Layered manganese-based metal–organic framework as a high capacity electrode material for supercapacitors. Issue 47 (7th June 2017)

• Record Type: Journal Article
• Authors: Wang, Xianmei; Liu, Xiuxiu; Rong, Hongren; Song, Yidan; Wen, Hao; Liu, Qi
• Is Part Of: RSC advances. Volume 7:Issue 47(2017)
• Page Start: 29611
• Page End: 29617
• Publication Date: 2017-06-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra04374k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The layered Mn-based metal–organic framework (Mn-LMOF) displayed good performance as an electrode material for supercapacitors. Abstract : For the development of supercapacitors with higher energy densities, metal–organic frameworks (MOFs), as electrode materials for supercapacitors, have attracted much attention. Herein, layered manganese-based MOF ([Mn(tfbdc)(4, 4′-bpy)(H2 O)2 ], Mn-LMOF; H2 tfbdc = 2, 3, 5, 6-tetrafluoroterephthalic acid, 4, 4′-bpy = 4, 4′-bipyridine) was synthesized by a simple solution reaction and evaluated as an electrode material for supercapacitors for the first time. The Mn-LMOF electrode showed a high specific capacitance, a good cycling stability and a improved rate capability. Its maximum specific capacitances were 1098 F g −1 for 1 M KOH and 1178 F g −1 for 1 M LiOH solutions at a current density of 1 A g −1 . The specific capacitance retention was maintained at 92.6% after 2000 cycles in 1 M KOH, slightly lower than that in 1 M LiOH. The excellent supercapacitive performance may be ascribed to the nature of Mn-LMOF, containing a layered structure and nano-sized particles.