A Biodegradable Polydopamine‐Derived Electrode Material for High‐Capacity and Long‐Life Lithium‐Ion and Sodium‐Ion Batteries |
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| Authors: | Tao Sun Zong‐jun Li Heng‐guo Wang Di Bao Fan‐lu Meng Prof Xin‐bo Zhang |
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| Institution: | 1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P.R. China;2. University of Chinese Academy of Sciences, Beijing, P.R. China;3. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P.R. China;4. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, P.R. China |
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| Abstract: | Polydopamine (PDA), which is biodegradable and is derived from naturally occurring products, can be employed as an electrode material, wherein controllable partial oxidization plays a key role in balancing the proportion of redox‐active carbonyl groups and the structural stability and conductivity. Unexpectedly, the optimized PDA derivative endows lithium‐ion batteries (LIBs) or sodium‐ion batteries (SIBs) with superior electrochemical performances, including high capacities (1818 mAh g?1 for LIBs and 500 mAh g?1 for SIBs) and good stable cyclabilities (93 % capacity retention after 580 cycles for LIBs; 100 % capacity retention after 1024 cycles for SIBs), which are much better than those of their counterparts with conventional binders. |
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| Keywords: | electrochemistry lithium-ion batteries organic electrodes polydopamine sodium-ion batteries |
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