Highly exposed active sites of Fe/N co-doped defect-rich graphene as an efficient electrocatalyst for oxygen reduction reaction.
Highly exposed active sites of Fe/N co-doped defect-rich graphene as an efficient electrocatalyst for oxygen reduction reaction.
复制标题
Fe/N共掺杂富缺陷石墨烯的高度暴露的活性位点作为氧还原反应的高效电催化剂。
DOI：
10.1002/asia.202000903
复制
发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Niu Xueliang
中科院分区：
文献类型：
--
作者：
Zhang Tingwei;Li Zhongfang;Wang Likai;Zhang Shenzhi;Liu Yuepeng;Niu Xueliang
以聚（2，5-苯并咪唑）（ABPBI）为氮源和碳源，CaCO 3为模板剂，通过简单的合成方法制备了富缺陷的、相互连接的、分级结构的三维Fe、N共掺杂石墨烯. ABPBI具有丰富的氮元素，热解有利于形成石墨烯结构。CaCO 3及其分解产物CO2可促进形成具有更多缺陷和活性位暴露的相互连通的分级多孔三维石墨烯。富缺陷催化剂利用其缺陷催化机理作为电极材料，可以提高氧还原反应（ORR）的催化性能。电化学上，Fe-3D-NG#800的半波电位（E1/2）为0.84 V（vs. RHE），并且加速耐久性测试显示在循环伏安法扫描5000次循环后，Fe-3D-NG#800的E1/2移动了21 mV下降。因此，Fe-3D-NG#800具有比20wt%Pt/C优异的活性和耐久性。
A defect-rich interconnected hierarchical three-dimensional Fe and N co-doped graphene has been prepared by a facile synthesis with poly (2, 5-benzimidazole) (ABPBI) as nitrogen and carbon sources and CaCO 3 as the template. ABPBI possesses abundant nitrogen, and pyrolysis of ABPBI is helpful to form graphene structure. CaCO 3 and its decomposition products CO 2 can promote the formation of interconnected hierarchical porous three-dimensional graphene, which possesses more defects and exposed active sites. Benefiting from the defective catalysis mechanism, rich defects catalysts are applied as electrode materials to enhance the catalytic performance for oxygen reduction reaction (ORR). Electrochemically, the half-wave potential (E 1/2 ) of Fe-3D-NG#800 is 0.84 V (vs. RHE), and the accelerated durability tests shows the E 1/2 of Fe-3D-NG#800 shifted by a 21 mV drop after cyclic voltammetry scanning for 5000 cycles. Therefore, Fe-3D-NG#800 has excellent activity and durability than 20 wt % Pt/C.
登录
查看更多内容
吸附在 Vulcan XC-72 上的二维密堆积酰胺聚酞菁铁作为氧还原反应的高效电催化剂
影响因子：
5.3
作者：
Chongyun Sun;Zhongfang Li;Jianwei Yang;Suwen Wang;Xizhan Zhong;Likai Wang;School of Chemistry;Chemical Engineering;Sh;ong University of Technology;Zibo;PR China
通讯作者：
PR China
影响因子：
3.9
作者：
Yu, Yue;Xiao, Dejian;Ma, Jun;Chen, Changli;Li, Kai;Ma, Jie;Liao, Yi;Zheng, Lirong;Zuo, Xia
通讯作者：
Zuo, Xia
影响因子：
26.6
作者：
Lei C;Zhou W;Feng Q;Lei Y;Zhang Y;Chen Y;Qin J
通讯作者：
Qin J
影响因子：
9.5
作者：
Chunsheng Li;Yan Sun;Weihong Lai;Jiazhao Wang;S. Chou
通讯作者：
Chunsheng Li;Yan Sun;Weihong Lai;Jiazhao Wang;S. Chou
用于氧还原反应的超多孔碳负载非贵金属电催化剂
影响因子：
4.1
作者：
Tian Long Zhai;Cuijuan Xuan;Jincheng Xu;Li Ban;Zhiming Cheng;Shaolei Wang;Deli Wang;Bien Tan;Chun Zhang
通讯作者：
Chun Zhang