title: Sodium-Doped Mesoporous Ni2P2O7 Hexagonal Tablets for High-Performance Flexible All-Solid-State Hybrid Supercapacitors.
abstract: A simple hydrothermal method has been developed to prepare hexagonal tablet precursors, which are then transformed into porous sodium-doped Ni2P2O7 hexagonal tablets by a simple calcination method. The obtained samples were evaluated as electrode materials for supercapacitors. Electrochemical measurements show that the electrode based on the porous sodium-doped Ni2P2O7 hexagonal tablets exhibits a specific capacitance of 557.7 F g(-1) at a current density of 1.2 A g(-1) . Furthermore, the porous sodium-doped Ni2P2O7 hexagonal tablets were successfully used to construct flexible solid-state hybrid supercapacitors. The device is highly flexible and achieves a maximum energy density of 23.4 Wh kg(-1) and a good cycling stability after 5000 cycles, which confirms that the porous sodium-doped Ni2P2 O7 hexagonal tablets are promising active materials for flexible supercapacitors.
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
authors.forename: Chengzhen
authors.initials: C
authors.lastname: Wei
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Cheng
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
authors.forename: Yazhou
authors.initials: Y
authors.lastname: Xu
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
authors.forename: Jindi
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China. huanpangchem@hotmail.com.|College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, Jiangsu, China. huanpangchem@hotmail.com.
authors.forename: Huan
authors.initials: H
authors.lastname: Pang
keywords: electrochemistry; energy storage; hydrothermal synthesis; mesoporous materials; solid-state structures