journal article·2016-04-27

Creation of Ge–Nx–Cy Configures in Carbon Nanotubes: Origin of Enhanced Electrocatalytic Performance for Oxygen Reduction Reaction

Xilin She, Qianqian Li, Na Ma, Jin Sun, Dengwei Jing, Chengmeng Chen, Lijun Yang, Dongjiang Yang

Publisher page

Abstract

High-performance nitrogen and germanium codoped carbon nanotubes (N-Ge-CNTs) were synthesized as oxygen reduction reaction (ORR) catalysts by one-step sintering of carboxyethyl germanium sesquioxide and multiwalled CNTs in NH3 atmosphere. The ORR electrocatalytic activity evaluation was performed by using limited current density, selective reaction pathway, onset potential, H2O2 yields, and kinetic current density. In comparison with Ge or N solely doped CNTs, the codoped samples display more excellent ORR catalytic performance. It was observed that the codoped GeN3C, GeN4, and GeN4 + NC3 microstructures in N-Ge-CNTs are crucial to improving ORR catalytic performance, such as ideal 4 electron pathway (3.95) and positive onset potential (-0.08 V). The high ORR performance is attributed to the synergistic effect of N and Ge doping, which is capable of activating the π electrons of sp(2) hybridized orbital around carbon nantotubes. The ORR catalytic synergistic effect has also been verified by calculating the work function on the basis of density functional theory (DFT).
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Environmental Science and Engineering, Collaborative Innovation Center for Marine Biomass Fibers, Qingdao University, Qingdao, 266071, P R China

International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, P R China

Key Laboratory of Carbon Materials Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P R China

Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210046, P R China

Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, Brisbane, QLD 4111, Australia

Funding

Australian Research Council · National Natural Science Foundation of China · State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University

References (60)

Show source-provided references
1. 10.1038/nchem.106910.1038/nchem.1069 ↗
2. 10.1126/science.117208310.1126/science.1172083 ↗
3. 10.1038/nature1111510.1038/nature11115 ↗
4. 10.1126/science.113594110.1126/science.1135941 ↗
5. 10.1039/c2ee03590a10.1039/c2ee03590a ↗
6. 10.1021/ja209753w10.1021/ja209753w ↗
7. 10.1038/nchem.36710.1038/nchem.367 ↗
8. 10.1021/ja101966a10.1021/ja101966a ↗
9. 10.1021/ja403041g10.1021/ja403041g ↗
10. 10.1126/science.aaa876510.1126/science.aaa8765 ↗
11. 10.1021/ar400011z10.1021/ar400011z ↗
12. 10.1038/nnano.2012.7210.1038/nnano.2012.72 ↗
13. 10.1126/science.115926710.1126/science.1159267 ↗
14. 10.1002/anie.20130598110.1002/anie.201305981 ↗
15. 10.1002/anie.20110017010.1002/anie.201100170 ↗
16. 10.1021/ja101749y10.1021/ja101749y ↗
17. 10.1038/nnano.2015.4810.1038/nnano.2015.48 ↗
18. 10.1021/nn302906r10.1021/nn302906r ↗
19. 10.1039/b919494k10.1039/b919494k ↗
20. 10.1002/smll.20050032410.1002/smll.200500324 ↗
21. 10.1039/c2jm16075g10.1039/c2jm16075g ↗
22. 10.1021/ja211266m10.1021/ja211266m ↗
23. 10.1016/j.apcatb.2007.09.04710.1016/j.apcatb.2007.09.047 ↗
24. 10.1016/j.diamond.2011.11.00410.1016/j.diamond.2011.11.004 ↗
25. 10.1021/jp062206d10.1021/jp062206d ↗
26. 10.1016/j.ijhydene.2010.11.02510.1016/j.ijhydene.2010.11.025 ↗
27. 10.1126/science.116804910.1126/science.1168049 ↗
28. 10.1039/C4TA03052D10.1039/C4TA03052D ↗
29. 10.1021/acscentsci.5b0019110.1021/acscentsci.5b00191 ↗
30. 10.1039/c2nr33839d10.1039/c2nr33839d ↗
31. 10.1021/ja309270h10.1021/ja309270h ↗
32. 10.1039/c2jm33114d10.1039/c2jm33114d ↗
33. 10.1039/C5TA03199K10.1039/C5TA03199K ↗
34. 10.1002/anie.20090728910.1002/anie.200907289 ↗
35. 10.1021/ja208940u10.1021/ja208940u ↗
36. 10.1002/fuce.20110011110.1002/fuce.201100111 ↗
37. 10.1002/anie.20110128710.1002/anie.201101287 ↗
38. 10.1021/ja310566z10.1021/ja310566z ↗
39. 10.1002/adma.20130187010.1002/adma.201301870 ↗
40. 10.1039/C2CC16192C10.1039/C2CC16192C ↗
41. 10.1002/anie.20100676810.1002/anie.201006768 ↗
42. 10.1002/anie.20110925710.1002/anie.201109257 ↗
43. 10.1002/anie.20120672010.1002/anie.201206720 ↗
44. 10.1021/ja310566z10.1021/ja310566z ↗
45. 10.1063/1.141751510.1063/1.1417515 ↗
46. 10.1109/VLSIT.2003.122111210.1109/VLSIT.2003.1221112 ↗
47. 10.1002/smll.20150330510.1002/smll.201503305 ↗
48. 10.1103/PhysRevB.48.1311510.1103/PhysRevB.48.13115 ↗
49. 10.1021/nn102339t10.1021/nn102339t ↗
50. 10.1021/jp400573w10.1021/jp400573w ↗
51. 10.1002/adfm.20110103710.1002/adfm.201101037 ↗
52. 10.1063/1.34304210.1063/1.343042 ↗
53. 10.1063/1.220639510.1063/1.2206395 ↗
54. 10.1021/ja209206c10.1021/ja209206c ↗
55. 10.1038/nmat308710.1038/nmat3087 ↗
56. 10.1039/C4NR03340J10.1039/C4NR03340J ↗
57. 10.1016/j.carbon.2015.07.04310.1016/j.carbon.2015.07.043 ↗
58. 10.1186/1556-276X-7-54810.1186/1556-276X-7-548 ↗
59. 10.1021/ja503347410.1021/ja5033474 ↗
60. 10.1002/cphc.20140260810.1002/cphc.201402608 ↗