High performance electrochemical capacitor materials focusing on nickel based materials
Bing Li, Ming Bo Zheng, Huai Guo Xue* and Huan Pang*
Inorg. Chem. Front., 2015, Accepted Manuscript
DOI:  10.1039/C5QI00187K  
Received 01 Oct 2015, Accepted 11 Nov 2015, First published online 12 Nov 2015

http://pubs.rsc.org/en/content/articlelanding/2015/qi/c5qi00187k#!divAbstract

Abstract：

Of the two major capacitance contributing to the electrochemical storage devices, pseudo-capacitance which results from the reversible faradaic reactions can be much higher than the electric double layer capacitance.  Transition metal compounds are emerging electrode materials for pseudo-capacitors due to their multiple oxidation states and different ions. As one of the most well-known electroactive inorganic materials, nickel based materials are being developed for this purpose. Nickel based materials have been intensively investigated and evaluated as potential electrode materials for pseudocapacitors due to their thermal stability and chemical stability, high theoretical specific capacity, low price and environmentalfriendliness. A variety of synthetic methods such as hydrothermal/solvothermal methods, solgel, electrodeposition, and spray deposition method have been successfully applied to prepare nickel based compounds and composite materials. In this review, comprehensively summarizes and evaluates have been given out to show the recent progress. And we introduce the nickel based compounds and composites electrode materials for supercapacitors via synthesis methods, the electrochemical performances of the electrode materials and the devices.