| Full text | |
| Author(s): |
Nozella, Natan Luis
;
Lima, Joao Victor Morais
;
de Oliveira, Rafael Furlan
;
Graeff, Carlos Frederico de Oliveira
Total Authors: 4
|
| Document type: | Journal article |
| Source: | MATERIALS ADVANCES; v. N/A, p. 12-pg., 2023-09-13. |
| Abstract | |
Organic mixed ionic-electronic conductors (OMIECs) can efficiently couple and transport ionic and electronic charge species, making them key elements for bioelectronics, neuromorphic computing, soft robotics, and energy storage applications. Here, we have synthesized a water-soluble, bio-inspired ion conductor melanin (Mel) and blended it with benchmark conducting polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) to form a new OMIEC. We explored the potential of Mel/PEDOT:PSS OMIEC blends in two critical device applications: organic electrochemical transistors (OECTs) and supercapacitors (SuperCaps). Mel incorporation into PEDOT:PSS enhances the ionic-electronic coupling when ions from an electrolyte are injected into the material, increasing the volumetric capacitance of PEDOT:PSS films ten-fold. The addition of Mel in PEDOT:PSS also increases the transconductance of OECTs (from 7 & PLUSMN; 1 to 11 & PLUSMN; 3 mS), and the energy and power densities of SuperCaps, from 0.41 & PLUSMN; 0.02 to 0.62 & PLUSMN; 0.01 W h kg-1 and from 119 & PLUSMN; 14 to 190 & PLUSMN; 6 W kg-1, respectively. This work exploits the fundamental properties, device physics, and technological potential of a new and green OMIEC, ultimately aiming the development of sustainable electronics. A new and green blend based on PEDOT:PSS and synthetic melanin is demonstrated as an organic mixed ionic electronic conductor (OMIEC) with enhanced ionic-electronic coupling for organic electrochemical transistors and supercapacitors. (AU) | |
| FAPESP's process: | 22/00410-3 - Obtation and characterization of organic electrochemical transistors based on melanin |
| Grantee: | Natan Luis Nozella |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 21/03379-7 - Application of New Materials as Electrodes in Flexible Supercapacitors |
| Grantee: | João Victor Morais Lima |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 20/12356-8 - Stability optimization of perovskite solar cells |
| Grantee: | Carlos Frederico de Oliveira Graeff |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 21/06238-5 - Functionalized solution-processed 2D materials: development of prototyping electric sensors and biosensors |
| Grantee: | Rafael Furlan de Oliveira |
| Support Opportunities: | Research Grants - Young Investigators Grants |