Journal ArticleDOI
Challenges for Rechargeable Li Batteries
John B. Goodenough,Youngsik Kim +1 more
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TLDR
In this paper, the authors reviewed the challenges for further development of Li rechargeable batteries for electric vehicles and proposed a nonflammable electrolyte with either a larger window between its lowest unoccupied molecular orbital and highest occupied molecular orbital (HOMO) or a constituent that can develop rapidly a solid/ electrolyte-interface (SEI) layer to prevent plating of Li on a carbon anode during a fast charge of the battery.Abstract:
The challenges for further development of Li rechargeable batteries for electric vehicles are reviewed. Most important is safety, which requires development of a nonflammable electrolyte with either a larger window between its lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) or a constituent (or additive) that can develop rapidly a solid/ electrolyte-interface (SEI) layer to prevent plating of Li on a carbon anode during a fast charge of the battery. A high Li-ion conductivity (σ Li > 10 ―4 S/cm) in the electrolyte and across the electrode/ electrolyte interface is needed for a power battery. Important also is an increase in the density of the stored energy, which is the product of the voltage and capacity of reversible Li insertion/extraction into/from the electrodes. It will be difficult to design a better anode than carbon, but carbon requires formation of an SEI layer, which involves an irreversible capacity loss. The design of a cathode composed of environmentally benign, low-cost materials that has its electrochemical potential μ C well-matched to the HOMO of the electrolyte and allows access to two Li atoms per transition-metal cation would increase the energy density, but it is a daunting challenge. Two redox couples can be accessed where the cation redox couples are "pinned" at the top of the O 2p bands, but to take advantage of this possibility, it must be realized in a framework structure that can accept more than one Li atom per transition-metal cation. Moreover, such a situation represents an intrinsic voltage limit of the cathode, and matching this limit to the HOMO of the electrolyte requires the ability to tune the intrinsic voltage limit. Finally, the chemical compatibility in the battery must allow a long service life.read more
Citations
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Interface Engineering for Lithium Metal Anodes in Liquid Electrolyte
Journal ArticleDOI
Review on Li Deposition in Working Batteries: From Nucleation to Early Growth.
TL;DR: Inspired by the abovementioned understanding on Li nucleation and early growth, diverse anode-design strategies, which contribute to better batteries with superior electrochemical performance and dendrite-free deposition behavior, are also summarized.
Journal ArticleDOI
Study of the lithium/nickel ions exchange in the layered LiNi0.42Mn0.42Co0.16O2 cathode material for lithium ion batteries: experimental and first-principles calculations
Haijun Yu,Yumin Qian,Minoru Otani,Minoru Otani,Dai-Ming Tang,Shaohua Guo,Yanbei Zhu,Haoshen Zhou,Haoshen Zhou +8 more
TL;DR: In this article, the impact of Li+/Ni2+ ion exchange on the crystal/electronic structure, electrochemical performance and stress are investigated in detail, and the results show that there are obvious anisotropic stress and smaller inter-slab space of the unit cell associated with greater Li+ /Ni2+, ion exchange.
Journal ArticleDOI
Fluorine-Doped Antiperovskite Electrolyte for All-Solid-State Lithium-Ion Batteries.
Yutao Li,Weidong Zhou,Sen Xin,Sen Xin,Shuai Li,Jinlong Zhu,Xujie Lü,Zhiming Cui,Quanxi Jia,Jianshi Zhou,Yusheng Zhao,John B. Goodenough +11 more
TL;DR: A fluorine-doped antiperovskiteLi-ion conductor Li2 (OH)X (X=Cl, Br) is shown to be a promising candidate for a solid electrolyte in an all-solid-state Li-ion rechargeable battery.
Journal ArticleDOI
Interface Issues and Challenges in All-Solid-State Batteries: Lithium, Sodium, and Beyond.
TL;DR: The purpose here is to outline the current interface issues and challenges, allowing for target-oriented research for solid-state electrochemical energy storage and current trends and future perspectives in interfacial engineering are presented.
References
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Journal ArticleDOI
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Journal ArticleDOI
Nanomaterials for rechargeable lithium batteries
TL;DR: Some of the recent scientific advances in nanomaterials, and especially in nanostructured materials, for rechargeable lithium-ion batteries are reviewed.