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Gao, Ziyao (author), Zhao, C. (author), Zhou, Kai (author), Wu, Junru (author), Tian, Yao (author), Deng, Xianming (author), Zhang, Lihan (author), Lin, Kui (author), Wagemaker, M. (author)Nickel-rich layered oxide cathodes promise ultrahigh energy density but is plagued by the mechanical failure of the secondary particle upon (de)lithiation. Existing approaches for alleviating the structural degradation could retard pulverization, yet fail to tune the stress distribution and root out the formation of cracks. Herein, we report...journal article 2024
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Zhang, S. (author), Li, Yuhang (author), Bannenberg, L.J. (author), Liu, Ming (author), Ganapathy, S. (author), Wagemaker, M. (author)Formation cycling is a critical process aimed at improving the performance of lithium ion (Li-ion) batteries during subsequent use. Achieving highly reversible Li-metal anodes, which would boost battery energy density, is a formidable challenge. Here, formation cycling and its impact on the subsequent cycling are largely unexplored. Through...journal article 2024
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Wang, Zaifa (author), Wang, Zhenyu (author), Xue, Dingchuan (author), Zhao, Jun (author), Zhang, Xuedong (author), Geng, Lin (author), Li, Yanshuai (author), Du, Congcong (author), Wagemaker, M. (author)The rock-salt phase (RSP) formed on the surface of Ni-rich layered cathodes in liquid-electrolyte lithium-ion batteries is conceived to be electrochemically "dead". Here we show massive RSP forms in the interior of LiNi<sub>x</sub>Mn<sub>y</sub>Co<sub>(1−x-y)</sub>O<sub>2</sub> (NMC) crystals in sulfide based all solid state batteries (ASSBs)...journal article 2023
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Liang, Jianwen (author), van der Maas, E.L. (author), Luo, Jing (author), Li, Xiaona (author), Chen, Ning (author), Adair, Keegan R. (author), Li, Weihan (author), Li, Junjie (author), Hu, Yongfeng (author), Liu, Jue (author), Zhang, Li (author), Zhao, W. (author), Parnell, S.R. (author), Ganapathy, S. (author), Wagemaker, M. (author)Understanding the relationship between structure, ionic conductivity, and synthesis is the key to the development of superionic conductors. Here, a series of Li<sub>3-3</sub><sub>x</sub>M<sub>1+</sub><sub>x</sub>Cl<sub>6</sub> (−0.14 < x ≤ 0.5, M = Tb, Dy, Ho, Y, Er, Tm) solid electrolytes with orthorhombic and trigonal structures are...journal article 2022
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Liu, M. (author), Zhang, S. (author), van Eck, Ernst R.H. (author), Wang, C. (author), Ganapathy, S. (author), Wagemaker, M. (author)The development of commercial solid-state batteries has to date been hindered by the individual limitations of inorganic and organic solid electrolytes, motivating hybrid concepts. However, the room-temperature conductivity of hybrid solid electrolytes is still insufficient to support the required battery performance. A key challenge is to...journal article 2022
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Cheng, Zhu (author), Liu, M. (author), Ganapathy, S. (author), Li, Z. (author), Zhang, Xiaoyu (author), He, Ping (author), Zhou, Haoshen (author), Wagemaker, M. (author), Li, Chau (author)The influence of space-charge layers on the ionic charge transport over cathode-solid electrolyte interfaces in all-solid-state batteries remains unclear because of the difficulty to unravel it from other contributions to the ion transport over the interfaces. Here, we reveal the effect of the space-charge layers by systematically tuning the...journal article 2020
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Yu, C. (author), Hageman, J.G. (author), Ganapathy, S. (author), van Eijck, L. (author), Zhang, Long (author), Adair, Keegan R. (author), Sun, Xueliang (author), Wagemaker, M. (author)The ultrafast ionic conductivity of Li <sub>6</sub> PS <sub>5</sub> Br, which is higher than 1 mS cm <sup>-1</sup> at room temperature, makes it an attractive candidate electrolyte for the all-solid-state Li-S battery. A simple synthesis route with an easy scale up process is critical for practical applications. In this work, the highest room...journal article 2019
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Yu, C. (author), Ganapathy, S. (author), Hageman, J.G. (author), van Eijck, L. (author), Van Eck, Ernst R.H. (author), Zhang, Long (author), Schwietert, T.K. (author), Basak, S. (author), Kelder, E.M. (author), Wagemaker, M. (author)The high Li-ion conductivity of the argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl makes it a promising solid electrolyte candidate for all-solid-state Li-ion batteries. For future application, it is essential to identify facile synthesis procedures and to relate the synthesis conditions to the solid electrolyte material performance. Here, a...journal article 2018
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Yu, C. (author), Ganapathy, S. (author), van Eck, Ernst R H (author), van Eijck, L. (author), Basak, S. (author), Liu, Yanyan (author), Zhang, Long (author), Zandbergen, H.W. (author), Wagemaker, M. (author)Based on its high Li-ion conductivity, argyrodite Li6PS5Br is a promising solid electrolyte for all-solid-state batteries. However, more understanding is required on the relation between the solid electrolyte conductivity and the solid-state battery performance with the argyrodite structure, crystallinity and particle size that depend on the...journal article 2017
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Direct view on the phase evolution in individual LiFePO4 nanoparticles during Li-ion battery cyclingZhang, X. (author), Van Hulzen, M. (author), Singh, D.P. (author), Brownrigg, A.W. (author), Wright, J.P. (author), Van Dijk, N.H. (author), Wagemaker, M. (author)Phase transitions in Li-ion electrode materials during (dis)charge are decisive for battery performance, limiting high-rate capabilities and playing a crucial role in the cycle life of Li-ion batteries. However, the difficulty to probe the phase nucleation and growth in individual grains is hindering fundamental understanding and progress. Here...journal article 2015