An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage
Abstract Metal chalcogenides (MCs) have emerged as promising candidates for potassium ion battery (KIB) anode materials, yet the sluggish redox kinetics and notorious shuttle effect inescapability lead to inferior rate performance and poor cyclability. Herein, a P‐doped PbTe/MXene (P‐PbTe/MXene) sup...
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202503332 |
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| author | Zhongquan Wang Bangjun Wu Zhenping Qiu Qingguang Zeng Aruuhan Bayaguud Huirong Wang Zheng Liu Yiju Li Yelong Zhang |
| author_facet | Zhongquan Wang Bangjun Wu Zhenping Qiu Qingguang Zeng Aruuhan Bayaguud Huirong Wang Zheng Liu Yiju Li Yelong Zhang |
| author_sort | Zhongquan Wang |
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| description | Abstract Metal chalcogenides (MCs) have emerged as promising candidates for potassium ion battery (KIB) anode materials, yet the sluggish redox kinetics and notorious shuttle effect inescapability lead to inferior rate performance and poor cyclability. Herein, a P‐doped PbTe/MXene (P‐PbTe/MXene) superstructure is rationally constructed by decorating PbTe on MXene via a hydrothermal reaction and followed by bifunctional P‐doping, where P heteroatoms enter both PbTe and MXene lattice. The P‐PbTe/MXene anode shows enhanced reaction kinetics and suppressed shuttle effect of polytellurides due to the enhanced chemical adsorption stemming from the low energy gaps between the d‐band center and the p‐band center of P‐MXene. As a result, the P‐PbTe/MXene superstructure shows superior potassium storage properties, including high reversible capacity (289.1 mAh g−1 at 0.2 A g−1 after 200 cycles), outstanding rate performance (151.3 mAh g−1 at 20 A g−1), and ultrastable cyclability (180.1 mA h g−1 at 2.0 A g−1 after 2000 cycles) in half battery. Also, the P‐PbTe/MXene anode exhibits high energy density (186.0 Wh kg−1 at 0.1 A g−1) and excellent bending stability in soft‐package full cells. |
| format | Article |
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| institution | Matheson Library |
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| language | English |
| publishDate | 2025-07-01 |
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| spelling | doaj-art-1ca05a2adc484d5e8d2bbf1f314d1d0a2025-07-24T12:06:18ZengWileyAdvanced Science2198-38442025-07-011228n/an/a10.1002/advs.202503332An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion StorageZhongquan Wang0Bangjun Wu1Zhenping Qiu2Qingguang Zeng3Aruuhan Bayaguud4Huirong Wang5Zheng Liu6Yiju Li7Yelong Zhang8School of Renewable Energy Inner Mongolia University of Technology Ordos 017010 ChinaSchool of Applied Physics and Materials Wuyi University Jiangmen Guangdong 529020 ChinaSchool of Applied Physics and Materials Wuyi University Jiangmen Guangdong 529020 ChinaSchool of Applied Physics and Materials Wuyi University Jiangmen Guangdong 529020 ChinaInner Mongolia Key Laboratory of New Energy and Energy Storage Technology Hohhot 010051 ChinaSchool of Renewable Energy Inner Mongolia University of Technology Ordos 017010 ChinaSchool of Applied Physics and Materials Wuyi University Jiangmen Guangdong 529020 ChinaDepartment of Mechanical and Energy Engineering Southern University of Science and Technology Shenzhen 518055 ChinaSchool of Renewable Energy Inner Mongolia University of Technology Ordos 017010 ChinaAbstract Metal chalcogenides (MCs) have emerged as promising candidates for potassium ion battery (KIB) anode materials, yet the sluggish redox kinetics and notorious shuttle effect inescapability lead to inferior rate performance and poor cyclability. Herein, a P‐doped PbTe/MXene (P‐PbTe/MXene) superstructure is rationally constructed by decorating PbTe on MXene via a hydrothermal reaction and followed by bifunctional P‐doping, where P heteroatoms enter both PbTe and MXene lattice. The P‐PbTe/MXene anode shows enhanced reaction kinetics and suppressed shuttle effect of polytellurides due to the enhanced chemical adsorption stemming from the low energy gaps between the d‐band center and the p‐band center of P‐MXene. As a result, the P‐PbTe/MXene superstructure shows superior potassium storage properties, including high reversible capacity (289.1 mAh g−1 at 0.2 A g−1 after 200 cycles), outstanding rate performance (151.3 mAh g−1 at 20 A g−1), and ultrastable cyclability (180.1 mA h g−1 at 2.0 A g−1 after 2000 cycles) in half battery. Also, the P‐PbTe/MXene anode exhibits high energy density (186.0 Wh kg−1 at 0.1 A g−1) and excellent bending stability in soft‐package full cells.https://doi.org/10.1002/advs.202503332MXenePbTeP‐dopingpotassium‐ion batteriesshuttle effect |
| spellingShingle | Zhongquan Wang Bangjun Wu Zhenping Qiu Qingguang Zeng Aruuhan Bayaguud Huirong Wang Zheng Liu Yiju Li Yelong Zhang An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage Advanced Science MXene PbTe P‐doping potassium‐ion batteries shuttle effect |
| title | An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage |
| title_full | An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage |
| title_fullStr | An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage |
| title_full_unstemmed | An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage |
| title_short | An Enhanced “Trapping−Conversion” Function Enables Ultrastable Potassium Ion Storage |
| title_sort | enhanced trapping conversion function enables ultrastable potassium ion storage |
| topic | MXene PbTe P‐doping potassium‐ion batteries shuttle effect |
| url | https://doi.org/10.1002/advs.202503332 |
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