title: Highly active and durable methanol oxidation electrocatalyst based on the synergy of platinum-nickel hydroxide-graphene.
abstract: Active and durable electrocatalysts for methanol oxidation reaction are of critical importance to the commercial viability of direct methanol fuel cell technology. Unfortunately, current methanol oxidation electrocatalysts fall far short of expectations and suffer from rapid activity degradation. Here we report platinum-nickel hydroxide-graphene ternary hybrids as a possible solution to this long-standing issue. The incorporation of highly defective nickel hydroxide nanostructures is believed to play the decisive role in promoting the dissociative adsorption of water molecules and subsequent oxidative removal of carbonaceous poison on neighbouring platinum sites. As a result, the ternary hybrids exhibit exceptional activity and durability towards efficient methanol oxidation reaction. Under periodic reactivations, the hybrids can endure at least 500,000 s with negligible activity loss, which is, to the best of our knowledge, two to three orders of magnitude longer than all available electrocatalysts.
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Wang
authors.affiliation: Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada S7N 0X4.
authors.forename: Jigang
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada S7N 0X4.
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Dalhousie University, Halifax, Canada NS B3H 4R2.
authors.forename: Paul N
authors.initials: PN
authors.lastname: Duchesne
authors.affiliation: Canadian Light Source Inc., Saskatoon, Saskatchewan, Canada S7N 0X4.
authors.forename: David
authors.initials: D
authors.lastname: Muir
authors.affiliation: Department of Chemistry, Dalhousie University, Halifax, Canada NS B3H 4R2.
authors.forename: Peng
authors.identifier: http://orcid.org/0000-0003-3603-0175
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Na
authors.initials: N
authors.lastname: Han
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Feipeng
authors.initials: F
authors.lastname: Zhao
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zeng
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhong
authors.affiliation: State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
authors.forename: Chuanhong
authors.initials: C
authors.lastname: Jin
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou 215123, China.
authors.forename: Shuit-Tong
authors.initials: ST
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Stanford University, Stanford, California 94305, USA.
authors.forename: Hongjie
authors.initials: H
authors.lastname: Dai
mesh_terms: D002384:Catalysis; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D006108:Graphite / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry*; D000432:Methanol / Q000378:metabolism*; D008854:Microscopy, Electron; D049329:Nanostructures / Q000648:ultrastructure*; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*
chemical_list: D006878:Hydroxides; C037473:nickel hydroxide; D010984:Platinum; D006108:Graphite; D009532:Nickel; D000432:Methanol