A Kinetic Indicator of Ultrafast Nickel-Rich Layered Oxide Cathodes

Jian Wang; Hyejeong  Hyun; Sungjae  Seo; Kyeongjae  Jeong; Jeongwoo  Han; Sugeun  Jo; Hwiho  Kim; Bonho  Koo; Donggun  Eum; Juwon  Kim; Jinkyu  Chung; Hoon-Hwe  Cho; Heung Nam  Han; Tae Joo  Shin; Meng  Ni; Kisuk  Kang; Jongwoo  Lim

doi:10.1021/acsenergylett.3c00513

A Kinetic Indicator of Ultrafast Nickel-Rich Layered Oxide Cathodes

Jian Wang^*, Hyejeong Hyun, Sungjae Seo, Kyeongjae Jeong, Jeongwoo Han, Sugeun Jo, Hwiho Kim, Bonho Koo, Donggun Eum, Juwon Kim, Jinkyu Chung, Hoon-Hwe Cho, Heung Nam Han, Tae Joo Shin, Meng Ni, Kisuk Kang^*, Jongwoo Lim^*

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

24 Citations (Scopus)

Abstract

Elucidating high-rate cycling-induced nonequilibrium electrode reactions is crucial for developing extreme fast charging (XFC) batteries. Herein, we unveiled the distinct rate capabilities of a series of Ni-rich layered oxide (NRLO) cathodes by quantitatively establishing their dynamic structure–kinetics relationships. Contrary to conventional views, we discovered electrode kinetic properties obtained ex-situ near equilibrium states failed to assess the effective rate capability of NRLOs at ultrafast C rates. Further, the kinetic phase heterogeneity, characterized by the dynamic separations in in-situ X-ray diffraction patterns and deviations in NRLO c-axis lattice parameters, exclusively correlated with the capacity reduction under XFC and became an effective indicator of the NRLO rate capability. Enhancing the cycling temperature boosted the rate capability of studied NRLOs by ∼10%, which was further verified to mitigate the kinetic phase heterogeneity during XFC. Overall, this study lays the groundwork for tuning the kinetic phase heterogeneity of electrodes to develop ultrafast batteries. © 2023 American Chemical Society

Original language	English
Pages (from-to)	2986–2995
Journal	ACS Energy Letters
Volume	8
Issue number	7
Online published	13 Jun 2023
DOIs	https://doi.org/10.1021/acsenergylett.3c00513
Publication status	Published - 14 Jul 2023

Funding

The authors gratefully acknowledge the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2018M1A2A2063868, NRF-2019R1A4A1025848, NRF-2019M3E6A1065102, 2015M3D1A1070639, No. 2019R1A6A1A10073437, and No. NRF-2018R1C1B6006854). We express thanks to the staff and crew of the Seoul National University Electron Microscopy Facility (NCIRF), Research Institute of Advanced Materials (RIAM), the Institute of Applied Physics of Seoul National University and the Seoul National University Co-operative Flexible Transformative (SOFT) Foundry. J.W. gratefully acknowledges the SNU Science Fellowship (NRF-2019R1A6A1A10073437) funded by the Korean government (MSIT) and the grant from the City University of Hong Kong (Project No. 9610537). K.J., H.H.C., and H.N.H. acknowledge the support funded by the MSIT through projects NRF-2021R1A2C3005096, No. NRF-2019R1A6A3A13096198, and No. NRF-2018R1A5A1025224.

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title = "A Kinetic Indicator of Ultrafast Nickel-Rich Layered Oxide Cathodes",

abstract = "Elucidating high-rate cycling-induced nonequilibrium electrode reactions is crucial for developing extreme fast charging (XFC) batteries. Herein, we unveiled the distinct rate capabilities of a series of Ni-rich layered oxide (NRLO) cathodes by quantitatively establishing their dynamic structure–kinetics relationships. Contrary to conventional views, we discovered electrode kinetic properties obtained ex-situ near equilibrium states failed to assess the effective rate capability of NRLOs at ultrafast C rates. Further, the kinetic phase heterogeneity, characterized by the dynamic separations in in-situ X-ray diffraction patterns and deviations in NRLO c-axis lattice parameters, exclusively correlated with the capacity reduction under XFC and became an effective indicator of the NRLO rate capability. Enhancing the cycling temperature boosted the rate capability of studied NRLOs by ∼10%, which was further verified to mitigate the kinetic phase heterogeneity during XFC. Overall, this study lays the groundwork for tuning the kinetic phase heterogeneity of electrodes to develop ultrafast batteries. {\textcopyright} 2023 American Chemical Society",

author = "Jian Wang and Hyejeong Hyun and Sungjae Seo and Kyeongjae Jeong and Jeongwoo Han and Sugeun Jo and Hwiho Kim and Bonho Koo and Donggun Eum and Juwon Kim and Jinkyu Chung and Hoon-Hwe Cho and Han, {Heung Nam} and Shin, {Tae Joo} and Meng Ni and Kisuk Kang and Jongwoo Lim",

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doi = "10.1021/acsenergylett.3c00513",

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TY - JOUR

T1 - A Kinetic Indicator of Ultrafast Nickel-Rich Layered Oxide Cathodes

AU - Wang, Jian

AU - Hyun, Hyejeong

AU - Seo, Sungjae

AU - Jeong, Kyeongjae

AU - Han, Jeongwoo

AU - Jo, Sugeun

AU - Kim, Hwiho

AU - Koo, Bonho

AU - Eum, Donggun

AU - Kim, Juwon

AU - Chung, Jinkyu

AU - Cho, Hoon-Hwe

AU - Han, Heung Nam

AU - Shin, Tae Joo

AU - Ni, Meng

AU - Kang, Kisuk

AU - Lim, Jongwoo

PY - 2023/7/14

Y1 - 2023/7/14

N2 - Elucidating high-rate cycling-induced nonequilibrium electrode reactions is crucial for developing extreme fast charging (XFC) batteries. Herein, we unveiled the distinct rate capabilities of a series of Ni-rich layered oxide (NRLO) cathodes by quantitatively establishing their dynamic structure–kinetics relationships. Contrary to conventional views, we discovered electrode kinetic properties obtained ex-situ near equilibrium states failed to assess the effective rate capability of NRLOs at ultrafast C rates. Further, the kinetic phase heterogeneity, characterized by the dynamic separations in in-situ X-ray diffraction patterns and deviations in NRLO c-axis lattice parameters, exclusively correlated with the capacity reduction under XFC and became an effective indicator of the NRLO rate capability. Enhancing the cycling temperature boosted the rate capability of studied NRLOs by ∼10%, which was further verified to mitigate the kinetic phase heterogeneity during XFC. Overall, this study lays the groundwork for tuning the kinetic phase heterogeneity of electrodes to develop ultrafast batteries. © 2023 American Chemical Society

AB - Elucidating high-rate cycling-induced nonequilibrium electrode reactions is crucial for developing extreme fast charging (XFC) batteries. Herein, we unveiled the distinct rate capabilities of a series of Ni-rich layered oxide (NRLO) cathodes by quantitatively establishing their dynamic structure–kinetics relationships. Contrary to conventional views, we discovered electrode kinetic properties obtained ex-situ near equilibrium states failed to assess the effective rate capability of NRLOs at ultrafast C rates. Further, the kinetic phase heterogeneity, characterized by the dynamic separations in in-situ X-ray diffraction patterns and deviations in NRLO c-axis lattice parameters, exclusively correlated with the capacity reduction under XFC and became an effective indicator of the NRLO rate capability. Enhancing the cycling temperature boosted the rate capability of studied NRLOs by ∼10%, which was further verified to mitigate the kinetic phase heterogeneity during XFC. Overall, this study lays the groundwork for tuning the kinetic phase heterogeneity of electrodes to develop ultrafast batteries. © 2023 American Chemical Society

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U2 - 10.1021/acsenergylett.3c00513

DO - 10.1021/acsenergylett.3c00513

M3 - RGC 21 - Publication in refereed journal

SN - 2380-8195

VL - 8

SP - 2986

EP - 2995

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 7

ER -

A Kinetic Indicator of Ultrafast Nickel-Rich Layered Oxide Cathodes

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