A Biodegradable Polydopamine-Derived Electrode Material for High-Capacity and Long-Life Lithium-Ion and Sodium-Ion Batteries.
Angew Chem Int Ed Engl
; 55(36): 10662-6, 2016 08 26.
Article
em En
| MEDLINE
| ID: mdl-27485314
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 (1818â
mAh g(-1) for LIBs and 500â
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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Assunto principal:
Polímeros
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Fontes de Energia Elétrica
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Sódio
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Indóis
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Idioma:
En
Ano de publicação:
2016
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Article