title: Porous dimanganese trioxide microflowers derived from microcoordinations for flexible solid-state asymmetric supercapacitors.
abstract: Dimanganese trioxide microflowers are easily obtained from a Mn(ii) 8-hydroxyquinoline microcoordination after calcination in air. We also look into the possible formation mechanism of the flower-like morphology, and find that the reaction time affects the morphology of the coordination. Furthermore, the as-prepared porous Mn2O3 microflowers are made of many nanoplates which form many nanogaps and nanochannels. Interestingly, the assembled electrode based on the as-prepared porous Mn2O3 microflowers proves to be a high-performance electrode material for supercapacitors. The electrode shows a specific capacitance of 994 F g(-1), which can work well even after 4000 cycles at 0.75 A g(-1). More importantly, the porous Mn2O3 microflowers and activated carbons are assembled into a high-performance flexible solid-state asymmetric supercapacitor with a specific capacitance of 312.5 mF cm(-2). The cycle test shows that the device can offer 95.6% capacity of the initial capacitance at 2.0 mA cm(-2) after 5000 cycles with little decay. The maximum energy density of the device can achieve 6.56 mWh cm(-3) and the maximum power density can also achieve 283.5 mW cm(-3), which are among the best results for manganese based materials.
authors.affiliation: College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455002, China and Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, Jiangsu 210023, China. iamwylai@njupt.edu.cn and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Pang
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
authors.forename: Xinran
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, Jiangsu 210023, China. iamwylai@njupt.edu.cn.
authors.forename: Yizhou
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, Jiangsu 210023, China. iamwylai@njupt.edu.cn.
authors.forename: Qunxing
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, Jiangsu 210023, China. iamwylai@njupt.edu.cn and Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China. wei-huang@njtech.edu.cn.
authors.forename: Wen-Yong
authors.initials: WY
authors.lastname: Lai
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, Jiangsu 210023, China. iamwylai@njupt.edu.cn and Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China. wei-huang@njtech.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang