Dopamine as a Novel Electrolyte Additive for High-Voltage Lithium-Ion Batteries
- Title
- Dopamine as a Novel Electrolyte Additive for High-Voltage Lithium-Ion Batteries
- Author
- 조국영
- Keywords
- dopamine; electrochemical polymerization; electrolyte additive; high-voltage; lithium-ion battery; MUSSEL-INSPIRED POLYDOPAMINE; TRIS(PENTAFLUOROPHENYL) BORANE; ELECTROCHEMICAL PERFORMANCE; MULTIFUNCTIONAL COATINGS; POLYETHYLENE SEPARATORS; SECONDARY BATTERIES; THERMAL-STABILITY; CATHODE MATERIALS; IMPROVE; LICOO2
- Issue Date
- 2016-08
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v. 8, No. 33, Page. 21366-21372
- Abstract
- Dopamine, which can be electrochemically oxidized to polydopamine on cathode surface, was introduced as an electrolyte additive for high-voltage lithium-ion batteries (LIBs). The addition of 0.1 wt % dopamine to the electrolyte led to the formation of a polydopamine-containing layer on the cathode, thereby resulting in suppression of the oxidative decomposition of the electrolyte during high-voltage operation (up to 4.5 V) of a LiNi1/3Co1/3Mn1/3O2/artificial graphite cell. The addition of dopamine to the electrolyte improved the capacity retention of the cell from 136 to 147 mAh g(-1) after 100 cycles at a rate of 1C and a cutoff voltage of 4.5 V, while the cycle performance and rate capability with a cutoff voltage of 4.3 V were comparable to those of the cell without dopamine. Further evidence of the positive impact of dopamine on high-voltage LIBs was the lower DC-IRs and AC impedances, as well as the retention of the cathode morphology even after operation at 4.5 V.
- URI
- https://pubs.acs.org/doi/abs/10.1021/acsami.6b06074https://repository.hanyang.ac.kr/handle/20.500.11754/102643
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.6b06074
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML