Ali, Ghulam Mehmood, Asad Ha, Heung Yong Kim, Jaehoon Chung, Kyung Yoon 2024-01-20T02:31:18Z 2024-01-20T02:31:18Z 2021-09-05 2017-01-18 2045-2322 https://pubs.kist.re.kr/handle/201004/123188 We report the feasibility of using reduced graphene oxide (RGO) as a cost-effective and high performance cathode material for sodium-ion batteries (SIBs). Graphene oxide is synthesized by a modified Hummers' method and reduced using a solid-state microwave irradiation method. The RGO electrode delivers an exceptionally stable discharge capacity of 240 mAh g(-1) with a stable long cycling up to 1000 cycles. A discharge capacity of 134 mAh g(-1) is obtained at a high current density of 600 mA g(-1), and the electrode recovers a capacity of 230 mAh g(-1) when the current density is reset to 15 mA g(-1) after deep cycling, thus demonstrating the excellent stability of the electrode with sodium de/intercalation. The successful use of the RGO electrode demonstrated in this study is expected to facilitate the emergence of low-cost and sustainable carbon-based materials for SIB cathode applications. English NATURE PUBLISHING GROUP ELECTRONIC-STRUCTURE RECOVERY RAY-ABSORPTION-SPECTROSCOPY ANODE MATERIAL CHEMICAL-REDUCTION POSITIVE ELECTRODE SUPERIOR ANODE CARBON PERFORMANCE NANOSHEETS STABILITY Reduced graphene oxide as a stable and high-capacity cathode material for Na-ion batteries Article 10.1038/srep40910 1 SCIENTIFIC REPORTS, v.7 SCIENTIFIC REPORTS 7 scie scopus 000392151300001 2-s2.0-85010065548 Multidisciplinary Sciences Science & Technology - Other Topics Article ELECTRONIC-STRUCTURE RECOVERY RAY-ABSORPTION-SPECTROSCOPY ANODE MATERIAL CHEMICAL-REDUCTION POSITIVE ELECTRODE SUPERIOR ANODE CARBON PERFORMANCE NANOSHEETS STABILITY Reduced graphene oxide cathode Na-ion batteries high capacity RGO