Giant energy storage and power density negative capacitance superlattices

Cheema, Suraj S.; Shanker, Nirmaan; Hsu, Shang-Lin; Schaadt, Joseph; Ellis, Nathan M.; Cook, Matthew; Rastogi, Ravi; Pilawa-Podgurski, Robert C. N.; Ciston, Jim; Mohamed, Mohamed; Salahuddin, Sayeef

doi:10.1038/s41586-024-07365-5

Nature

2024

DOI: 10.1038/s41586-024-07365-5

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Giant energy storage and power density negative capacitance superlattices

Suraj S. Cheema,

Nirmaan Shanker,

Shang-Lin Hsu

et al.

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Cited by 4 publications

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Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Tang,

Zhang,

Zhu

et al. 2024

Adv Funct Materials

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Architected fibrous electrodes with hierarchically porous, stable interface coupling, and good biocompatibility that accelerates charge transfer and storage are vital to realize high‐performance fiber‐shaped supercapacitors (FSCs) toward wearable and implantable systems. Here, a hierarchically porous and hetero‐structured black phosphorus/Ti3C2TX MXene aerogel (A‐BP/Ti3C2TX) fiber based on electrostatic self‐assembly and microfluidic spinning methods is reported. The as‐prepared A‐BP/Ti3C2TX fiber with interconnected porous networks, high conductive skeleton, and substantial interfacial building exhibits a low diffusion energy barrier of H+, the large adsorption energy of H+, fast interfacial electron conduction, and excellent structural stability by density functional theory calculations and in situ/ex situ characteristics. As a result, the A‐BP/Ti3C2TX fiber presents boosted electrolyte ion diffusion kinetic and capacitance of 369 F g−1. Furthermore, the asymmetric FSCs deliver good energy density of 6.39 Wh kg−1 and long cycling stability of 20 000 cycles, thereby successfully powering wearable devices. More importantly, by combining the hydrogel adhesion agent, the implantable FSCs that can firmly adhere to the tissues show significant bending stability (88.52% capacitance retention after 5000 cycles), impressively adhesive capability in tissue fluid or wetted tissue surface, and considerably no cell toxic. The work offers a broad path for designing structural fiber electrodes for implantable energy technology and wearable applications.

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Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Tang,

Zhang,

Zhu

et al. 2024

Adv Funct Materials

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Performance Limits and Advancements in Single 2D Transition Metal Dichalcogenide Transistor

Chen,

Sun,

Wang

et al. 2024

Nano-Micro Lett.

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Two-dimensional (2D) transition metal dichalcogenides (TMDs) allow for atomic-scale manipulation, challenging the conventional limitations of semiconductor materials. This capability may overcome the short-channel effect, sparking significant advancements in electronic devices that utilize 2D TMDs. Exploring the dimension and performance limits of transistors based on 2D TMDs has gained substantial importance. This review provides a comprehensive investigation into these limits of the single 2D-TMD transistor. It delves into the impacts of miniaturization, including the reduction of channel length, gate length, source/drain contact length, and dielectric thickness on transistor operation and performance. In addition, this review provides a detailed analysis of performance parameters such as source/drain contact resistance, subthreshold swing, hysteresis loop, carrier mobility, on/off ratio, and the development of p-type and single logic transistors. This review details the two logical expressions of the single 2D-TMD logic transistor, including current and voltage. It also emphasizes the role of 2D TMD-based transistors as memory devices, focusing on enhancing memory operation speed, endurance, data retention, and extinction ratio, as well as reducing energy consumption in memory devices functioning as artificial synapses. This review demonstrates the two calculating methods for dynamic energy consumption of 2D synaptic devices. This review not only summarizes the current state of the art in this field but also highlights potential future research directions and applications. It underscores the anticipated challenges, opportunities, and potential solutions in navigating the dimension and performance boundaries of 2D transistors.

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Physical Origin of Hafnium-based Ferroelectricity

Lv,

Cao,

Wang

et al. 2024

Computational Materials Today

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Giant energy storage and power density negative capacitance superlattices

Cited by 4 publications

References 131 publications

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Performance Limits and Advancements in Single 2D Transition Metal Dichalcogenide Transistor

Physical Origin of Hafnium-based Ferroelectricity

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Giant energy storage and power density negative capacitance superlattices

Cited by 4 publications

References 131 publications

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti3C2TX MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti3C2TX MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Performance Limits and Advancements in Single 2D Transition Metal Dichalcogenide Transistor

Physical Origin of Hafnium-based Ferroelectricity

Contact Info

Product

Resources

About

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability

Hierarchically Porous and Hetero‐Structured Black Phosphorus/Ti₃C₂T_X MXene Aerogel Fiber for Wearable Supercapacitors with Implantable Capability