| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
A Promising Monoclinic-Orthorhombic Na1.1Li2.0V2(PO4)3/C Composite Material by ion exchange for Na+/Li+ Hybrid-Ion Batteries |
| 초록 |
We report a new monoclinic-orthorhombic Na1.1Li2.0V2 (PO4)3/C (NLVP/C) composite cathode synthesized by soft ion exchange reaction from a mono-clinical LVP for application to a Na+/Li+ hybrid ion battery. High Resolution Synchrotron X-ray diffraction (XRD), and electrochemical data check the room temperature stabilization of the monoclinic-orthorhombic NLVP/C composite phase. Especially, we report application of monoclinic-orthorhombic NLVP/C composite as cathode in Sodium half-cell. This monoclinic-orthorhombic NLVP/C composite cathode delivered a discharge capacity of 115 mAh g−1 with an average discharge potential of 3.47 V. The in situ synchrotron XRD pattern was recorded during the initial electrochemical cycling, and from the results indicated a series of two phase transitions, confirming the structural stability of the NLVP/C composite cathode during the insertion and extraction of hybrid ions. In addition, the estimated average working potential and energy density at the initial cycle for the NLVP/C composite cathode (3.47 V vs Na/Na+ and 102.5 Wh kg−1) are higher compared with those of the combustion-synthesized rhombohedral Na3V2(PO4)3 (3.36 V vs Na/Na+ and 88.5 Wh kg−1) cathode. |
| 저자 |
Suyeong Lee, Sungjin Kim, Muhammad Hilmy Alfaruqi, Hyeok Kang, Balaji Sambandam, Jaekook Kim, Jang-Yeon Hwang
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| 소속 |
Chonnam National Univ. |
| 키워드 |
Sodium Secondary Battery |
| E-Mail |
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