journal article·2020-02-28

Bimetallic CoNi Alloy Nanoparticles Embedded in Pomegranate-like Nitrogen-Doped Carbon Spheres for Electrocatalytic Oxygen Reduction and Evolution

Lu Chen, Zhixiao Xu, Wenjie Han, Qing Zhang, Zhengyu Bai, Zhi Chen, Ge Li, Xiaolei Wang

ACS Applied Nano Materials· Volume 3· Issue 2
Publisher page

Abstract

Electrocatalysts for oxygen reactions play a vital role in the applications of energy conversion devices, such as in fuel cells, water splitting, and metal–air batteries. Developing novel nonprecious bifunctional electrocatalysts is particularly essential for improved-performance metal–air batteries by overcoming sluggish oxygen reactions. Herein, we demonstrate a composite electrocatalyst with bimetallic CoNi alloy nanocrystals embedded within nitrogen-doped highly graphitic carbon spheres (N-CoNi/PCS). Owing to the efficient design strategy, such a composite electrocatalyst exhibits a unique pomegranate-like morphology and microstructure. When applied to an alkaline electrolyte system, the porous electrocatalyst delivers a low half-wave potential of 0.80 V toward ORR and overpotential of 540 mV toward OER with excellent durability. The high performance is systematically studied and ascribed to the unique nanoarchitecture which enables fast ion transportation and electron transfer, easy access to abundant active sites, and robustness. This work forwards the field of fabricating a highly active, affordable, and stable bifunctional electrocatalyst for energy conversion.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Fuel Cells and Related Materials

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

Affiliations

Department of Chemical and Materials Engineering, Concordia University, 1455 De Maisonneuve Boulevard W., Montreal, Quebec H3G 1M8, Canada

Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta T6G 1H9, Canada

Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, No. 46 Jianshe Road East, Xinxiang, Henan 453007, P.R. China

Department of Building, Civil and Environmental Engineering, Concordia University, 1455 De Maisonneuve Boulevard W., Montreal, Quebec H3G 1M8, Canada

Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta T6G 1H9, Canada

Funding

Concordia University · Henan Normal University · University of Alberta · Natural Sciences and Engineering Research Council of Canada

References (54)

Show source-provided references
1. 10.1002/adfm.20180332910.1002/adfm.201803329 ↗
2. 10.1016/j.carbon.2010.04.03810.1016/j.carbon.2010.04.038 ↗
3. 10.1039/C9TA04569D10.1039/C9TA04569D ↗
4. 10.1021/acsenergylett.7b0011910.1021/acsenergylett.7b00119 ↗
5. 10.1021/nl204432710.1021/nl2044327 ↗
6. 10.1002/adma.20180746810.1002/adma.201807468 ↗
7. 10.1016/j.carbon.2018.12.05310.1016/j.carbon.2018.12.053 ↗
8. 10.1021/nl802959b10.1021/nl802959b ↗
9. 10.1126/science.117037710.1126/science.1170377 ↗
10. 10.1021/cs401187510.1021/cs4011875 ↗
11. 10.1038/s41929-019-0246-210.1038/s41929-019-0246-2 ↗
12. 10.1039/C6CS00328A10.1039/C6CS00328A ↗
13. 10.1002/adma.20160645910.1002/adma.201606459 ↗
14. 10.1021/acscatal.5b0156310.1021/acscatal.5b01563 ↗
15. 10.1002/adfm.20170509410.1002/adfm.201705094 ↗
16. 10.1002/anie.20120672010.1002/anie.201206720 ↗
17. 10.1002/chem.20130456110.1002/chem.201304561 ↗
18. 10.1039/c3ta11849e10.1039/c3ta11849e ↗
19. 10.1002/anie.20110128710.1002/anie.201101287 ↗
20. 10.1016/j.apcatb.2019.11820910.1016/j.apcatb.2019.118209 ↗
21. 10.1016/j.carbon.2016.11.01410.1016/j.carbon.2016.11.014 ↗
22. 10.1002/smll.20150229710.1002/smll.201502297 ↗
23. 10.1016/j.jpowsour.2017.08.06210.1016/j.jpowsour.2017.08.062 ↗
24. 10.1016/j.carbon.2019.02.04610.1016/j.carbon.2019.02.046 ↗
25. 10.1016/j.jechem.2018.08.00710.1016/j.jechem.2018.08.007 ↗
26. 10.1016/j.jallcom.2017.03.24110.1016/j.jallcom.2017.03.241 ↗
27. 10.1002/ente.20180106110.1002/ente.201801061 ↗
28. 10.1016/j.jallcom.2019.05.03610.1016/j.jallcom.2019.05.036 ↗
29. 10.1016/j.jcis.2018.11.02210.1016/j.jcis.2018.11.022 ↗
30. 10.1002/anie.20150361210.1002/anie.201503612 ↗
31. 10.1016/j.apcatb.2018.08.07410.1016/j.apcatb.2018.08.074 ↗
32. 10.1016/j.jallcom.2019.05.20510.1016/j.jallcom.2019.05.205 ↗
33. 10.1016/j.carbon.2018.12.00810.1016/j.carbon.2018.12.008 ↗
34. 10.1016/j.jpowsour.2016.01.01810.1016/j.jpowsour.2016.01.018 ↗
35. 10.1016/j.apcatb.2018.09.02510.1016/j.apcatb.2018.09.025 ↗
36. 10.1021/nl500859p10.1021/nl500859p ↗
37. 10.1039/c3ta11342f10.1039/c3ta11342f ↗
38. 10.1016/j.apsusc.2011.05.13110.1016/j.apsusc.2011.05.131 ↗
39. 10.1016/j.jallcom.2019.03.33010.1016/j.jallcom.2019.03.330 ↗
40. 10.1021/acsami.8b1329010.1021/acsami.8b13290 ↗
41. 10.1016/j.apcatb.2018.08.08110.1016/j.apcatb.2018.08.081 ↗
42. 10.1002/cctc.20150046510.1002/cctc.201500465 ↗
43. 10.1039/C9CY00266A10.1039/C9CY00266A ↗
44. 10.1088/1361-6528/ab31bf10.1088/1361-6528/ab31bf ↗
45. 10.1016/j.surfcoat.2018.06.00810.1016/j.surfcoat.2018.06.008 ↗
46. 10.1016/j.electacta.2013.11.02610.1016/j.electacta.2013.11.026 ↗
47. 10.1126/sciadv.150056410.1126/sciadv.1500564 ↗
48. 10.1002/anie.20160075010.1002/anie.201600750 ↗
49. 10.1016/j.apcatb.2016.09.04810.1016/j.apcatb.2016.09.048 ↗
50. 10.1039/c2ee21802j10.1039/c2ee21802j ↗
51. 10.1002/celc.20180121710.1002/celc.201801217 ↗
52. 10.22180/na17210.22180/na172 ↗
53. 10.1038/s41586-019-1603-710.1038/s41586-019-1603-7 ↗
54. 10.1038/srep3120210.1038/srep31202 ↗