In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery
Abstract An in situ coupling strategy to prepare Co9S8/S and N dual-doped graphene composite (Co9S8/NSG) has been proposed. The key point of this strategy is the function-oriented design of organic compounds. Herein, cobalt porphyrin derivatives with sulfo groups are employed as not only the couplin...
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doaj-6afcb2d1efac498bad476115f23bb19c2020-11-24T21:18:59ZengSpringerOpenNano-Micro Letters2311-67062150-55512019-01-0111111410.1007/s40820-018-0231-3In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air BatteryQi Shao0Jiaqi Liu1Qiong Wu2Qiang Li3Heng-guo Wang4Yanhui Li5Qian Duan6School of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologySchool of Materials Science and Engineering, Changchun University of Science and TechnologyAbstract An in situ coupling strategy to prepare Co9S8/S and N dual-doped graphene composite (Co9S8/NSG) has been proposed. The key point of this strategy is the function-oriented design of organic compounds. Herein, cobalt porphyrin derivatives with sulfo groups are employed as not only the coupling agents to form and anchor Co9S8 on the graphene in situ, but also the heteroatom-doped agent to generate S and N dual-doped graphene. The tight coupling of multiple active sites endows the composite materials with fast electrochemical kinetics and excellent stability for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The obtained electrocatalyst exhibits better activity parameter (ΔE = 0.82 V) and smaller Tafel slope (47.7 mV dec−1 for ORR and 69.2 mV dec−1 for OER) than commercially available Pt/C and RuO2. Most importantly, as electrocatalyst for rechargeable Zn–air battery, Co9S8/NSG displays low charge–discharge voltage gap and outstanding long-term cycle stability over 138 h compared to Pt/C–RuO2. To further broaden its application scope, a homemade all-solid-state Zn–air battery is also prepared, which displays good charge–discharge performance and cycle performance. The function-oriented design of N4-metallomacrocycle derivatives might open new avenues to strategic construction of high-performance and long-life multifunctional electrocatalysts for wider electrochemical energy applications.http://link.springer.com/article/10.1007/s40820-018-0231-3In situ coupling strategyPorphyrin derivateDoped grapheneMetal sulfideBifunctional electrocatalystRechargeable Zn–air battery |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qi Shao Jiaqi Liu Qiong Wu Qiang Li Heng-guo Wang Yanhui Li Qian Duan |
spellingShingle |
Qi Shao Jiaqi Liu Qiong Wu Qiang Li Heng-guo Wang Yanhui Li Qian Duan In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery Nano-Micro Letters In situ coupling strategy Porphyrin derivate Doped graphene Metal sulfide Bifunctional electrocatalyst Rechargeable Zn–air battery |
author_facet |
Qi Shao Jiaqi Liu Qiong Wu Qiang Li Heng-guo Wang Yanhui Li Qian Duan |
author_sort |
Qi Shao |
title |
In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery |
title_short |
In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery |
title_full |
In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery |
title_fullStr |
In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery |
title_full_unstemmed |
In Situ Coupling Strategy for Anchoring Monodisperse Co9S8 Nanoparticles on S and N Dual-Doped Graphene as a Bifunctional Electrocatalyst for Rechargeable Zn–Air Battery |
title_sort |
in situ coupling strategy for anchoring monodisperse co9s8 nanoparticles on s and n dual-doped graphene as a bifunctional electrocatalyst for rechargeable zn–air battery |
publisher |
SpringerOpen |
series |
Nano-Micro Letters |
issn |
2311-6706 2150-5551 |
publishDate |
2019-01-01 |
description |
Abstract An in situ coupling strategy to prepare Co9S8/S and N dual-doped graphene composite (Co9S8/NSG) has been proposed. The key point of this strategy is the function-oriented design of organic compounds. Herein, cobalt porphyrin derivatives with sulfo groups are employed as not only the coupling agents to form and anchor Co9S8 on the graphene in situ, but also the heteroatom-doped agent to generate S and N dual-doped graphene. The tight coupling of multiple active sites endows the composite materials with fast electrochemical kinetics and excellent stability for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The obtained electrocatalyst exhibits better activity parameter (ΔE = 0.82 V) and smaller Tafel slope (47.7 mV dec−1 for ORR and 69.2 mV dec−1 for OER) than commercially available Pt/C and RuO2. Most importantly, as electrocatalyst for rechargeable Zn–air battery, Co9S8/NSG displays low charge–discharge voltage gap and outstanding long-term cycle stability over 138 h compared to Pt/C–RuO2. To further broaden its application scope, a homemade all-solid-state Zn–air battery is also prepared, which displays good charge–discharge performance and cycle performance. The function-oriented design of N4-metallomacrocycle derivatives might open new avenues to strategic construction of high-performance and long-life multifunctional electrocatalysts for wider electrochemical energy applications. |
topic |
In situ coupling strategy Porphyrin derivate Doped graphene Metal sulfide Bifunctional electrocatalyst Rechargeable Zn–air battery |
url |
http://link.springer.com/article/10.1007/s40820-018-0231-3 |
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