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Abstract
Graphene is a unique attractive material owing to its characteristic structure and excellent properties. To improve the preparation efficiency of graphene, reduce defects and costs, and meet the growing market demand, it is crucial to explore the improved and innovative production methods and process for graphene. This review summarizes recent advanced graphene synthesis methods including “bottom-up” and “top-down” processes, and their influence on the structure, cost, and preparation efficiency of graphene, as well as its peeling mechanism. The viability and practicality of preparing graphene using polymers peeling flake graphite or graphite filling polymer was discussed. Based on the comparative study, it is potential to mass produce graphene with large size and high quality using the viscoelasticity of polymers and their affinity to the graphite surface.
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Patil R, Phadatare M, Blomquist N, Örtegren J, Hummelgård M, Meshram J, Dubal D, Olin H. Highly Stable Cycling of Silicon-Nanographite Aerogel-Based Anode for Lithium-Ion Batteries. ACS OMEGA 2021; 6:6600-6606. [PMID: 33748572 PMCID: PMC7970491 DOI: 10.1021/acsomega.0c05214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/18/2021] [Indexed: 05/23/2023]
Abstract
Silicon anodes are considered as promising electrode materials for next-generation high capacity lithium-ion batteries (LIBs). However, the capacity fading due to the large volume changes (∼300%) of silicon particles during the charge-discharge cycles is still a bottleneck. The volume changes of silicon lead to a fracture of the silicon particles, resulting in recurrent formation of a solid electrolyte interface (SEI) layer, leading to poor capacity retention and short cycle life. Nanometer-scaled silicon particles are the favorable anode material to reduce some of the problems related to the volume changes, but problems related to SEI layer formation still need to be addressed. Herein, we address these issues by developing a composite anode material comprising silicon nanoparticles and nanographite. The method developed is simple, cost-efficient, and based on an aerogel process. The electrodes produced by this aerogel fabrication route formed a stable SEI layer and showed high specific capacity and improved cyclability even at high current rates. The capacity retentions were 92 and 72% of the initial specific capacity at the 171st and the 500th cycle, respectively.
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Affiliation(s)
- Rohan Patil
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
| | - Manisha Phadatare
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
| | - Nicklas Blomquist
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
| | - Jonas Örtegren
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
| | - Magnus Hummelgård
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
| | - Jagruti Meshram
- Centre
for Interdisciplinary Research, D.Y. Patil
Education Society (Deemed University), Kolhapur, Maharashtra 416006, India
| | - Deepak Dubal
- Centre
for Materials Science, Queensland University
of Technology (QUT), 2 George Street, Brisbane 4000, Australia
- School
of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane 4000, Australia
| | - Håkan Olin
- Department
of Natural Sciences, Mid Sweden University, Sundsvall 852 30, Sweden
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Phadatare M, Patil R, Blomquist N, Forsberg S, Örtegren J, Hummelgård M, Meshram J, Hernández G, Brandell D, Leifer K, Sathyanath SKM, Olin H. Silicon-Nanographite Aerogel-Based Anodes for High Performance Lithium Ion Batteries. Sci Rep 2019; 9:14621. [PMID: 31601920 PMCID: PMC6787263 DOI: 10.1038/s41598-019-51087-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 09/23/2019] [Indexed: 02/07/2023] Open
Abstract
To increase the energy storage density of lithium-ion batteries, silicon anodes have been explored due to their high capacity. One of the main challenges for silicon anodes are large volume variations during the lithiation processes. Recently, several high-performance schemes have been demonstrated with increased life cycles utilizing nanomaterials such as nanoparticles, nanowires, and thin films. However, a method that allows the large-scale production of silicon anodes remains to be demonstrated. Herein, we address this question by suggesting new scalable nanomaterial-based anodes. Si nanoparticles were grown on nanographite flakes by aerogel fabrication route from Si powder and nanographite mixture using polyvinyl alcohol (PVA). This silicon-nanographite aerogel electrode has stable specific capacity even at high current rates and exhibit good cyclic stability. The specific capacity is 455 mAh g−1 for 200th cycles with a coulombic efficiency of 97% at a current density 100 mA g−1.
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Affiliation(s)
- Manisha Phadatare
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden. .,Centre for Interdisciplinary Research, D.Y. Patil Education Society (Deemed University), Kolhapur, 416 006, Maharashtra, India.
| | - Rohan Patil
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden.
| | - Nicklas Blomquist
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden
| | - Sven Forsberg
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden
| | - Jonas Örtegren
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden
| | - Magnus Hummelgård
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden
| | - Jagruti Meshram
- Centre for Interdisciplinary Research, D.Y. Patil Education Society (Deemed University), Kolhapur, 416 006, Maharashtra, India
| | - Guiomar Hernández
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, SE-751 21, Uppsala, Sweden
| | - Daniel Brandell
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, SE-751 21, Uppsala, Sweden
| | - Klaus Leifer
- Electron Microscopy and Nano-Engineering, Applied Materials Science, Department of Engineering Sciences, Uppsala University, Box 534, 75121, Uppsala, Sweden
| | - Sharath Kumar Manjeshwar Sathyanath
- Electron Microscopy and Nano-Engineering, Applied Materials Science, Department of Engineering Sciences, Uppsala University, Box 534, 75121, Uppsala, Sweden
| | - Håkan Olin
- Department of Natural Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden
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