| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 |
18권 2호 |
| 발표분야 |
에너지저장변환-포스터 |
| 제목 |
Facile Li+ ion transport and superior thermal stability of polydopamine-encapsulated graphite anodes for Li-ion batteries |
| 초록 |
Polydopamine (PD) coating is demonstrated to enhance Li+ ion transport kinetics and thermal stability of graphite anode for Li-ion batteries. Commercial grade graphite electrodes are successfully coated with nano-scale PD layer by simple dip-coating process. PD-coated graphite electrodes exhibit increased initial reversible capacity and improved rate capability at both lithiation and de-lithiation processes. The superior power performance of PD-coated graphite is ascribed to the reduced activation energy for the interfacial Li+ transfer reaction, as evidenced by the electrochemical impedance spectroscopy (EIS) measurements. In addition, PD-coated graphite show improved cycle performance at 60 oC, which is attributed to suppressed thermal degradation of the graphite/electrolyte interface by PD coating. |
| 저자 |
박성효, 이호춘
|
| 소속 |
대구경북과학기술원 |
| 키워드 |
polydopamine; dip coating; activation energy; thermal degradation
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| E-Mail |
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