Self-reducing molecular ink for printed electronics and lithium-ion battery cathodes as conductive binder

Qi, Wenning; Han, Ruolin; Quan, Hui; Guo, Ruilu; Gao, Dali; Zhou, Zheng; Chen, Guang-Xin; Li, Qifang

doi:10.1039/d3tc03636g

J. Mater. Chem. C

2024

DOI: 10.1039/d3tc03636g

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Self-reducing molecular ink for printed electronics and lithium-ion battery cathodes as conductive binder

Wenning Qi,

Ruolin Han,

Hui Quan

et al.

Abstract: Particle-free metal-organic-decomposition inks, especially amine-coordinated copper formate compounds, can be introduced as highly conductive binder precursors to proposed to replace commonly used polymer adhesives. Here, a copper formate complex (Cuf-C)...

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Planar Micro-Supercapacitors with High Power Density Screen-Printed by Aqueous Graphene Conductive Ink

Wang,

Zhang,

Zhu

et al. 2024

Materials

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Simple and scalable production of micro-supercapacitors (MSCs) is crucial to address the energy requirements of miniature electronics. Although significant advancements have been achieved in fabricating MSCs through solution-based printing techniques, the realization of high-performance MSCs remains a challenge. In this paper, graphene-based MSCs with a high power density were prepared through screen printing of aqueous conductive inks with appropriate rheological properties. High electrical conductivity (2.04 × 104 S∙m−1) and low equivalent series resistance (46.7 Ω) benefiting from the dense conductive network consisting of the mesoporous structure formed by graphene with carbon black dispersed as linkers, as well as the narrow finger width and interspace (200 µm) originating from the excellent printability, prompted the fully printed MSCs to deliver high capacitance (9.15 mF∙cm−2), energy density (1.30 µWh∙cm−2) and ultrahigh power density (89.9 mW∙cm−2). Notably, the resulting MSCs can effectively operate at scan rates up to 200 V∙s−1, which surpasses conventional supercapacitors by two orders of magnitude. In addition, the MSCs demonstrate excellent cycling stability (91.6% capacity retention and ~100% Coulombic efficiency after 10,000 cycles) and extraordinary mechanical properties (92.2% capacity retention after 5000 bending cycles), indicating their broad application prospects in flexible wearable/portable electronic systems.

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Planar Micro-Supercapacitors with High Power Density Screen-Printed by Aqueous Graphene Conductive Ink

Wang,

Zhang,

Zhu

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

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Self-reducing molecular ink for printed electronics and lithium-ion battery cathodes as conductive binder

Abstract: Particle-free metal-organic-decomposition inks, especially amine-coordinated copper formate compounds, can be introduced as highly conductive binder precursors to proposed to replace commonly used polymer adhesives. Here, a copper formate complex (Cuf-C)...

Cited by 1 publication

References 31 publications

Planar Micro-Supercapacitors with High Power Density Screen-Printed by Aqueous Graphene Conductive Ink

Planar Micro-Supercapacitors with High Power Density Screen-Printed by Aqueous Graphene Conductive Ink

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