In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT)
In situ 4D (3D spatial + 1D temporal) distribution of carbon black (CB) volume fraction /CB in cathode slurry of lithium-ion battery (LIB) (CB powder and lithium cobalt dioxide (LiCoO 2) particles in NMP/PVDF solution) has been visualized by multi-layered electrical resistance tomography (mlERT). Th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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lsevier B.V. and The Society of Powder Technology Japan.
2022
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/278809/1/Prayitno-2_SV.pdf |
| _version_ | 1826050325998469120 |
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| author | Ikeno, Natsuki Prayitno, Yosephus Ardean Kurnianto Sejati, Prima Asmara Kawashima, Daisuke Takei, Masahiro |
| author_facet | Ikeno, Natsuki Prayitno, Yosephus Ardean Kurnianto Sejati, Prima Asmara Kawashima, Daisuke Takei, Masahiro |
| author_sort | Ikeno, Natsuki |
| collection | UGM |
| description | In situ 4D (3D spatial + 1D temporal) distribution of carbon black (CB) volume fraction /CB in cathode slurry of lithium-ion battery (LIB) (CB powder and lithium cobalt dioxide (LiCoO 2) particles in NMP/PVDF solution) has been visualized by multi-layered electrical resistance tomography (mlERT). The mlERT are composed of 24 electrodes (=8 electrodes/layer 3 layers) with a newly developed multiplexer unit, which reconstructs the normalized conductivity r from the measured voltages U. The conditions of /CB is observed in the three dispersion states which are initial state, dispersing state, and fully dispersed
state, under the mixing time t ¼ 0 360s and the mixing speed x ¼ 720; 400; and 200rpm. As the results, in the initial state (t ¼ 0s), the distribution of /CB is clearly visualized by the spatial r distribution from the high conductivity of /CB to the low conductivity of /Li which represents the initial position of CB powder and LiCoO 2 particles in NMP/PVDF solution. In the dispersing state (t ¼ 30 120 s), the distribution of /CB is dynamically changed as the r distribution is graduallly increased in the 3D spatial domain of mlERT which represents the dispersing CB powder within LiCoO2 particles in NMP/PVDF solution. In
the fully dispersed state (t ¼ 120 360 s), the /CB is in the uniformity as the r distribution tends to be uniformly dispersed which represents the fully dispersed CB in cathode slurry. In order to evaluate the distribution visualization of /CB in the fully dispersed state by mlERT, a qualitatively-scanning electron microscope (SEM) and a quantitatively-invasive two-wire resistance measurement are tested. The qualitatively-SEM images of fully dispersed CB at the height z ¼ 5 and 20mm are observed in the distributed formation of CB powder within LiCoO2 particles in NMP/PVDF solution which agrees to the uniformity of the r distribution by mlERT. Moreover, the comparison of r distribution by mlERT to the quantitatively-invasive two-wire resistance measurement is resulted in a low root means square error RSME ¼ 0:00196% which indicates the high accuracy of the in situ 4D distribution visualization of /CB
in cathode slurry of LIB by mlERT. |
| first_indexed | 2024-03-14T00:02:12Z |
| format | Article |
| id | oai:generic.eprints.org:278809 |
| institution | Universiti Gadjah Mada |
| language | English |
| last_indexed | 2024-03-14T00:02:12Z |
| publishDate | 2022 |
| publisher | lsevier B.V. and The Society of Powder Technology Japan. |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2788092023-11-01T08:58:09Z https://repository.ugm.ac.id/278809/ In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) Ikeno, Natsuki Prayitno, Yosephus Ardean Kurnianto Sejati, Prima Asmara Kawashima, Daisuke Takei, Masahiro Mechanical Engineering In situ 4D (3D spatial + 1D temporal) distribution of carbon black (CB) volume fraction /CB in cathode slurry of lithium-ion battery (LIB) (CB powder and lithium cobalt dioxide (LiCoO 2) particles in NMP/PVDF solution) has been visualized by multi-layered electrical resistance tomography (mlERT). The mlERT are composed of 24 electrodes (=8 electrodes/layer 3 layers) with a newly developed multiplexer unit, which reconstructs the normalized conductivity r from the measured voltages U. The conditions of /CB is observed in the three dispersion states which are initial state, dispersing state, and fully dispersed state, under the mixing time t ¼ 0 360s and the mixing speed x ¼ 720; 400; and 200rpm. As the results, in the initial state (t ¼ 0s), the distribution of /CB is clearly visualized by the spatial r distribution from the high conductivity of /CB to the low conductivity of /Li which represents the initial position of CB powder and LiCoO 2 particles in NMP/PVDF solution. In the dispersing state (t ¼ 30 120 s), the distribution of /CB is dynamically changed as the r distribution is graduallly increased in the 3D spatial domain of mlERT which represents the dispersing CB powder within LiCoO2 particles in NMP/PVDF solution. In the fully dispersed state (t ¼ 120 360 s), the /CB is in the uniformity as the r distribution tends to be uniformly dispersed which represents the fully dispersed CB in cathode slurry. In order to evaluate the distribution visualization of /CB in the fully dispersed state by mlERT, a qualitatively-scanning electron microscope (SEM) and a quantitatively-invasive two-wire resistance measurement are tested. The qualitatively-SEM images of fully dispersed CB at the height z ¼ 5 and 20mm are observed in the distributed formation of CB powder within LiCoO2 particles in NMP/PVDF solution which agrees to the uniformity of the r distribution by mlERT. Moreover, the comparison of r distribution by mlERT to the quantitatively-invasive two-wire resistance measurement is resulted in a low root means square error RSME ¼ 0:00196% which indicates the high accuracy of the in situ 4D distribution visualization of /CB in cathode slurry of LIB by mlERT. lsevier B.V. and The Society of Powder Technology Japan. 2022-08-26 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/278809/1/Prayitno-2_SV.pdf Ikeno, Natsuki and Prayitno, Yosephus Ardean Kurnianto and Sejati, Prima Asmara and Kawashima, Daisuke and Takei, Masahiro (2022) In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT). Advanced Powder Technology, 33 (2022). pp. 1-15. ISSN 0921-8831 http://www.elsevier.com/locate/apt https://doi.org/10.1016/j.apt.2022.103766 |
| spellingShingle | Mechanical Engineering Ikeno, Natsuki Prayitno, Yosephus Ardean Kurnianto Sejati, Prima Asmara Kawashima, Daisuke Takei, Masahiro In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title | In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title_full | In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title_fullStr | In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title_full_unstemmed | In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title_short | In situ 4D distribution visualization of carbon-black volume fraction in cathode slurry of lithium-ion battery by multi-layered electrical resistance tomography (mlERT) |
| title_sort | in situ 4d distribution visualization of carbon black volume fraction in cathode slurry of lithium ion battery by multi layered electrical resistance tomography mlert |
| topic | Mechanical Engineering |
| url | https://repository.ugm.ac.id/278809/1/Prayitno-2_SV.pdf |
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