A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries
During the discharge of Na–O<sub>2</sub> batteries, O<sub>2</sub> is reduced and combines with Na<sup>+</sup> to form an insulating solid sodium oxide on the cathode, which severely hinders the mass transfer path, resulting in high polarization voltage, low energy...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Batteries |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2313-0105/8/11/227 |
| _version_ | 1797469071831203840 |
|---|---|
| author | Qin-yin Shen Jin-ling Ma Ming-lu Li Wei He Ying-yue Tan Peng-yu Zhou Yu Wang |
| author_facet | Qin-yin Shen Jin-ling Ma Ming-lu Li Wei He Ying-yue Tan Peng-yu Zhou Yu Wang |
| author_sort | Qin-yin Shen |
| collection | DOAJ |
| description | During the discharge of Na–O<sub>2</sub> batteries, O<sub>2</sub> is reduced and combines with Na<sup>+</sup> to form an insulating solid sodium oxide on the cathode, which severely hinders the mass transfer path, resulting in high polarization voltage, low energy efficiency, and short battery life. Hereby, we proposed a novel illumination-assisted Na–O<sub>2</sub> battery in which bismuth vanadate (BiVO<sub>4</sub>) with few defects and high surface areas was used as the catalyst. It showed that the charge overpotential under photo assistance reduced by 1.11 V compared with that of the dark state one. Additionally, the insolating sodium oxide discharge products were completely decomposed, which was the key to running Na–O<sub>2</sub> batteries over 200 cycles with a charge potential of no more than 3.65 V, while its counterpart (under dark condition) at 200 cycles had the charge potential higher than 4.25 V. The experiment combined with theoretical calculation shows that few defects, high surface areas, the altered electron transfer kinetics, and the low energy gap and low oxygen absorption energy of the (040) crystal face of monoclinic BiVO<sub>4</sub> play an important role in catalyzing oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). |
| first_indexed | 2024-03-09T19:16:15Z |
| format | Article |
| id | doaj.art-8b2c22f54b1849008cf5257cff2782f6 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-09T19:16:15Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-8b2c22f54b1849008cf5257cff2782f62023-11-24T03:45:11ZengMDPI AGBatteries2313-01052022-11-0181122710.3390/batteries8110227A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> BatteriesQin-yin Shen0Jin-ling Ma1Ming-lu Li2Wei He3Ying-yue Tan4Peng-yu Zhou5Yu Wang6State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, ChinaDuring the discharge of Na–O<sub>2</sub> batteries, O<sub>2</sub> is reduced and combines with Na<sup>+</sup> to form an insulating solid sodium oxide on the cathode, which severely hinders the mass transfer path, resulting in high polarization voltage, low energy efficiency, and short battery life. Hereby, we proposed a novel illumination-assisted Na–O<sub>2</sub> battery in which bismuth vanadate (BiVO<sub>4</sub>) with few defects and high surface areas was used as the catalyst. It showed that the charge overpotential under photo assistance reduced by 1.11 V compared with that of the dark state one. Additionally, the insolating sodium oxide discharge products were completely decomposed, which was the key to running Na–O<sub>2</sub> batteries over 200 cycles with a charge potential of no more than 3.65 V, while its counterpart (under dark condition) at 200 cycles had the charge potential higher than 4.25 V. The experiment combined with theoretical calculation shows that few defects, high surface areas, the altered electron transfer kinetics, and the low energy gap and low oxygen absorption energy of the (040) crystal face of monoclinic BiVO<sub>4</sub> play an important role in catalyzing oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).https://www.mdpi.com/2313-0105/8/11/227Na–O<sub>2</sub> batteriesBiVO<sub>4</sub> photocatalystphoto-assistancelow overpotentialfast electron transfer |
| spellingShingle | Qin-yin Shen Jin-ling Ma Ming-lu Li Wei He Ying-yue Tan Peng-yu Zhou Yu Wang A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries Batteries Na–O<sub>2</sub> batteries BiVO<sub>4</sub> photocatalyst photo-assistance low overpotential fast electron transfer |
| title | A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries |
| title_full | A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries |
| title_fullStr | A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries |
| title_full_unstemmed | A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries |
| title_short | A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O<sub>2</sub> Batteries |
| title_sort | solid redox mediator analog as a highly efficient catalyst for na o sub 2 sub batteries |
| topic | Na–O<sub>2</sub> batteries BiVO<sub>4</sub> photocatalyst photo-assistance low overpotential fast electron transfer |
| url | https://www.mdpi.com/2313-0105/8/11/227 |
| work_keys_str_mv | AT qinyinshen asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT jinlingma asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT mingluli asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT weihe asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT yingyuetan asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT pengyuzhou asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT yuwang asolidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT qinyinshen solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT jinlingma solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT mingluli solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT weihe solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT yingyuetan solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT pengyuzhou solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries AT yuwang solidredoxmediatoranalogasahighlyefficientcatalystfornaosub2subbatteries |