| Title |
Carbon-Yarn-Based Supercapacitors with In Situ Regenerated Cellulose Hydrogel for Sustainable Wearable Electronics |
| ID_Doc |
10285 |
| Authors |
Carvalho, JT; Cunha, I; Coelho, J; Fortunato, E; Martins, R; Pereira, L |
| Title |
Carbon-Yarn-Based Supercapacitors with In Situ Regenerated Cellulose Hydrogel for Sustainable Wearable Electronics |
| Year |
2022 |
| Published |
Acs Applied Energy Materials, 5, 10 |
| DOI |
10.1021/acsaem.2c01222 |
| Abstract |
Developing sustainable options for energy storage in textiles is needed to power future wearable "Internet of Things" (IoT) electronics. This process must consider disruptive alternatives that address questions of sustainability, reuse, repair, or even a second life application. Herein, we pair stretch-broken carbon fiber yarns (SBCFYs), as current collectors, and an in situ regenerated cellulose-based ionic hydrogel (RCIH), as an electrolyte, to fabricate 1D fiber-shaped supercapacitors (FSCs). The areal specific capacitance reaches 433.02 mu F center dot cm-2 at 5 mu A center dot cm-2 , while the specific energy density is 1.73 x 10-2 mu Wh center dot cm-2. The maximum achieved specific power density is 5.33 x 10-1 mW center dot cm-2 at 1 mA center dot cm-2. The 1D FSCs possess a long-life cycle and 92% capacitance retention after 10 000 consecutive voltammetry cycles, higher than similar ones using the reference PVA/H3PO4 gel electrolyte. Additionally, the feasibility and reproducibility of the produced devices were demonstrated by connecting three devices in series and parallel, showing a small variation of the current density in flat and bent positions. An environmentally responsible approach was implemented by recovering the active materials from the 1D FSCs and reusing or recycling them without compromising the electrochemical performance, thus ensuring a circular economy path. |
| Author Keywords |
cellulose; carbon fibers; fiber-shaped; energy storage; supercapacitor; sustainability |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000871028100001 |
| WoS Category |
Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary |
| Research Area |
Chemistry; Energy & Fuels; Materials Science |
| PDF |
https://doi.org/10.1021/acsaem.2c01222
|