Opening twisted polymer chains for simultaneously high printability and battery fast-charge

Ying Wang, Jinlong He, Daxian Cao, Ercan Cakmak, Xianhui Zhao, Qingliu Wu, Yuyue Zhao, Haoze Ren, Xiao Sun, Ying Li, Hongli Zhu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Fast-charging is key to the widespread adoption of battery-based electric vehicles. However, improving fast-charging through architecture optimization is expensive. To reduce costs and expand to commercialization, we applied roll-to-roll screen printing technology to create channels and decrease the tortuosity of electrodes. For the first time, this work successfully opened twisted polymer chains within high-solid-content inks to improve their screen printability and battery performance of as-printed electrodes. With LiNi0.6Mn0.2Co0.2O2 as active materials, the 60% solid content ink presents superior screen printability after opening the twisted binder chains. As-printed electrode exhibits 33% higher charge capacity at 6 C than printed electrode with chains twisted ink at mass loading of 6.5 mg/cm2. Furthermore, coarse-grained molecular dynamics simulations are performed to study the underlying mechanism systematically. The new ink preparation procedure provides a scalable, effective strategy for manufacturing screen-printable battery ink and promotes screen-printed electrode technology.

Original languageEnglish
Pages (from-to)42-54
Number of pages13
JournalEnergy Storage Materials
Volume55
DOIs
StatePublished - Jan 2023

Funding

This work is supported by the U. S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Advanced Manufacturing Office, award number DE-EE0009111. The authors appreciate Nanoramic Laboratories (Boston, MA, 02210, USA) for providing multi-crystalized NMC 622 for this study. The authors thank Northeastern University Center for Renewable Energy Technology (NUCRET) for the use of SEM. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). Y.L. would like to thank the support from the US National Science Foundation under Grants 1755779 and 1762661, as well as 3M's Non-Tenured Faculty Award. This work is supported by the U. S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Advanced Manufacturing Office , award number DE-EE0009111 . The authors appreciate Nanoramic Laboratories (Boston, MA, 02210, USA) for providing multi-crystalized NMC 622 for this study. The authors thank Northeastern University Center for Renewable Energy Technology (NUCRET) for the use of SEM. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). Y.L. would like to thank the support from the US National Science Foundation under Grants 1755779 and 1762661, as well as 3M’s Non-Tenured Faculty Award.

Keywords

  • Ink preparation
  • Lattice Boltzmann method
  • Polymer chains
  • Printability
  • Screen printing

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