Enhanced electrochemical performance of peony flower-like carbon-coated γ- Ga2O3 nanosheets for lithium-ion battery anodes

• Published in: Journal of Ceramic Processing Research, 22(2) pp. 192 - 199
• Main Authors: Injun Jeon, Jin Hyun Hwang, Tae Gyun Kim, Linghong Yin, 이형우, Jong Pil Kim, Hyung Soo Ahn, 조채용
• Format: Journal Article
• Language: English
• Published: 세라믹연구소 01.04.2021
• Subjects: 재료공학
• ISSN: 1229-9162; 2672-152X
• DOI: 10.36410/jcpr.2021.22.2.192

Peony flower-like γ-Ga2O3 nanosheets (γ-Ga2O3 NSs) were synthesized and carbon layers were coated on their surfaces usinga simple hydrothermal process with subsequent carbonization. The γ-Ga2O3 NSs comprised ultrathin layers, which are tensof nanometers in thickness. The carbon-coated γ-Ga2O3 NS (γ-Ga2O3@C NS) electrode exhibited a specific capacity of 598mAh g−1 at 200 cycles, at a current density of 0.5 A g−1, higher than that of γ-Ga2O3 NSs (60 mAh g−1). Furthermore, a specificcapacity of 100 mAh g−1 at 5 A g−1 was achieved owing to the low charge transfer resistance through the carbon layers. Thisstudy suggests that two-dimensional γ-Ga2O3@C NSs with both large specific area and high charge carrier transport arepromising active materials for lithium-ion battery anodes with better electrochemical performance. KCI Citation Count: 0