Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation
Abstract Manganese‐based oxides are promising cathode materials for aqueous zinc ion batteries (AZIBs) while suffering from poor reaction kinetics and structure collapse, resulting in inferior rate capability and cycling stability. Herein, an efficient crystal and surface engineering strategy is pro...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Carbon Neutralization |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cnl2.37 |
| _version_ | 1797829191753793536 |
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| author | Xin Shi Xinyue Liu Enze Wang Xianshuo Cao Yanxia Yu Xiaoning Cheng Xihong Lu |
| author_facet | Xin Shi Xinyue Liu Enze Wang Xianshuo Cao Yanxia Yu Xiaoning Cheng Xihong Lu |
| author_sort | Xin Shi |
| collection | DOAJ |
| description | Abstract Manganese‐based oxides are promising cathode materials for aqueous zinc ion batteries (AZIBs) while suffering from poor reaction kinetics and structure collapse, resulting in inferior rate capability and cycling stability. Herein, an efficient crystal and surface engineering strategy is proposed to enhance the electron transfer ability of amorphous MnO2 and prevent its structure deformation during the Zn ion storage process. With the synergetic effect of poly(3,4‐ethylenedioxythiophene) (PEDOT) coating and Co‐doping, the Zn//PEDOT@Co‐MnO2 (PCMO) batteries show a high capacity of 298.9 mAh g−1 at the current density of 1 A g−1, a superior rate capability of 50.2% capacity retention at 10 A g−1, and outstanding cycling stability of 92.3% capacity retention after 1000 continuous cycles, significantly surpassing Zn//MnO2 (MO) and Zn//Co‐MnO2 (CMO) batteries in all aspects. Moreover, the peak energy density based on the mass of PCMO can reach 375 Wh kg−1 at a power density of 1.25 kW kg−1, which is better than most recently reported aqueous energy storage devices, including AZIBs, supercapacitors, lead‐acid batteries, and nickel‐based alkaline batteries. This work provides valuable information for designing advanced high‐performance Mn‐based cathodes for AZIBs. |
| first_indexed | 2024-04-09T13:16:27Z |
| format | Article |
| id | doaj.art-34d9bbeabb15493db8fbb07f9ecbe4c5 |
| institution | Directory Open Access Journal |
| issn | 2769-3325 |
| language | English |
| last_indexed | 2024-04-09T13:16:27Z |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Neutralization |
| spelling | doaj.art-34d9bbeabb15493db8fbb07f9ecbe4c52023-05-11T17:25:25ZengWileyCarbon Neutralization2769-33252023-01-0121283610.1002/cnl2.37Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulationXin Shi0Xinyue Liu1Enze Wang2Xianshuo Cao3Yanxia Yu4Xiaoning Cheng5Xihong Lu6The Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaThe Key Lab of Low‐Carbon Chemistry & Energy Conservation of Guangdong Province, Instrumental Analysis and Research Centre, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaAbstract Manganese‐based oxides are promising cathode materials for aqueous zinc ion batteries (AZIBs) while suffering from poor reaction kinetics and structure collapse, resulting in inferior rate capability and cycling stability. Herein, an efficient crystal and surface engineering strategy is proposed to enhance the electron transfer ability of amorphous MnO2 and prevent its structure deformation during the Zn ion storage process. With the synergetic effect of poly(3,4‐ethylenedioxythiophene) (PEDOT) coating and Co‐doping, the Zn//PEDOT@Co‐MnO2 (PCMO) batteries show a high capacity of 298.9 mAh g−1 at the current density of 1 A g−1, a superior rate capability of 50.2% capacity retention at 10 A g−1, and outstanding cycling stability of 92.3% capacity retention after 1000 continuous cycles, significantly surpassing Zn//MnO2 (MO) and Zn//Co‐MnO2 (CMO) batteries in all aspects. Moreover, the peak energy density based on the mass of PCMO can reach 375 Wh kg−1 at a power density of 1.25 kW kg−1, which is better than most recently reported aqueous energy storage devices, including AZIBs, supercapacitors, lead‐acid batteries, and nickel‐based alkaline batteries. This work provides valuable information for designing advanced high‐performance Mn‐based cathodes for AZIBs.https://doi.org/10.1002/cnl2.37amorphous MnO2aqueous Zn ion batteriesheteroatom dopingsurface engineering |
| spellingShingle | Xin Shi Xinyue Liu Enze Wang Xianshuo Cao Yanxia Yu Xiaoning Cheng Xihong Lu Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation Carbon Neutralization amorphous MnO2 aqueous Zn ion batteries heteroatom doping surface engineering |
| title | Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation |
| title_full | Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation |
| title_fullStr | Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation |
| title_full_unstemmed | Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation |
| title_short | Boosting the Zn ion storage ability of amorphous MnO2 via surface engineering and valence modulation |
| title_sort | boosting the zn ion storage ability of amorphous mno2 via surface engineering and valence modulation |
| topic | amorphous MnO2 aqueous Zn ion batteries heteroatom doping surface engineering |
| url | https://doi.org/10.1002/cnl2.37 |
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