title: Large-Area Carbon Nanosheets Doped with Phosphorus: A High-Performance Anode Material for Sodium-Ion Batteries.
abstract: Large-area phosphorus-doped carbon nanosheets (P-CNSs) are first obtained from carbon dots (CDs) through self-assembly driving from thermal treatment with Na catalysis. This is the first time to realize the conversion from 0D CDs to 2D nanosheets doped with phosphorus. The sodium storage behavior of phosphorus-doped carbon material is also investigated for the first time. As anode material for sodium-ion batteries (SIBs), P-CNSs exhibit superb performances for electrochemical storage of sodium. When cycled at 0.1 A g-1, the P-CNSs electrode delivers a high reversible capacity of 328 mAh g-1, even at a high current density of 20 A g-1, a considerable capacity of 108 mAh g-1can still be maintained. Besides, this material also shows excellent cycling stability, at a current density of 5 A g-1, the reversible capacity can still reach 149 mAh g-1after 5000 cycles. This work will provide significant value for the development of both carbon materials and SIBs anode materials.
authors.affiliation: State Key Laboratory for Powder Metallurgy Central South University Changsha 410083 China; College of Chemistry and Chemical Engineering Central South University Changsha 410083 China.
authors.forename: Hongshuai
authors.initials: H
authors.lastname: Hou
authors.affiliation: Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China.
authors.forename: Lidong
authors.initials: L
authors.lastname: Shao
authors.affiliation: College of Chemistry and Chemical Engineering Central South University Changsha 410083 China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Chemistry and Chemical Engineering Central South University Changsha 410083 China.
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Zou
authors.affiliation: College of Chemistry and Chemical Engineering Central South University Changsha 410083 China.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: State Key Laboratory for Powder Metallurgy Central South University Changsha 410083 China; College of Chemistry and Chemical Engineering Central South University Changsha 410083 China.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Ji
keywords: anodes; carbon nanosheets; phosphorus‐doped; sodium‐ion batteries