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Open AccessArticle

Electrochemical Performance of a Lithium Ion Battery with Different Nanoporous Current Collectors

School of Engineering, Republic Polytechnic, Singapore 738964, Singapore
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Batteries 2019, 5(1), 21; https://doi.org/10.3390/batteries5010021
Received: 26 November 2018 / Revised: 15 January 2019 / Accepted: 31 January 2019 / Published: 12 February 2019
In this work, we use ultrasonication and chemical etching agents to assist preparation of metal current collectors with nano-scale pores on the surface. Four different current collectors (copper foil, copper foam, aluminum foil, and aluminum foam) are prepared. The preparation parameters, ultrasonic time and etching agent concentration, are investigated and optimized accordingly. The morphologies of the as-prepared current collectors are observed under a scanning electronic microscope. Soft-packed lithium ion batteries with various current collectors are fabricated and tested. The prepared lithium ion batteries show good long-term cycle stability. The nanoporous structure of the current collector has little impact on the improvement of battery capacity under slow charging/discharging rates but has a positive impact on capacity retention under fast charging/discharging rates. View Full-Text
Keywords: lithium ion battery; current collector; nano porous structure; ultrasonic preparation lithium ion battery; current collector; nano porous structure; ultrasonic preparation
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MDPI and ACS Style

Feng, H.; Chen, Y.; Wang, Y. Electrochemical Performance of a Lithium Ion Battery with Different Nanoporous Current Collectors. Batteries 2019, 5, 21.

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