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Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders

[Image: see text] High-nickel layered oxides, e.g., LiNi(0.8)Co(0.1)Mn(0.1)O(2) (NCM811), are promising candidates for cathode materials in high-energy-density lithium-ion batteries (LIBs). Complementing the notable developments of modification of active materials, this study focused on the polymer...

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Autores principales: Liu, Tong, Parekh, Rohan, Mocny, Piotr, Bloom, Brian P., Zhao, Yuqi, An, So Young, Pan, Bonian, Yin, Rongguan, Waldeck, David H., Whitacre, Jay F., Matyjaszewski, Krzysztof
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10548467/
https://www.ncbi.nlm.nih.gov/pubmed/37800127
http://dx.doi.org/10.1021/acsmaterialslett.3c00485
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author Liu, Tong
Parekh, Rohan
Mocny, Piotr
Bloom, Brian P.
Zhao, Yuqi
An, So Young
Pan, Bonian
Yin, Rongguan
Waldeck, David H.
Whitacre, Jay F.
Matyjaszewski, Krzysztof
author_facet Liu, Tong
Parekh, Rohan
Mocny, Piotr
Bloom, Brian P.
Zhao, Yuqi
An, So Young
Pan, Bonian
Yin, Rongguan
Waldeck, David H.
Whitacre, Jay F.
Matyjaszewski, Krzysztof
author_sort Liu, Tong
collection PubMed
description [Image: see text] High-nickel layered oxides, e.g., LiNi(0.8)Co(0.1)Mn(0.1)O(2) (NCM811), are promising candidates for cathode materials in high-energy-density lithium-ion batteries (LIBs). Complementing the notable developments of modification of active materials, this study focused on the polymer binder materials, and a new synthetic route was developed to engineer PVDF binders by covalently grafting copolymers from poly(vinylidene fluoride-co-chlorotrifluoroethylene) (PVDF-CTFE) with multiple functionalities using atom transfer radical polymerization (ATRP). The grafted random copolymer binder provided excellent flexibility (319% elongation), adhesion strength (50 times higher than PVDF), transition metal chelation capability, and efficient ionic conductivity pathways. The NCM811 half-cells using the designed binders exhibited a remarkable rate capability of 143.4 mA h g(–1) at 4C and cycling stability with 70.1% capacity retention after 230 cycles at 0.5 C, which is much higher than the 52.3% capacity retention of nonmodified PVDF. The well-retained structure of NCM811 with the designed binder was systematically studied and confirmed by post-mortem analysis.
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spelling pubmed-105484672023-10-05 Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders Liu, Tong Parekh, Rohan Mocny, Piotr Bloom, Brian P. Zhao, Yuqi An, So Young Pan, Bonian Yin, Rongguan Waldeck, David H. Whitacre, Jay F. Matyjaszewski, Krzysztof ACS Mater Lett [Image: see text] High-nickel layered oxides, e.g., LiNi(0.8)Co(0.1)Mn(0.1)O(2) (NCM811), are promising candidates for cathode materials in high-energy-density lithium-ion batteries (LIBs). Complementing the notable developments of modification of active materials, this study focused on the polymer binder materials, and a new synthetic route was developed to engineer PVDF binders by covalently grafting copolymers from poly(vinylidene fluoride-co-chlorotrifluoroethylene) (PVDF-CTFE) with multiple functionalities using atom transfer radical polymerization (ATRP). The grafted random copolymer binder provided excellent flexibility (319% elongation), adhesion strength (50 times higher than PVDF), transition metal chelation capability, and efficient ionic conductivity pathways. The NCM811 half-cells using the designed binders exhibited a remarkable rate capability of 143.4 mA h g(–1) at 4C and cycling stability with 70.1% capacity retention after 230 cycles at 0.5 C, which is much higher than the 52.3% capacity retention of nonmodified PVDF. The well-retained structure of NCM811 with the designed binder was systematically studied and confirmed by post-mortem analysis. American Chemical Society 2023-08-25 /pmc/articles/PMC10548467/ /pubmed/37800127 http://dx.doi.org/10.1021/acsmaterialslett.3c00485 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Liu, Tong
Parekh, Rohan
Mocny, Piotr
Bloom, Brian P.
Zhao, Yuqi
An, So Young
Pan, Bonian
Yin, Rongguan
Waldeck, David H.
Whitacre, Jay F.
Matyjaszewski, Krzysztof
Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title_full Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title_fullStr Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title_full_unstemmed Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title_short Tailored PVDF Graft Copolymers via ATRP as High-Performance NCM811 Cathode Binders
title_sort tailored pvdf graft copolymers via atrp as high-performance ncm811 cathode binders
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10548467/
https://www.ncbi.nlm.nih.gov/pubmed/37800127
http://dx.doi.org/10.1021/acsmaterialslett.3c00485
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