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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201802949
|2 doi
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|a eng
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| 100 |
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|a Wang, Gang
|e verfasserin
|4 aut
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| 245 |
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|a Polarity-Switchable Symmetric Graphite Batteries with High Energy and High Power Densities
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|c 2018
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 27.09.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Multifunctional batteries with enhanced safety performance have received considerable attention for their applications at extreme conditions. However, few batteries can endure a mix-up of battery polarity during charging, a common wrong operation of rechargeable batteries. Herein, a polarity-switchable battery based on the switchable intercalation feature of graphite is demonstrated. The unique redox-amphoteric intercalation behavior of graphite allows a reversible switching of graphite between anode and cathode, thus enabling polarity-switchable symmetric graphite batteries. The large potential gap between anion and cation intercalation delivers a high midpoint device voltage (≈average voltage) of ≈4.5 V. Further, both the graphite anode and cathode are kinetically activated during the polarity switching. Consequently, polarity-switchable symmetric graphite batteries exhibit a remarkable cycling stability (96% capacity retention after 500 cycles), a high power density of 8.66 kW kg-1 , and a high energy density of 227 Wh kg-1 (calculated based on the total weight of active materials in both anode and cathode), which are superior to other symmetric batteries and recently reported dual-graphite or dual-carbon batteries. This work will inspire the development of new multifunctional energy-storage devices based on novel materials and electrolyte systems
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|a Journal Article
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|a dual-graphite batteries
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|a dual-ion batteries
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|a multifunctional batteries
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|a polarity switchability
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1 |
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|a Wang, Faxing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Panpan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Jian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Tao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Müllen, Klaus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Xinliang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 39 vom: 15. Sept., Seite e1802949
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:30
|g year:2018
|g number:39
|g day:15
|g month:09
|g pages:e1802949
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|u http://dx.doi.org/10.1002/adma.201802949
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