A Biodegradable Polydopamine-Derived Electrode Material for High-Capacity and Long-Life Lithium-Ion and Sodium-Ion Batteries

Angew Chem Int Ed Engl. 2016 Aug 26;55(36):10662-6. doi: 10.1002/anie.201604519. Epub 2016 Aug 3.

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.

Keywords: electrochemistry; lithium-ion batteries; organic electrodes; polydopamine; sodium-ion batteries.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electric Conductivity
  • Electric Power Supplies*
  • Electrodes
  • Equipment Design
  • Indoles / chemistry*
  • Ions / chemistry
  • Lithium / chemistry*
  • Models, Molecular
  • Oxidation-Reduction
  • Polymers / chemistry*
  • Sodium / chemistry*

Substances

  • Indoles
  • Ions
  • Polymers
  • polydopamine
  • Lithium
  • Sodium