A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability
Na-O2 and K-O2 batteries have attracted extensive attention in recent years. However, the parasitic reactions involving the discharge product of NaO2 or K anode with electrolytes and the severe Na or K dendrites plague their rechargeability and cycle stability. Herein, we report a hybrid Na//K+-cont...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2019-01-01
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| Series: | Research |
| Online Access: | http://dx.doi.org/10.1155/2019/6180615 |
| _version_ | 1797287342040416256 |
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| author | Zhuo Zhu Xiaomeng Shi Dongdong Zhu Liubin Wang Kaixiang Lei Fujun Li |
| author_facet | Zhuo Zhu Xiaomeng Shi Dongdong Zhu Liubin Wang Kaixiang Lei Fujun Li |
| author_sort | Zhuo Zhu |
| collection | DOAJ |
| description | Na-O2 and K-O2 batteries have attracted extensive attention in recent years. However, the parasitic reactions involving the discharge product of NaO2 or K anode with electrolytes and the severe Na or K dendrites plague their rechargeability and cycle stability. Herein, we report a hybrid Na//K+-containing electrolyte//O2 battery consisting of a Na anode, 1.0 M of potassium triflate in diglyme, and a porous carbon cathode. Upon discharging, KO2 is preferentially produced via oxygen reduction in the cathode with Na+ stripped from the Na anode, and reversely, the KO2 is electrochemically decomposed with Na+ plated back onto the anode. The new reaction pathway can circumvent the parasitic reactions involving instable NaO2 and active K anode, and alternatively, the good stability and conductivity of KO2 and stable Na stripping/plating in the presence of K+ enable the hybrid battery to exhibit an average discharge/charge voltage gap of 0.15 V, high Coulombic efficiency of >96%, and superior cycling stability of 120 cycles. This will pave a new pathway to promote metal-air batteries. |
| first_indexed | 2024-03-07T18:31:38Z |
| format | Article |
| id | doaj.art-0ca712b82ad7418fb25c9549294cb4dd |
| institution | Directory Open Access Journal |
| issn | 2639-5274 |
| language | English |
| last_indexed | 2024-03-07T18:31:38Z |
| publishDate | 2019-01-01 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | Article |
| series | Research |
| spelling | doaj.art-0ca712b82ad7418fb25c9549294cb4dd2024-03-02T05:58:48ZengAmerican Association for the Advancement of Science (AAAS)Research2639-52742019-01-01201910.1155/2019/6180615A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle StabilityZhuo Zhu0Xiaomeng Shi1Dongdong Zhu2Liubin Wang3Kaixiang Lei4Fujun Li5Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,ChinaNa-O2 and K-O2 batteries have attracted extensive attention in recent years. However, the parasitic reactions involving the discharge product of NaO2 or K anode with electrolytes and the severe Na or K dendrites plague their rechargeability and cycle stability. Herein, we report a hybrid Na//K+-containing electrolyte//O2 battery consisting of a Na anode, 1.0 M of potassium triflate in diglyme, and a porous carbon cathode. Upon discharging, KO2 is preferentially produced via oxygen reduction in the cathode with Na+ stripped from the Na anode, and reversely, the KO2 is electrochemically decomposed with Na+ plated back onto the anode. The new reaction pathway can circumvent the parasitic reactions involving instable NaO2 and active K anode, and alternatively, the good stability and conductivity of KO2 and stable Na stripping/plating in the presence of K+ enable the hybrid battery to exhibit an average discharge/charge voltage gap of 0.15 V, high Coulombic efficiency of >96%, and superior cycling stability of 120 cycles. This will pave a new pathway to promote metal-air batteries.http://dx.doi.org/10.1155/2019/6180615 |
| spellingShingle | Zhuo Zhu Xiaomeng Shi Dongdong Zhu Liubin Wang Kaixiang Lei Fujun Li A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability Research |
| title | A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability |
| title_full | A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability |
| title_fullStr | A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability |
| title_full_unstemmed | A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability |
| title_short | A Hybrid Na//K+-Containing Electrolyte//O2 Battery with High Rechargeability and Cycle Stability |
| title_sort | hybrid na k containing electrolyte o2 battery with high rechargeability and cycle stability |
| url | http://dx.doi.org/10.1155/2019/6180615 |
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