Journal
DALTON TRANSACTIONS
Volume 47, Issue 3, Pages 852-858Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt04094f
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Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20174010201160]
- Nano-Material Fundamental Technology Development through National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016M3A7B4909370]
- National Research Foundation of Korea [2016M3A7B4909370] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A new innovative electrode material (Fe-P800) consisting of a metal complex anchored on carbon via the utilization of iron-porphyrin conjugated microporous polymer (Fe-CMP) was prepared after pyrolyzing at 800 degrees C. The usage of the polymer with iron-porphyrin repeating units maximized the possible formation of Fe-N-x coordination within the bulk of the sample while the thermal treatment rendered the carbon framework to form a distinct arrangement between metal, nitrogen and carbon with a high surface area of 450 m(2) g(-1). The formation of the M-N-C bond, confirmed through XPS analysis, established a direct interaction between metal and carbon material. Thus, an indisputable synergistic effect was observed leading to a high capacitance of 182 F g(-1) at a current density of 1 A g(-1) despite its low metal loading of similar to 1%. It also exhibited a highly robust cycling stability of similar to 100% capacitance retention even after 5000 cycles (10 A g(-1)). In this study, a new mechanism was proposed wherein the metal (iron) center features an electron access point via its highly reversible redox reactivity, providing a shuttle effect for charge transfer to the conductive graphitic carbon matrix.
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