Multielectron‐Transfer‐based Rechargeable Energy Storage of Two‐Dimensional Coordination Frameworks with Non‐Innocent Ligands |
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| Authors: | Keisuke Wada Dr. Ken Sakaushi Prof. Dr. Sono Sasaki Prof. Dr. Hiroshi Nishihara |
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| Affiliation: | 1. Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan;2. Department of Chemistry, School of Science, The University of Tokyo, Tokyo, Japan;3. RIKEN SPring-8 Center, Sayo-gun, Hyogo, Japan;4. Global Research Center for Environment and Energy based on Nanomaterials Science, National Institute for Materials Science, Tsukuba, Ibaraki, Japan;5. Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Kyoto, Japan |
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| Abstract: | The metallically conductive bis(diimino)nickel framework (NiDI), an emerging class of metal–organic framework (MOF) analogues consisting of two‐dimensional (2D) coordination networks, was found to have an energy storage principle that uses both cation and anion insertion. This principle gives high energy led by a multielectron transfer reaction: Its specific capacity is one of the highest among MOF‐based cathode materials in rechargeable energy storage devices, with stable cycling performance up to 300 cycles. This mechanism was studied by a wide spectrum of electrochemical techniques combined with density‐functional calculations. This work shows that a rationally designed material system of conductive 2D coordination networks can be promising electrode materials for many types of energy devices. |
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| Keywords: | ambipolarity energy storage layered compounds metal– organic frameworks redox chemistry |
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