|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM311751016 |
| 003 |
DE-627 |
| 005 |
20231225142928.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231225s2020 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1002/adma.202003493
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n1039.xml
|
| 035 |
|
|
|a (DE-627)NLM311751016
|
| 035 |
|
|
|a (NLM)32596981
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Lyu, Xiao
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Gradient-Concentration Design of Stable Core-Shell Nanostructure for Acidic Oxygen Reduction Electrocatalysis
|
| 264 |
|
1 |
|c 2020
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Revised 30.09.2020
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
|
| 520 |
|
|
|a Manipulating the surface structure of electrocatalysts at the atomic level is of primary importance to simultaneously achieve the activity and stability dual-criteria in oxygen reduction reaction (ORR) for proton exchange membrane fuel cells. Here, a durable acidic ORR electrocatalyst with the "defective-armored" structure of Pt shell and Pt-Ni core nanoparticle decorated on graphene (Pt-NiPtD /G) using a facile and controllable galvanic replacement reaction to generate gradient distribution of Pt-Ni composition from surface to interior, followed by a partial dealloying approach, leaching the minor nickel atoms on the surface to generate defective Pt skeleton shell, is reported. The Pt-Ni@PtD /G catalyst shows impressive performance for ORR in acidic (0.1 m HClO4 ) electrolyte, with a high mass activity of threefold higher than that of Pt/C catalyst owing to the tuned electronic structure of locally concave Pt surface sites through synergetic contributions of Pt-Ni core and defective Pt shell. More importantly, the electrochemically active surface areas still retain 96% after 20 000 potential cycles, attributing to the Pt atomic shell acting as the protective "armor" to prevent interior Ni atoms from further dissolution during the long-term operation
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Pt-Ni
|
| 650 |
|
4 |
|a electrocatalysts
|
| 650 |
|
4 |
|a gradient materials
|
| 650 |
|
4 |
|a oxygen reduction reaction
|
| 650 |
|
4 |
|a surface defects
|
| 700 |
1 |
|
|a Jia, Yi
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Mao, Xin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Li, Daohao
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Li, Gen
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Zhuang, Linzhou
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Wang, Xin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Yang, Dongjiang
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Wang, Qiang
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Du, Aijun
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Yao, Xiangdong
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 32 vom: 12. Aug., Seite e2003493
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
|
| 773 |
1 |
8 |
|g volume:32
|g year:2020
|g number:32
|g day:12
|g month:08
|g pages:e2003493
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1002/adma.202003493
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 32
|j 2020
|e 32
|b 12
|c 08
|h e2003493
|