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Akademický článek

Gas–solid interfacial modification of oxygen activity in layered oxide cathodes for lithium-ion batteries

Autor: Bao Qiu, Minghao Zhang, Lijun Wu, Jun Wang, Yonggao Xia, Danna Qian, Haodong Liu, Sunny Hy, Yan Chen, Ke An, Yimei Zhu, Zhaoping Liu, Ying Shirley Meng

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)

Oxygen activity can play a vital role in determining charge transport properties of materials. Here, the authors demonstrate a method to create oxygen vacancies on layered oxides via a gas-solid interface reaction, leading to materials with enhanced

Externí odkaz: https://doaj.org/article/7fb66daafb7344b3a81c9a336f36e577

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Diagnosing and correcting anode-free cell failure via electrolyte and morphological analysis

Autor: Matt Coon, A. J. Louli, Matthew Genovese, Remi Petibon, Zhe Deng, Shawn J. H. Cheng, Jack deGooyer, Rochelle Weber, J. R. Dahn, Sunny Hy, Thomas Rodgers, Robin T. White, A. Eldesoky, Jaehan Lee

Publikováno v: Nature Energy. 5:693-702

Anode-free lithium metal cells store 60% more energy per volume than conventional lithium-ion cells. Such high energy density can increase the range of electric vehicles by approximately 280 km or even enable electrified urban aviation. However, thes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1aa87713b05f5d166bda8632588d61b5
https://doi.org/10.1038/s41560-020-0668-8

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Impact of Graphite Materials on the Lifetime of NMC811/Graphite Pouch Cells: Part II. Long-Term Cycling, Stack Pressure Growth, Isothermal Microcalorimetry, and Lifetime Projection

Autor: A. Eldesoky, E. R. Logan, A. J. Louli, Wentao Song, Rochelle Weber, Sunny Hy, Remi Petibon, J. E. Harlow, S. Azam, E. Zsoldos, J. R. Dahn

Publikováno v: Journal of The Electrochemical Society. 169:010501

Part II of this 2-part series examines the impact of competitive graphite materials on NMC811 pouch cell performance using Ultra-High Precision Coulometry (UHPC), isothermal microcalorimetry, and in-situ stack growth. A simple lifetime projection of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f10c53c7d62e756e4b1503c7ec743ac3
https://doi.org/10.1149/1945-7111/ac42f1

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A synergistic 'cascade' effect in copper zinc tin sulfide nanowalls for highly stable and efficient lithium ion storage

Autor: Li-Chyong Chen, Jian-Ming Chiu, Tsu-Chin Chou, Deniz P. Wong, Sunny Hy, Kuei-Hsien Chen, Chin-An Shen, Heng-Liang Wu, Bing-Joe Hwang, Yian Tai, Yi-Rung Lin

Publikováno v: Nano Energy. 44:438-446

Applications of lithium ion battery have been hampered by a lack of ideal anode materials in terms of capacity and stability. The emergence of metal chalcogenide as a candidate material has reinvigorated the search of a low cost and high capacity mat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5a2eb37de499037492061232d6b3cf0
https://doi.org/10.1016/j.nanoen.2017.12.020

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Identifying the chemical and structural irreversibility in LiNi0.8Co0.15Al0.05O2 – a model compound for classical layered intercalation

Publikováno v: Journal of Materials Chemistry A. 6:4189-4198

In this work, we extracted 95% of the electrochemically available Li from LiNi0.8Co0.15Al0.05O2 (NCA) by galvanostatically charging the NCA/MCMB full cell to 4.7 V. Joint powder X-ray and neutron diffraction (XRD & ND) studies were undertaken for NCA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86a41baa9039538c9b0c3134b4b5b413
https://doi.org/10.1039/c7ta10829j

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Impact of Graphite Materials on the Lifetime of NMC811/Graphite Pouch Cells: Part I. Material Properties, ARC Safety Tests, Gas Generation, and Room Temperature Cycling

Autor: Wentao Song, J. R. Dahn, Rochelle Weber, A. Eldesoky, Michel B. Johnson, Sunny Hy, S. Azam, Michael Metzger, Michael K. G. Bauer, Eniko Zsoldos

Publikováno v: Journal of The Electrochemical Society. 168:110543

The impact of graphite materials on capacity retention in Li-ion cells is important to understand since Li inventory loss due to SEI formation, and cross-talk reactions between the positive and negative electrodes, are important cell failure mechanis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d862503af995cca05273a9a6820b8822
https://doi.org/10.1149/1945-7111/ac39fc

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Synthesis of Single Crystal LiNi0.5Mn0.3Co0.2O2for Lithium Ion Batteries

Autor: Sunny Hy, Jing Li, Will Stone, Hongyang Li, Rochelle Weber, J. R. Dahn

Publikováno v: Journal of The Electrochemical Society. 164:A3529-A3537

Single crystal Li[Ni0.5Mn0.3Co0.2]O2 materials in NMC532/artificial graphite cells have excellent long term charge-discharge cycle lifetime which greatly exceeds that of conventional NMC532 materials. There are a few patents from industry regarding t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::659d7320cc27c7d4589af8326edb686d
https://doi.org/10.1149/2.0401714jes

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