Bitumen-Derived Onion-Like Soft Carbon as High-Performance Potassium-Ion Battery Anode

Tan，Wen1,2; Wang，Lina1,3; Liu，Kun1,2; Lu，Zhouguang1,2; Yang，Fan4; Luo，Guangfu1,3; Xu，Zhenghe1,2,5

2022

10.1002/smll.202203494

Small   影响因子和分区

1613-6810

1613-6829

Potassium-ion batteries (PIBs) have been regarded as a competitive alternative for lithium-ion batteries, owing to the natural abundance, low cost, and similar rocking-chair working mechanism of potassium element. However, it is challenging to simultaneously prepare suitable potassium ion anode materials of low voltage plateau, high capacity, and long cycle life. In this work, onion-like soft carbon (OLSC) of high heteroatom content is prepared by using solvent-sensitive self-assembly properties of asphaltene molecules. The OLSC electrode exhibits a low voltage plateau because of a high degree of graphitization. Meanwhile, it possesses excellent cycling stability and rate capability due to the high stability of the onion-like structure and fast transport of potassium ions, the latter of which is caused by heteroatom-induced expanded interlayers as found by first-principle calculations. Compared with existing carbon materials, the OLSC synthesized in this study exhibits a high reversible capacity of 466 mAh g at 20 mA g, a reversible capacity of 222 mAh g and capacity retention of 95% after 1600 cycles at 1 A g. This work connects the nanostructure of carbon materials and electrochemical performance and provides new insights in improving carbon-based anodes for PIBs.

anode materials bitumen onion-like soft carbon potassium-ion batteries

SCI ; EI

英语

第一 ; 通讯

Leading Talents of Guangdong Province Program[2016LJ06C536] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001] ; Guangdong Provincial Key Laboratory of Computational Science and Material Design[2019B030301001] ; Shenzhen Science and Technology Innovation Committee[JCYJ20200109141412308] ; Introduced Innovative R&D Team of Guangdong[2017ZT07C062]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000846470000001

WILEY-V C H VERLAG GMBH

20223512667029

Anodes ; Bituminous materials ; Ions ; Lithium-ion batteries ; Potassium

Bituminous Materials:411 ; Alkali Metals:549.1 ; Electron Tubes:714.1 ; Chemical Products Generally:804

2-s2.0-85136690754

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development,Shenzhen,518055,China
3.Guangdong Provincial Key Laboratory of Computational Science and Material Design,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.College of New Materials and New Energies,Shenzhen Technology University,Shenzhen,518055,China
5.Advanced Materials Innovation Center,Jiaxing Research Institute of Southern University of Science and Technology,Jiaxing,314031,China

Tan，Wen,Wang，Lina,Liu，Kun,et al. Bitumen-Derived Onion-Like Soft Carbon as High-Performance Potassium-Ion Battery Anode[J]. Small,2022.

Tan，Wen.,Wang，Lina.,Liu，Kun.,Lu，Zhouguang.,Yang，Fan.,...&Xu，Zhenghe.(2022).Bitumen-Derived Onion-Like Soft Carbon as High-Performance Potassium-Ion Battery Anode.Small.

Tan，Wen,et al."Bitumen-Derived Onion-Like Soft Carbon as High-Performance Potassium-Ion Battery Anode".Small (2022).