Defect‐Engineered Graphene for High‐Energy‐ and High‐Power‐Density Supercapacitor Devices. Issue 33 (14th June 2016)

• Record Type: Journal Article
• Authors: Zhu, Jingyi; Childress, Anthony S.; Karakaya, Mehmet; Dandeliya, Sushmita; Srivastava, Anurag; Lin, Ye; Rao, Apparao M.; Podila, Ramakrishna
• Is Part Of: Advanced materials. Volume 28:Issue 33(2016)
• Page Start: 7185
• Page End: 7192
• Publication Date: 2016-06-14
• Subjects: defect‐engineering -- graphene -- high energy density -- high power density -- quantum capacitance; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201602028
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : Defects are often written off as performance limiters . Contrary to this notion, it is shown that controlling the defect configuration in graphene is critical to overcome a fundamental limitation posed by quantum capacitance and opens new channels for ion diffusion. Defect‐engineered graphene flexible pouch capacitors with energy densities of 500% higher than the state‐of‐the‐art supercapacitors are demonstrated.