High energy-density, fast-chargeable lithium-ion batteries by mechanically interlocked polymers
Abstract
Silicon anodes can play a key role in improving the energy density and fast-charging capability of lithium-ion batteries; however, their uncontrolled swelling remains a formidable hurdle in practice, particularly at a high electrode density, an essential parameter for high volumetric energy density. To address this challenge, we report here a polymeric poly(acrylic acid) binder with mechanically interlocked crosslinks to realize a topologically entangled polymer network. This binder system effectively dissipates the stress resulting from electrode calendering and repeated cycling via various mechanical motions at the mechanically interlocked crosslinks, which offer spatially homogeneous mechanical strength and elasticity. This design markedly improves the cycle life and fast-charging capability of silicon-graphite electrodes over those using conventional binders at high electrode densities, highlighting the usefulness of a mechanically interlocked polymer network in distributing the stress of high-capacity battery electrodes during their fabrication and operation.
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BibTeX
@article{seo2026high,
title = {{High energy-density, fast-chargeable lithium-ion batteries by mechanically interlocked polymers}},
author = {Gyuwon Seo and Ahmed Elabd and Seung Hyun Jeong and Leonie Braks and Taeyong Lee and Kiho Park and Jaemin Kim and Sungchan Kim and Soobin Lee and Jihoon Oh and Jaewook Nam and Jang Wook Choi and Ali Coskun},
journal = {Joule},
year = {2026},
month = oct,
doi = {10.1016/j.joule.2026.102573},
url = {https://hal.science/hal-05794905v1},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - High energy-density, fast-chargeable lithium-ion batteries by mechanically interlocked polymers
AU - Gyuwon Seo
AU - Ahmed Elabd
AU - Seung Hyun Jeong
AU - Leonie Braks
AU - Taeyong Lee
AU - Kiho Park
AU - Jaemin Kim
AU - Sungchan Kim
AU - Soobin Lee
AU - Jihoon Oh
AU - Jaewook Nam
AU - Jang Wook Choi
AU - Ali Coskun
PY - 2026
DA - 2026/10/12
JO - Joule
DO - 10.1016/j.joule.2026.102573
UR - https://hal.science/hal-05794905v1
AB - Silicon anodes can play a key role in improving the energy density and fast-charging capability of lithium-ion batteries; however, their uncontrolled swelling remains a formidable hurdle in practice, particularly at a high electrode density, an essential parameter for high volumetric energy density. To address this challenge, we report here a polymeric poly(acrylic acid) binder with mechanically interlocked crosslinks to realize a topologically entangled polymer network. This binder system effectively dissipates the stress resulting from electrode calendering and repeated cycling via various mechanical motions at the mechanically interlocked crosslinks, which offer spatially homogeneous mechanical strength and elasticity. This design markedly improves the cycle life and fast-charging capability of silicon-graphite electrodes over those using conventional binders at high electrode densities, highlighting the usefulness of a mechanically interlocked polymer network in distributing the stress of high-capacity battery electrodes during their fabrication and operation.
SN - 2542-4351
ER -