Defect-rich ultrafine amorphous tin oxyhydroxide nanoparticle anode for high-performance lithium-ion batteries

Lee, Jae Woo; Lee, Na Eun; Lee, Sang Yoon; Cheon, Seunguk; Cho, Sung Oh

doi:10.1016/j.mtsust.2023.100370

Materials Today Sustainability

2023

DOI: 10.1016/j.mtsust.2023.100370

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Defect-rich ultrafine amorphous tin oxyhydroxide nanoparticle anode for high-performance lithium-ion batteries

Jae Woo Lee

Na Eun Lee

Sang Yoon Lee

et al.

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2024

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Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

Cheon,

Lee,

Heo

et al. 2024

ACS Appl. Nano Mater.

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The performance of hybrid Li-ion capacitors (LICs), which aim for high energy density while maintaining high power density, declines owing to the slow kinetics of battery-type anodes. In this study, the performance of LICs was improved by directly forming a nanoporous Nb 2 O 5 anode on a niobium (Nb) current collector through the etching of Nb via electrochemical anodization. This binder-free structure provides a large active surface and fast electron transport. In addition, the formed Nb 2 O 5 anode had an amorphous structure with many defects, which increased the number of active sites and the conductivities of Li ions and electrons. Consequently, the amorphous nanoporous Nb 2 O 5 (a-n-Nb 2 O 5 ) anode exhibited a high specific capacity of 233 mA h g −1 at 1 A g −1 and an excellent capacity retention rate of 92% after 1000 cycles. The charge storage of the a-n-Nb 2 O 5 anode exhibited pseudocapacitive intercalation behavior, demonstrating the rapid kinetics of the electrode. Moreover, the an-Nb 2 O 5 anode exhibited an excellent energy density, maintaining a high energy density of 123.8 W kg −1 at 831 W h kg −1 .

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Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

Cheon,

Lee,

Heo

et al. 2024

ACS Appl. Nano Mater.

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show abstract

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Defect-rich ultrafine amorphous tin oxyhydroxide nanoparticle anode for high-performance lithium-ion batteries

Cited by 1 publication

References 60 publications

Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

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Defect-rich ultrafine amorphous tin oxyhydroxide nanoparticle anode for high-performance lithium-ion batteries

Cited by 1 publication

References 60 publications

Nanoporous Nb2O5 with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

Nanoporous Nb2O5 with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

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Product

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Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor

Nanoporous Nb₂O₅ with an Amorphous Structure for the Application as a Binder-Free Anode of a Hybrid Li-Ion Capacitor