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Keywords = fast chargeable anode materials

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14 pages, 13870 KiB  
Article
Facile One-Pot Synthesis of Fe3O4 Nanoparticles Composited with Reduced Graphene Oxide as Fast-Chargeable Anode Material for Lithium-Ion Batteries
by Honggyu Seong, Taejung Jung, Sanghyeon Kim and Jaewon Choi
Materials 2024, 17(20), 5059; https://doi.org/10.3390/ma17205059 - 17 Oct 2024
Cited by 2 | Viewed by 1808
Abstract
To address the rapidly growing demand for high performance of lithium-ion batteries (LIBs), the development of high-capacity anode materials should focus on the practical perspective of a facile synthetic process. In this work, iron oxide nanoparticles (Fe3O4 NPs) in situ [...] Read more.
To address the rapidly growing demand for high performance of lithium-ion batteries (LIBs), the development of high-capacity anode materials should focus on the practical perspective of a facile synthetic process. In this work, iron oxide nanoparticles (Fe3O4 NPs) in situ grown on the surface of reduced graphene oxide (rGO), denoted as Fe3O4 NPs@rGO, were prepared through a facile one-pot synthesis under the wet-colloidal conditions. The synthesized Fe3O4 NPs showed that uniform Fe3O4 NPs, with a size of around 9 nm, were distributed on the rGO surfaces. When applied as an anode material for LIBs, the Fe3O4 NPs@rGO anode revealed a high reversible capacity of 1191 mAh g−1 at 1.0 A g−1 after 200 cycles. It also exhibited excellent rate performance, achieving 608 mAh g−1 at a current density of 5.0 A g−1 over 500 cycles, with improved electronic and ionic conductivities due to the rGO template. This suggested that practically available anode materials can be developed through our one-pot synthesis by in situ growing the Fe3O4 NPs. Full article
(This article belongs to the Special Issue Advanced Anode Materials for Alkali-Ion Batteries)
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10 pages, 2026 KiB  
Article
Pine-Fiber-Derived Carbon@MnO@rGO as Advanced Anodes for Improving Lithium Storage Properties
by Qinyuan Huang, Bing Feng, Wentao Deng, Xiang Zhang, Gonggang Liu, Geng Su, Shanshan Chang, Jinbo Hu, Yuan Liu and Gang Xiao
Coatings 2022, 12(8), 1139; https://doi.org/10.3390/coatings12081139 - 7 Aug 2022
Cited by 1 | Viewed by 1671
Abstract
Fiber carbon (FC) is a potential fast-chargeable anode, which is attributable to the many nanopores in the cell wall. Herein, a strategy for an FC@MnO@rGO composite is proposed to combine pine-based FCs with suitable MnO nanoparticles, which are enfolded by the reduced graphene [...] Read more.
Fiber carbon (FC) is a potential fast-chargeable anode, which is attributable to the many nanopores in the cell wall. Herein, a strategy for an FC@MnO@rGO composite is proposed to combine pine-based FCs with suitable MnO nanoparticles, which are enfolded by the reduced graphene oxide (rGO). The magic conception is performed to join the advantages of conductive FC skeleton, high theoretical capacity of MnO and high flexibility and conductivity of rGO. Compared to FC, FC@MnO@rGO composite materials have presented superior lithium storage properties, exhibiting an initial discharge capacity of 1191.8 mAh g−1 and charge capacity of 643.5 mAh g−1. It is worth attention that the FC@MnO@rGO shows a reversible capacity of 304.2 mAh g−1 at a current density of 2 A g−1. Furthermore, it delivers an improved capacity retention of 67% at 400 mA g−1 over 400 cycles. Full article
(This article belongs to the Section Surface Engineering for Energy Harvesting, Conversion, and Storage)
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