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可充电锌/二氧化锰电池的X射线断层扫描研究

An X-ray Tomographic Study of Rechargeable Zn/MnO₂ Batteries.

作者信息

Osenberg Markus, Manke Ingo, Hilger André, Kardjilov Nikolay, Banhart John

机构信息

Institute of Material Science and Technologies, Technical University Berlin, Hardenbergstraße 36, 10623 Berlin, Germany.

Helmholtz-Centre Berlin for Materials and Energy GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.

出版信息

Materials (Basel). 2018 Aug 21;11(9):1486. doi: 10.3390/ma11091486.

DOI:10.3390/ma11091486
PMID:30134522
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6164811/
Abstract

We present non-destructive and non-invasive in operando X-ray tomographic investigations of the charge and discharge behavior of rechargeable alkaline-manganese (RAM) batteries (Zn-MnO₂ batteries). Changes in the three-dimensional structure of the zinc anode and the MnO₂ cathode material after several charge/discharge cycles were analyzed. Battery discharge leads to a decrease in the zinc particle sizes, revealing a layer-by-layer dissolving behavior. During charging, the particles grow again to almost their initial size and shape. After several cycles, the particles sizes slowly decrease until most of the particles become smaller than the spatial resolution of the tomography. Furthermore, the number of cracks in the MnO₂ bulk continuously increases and the separator changes its shape. The results are compared to the behavior of a conventional primary cell that was also charged and discharged several times.

摘要

我们展示了对可充电碱性锰（RAM）电池（锌-二氧化锰电池）充放电行为进行的非破坏性和非侵入性的原位X射线断层扫描研究。分析了经过几次充放电循环后锌阳极和二氧化锰阴极材料三维结构的变化。电池放电导致锌颗粒尺寸减小，显示出逐层溶解行为。充电时，颗粒再次生长至几乎其初始尺寸和形状。经过几个循环后，颗粒尺寸缓慢减小，直到大多数颗粒变得小于断层扫描的空间分辨率。此外，二氧化锰块体中的裂纹数量持续增加，并且隔膜改变了其形状。将结果与同样经过几次充放电的传统原电池的行为进行了比较。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/00773ea587f1/materials-11-01486-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/b9737feb34b0/materials-11-01486-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/f31478b56e68/materials-11-01486-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/071475602607/materials-11-01486-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/41383ab98c75/materials-11-01486-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/d837a47b5fdd/materials-11-01486-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/b2e66a8b4a2d/materials-11-01486-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/e7629db32c55/materials-11-01486-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/00773ea587f1/materials-11-01486-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/b9737feb34b0/materials-11-01486-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/f31478b56e68/materials-11-01486-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/071475602607/materials-11-01486-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/41383ab98c75/materials-11-01486-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/d837a47b5fdd/materials-11-01486-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/b2e66a8b4a2d/materials-11-01486-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/e7629db32c55/materials-11-01486-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0341/6164811/00773ea587f1/materials-11-01486-g008.jpg

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