Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO4-Al Foam

Jin, Ying; Wei, Shaoxin; Yang, Zhoufei; Cui, Chaojie; Wang, Jin; Li, Dongliang; Qian, Weizhong

doi:10.3390/batteries10080261

Open AccessArticle

Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam

by

Ying Jin

^1,†,

Shaoxin Wei

^1,†,

Zhoufei Yang

^1,†,

Chaojie Cui

^1,2,*,

Jin Wang

¹,

Dongliang Li

² and

Weizhong Qian

^1,2,*

¹

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

²

Ordos Laboratory, Ordos 017000, China

^*

Authors to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Batteries 2024, 10(8), 261; https://doi.org/10.3390/batteries10080261

Submission received: 29 June 2024 / Revised: 15 July 2024 / Accepted: 22 July 2024 / Published: 24 July 2024

(This article belongs to the Special Issue Lithium-Ion Batteries: Design, Preparation, Reaction Mechanisms of Electrode Materials, and Battery Life Evaluation)

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Abstract

With the increasing demand for Li resources worldwide, the easy recycling of Li-ion batteries materials becomes essential. We report a binder-free cathode consisting of carbon nanotubes (CNTs) and LiFePO₄ (LFP) nanoparticles embedded in a 3D Al network. The electrode stability depends on the CNT ratio, where 3% CNT-wrapping LFPs provide a stable structure free of detachment from Al foam, as observed on Al foil. The binder-free cathode sheet exhibited excellent performance for high-rate discharge and long-term cycle life. Materials on the cathode can be easily detached with ultrasonic treatment when immersed in organic solvent, which is advantageous for a green and high-efficiency strategy of recycling all valuable materials compared to the binder-used electrode.

Keywords: Li-ion battery recycling; binder-free cathode; carbon nanotubes; Al foam; 3D porous current collector

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MDPI and ACS Style

Jin, Y.; Wei, S.; Yang, Z.; Cui, C.; Wang, J.; Li, D.; Qian, W. Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam. Batteries 2024, 10, 261. https://doi.org/10.3390/batteries10080261

AMA Style

Jin Y, Wei S, Yang Z, Cui C, Wang J, Li D, Qian W. Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam. Batteries. 2024; 10(8):261. https://doi.org/10.3390/batteries10080261

Chicago/Turabian Style

Jin, Ying, Shaoxin Wei, Zhoufei Yang, Chaojie Cui, Jin Wang, Dongliang Li, and Weizhong Qian. 2024. "Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam" Batteries 10, no. 8: 261. https://doi.org/10.3390/batteries10080261

APA Style

Jin, Y., Wei, S., Yang, Z., Cui, C., Wang, J., Li, D., & Qian, W. (2024). Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam. Batteries, 10(8), 261. https://doi.org/10.3390/batteries10080261

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Li-Ion Batteries with a Binder-Free Cathode of Carbon Nanotubes-LiFePO₄-Al Foam

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