Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries
Abstract The development of highly safe and low‐cost aqueous batteries is of great significance in the background of carbon neutrality. However, the practical deployment of aqueous batteries has been plagued due to their relatively low capacity and poor cycling stability. Herein, we propose unique c...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-02-01
|
| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.261 |
| _version_ | 1797903921788747776 |
|---|---|
| author | Yichun Wang Boya Wang Jinshu Zhang Dongliang Chao Jiangfeng Ni Liang Li |
| author_facet | Yichun Wang Boya Wang Jinshu Zhang Dongliang Chao Jiangfeng Ni Liang Li |
| author_sort | Yichun Wang |
| collection | DOAJ |
| description | Abstract The development of highly safe and low‐cost aqueous batteries is of great significance in the background of carbon neutrality. However, the practical deployment of aqueous batteries has been plagued due to their relatively low capacity and poor cycling stability. Herein, we propose unique conversion electrochemistry of copper selenides for robust and energetic aqueous charge storage. In situ X‐ray diffraction and operando Raman techniques reveal a reversible transformation from CuSe to Cu2Se through the intermediates of Cu3Se2 and Cu1.8Se. Such a conversion process activates the redox carrier of Cu2+ ion and delivers a remarkable rate capability of 285 mAh g−1 at 20 A g−1 and electrochemical durability up to 30,000 cycles. Furthermore, Cu2+ and H+ coinsertion chemistry is proposed to facilitate the conversion process. As a proof‐of‐concept, a hybrid aqueous pouch cell coupling CuSe//Zn is capable of affording maximum energy and power densities of 190 Wh kg–1 and 1366 W kg−1, respectively. |
| first_indexed | 2024-04-10T09:40:31Z |
| format | Article |
| id | doaj.art-1f92b5797ba34b708c72e33ffb8de229 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-04-10T09:40:31Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-1f92b5797ba34b708c72e33ffb8de2292023-02-17T11:14:35ZengWileyCarbon Energy2637-93682023-02-0152n/an/a10.1002/cey2.261Conversion electrochemistry of copper selenides for robust and energetic aqueous batteriesYichun Wang0Boya Wang1Jinshu Zhang2Dongliang Chao3Jiangfeng Ni4Liang Li5Jiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Center for Energy Conversion Materials and Physics (CECMP) Soochow University Suzhou Jiangsu ChinaLaboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials Fudan University Shanghai ChinaJiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Center for Energy Conversion Materials and Physics (CECMP) Soochow University Suzhou Jiangsu ChinaLaboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, School of Chemistry and Materials Fudan University Shanghai ChinaJiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Center for Energy Conversion Materials and Physics (CECMP) Soochow University Suzhou Jiangsu ChinaJiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Center for Energy Conversion Materials and Physics (CECMP) Soochow University Suzhou Jiangsu ChinaAbstract The development of highly safe and low‐cost aqueous batteries is of great significance in the background of carbon neutrality. However, the practical deployment of aqueous batteries has been plagued due to their relatively low capacity and poor cycling stability. Herein, we propose unique conversion electrochemistry of copper selenides for robust and energetic aqueous charge storage. In situ X‐ray diffraction and operando Raman techniques reveal a reversible transformation from CuSe to Cu2Se through the intermediates of Cu3Se2 and Cu1.8Se. Such a conversion process activates the redox carrier of Cu2+ ion and delivers a remarkable rate capability of 285 mAh g−1 at 20 A g−1 and electrochemical durability up to 30,000 cycles. Furthermore, Cu2+ and H+ coinsertion chemistry is proposed to facilitate the conversion process. As a proof‐of‐concept, a hybrid aqueous pouch cell coupling CuSe//Zn is capable of affording maximum energy and power densities of 190 Wh kg–1 and 1366 W kg−1, respectively.https://doi.org/10.1002/cey2.261aqueous batteryconversion electrochemistryCu‐ion batterySe‐based electrode |
| spellingShingle | Yichun Wang Boya Wang Jinshu Zhang Dongliang Chao Jiangfeng Ni Liang Li Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries Carbon Energy aqueous battery conversion electrochemistry Cu‐ion battery Se‐based electrode |
| title | Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| title_full | Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| title_fullStr | Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| title_full_unstemmed | Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| title_short | Conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| title_sort | conversion electrochemistry of copper selenides for robust and energetic aqueous batteries |
| topic | aqueous battery conversion electrochemistry Cu‐ion battery Se‐based electrode |
| url | https://doi.org/10.1002/cey2.261 |
| work_keys_str_mv | AT yichunwang conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries AT boyawang conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries AT jinshuzhang conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries AT dongliangchao conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries AT jiangfengni conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries AT liangli conversionelectrochemistryofcopperselenidesforrobustandenergeticaqueousbatteries |