| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 145850 | Chemical Engineering Journal | 2016 | 8 Pages |
•Free-standing graphene oxide/layered double hydroxide (LDH) films were fabricated by flow-directed assembly.•Mesoporous reduced graphene oxide (rGO)/LDH films formed after a reduction process.•Embedded LDH nanosheets act as mesopore-creating guest.•Flexible rGO/CoAl-LDH//rGO all-solid-state asymmetric SC demonstrates an excellent performance.
Two-dimensional graphene materials as supercapacitors electrode have attracted tremendous attention owing to their high surface area and exceptionally electrical conductivity, while it is still a great challenge to achieve desired mesoporous graphene electrodes as the easy aggregation of graphene nanosheets. Here we report the design and fabrication of mesoporous free-standing reduced graphene oxide (rGO)-based films by introducing layered double hydroxides (LDHs) nanoplatelets into the interlayer of rGO nanosheets. The nanostructures regular evolutions of rGO/CoAl-LDH free-standing film due to the embedding of LDHs were rationally investigated with detail experiments. Moreover, the flexible all-solid-state asymmetric supercapacitor device fabricated by using rGO/CoAl-LDH as positive electrode demonstrates a superior performance compared to most reported rGO-based free-standing film electrodes. The results presented here provide valuable insights into exploring mesoporous graphene-based free-standing architectures for highly-efficient and stable energy storage devices.
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