Enhanced Lithium Transport by Control of Crystal Orientation in Spinel LiMn2O4 Thin Film Cathodes
Ron Hendriks,Daniel M. Cunha,Deepak P. Singh,Mark Huijben +3 more
- Vol. 1, Iss: 12, pp 7046-7051
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TLDR
It is shown that by structural engineering of stable, epitaxial LiMn2O4 thin films the electrochemical properties can be enhanced as compared to polycrystalline samples.Abstract:
A promising cathode material for rechargeable batteries is LiMn2O4, which exhibits higher operating voltage, reduced toxicity and lower costs as compared to commonly used LiCoO2 cathodes. However, LiMn2O4 suffers from limited cycle life, as excessive capacity fading occurs during battery cycling due to dissolution of Mn into the acidic electrolyte. Here, we show that by structural engineering of stable, epitaxial LiMn2O4 thin films the electrochemical properties can be enhanced as compared to polycrystalline samples. Control of the specific crystal orientation of the LiMn2O4 thin films resulted in dramatic differences in surface morphology with pyramidal, rooftop or flat features for respectively (100), (110), and (111) orientations. All three types of LiMn2O4 films expose predominantly ⟨111⟩ crystal facets, which is the lowest energy state surface for this spinel structure. The (100)-oriented LiMn2O4 films exhibited the highest capacities and (dis)charging rates up to 33C, and good cyclability over a th...read more
Citations
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Pulsed Laser Deposited Films for Microbatteries
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TL;DR: A survey of the literature on pulsed laser deposited thin film materials used in devices for energy storage and conversion is presented in this paper, where three classes of materials are considered: positive electrode materials (cathodes), solid electrolytes, and negative electrode material (anodes).
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Tunnel Intergrowth Li x MnO 2 Nanosheet Arrays as 3D Cathode for High-Performance All-Solid-State Thin Film Lithium Microbatteries.
Qiuying Xia,Qinghua Zhang,Shuo Sun,Fiaz Hussain,Chunchen Zhang,Xiaohui Zhu,Fanqi Meng,Kaiming Liu,Hao Geng,Jing Xu,Feng Zan,Peng Wang,Lin Gu,Hui Xia +13 more
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Distribution (function) of relaxation times, successor to complex nonlinear least squares analysis of electrochemical impedance spectroscopy?
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The improved performance of spinel LiMn2O4 cathode with micro-nanostructured sphere-interconnected-tube morphology and surface orientation at extreme conditions for lithium-ion batteries
Chunying Xu,Jili Li,Xiangyu Feng,Junwei Zhao,Chunjuan Tang,Baoming Ji,Ji Hu,Chuanbao Cao,Youqi Zhu,Faheem K. Butt,Faheem K. Butt +10 more
TL;DR: In this article, LiMn2O4 (LMO) cathodes with surface specific facets and different morphologies are successfully controlled synthesized via a facile solvothermal-lithiation method.
References
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