The anion-intercalation chemistries of graphite have the potential to construct batteries with promising energy and power breakthroughs. Here, we report the use of an ultrathin, positively charged two-dimensional poly(pyridinium salt) membrane (C2DP) as the graphite electrode skin to overcome the critical durability problem. Large-area C2DP enables the conformal coating on the graphite electrode, remarkably alleviating the electrolyte. Meanwhile, the dense face-on oriented single crystals with ultrathin thickness and cationic backbones allow C2DP with high anion-transport capability and selectivity. Such desirable anion-transport properties of C2DP prevent the cation/solvent co-intercalation into the graphite electrode and suppress the consequent structure collapse. An impressive PF6−-intercalation durability is demonstrated for the C2DP-covered graphite electrode, with capacity retention of 92.8% after 1000 cycles at 1 C and Coulombic efficiencies of > 99%. The feasibility of constructing artificial ion-regulating electrode skins with precisely customized two-dimensional polymers offers viable means to promote problematic battery chemistries.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:91559 |
| Date | 23 May 2024 |
| Creators | Sabaghi, Davood, Wang, Zhiyong, Bhauriyal, Preeti, Lu, Qiongqiong, Morag, Ahiud, Mikhailovia, Daria, Hashemi, Payam, Li, Dongqi, Neumann, Christof, Liao, Zhongquan, Dominic, Anna Maria, Shaygan Nia, Ali, Dong, Renhao, Zschech, Ehrenfried, Turchanin, Andrey, Heine, Thomas, Yu, Minghao, Feng, Xinliang |
| Publisher | Springer |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2041-1723, 760, 10.1038/s41467-023-36384-5, info:eu-repo/grantAgreement/Europäische Union/H2020 | SGA-RIA/881603//Graphene Flagship Core Project 3/GrapheneCore3, info:eu-repo/grantAgreement/Europäische Union/Horizon2020/101017821//multi-electron processes for light driven electrodes and electrolytes in conversion and storage of solar energy/LIGHT-CAP, info:eu-repo/grantAgreement/Sächsisches Staatsministerium für Wissenschaft und Kunst/M-ERA.NET/100478697//Synthesis and characterization of novel 2D hybrid materials for supercapacitors/HYSUCAP, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/SFB 1415: Chemie der synthetischen zweidimensionalen Materialien/417590517/ |
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