Sodium-Doped Mesoporous Ni2P2O7 Hexagonal Tablets for High-Performance Flexible All-Solid-State Hybrid Supercapacitors

Chengzhen Wei; Cheng Cheng; Shanshan Wang; Yazhou Xu; Jindi Wang; Huan Pang

doi:10.1002/asia.201500335

Sodium-Doped Mesoporous Ni2P2O7 Hexagonal Tablets for High-Performance Flexible All-Solid-State Hybrid Supercapacitors

Chem Asian J. 2015 Aug;10(8):1731-7. doi: 10.1002/asia.201500335. Epub 2015 Jun 26.

Authors

Chengzhen Wei¹, Cheng Cheng¹, Shanshan Wang¹, Yazhou Xu¹, Jindi Wang¹, Huan Pang^{2

3}

Affiliations

¹ College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
² College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China. huanpangchem@hotmail.com.
³ College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, Jiangsu, China. huanpangchem@hotmail.com.

PMID: 26045404
DOI: 10.1002/asia.201500335

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.

Keywords: electrochemistry; energy storage; hydrothermal synthesis; mesoporous materials; solid-state structures.