A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery
A comprehensive study on the hydroxyl multiwalled carbon nanotubes (hydroxyl MWCNTs) as catalysts in a positive reaction was performed to improve the efficiency of the vanadium redox flow battery (VRFB). The physicochemical properties of the hydroxyl MWCNT-modified electrode were characterized by us...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/3258342 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551896533958656 |
|---|---|
| author | Qiang Li Anyu Bai Zeqiang Qu Tianyu Zhang Jie Li Xiaochen Zhang Mingfu Yu Zhichao Xue Hong Sun |
| author_facet | Qiang Li Anyu Bai Zeqiang Qu Tianyu Zhang Jie Li Xiaochen Zhang Mingfu Yu Zhichao Xue Hong Sun |
| author_sort | Qiang Li |
| collection | DOAJ |
| description | A comprehensive study on the hydroxyl multiwalled carbon nanotubes (hydroxyl MWCNTs) as catalysts in a positive reaction was performed to improve the efficiency of the vanadium redox flow battery (VRFB). The physicochemical properties of the hydroxyl MWCNT-modified electrode were characterized by using a scanning electron microscope (SEM), conductivity measurement, Brunner–Emmet–Teller (BET) measurement, X-ray photoelectron spectroscopy (XPS) analysis, cyclic voltammetry (CV) tests, electrochemical impedance spectroscopy (EIS) analysis, and charge-discharge tests. The prepared composite electrode possesses a huge amount of oxygen-containing groups, high-specific surface area, high electrical conductivity, and high catalytic activity towards the VO2+/VO2+ reaction based on physicochemical characterization. The hydroxyl MWCNT-modified graphite felt (hydroxyl MWCNTs/GF) shows the best cell performance with the energy efficiency of 79.74% and remains in high stability after 50 cycles. The improved cell performance is probably ascribed to the increase in active sites, fast charge transfer, and mass transfer rate of the introduced hydroxyl MWCNTs. |
| format | Article |
| id | doaj-art-ac29249f23e7478ca541d5497c7c8666 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-ac29249f23e7478ca541d5497c7c86662025-02-03T06:00:16ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/32583423258342A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow BatteryQiang Li0Anyu Bai1Zeqiang Qu2Tianyu Zhang3Jie Li4Xiaochen Zhang5Mingfu Yu6Zhichao Xue7Hong Sun8School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Science, Shenyang Jianzhu University, Shenyang 110168, ChinaSchool of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaA comprehensive study on the hydroxyl multiwalled carbon nanotubes (hydroxyl MWCNTs) as catalysts in a positive reaction was performed to improve the efficiency of the vanadium redox flow battery (VRFB). The physicochemical properties of the hydroxyl MWCNT-modified electrode were characterized by using a scanning electron microscope (SEM), conductivity measurement, Brunner–Emmet–Teller (BET) measurement, X-ray photoelectron spectroscopy (XPS) analysis, cyclic voltammetry (CV) tests, electrochemical impedance spectroscopy (EIS) analysis, and charge-discharge tests. The prepared composite electrode possesses a huge amount of oxygen-containing groups, high-specific surface area, high electrical conductivity, and high catalytic activity towards the VO2+/VO2+ reaction based on physicochemical characterization. The hydroxyl MWCNT-modified graphite felt (hydroxyl MWCNTs/GF) shows the best cell performance with the energy efficiency of 79.74% and remains in high stability after 50 cycles. The improved cell performance is probably ascribed to the increase in active sites, fast charge transfer, and mass transfer rate of the introduced hydroxyl MWCNTs.http://dx.doi.org/10.1155/2019/3258342 |
| spellingShingle | Qiang Li Anyu Bai Zeqiang Qu Tianyu Zhang Jie Li Xiaochen Zhang Mingfu Yu Zhichao Xue Hong Sun A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery Journal of Chemistry |
| title | A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery |
| title_full | A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery |
| title_fullStr | A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery |
| title_full_unstemmed | A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery |
| title_short | A Comprehensive Study on Hydroxyl Multiwalled Carbon Nanotubes Used as Catalysts for VO2+/VO2+ Reaction in Vanadium Redox Flow Battery |
| title_sort | comprehensive study on hydroxyl multiwalled carbon nanotubes used as catalysts for vo2 vo2 reaction in vanadium redox flow battery |
| url | http://dx.doi.org/10.1155/2019/3258342 |
| work_keys_str_mv | AT qiangli acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT anyubai acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT zeqiangqu acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT tianyuzhang acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT jieli acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT xiaochenzhang acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT mingfuyu acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT zhichaoxue acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT hongsun acomprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT qiangli comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT anyubai comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT zeqiangqu comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT tianyuzhang comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT jieli comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT xiaochenzhang comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT mingfuyu comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT zhichaoxue comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery AT hongsun comprehensivestudyonhydroxylmultiwalledcarbonnanotubesusedascatalystsforvo2vo2reactioninvanadiumredoxflowbattery |