Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage
Earth‐abundant manganese (Mn) compounds have multifarious valence states that make Mn advantageous for electrochemical energy storage applications. Benefiting from the unity of opposites in redox chemistry, a novel aqueous all‐Mn energy storage device (AMESD) based on the redox chemistry of Mn2+ is...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-09-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202300077 |
| _version_ | 1797684999667843072 |
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| author | Baolong Sun Yunjian Chen Ni Wang Yang Wang Xingchen Xie Li Zhong Lixiang He Sridhar Komarneni Wencheng Hu |
| author_facet | Baolong Sun Yunjian Chen Ni Wang Yang Wang Xingchen Xie Li Zhong Lixiang He Sridhar Komarneni Wencheng Hu |
| author_sort | Baolong Sun |
| collection | DOAJ |
| description | Earth‐abundant manganese (Mn) compounds have multifarious valence states that make Mn advantageous for electrochemical energy storage applications. Benefiting from the unity of opposites in redox chemistry, a novel aqueous all‐Mn energy storage device (AMESD) based on the redox chemistry of Mn2+ is proposed, which is a simple‐structured battery that can be initially assembled by two bare carbon fiber cloths (CFCs) and the electrolyte. Moreover, the effects of electrolyte optimization and the modification of CFCs on the energy storage performance of the novel battery are discussed. The device based on N‐doped porous CFCs achieves the highest areal capacity of 1.46 mAh cm−2 (≈152.1 mAh g−1), along with an energy density of 1.10 mWh cm−2 and a power density of 9.66 mW cm−2. More impressively, the charge–discharge cycles at a capacity of 0.33 mWh cm−2 are performed 40 000 times and it can maintain a high‐capacity retention rate of 93.5%. Even at a low current of 1 mA cm−2, the capacity retention rate after 100 cycles is maintained to 86%. Herein, a new option for low‐cost, ultrastable aqueous battery design is provided and the possibility of Mn‐based anodes for energy storage applications is explored. |
| first_indexed | 2024-03-12T00:38:56Z |
| format | Article |
| id | doaj.art-36066f6c29ae4fe6b0524e754d93cb92 |
| institution | Directory Open Access Journal |
| issn | 2688-4062 |
| language | English |
| last_indexed | 2024-03-12T00:38:56Z |
| publishDate | 2023-09-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj.art-36066f6c29ae4fe6b0524e754d93cb922023-09-15T09:17:18ZengWiley-VCHSmall Structures2688-40622023-09-0149n/an/a10.1002/sstr.202300077Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy StorageBaolong Sun0Yunjian Chen1Ni Wang2Yang Wang3Xingchen Xie4Li Zhong5Lixiang He6Sridhar Komarneni7Wencheng Hu8School of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 P. R. ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaMaterials Research Institute and Department of Ecosystem Science and Management 204 Energy and the Environment Laboratory The Pennsylvania State University University Park PA 16802 USASchool of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 P. R. ChinaEarth‐abundant manganese (Mn) compounds have multifarious valence states that make Mn advantageous for electrochemical energy storage applications. Benefiting from the unity of opposites in redox chemistry, a novel aqueous all‐Mn energy storage device (AMESD) based on the redox chemistry of Mn2+ is proposed, which is a simple‐structured battery that can be initially assembled by two bare carbon fiber cloths (CFCs) and the electrolyte. Moreover, the effects of electrolyte optimization and the modification of CFCs on the energy storage performance of the novel battery are discussed. The device based on N‐doped porous CFCs achieves the highest areal capacity of 1.46 mAh cm−2 (≈152.1 mAh g−1), along with an energy density of 1.10 mWh cm−2 and a power density of 9.66 mW cm−2. More impressively, the charge–discharge cycles at a capacity of 0.33 mWh cm−2 are performed 40 000 times and it can maintain a high‐capacity retention rate of 93.5%. Even at a low current of 1 mA cm−2, the capacity retention rate after 100 cycles is maintained to 86%. Herein, a new option for low‐cost, ultrastable aqueous battery design is provided and the possibility of Mn‐based anodes for energy storage applications is explored.https://doi.org/10.1002/sstr.202300077all-Mn energy storagechemical conversion mechanismshigh energyN-doped porous carbon fiberssuperior cycle stability |
| spellingShingle | Baolong Sun Yunjian Chen Ni Wang Yang Wang Xingchen Xie Li Zhong Lixiang He Sridhar Komarneni Wencheng Hu Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage Small Structures all-Mn energy storage chemical conversion mechanisms high energy N-doped porous carbon fibers superior cycle stability |
| title | Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage |
| title_full | Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage |
| title_fullStr | Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage |
| title_full_unstemmed | Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage |
| title_short | Redox Chemistry of Mn2+ on N‐Doped Porous Carbon Fibers for High‐Performance Electrochemical Energy Storage |
| title_sort | redox chemistry of mn2 on n doped porous carbon fibers for high performance electrochemical energy storage |
| topic | all-Mn energy storage chemical conversion mechanisms high energy N-doped porous carbon fibers superior cycle stability |
| url | https://doi.org/10.1002/sstr.202300077 |
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