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
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Journal ArticleDOI
Progress in electrolytes for rechargeable Li-based batteries and beyond
TL;DR: In this article, the authors introduce five types of electrolytes for room temperature Li-based batteries including nonaqueous electrolytes, aqueous solutions, ionic liquids, polymer electrolytes and hybrid electrolytes.
Journal ArticleDOI
Double-Layer Polymer Electrolyte for High-Voltage All-Solid-State Rechargeable Batteries.
Weidong Zhou,Zhaoxu Wang,Yuan Pu,Yutao Li,Sen Xin,Xiaofang Li,Jian-Feng Chen,John B. Goodenough +7 more
TL;DR: A double-layer polymer electrolyte is investigated, in which one polymer provides dendrite-free plating of a Li-metal anode and the other allows a Li+ extraction from an oxide host cathode without oxidation of the electrolyte in a 4 V cell over a stable charge/discharge cycling at 65 °C.
Journal ArticleDOI
In situ quantification of interphasial chemistry in Li-ion battery
Tongchao Liu,Tongchao Liu,Lingpiao Lin,Xuanxuan Bi,Lei-Lei Tian,Kai Yang,Jiajie Liu,Maofan Li,Zonghai Chen,Jun Lu,Khalil Amine,Khalil Amine,Kang Xu,Feng Pan +13 more
TL;DR: It is found that SEI formation starts at graphite edge sites with dimerization of solvated Li+ intercalation between graphite layers, and it is shown that this lithium salt can be re-oxidized, despite the general belief that an SEI is electrochemically inert and its formation irreversible.
Journal ArticleDOI
Langmuir–Blodgett artificial solid-electrolyte interphases for practical lithium metal batteries
Mun Sek Kim,Ji-Hyun Ryu,Ji-Hyun Ryu,Deepika,Young Rok Lim,Young Rok Lim,In Wook Nah,Kwang-Ryeol Lee,Lynden A. Archer,Won Il Cho +9 more
TL;DR: In this paper, the physicochemical characteristics of Langmuir-Blodgett artificial SEIs (LBASEIs) created using phosphate-functionalized reduced graphene oxides are reported.
Journal ArticleDOI
Estimating Hybridization of Transition Metal and Oxygen States in Perovskites from O K-edge X-ray Absorption Spectroscopy
Jin Suntivich,Wesley T. Hong,Yueh-Lin Lee,James M. Rondinelli,Wanli Yang,John B. Goodenough,Bogdan Dabrowski,John W. Freeland,Yang Shao-Horn +8 more
TL;DR: In this article, a dipole approximation and the configuration interaction between the transition metal 3d and the oxygen 2p states were used to assess the trend of hybridization in transition metal oxide materials.
References
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TL;DR: Some of the recent scientific advances in nanomaterials, and especially in nanostructured materials, for rechargeable lithium-ion batteries are reviewed.