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用于环保型锂离子电池的三元阴极混合电极。

Ternary Cathode Blend Electrodes for Environmentally Friendly Lithium-Ion Batteries.

作者信息

Jobst Nicola Michael, Hoffmann Alice, Klein Andreas, Zink Stefan, Wohlfahrt-Mehrens Margret

机构信息

Zentrum für Sonnenenergie und Wasserstoffforschung Baden-Württemberg, Lise-Meitner-Straße 24, 89081, Ulm, Germany.

Universität Ulm, 89069, Ulm, Germany.

出版信息

ChemSusChem. 2020 Aug 7;13(15):3928-3936. doi: 10.1002/cssc.202000251. Epub 2020 Jun 25.

DOI:10.1002/cssc.202000251
PMID:32311228
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7497172/
Abstract

The combination of two active materials into one positive electrode of a lithium-ion battery is an uncomplicated and cost-effective way to combine the advantages of different active materials while reducing the disadvantages of each material. In this work, the concept of binary blends is extended to ternary compositions. The combination of three different active materials provides high versatility in designing the properties of an electrode. Therefore, the unique properties of a layered oxide, phospho-olivine, and spinel type material are mixed to design a high-energy cathode with improved environmental friendliness. Four different compositions of blend electrodes are investigated, each with individual benefits. Synergistic effects improved the rate capability, power density, thermal and chemical stability simultaneously. The blend electrode consisting of 75 % NMC, 12.5 % LMFP and LMO provides similar energy and power density as a pure NMC electrode while economizing 25 % cobalt and nickel.

摘要

将两种活性材料组合到锂离子电池的一个正极中，是一种简单且经济高效的方法，可在降低每种材料缺点的同时，结合不同活性材料的优点。在这项工作中，二元共混物的概念扩展到了三元组合物。三种不同活性材料的组合在设计电极性能方面提供了高度的通用性。因此，将层状氧化物、磷橄榄石和尖晶石型材料的独特性能混合，以设计出具有更高环境友好性的高能阴极。研究了四种不同组成的共混电极，每种都有各自的优点。协同效应同时提高了倍率性能、功率密度、热稳定性和化学稳定性。由75%的NMC、12.5%的LMFP和LMO组成的共混电极，在节省25%钴和镍的同时，提供了与纯NMC电极相似的能量和功率密度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/02ee9ea16af2/CSSC-13-3928-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/db3d22a39e98/CSSC-13-3928-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/be859a771ba5/CSSC-13-3928-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/369d1da3428b/CSSC-13-3928-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/d96b1f5fac85/CSSC-13-3928-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/eab058e6b36f/CSSC-13-3928-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/02ee9ea16af2/CSSC-13-3928-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/db3d22a39e98/CSSC-13-3928-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/be859a771ba5/CSSC-13-3928-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/369d1da3428b/CSSC-13-3928-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/d96b1f5fac85/CSSC-13-3928-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/eab058e6b36f/CSSC-13-3928-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c747/7497172/02ee9ea16af2/CSSC-13-3928-g006.jpg

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本文引用的文献

1
Thermal Synergy Effect between LiNi0.5Co0.2Mn0.3O2 and LiMn2O4 Enhances the Safety of Blended Cathode for Lithium Ion Batteries.LiNi0.5Co0.2Mn0.3O2 与 LiMn2O4 之间的热协同效应提高了锂离子电池混合正极的安全性。
ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20147-56. doi: 10.1021/acsami.6b06976. Epub 2016 Jul 28.
2
Thermophysical properties of LiCoO₂-LiMn₂O₄ blended electrode materials for Li-ion batteries.用于锂离子电池的LiCoO₂-LiMn₂O₄混合电极材料的热物理性质
Phys Chem Chem Phys. 2016 Apr 21;18(15):10550-62. doi: 10.1039/c6cp00887a. Epub 2016 Mar 31.
3
Ultrathin spinel LiMn2O4 nanowires as high power cathode materials for Li-ion batteries.
超晶格 LiMn2O4 纳米线作为锂离子电池的高功率阴极材料。
Nano Lett. 2010 Oct 13;10(10):3852-6. doi: 10.1021/nl101047f.