A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example
The bi-functional activities of electrocatalysts for the oxygen reduction reaction (ORR) and discharge products decomposition in the typical organic electrolyte of rechargeable Li-O2 batteries are proposed to be effectively evaluated by cyclic voltammetry (CV) with varying the lower potential limit....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S138824812100093X |
| _version_ | 1818944701769711616 |
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| author | Ting-Hsuan You Chi-Chang Hu Hui-Ching Chien Tien-Yu Yi |
| author_facet | Ting-Hsuan You Chi-Chang Hu Hui-Ching Chien Tien-Yu Yi |
| author_sort | Ting-Hsuan You |
| collection | DOAJ |
| description | The bi-functional activities of electrocatalysts for the oxygen reduction reaction (ORR) and discharge products decomposition in the typical organic electrolyte of rechargeable Li-O2 batteries are proposed to be effectively evaluated by cyclic voltammetry (CV) with varying the lower potential limit. The free-standing Ru-Sn oxides-decorated graphene nanowalls are employed as examples to demonstrate this interesting methodology. Both Ru-enriched and Sn-enriched Ru-Sn oxides (RTO73 and RTO37) show higher bi-functional activities than two mono-oxides and pure graphene from CV and confirmed by the charge–discharge results. The full cell performances such as rate capability, cycle life and charge–discharge voltage gaps can be correlated to the findings from CV. |
| first_indexed | 2024-12-20T07:47:25Z |
| format | Article |
| id | doaj.art-f905bb4268644b16bf4388151904f624 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-20T07:47:25Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-f905bb4268644b16bf4388151904f6242022-12-21T19:47:56ZengElsevierElectrochemistry Communications1388-24812021-04-01125107009A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an exampleTing-Hsuan You0Chi-Chang Hu1Hui-Ching Chien2Tien-Yu Yi3Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, TaiwanDepartment of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan; Corresponding author.Materials and Electro-Optics Research Division, National Chung-Shan Institute of Science and Technology, Taoyuan 335009, TaiwanDepartment of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, TaiwanThe bi-functional activities of electrocatalysts for the oxygen reduction reaction (ORR) and discharge products decomposition in the typical organic electrolyte of rechargeable Li-O2 batteries are proposed to be effectively evaluated by cyclic voltammetry (CV) with varying the lower potential limit. The free-standing Ru-Sn oxides-decorated graphene nanowalls are employed as examples to demonstrate this interesting methodology. Both Ru-enriched and Sn-enriched Ru-Sn oxides (RTO73 and RTO37) show higher bi-functional activities than two mono-oxides and pure graphene from CV and confirmed by the charge–discharge results. The full cell performances such as rate capability, cycle life and charge–discharge voltage gaps can be correlated to the findings from CV.http://www.sciencedirect.com/science/article/pii/S138824812100093XBi-functional catalystsLi-O2 batteriesCyclic voltammetryRuthenium-tin dioxidesGraphene nanowalls |
| spellingShingle | Ting-Hsuan You Chi-Chang Hu Hui-Ching Chien Tien-Yu Yi A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example Electrochemistry Communications Bi-functional catalysts Li-O2 batteries Cyclic voltammetry Ruthenium-tin dioxides Graphene nanowalls |
| title | A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example |
| title_full | A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example |
| title_fullStr | A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example |
| title_full_unstemmed | A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example |
| title_short | A new methodology for evaluating the performances of electrocatalysts for rechargeable Li-O2 batteries: (Ru-Sn)O2@graphene nanowalls/Ti electrodes as an example |
| title_sort | new methodology for evaluating the performances of electrocatalysts for rechargeable li o2 batteries ru sn o2 graphene nanowalls ti electrodes as an example |
| topic | Bi-functional catalysts Li-O2 batteries Cyclic voltammetry Ruthenium-tin dioxides Graphene nanowalls |
| url | http://www.sciencedirect.com/science/article/pii/S138824812100093X |
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