual contributions of Co3O4 and CNW towards ORR and OER are still not clear. Here, we report the individual functionality of Co3O4 and the N-doped carbon nanoweb (CNW) in ORR and OER. The Co3O4/CNW bifunctional catalysts were synthesized by an in situ growth of Co precursors onto CNW followed by a controlled heat treatment. The specific functions of Co3O4 and CNW were delineated by rotating disk electrode measurements. It was found that Co3O4 alone exhibited poor ORR catalytic activity. However, in the presence of CNW, Co3O4 assisted the selective fourelectron oxygen reduction over the two-electron pathway. Analyses of the Tafel slope and reaction order suggested that Co3O4 acted as the primary catalytic site for OER. CNW improved the electronic conduction between Co3O4 and the current collector. CNW underwent serious degradation at the high potential of the OER but its stability improved greatly upon the deposition of Co3O4. Two possible mechanisms for the improved catalytic stability are discussed. The findings demonstrate the specific functions of Co3O4 and CNW in catalyzing the OER and ORR and further establish an understanding of the synergy of the composite in electrocatalysis. |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : J._Mater._Chem._A_2015_Liu.pdf
2015-11-08 03:30:55, 1.81 M
» 猜你喜欢
锂电池正极材料前驱体法制备正极材料
已经有2人回复
-
硫酸钠与碳酸氢铵制备碳酸氢钠和硫酸铵
已经有4人回复
-
分析化学论文润色/翻译怎么收费?
已经有74人回复
-
深圳理工大学-湖南大学招收电化学方向联培博士生1名
已经有3人回复
-
求助，我做的标准曲线横坐标是浓度的lg值，如果我要算检出限的话该怎么算
已经有0人回复
-
交流｜5% SP/NMP 导电浆料预分散经验（钠电 / 锂电用）
已经有1人回复
-
2026储能方向博士
已经有3人回复
-
科研工作者面临的几个矛盾，你会怎么选
已经有2人回复
-
阴离子交换膜电解槽电压衰减原因
已经有0人回复
-
铜的植物缓蚀剂研究
已经有0人回复
-
26年电池方向博士申请
已经有2人回复
» 本主题相关商家推荐: (我也要在这里推广)
2楼2015-11-08 03:39:20
10
