Ultrastrong, highly conductive and capacitive hydrogel electrode for electron-ion transduction

Yao, Bowen; Yan, Yichen; Cui, Qingyu; Duan, Sidi; Wang, Canran; Du, Yingjie; Zhao, Yusen; Wu, Dong; Wu, Shuwang; Zhu, Xinyuan; Hsiai, Tzung K.; He, Ximin

doi:10.1016/j.matt.2022.09.004

Cited by 39 publications

(18 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the PVA/1CNF/100 anisotropic hydrogel presented a high toughness of 61.8 MJ·m –3 . These surprisingly high values far exceed the values in the relevant works (Figure c). ,,− Macroscopically, the anisotropic PVA/1CNF/100 hydrogel had the appearance of a white opaque solid, resulting from the combined effect of the salt solution and prestretching. In the prestretching process, the curled macromolecular chains were gradually transformed into a directionally stretched state.…”

Section: Resultsmentioning

confidence: 60%

Natural-Wood-Inspired Ultrastrong Anisotropic Hybrid Hydrogels Targeting Artificial Tendons or Ligaments

Kang

Shi

et al. 2023

ACS Nano

View full text Add to dashboard Cite

Hydrogels are able to mimic the flexibility of biological tissues or skin, but they still cannot achieve satisfactory strength and toughness, greatly limiting their scope of application. Natural wood can offer inspiration for designing high-strength hydrogels attributed to its anisotropic structure. Herein, we propose an integrated strategy for efficient preparation of ultrastrong hydrogels using a salting-assisted prestretching treatment. The as-prepared poly(vinyl alcohol)/cellulose nanofiber hybrid hydrogels show distinct wood-like anisotropy, including oriented molecular fiber bundles and extended grain size, which endows materials with extraordinarily comprehensive mechanical properties of ultimate breaking strength exceeding 40 MPa, strain approaching 250%, and toughness exceeding 60 MJ·m–3, and outstanding tear resistance. Impressively, the breaking strength and toughness of the reswollen preoriented hydrogels approach 10 MPa and 25 MJ·m–3, respectively. In vitro and in vivo tests demonstrate that the reswollen hydrogels do not affect the growth and viability of the cells, nor do they cause the inflammation or rejection of the mouse tissue, implying extremely low biotoxicity and perfect histocompatibility, showcasing bright prospects for application in artificial ligaments or tendons. The strategy provided in this study can be generalized to a variety of biocompatible polymers for the fabrication of high-performance hydrogels with anisotropic structures.

show abstract

Section: Resultsmentioning

confidence: 60%

Natural-Wood-Inspired Ultrastrong Anisotropic Hybrid Hydrogels Targeting Artificial Tendons or Ligaments

Kang

Shi

et al. 2023

ACS Nano

View full text Add to dashboard Cite

show abstract

“…As is reported, the electroactivity of the PEDOT-based hydrogel bioelectronics provides a positive physiological microenvironment for regulating cell proliferation and growth factor expression. 45 Moreover, the biocompatibility of the hydrogels in vitro was evaluated by the implantation of the PEDOT@PZIF-71/PAM hydrogel into the subcutaneous muscle spaces of New Zealand white rabbits. Fourteen days after implantation, a thin inflammatory zone with macrophages and eosinophils was observed around the pure PAM hydrogel (Fig.…”

Section: Resultsmentioning

confidence: 99%

Bioadhesive and electroactive hydrogels for flexible bioelectronics and supercapacitors enabled by a redox-active core–shell PEDOT@PZIF-71 system

et al. 2023

View full text Add to dashboard Cite

show abstract

“…However, despite these remarkable progresses, the development of high-performance PEDOT:PSS-based hydrogels with satisfactory electrical, mechanical, biological, and processable properties is still the core obstacle toward practical bioelectronic applications. A principal cause is that pure PEDOT:PSS hydrogels formed by physical cross-linking are mostly prepared by substantially reducing the content of soft PSS chains, thus generally leading to the mechanical weakness, brittleness, and relatively low stretchability of the resultant PEDOT:PSS hydrogels. ,− Previous strategies such as in situ polymerization or mixing with a tough hydrogel matrix and structural modification by introducing cross-linkable functional groups can effectively improve the mechanical performance of PEDOT:PSS-based hydrogels, but they generally disrupt the connectivity among PEDOT chains and result in significant conductivity reduction (typically < 30 S m –1 ). − Such a trade-off between electrical and mechanical properties poses immense barriers to synchronizing high conductivity and robust mechanical properties in PEDOT:PSS-based hydrogels. Other strategies like in situ aggregation and densification to improve PEDOT:PSS contents can effectively address this trade-off but severely compromise the mechanical softness and excellent processability for advanced fabrication techniques such as 3D printing .…”

Section: Introductionmentioning

confidence: 99%

Design of Highly Conductive, Intrinsically Stretchable, and 3D Printable PEDOT:PSS Hydrogels via PSS-Chain Engineering for Bioelectronics

Tian

Wang

et al. 2023

Chem. Mater.

View full text Add to dashboard Cite

Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)-based hydrogels have emerged as ideal interfacing materials for bioelectronics because of their intriguing electrical, mechanical, and biological properties. However, the development of high-performance PEDOT:PSS-based hydrogels simultaneously achieving high conductivity, robust mechanical properties, and accessibility for advanced manufacturing technologies remains a critical challenge for further advancing such materials toward practical applications. Herein, we develop a highly conductive, intrinsically soft, tough yet stretchable PEDOT:PSS-based hydrogel via a simple PSS-chain engineering strategy of introducing thermally cross-linkable N-(hydroxymethyl)acrylamide segments. The resultant PEDOT:PSS hydrogel exhibits high electrical conductivity (1850 S m–1), high stretchability (>50%), low Young’s modulus (4 MPa), and superior toughness (400 kJ m–3), satisfying multiple property requirements for practical bioelectronic applications. Based on this material, we further develop a novel PEDOT:PSS ink with superior 3D printability for direct ink writing 3D printing, enabling us to facilely fabricate bioelectronic devices like soft skin electrodes comparable to commercial products via multi-material 3D printing.

show abstract

Ultrastrong, highly conductive and capacitive hydrogel electrode for electron-ion transduction

Cited by 39 publications

References 41 publications

Natural-Wood-Inspired Ultrastrong Anisotropic Hybrid Hydrogels Targeting Artificial Tendons or Ligaments

Natural-Wood-Inspired Ultrastrong Anisotropic Hybrid Hydrogels Targeting Artificial Tendons or Ligaments

Bioadhesive and electroactive hydrogels for flexible bioelectronics and supercapacitors enabled by a redox-active core–shell PEDOT@PZIF-71 system

Design of Highly Conductive, Intrinsically Stretchable, and 3D Printable PEDOT:PSS Hydrogels via PSS-Chain Engineering for Bioelectronics

Contact Info

Product

Resources

About