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Research on the assembly process of full coin cells: key factors affecting data reliability

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Abstract

In order to predict the actual performance of battery materials in full cells more easily and accurately, this work systematically studies the fabrication process of coin full cells. By exploring a series of key factors corresponding to the N/P ratio of different active materials, the type of separator, the amount of electrolyte injections, and the relative size of the electrode area, a set of full coin cell preparation process with high repeatability and reliable data is constructed. After optimizing the key parameters, the prepared full coin cells have good consistency and stable performance, and graphite||NCM712 cells can maintain a capacity retention rate of 83.4% at 0.5 C after 200 cycles. Based on the results in this work, researchers can design and prepare their own full coin cells and can more easily and quickly obtain the actual performance of various aspects of the material.

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Funding

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51874358 and 51772333).

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, People’s Republic of China

    Zhiyuan Xue, Dichang Guan, Jingyao Zeng, Yanbing Cao, Zhongdong Peng, Guorong Hu & Ke Du

  2. Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, Hunan, 410083, People’s Republic of China

    Yanbing Cao, Zhongdong Peng, Guorong Hu & Ke Du

  3. Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Central South University, Changsha, Hunan, 410083, People’s Republic of China

    Yanbing Cao, Zhongdong Peng, Guorong Hu & Ke Du

Authors
  1. Zhiyuan Xue
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  2. Dichang Guan
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  4. Yanbing Cao
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Contributions

Zhiyuan Xue: conceptualization, methodology, formal analysis, investigation, data curation, software, visualization, writing - original draft.

Dichang Guan: methodology, investigation, proofreading the article.

Jingyao Zeng: providing language help, grammar.

Yanbing Cao: conceptualization, funding acquisition.

Zhongdong Peng: formal analysis, supervision, validation.

Guorong Hu: conceptualization, methodology.

Ke Du: investigation, resources, formal analysis.

Corresponding author

Correspondence to Ke Du.

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Xue, Z., Guan, D., Zeng, J. et al. Research on the assembly process of full coin cells: key factors affecting data reliability. Ionics 29, 5285–5293 (2023). https://doi.org/10.1007/s11581-023-05225-2

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  • DOI: https://doi.org/10.1007/s11581-023-05225-2

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