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用于锂离子电池负极的多孔铜集流体上的N型掺杂硅薄膜。

N-Type Doped Silicon Thin Film on a Porous Cu Current Collector as the Negative Electrode for Li-Ion Batteries.

作者信息

Mukanova Aliya, Nurpeissova Arailym, Kim Sung-Soo, Myronov Maksym, Bakenov Zhumabay

机构信息

School of Engineering, National Laboratory Astana Nazarbayev University 53 Kabanbay Batyr Ave.010000 Astana Kazakhstan.

Graduate School of Energy Science and Technology Chungnam National University 99 Daehak ave., Yuseong-gu Daejeon 34134 South Korea.

出版信息

ChemistryOpen. 2017 Dec 7;7(1):92-96. doi: 10.1002/open.201700162. eCollection 2018 Jan.

DOI:10.1002/open.201700162
PMID:29318101
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5754557/
Abstract

This work reports the preparation of a three-dimensional Si thin film negative electrode employing a porous Cu current collector. A previously reported copper etching procedure was modified to develop the porous structures inside a 9 μm thick copper foil. Magnetron sputtering was used for the deposition of an n-type doped 400 nm thick amorphous Si thin film. Electrochemical cycling of the prepared anode confirmed the effectiveness of utilizing the approach. The designed Si thin film electrode retained a capacity of around 67 μAh cm (1675 mAh g) in 100 cycle. The improved electrochemical performance resulted in an enhancement of both areal capacity and capacity retention in contrast with flat and rough current collectors that were prepared for comparison.

摘要

这项工作报道了采用多孔铜集流体制备三维硅薄膜负极的方法。对先前报道的铜蚀刻工艺进行了改进，以在9μm厚的铜箔内部形成多孔结构。采用磁控溅射沉积了400nm厚的n型掺杂非晶硅薄膜。对制备的阳极进行电化学循环证实了该方法的有效性。所设计的硅薄膜电极在100次循环中保持约67μAh·cm（1675mAh·g）的容量。与为作比较而制备的平整和粗糙集流体相比，改进后的电化学性能提高了面积容量和容量保持率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/a2188dacdeb0/OPEN-7-92-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/7c3827df262c/OPEN-7-92-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/9aa4dcdd24a8/OPEN-7-92-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/a2188dacdeb0/OPEN-7-92-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/7c3827df262c/OPEN-7-92-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/9aa4dcdd24a8/OPEN-7-92-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/41c1/5754557/a2188dacdeb0/OPEN-7-92-g006.jpg

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