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Rational Design of ...
Rational Design of Multinary Metal Chalcogenide Bi0.4Sb1.6Te3 Nanocrystals for Efficient Potassium Storage
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- Zhang, Longhai (författare)
- Anhui university
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- Liu, Jiatu (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Zhai, Yunming (författare)
- Anhui university
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- Zhang, Shilin (författare)
- University of Adelaide
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- Wang, Wei (författare)
- Anhui university
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- Li, Guanjie (författare)
- University of Adelaide
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- Sun, Liang (författare)
- University of Adelaide
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- Li, Hongbao (författare)
- Anhui university
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Qi, Shuo (författare)
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Chen, Shuangqiang (författare)
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- Wang, Rui (författare)
- Anhui university
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- Ma, Quanwei (författare)
- Anhui university
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- Just, Justus (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Zhang, Chaofeng (författare)
- Anhui university
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(creator_code:org_t)
- Engelska.
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Ingår i: Advanced Materials. - 0935-9648.
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Multinary metal chalcogenides hold considerable promise for high-energy potassium storage due to their numerous redox reactions. However, challenges arise from issues such as volume expansion and sluggish kinetics. Here, a design featuring a layered ternary Bi0.4Sb1.6Te3 anchored on graphene layers as a composite anode, where Bi atoms act as a lattice softening agent on Sb, is presented. Benefiting from the lattice arrangement in Bi0.4Sb1.6Te3 and structure, Bi0.4Sb1.6Te3/graphene exhibits a mitigated expansion of 28% during the potassiation/depotassiation process and demonstrates facile K+ ion transfer kinetics, enabling long-term durability of 500 cycles at various high rates. Operando synchrotron diffraction patterns and spectroscopies including in situ Raman, ex situ adsorption, and X-ray photoelectron reveal multiple conversion and alloying/dealloying reactions for potassium storage at the atomic level. In addition, both theoretical calculations and electrochemical examinations elucidate the K+ migration pathways and indicate a reduction in energy barriers within Bi0.4Sb1.6Te3/graphene, thereby suggesting enhanced diffusion kinetics for K+. These findings provide insight in the design of durable high-energy multinary tellurides for potassium storage.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- BiSbTe anode
- multinary metal chalcogenide
- potassium ion batteries
- synergetic effect
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Zhang, Longhai
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Liu, Jiatu
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Zhai, Yunming
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Zhang, Shilin
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Wang, Wei
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Li, Guanjie
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visa fler...
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Sun, Liang
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Li, Hongbao
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Qi, Shuo
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Chen, Shuangqian ...
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Wang, Rui
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Ma, Quanwei
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Just, Justus
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Zhang, Chaofeng
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visa färre...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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Advanced Materia ...
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Lunds universitet