Thermal Reductive Perforation of Graphene Cathode for High-Performance Aluminum-Ion Batteries
Article
Kong, Yueqi, Tang, Cheng, Huang, Xiaodan, Nanjundan, Ashok Kumar, Zou, Jin, Du, Aijun and Yu, Chengzhong. 2022. "Thermal Reductive Perforation of Graphene Cathode for High-Performance Aluminum-Ion Batteries." Advanced Functional Materials. 31 (17). https://doi.org/10.1002/adfm.202010569
Article Title | Thermal Reductive Perforation of Graphene Cathode for High-Performance Aluminum-Ion Batteries |
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ERA Journal ID | 1397 |
Article Category | Article |
Authors | Kong, Yueqi, Tang, Cheng, Huang, Xiaodan, Nanjundan, Ashok Kumar, Zou, Jin, Du, Aijun and Yu, Chengzhong |
Journal Title | Advanced Functional Materials |
Journal Citation | 31 (17) |
Article Number | 2010569 |
Number of Pages | 9 |
Year | 2022 |
Publisher | John Wiley & Sons |
Place of Publication | Germany |
ISSN | 1616-301X |
1616-3028 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/adfm.202010569 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/adfm.202010569 |
Abstract | Controlling the structure of graphene-based materials with improved ion intercalation and diffusivity is crucial for their applications, such as in aluminum-ion batteries (AIBs). Due to the large size of AlCl4− ions, graphene-based cathodes have specific capacities of ≈60 to 148 mAh g−1, limiting the development of AIBs. A thermal reductive perforation (TRP) strategy is presented, which converts three-layer graphene nanosheets to surface-perforated graphene materials under mild temperature (400 °C). The thermal decomposition of block copolymers used in the TRP process generates active radicals to deplete oxygen and create graphene fragments. The resultant material has a three-layer feature, in-plane nanopores, >50% expanded interlayer spacing, and a low oxygen content comparable to graphene annealed at a high temperature of ≈3000 °C. When applied as an AIB cathode, it delivers a reversible capacity of 197 mAh g−1 at a current density of 2 A g−1 and reaches 92.5% of the theoretical capacity predicted by density-functional theory simulations. |
Keywords | aluminum-ion batteries |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401605. Functional materials |
4016. Materials engineering | |
400804. Electrical energy storage | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Queensland University of Technology | |
East China Normal University, China |
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