Cobalt-doped lithium-rich cathode with superior electrochemical performance for lithium-ion batteries

Yuan, Bing; Liao, Shi-Xuan; Yan, Xin; Zhong, Yanjun; Shi, Xiaxing; Li, Longyan; Guo, Xiaodong

doi:10.1039/c4ra11894d

Cited by 11 publications

(8 citation statements)

References 16 publications

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“…Techniques based more on solid state physics are also very popular. Lattice substitution for Al, Mg, Ti among other elements can help to prevent the phase changes, limiting voltage decay or improve the conductivity . Though scientifically insightful, most of the reported lab scale tests cannot be scaled to the commercial level.…”

Section: Next‐generation Li‐ion Battery Researchmentioning

confidence: 99%

30 Years of Lithium‐Ion Batteries

et al. 2018

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Over the past 30 years, significant commercial and academic progress has been made on Li-based battery technologies. From the early Li-metal anode iterations to the current commercial Li-ion batteries (LIBs), the story of the Li-based battery is full of breakthroughs and back tracing steps. This review will discuss the main roles of material science in the development of LIBs. As LIB research progresses and the materials of interest change, different emphases on the different subdisciplines of material science are placed. Early works on LIBs focus more on solid state physics whereas near the end of the 20th century, researchers began to focus more on the morphological aspects (surface coating, porosity, size, and shape) of electrode materials. While it is easy to point out which specific cathode and anode materials are currently good candidates for the next-generation of batteries, it is difficult to explain exactly why those are chosen. In this review, for the reader a complete developmental story of LIB should be clearly drawn, along with an explanation of the reasons responsible for the various technological shifts. The review will end with a statement of caution for the current modern battery research along with a brief discussion on beyond lithium-ion battery chemistries.

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Section: Next‐generation Li‐ion Battery Researchmentioning

confidence: 99%

30 Years of Lithium‐Ion Batteries

et al. 2018

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“…From the structural point of view, doping elements that could enhance a material's electrical conduction and/or expand interplanar spacing of (003) planes without damaging the layered structure could greatly decrease the kinetic barrier for Li + ion diffusion and enable a superior rate capability. Generally, a suitable amount of Co is beneficial for improving the electrical conductivities and decreasing the activation energy of the charge transfer process in LMR cathodes, which enhances the discharge capacity of LMR cathodes at different current densities and also improves the low temperature performance . Doping with cations such as Ru, Sn, or Mo has been reported to expand the interslab spacing and increase the rate capability of LMR cathode materials though with different compositions.…”

Section: Rate Capability Of Lmr Cathode Materialsmentioning

confidence: 99%

Li‐ and Mn‐Rich Cathode Materials: Challenges to Commercialization

Zheng

Myeong

Cho

et al. 2016

Advanced Energy Materials

418

302

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Lithium ion batteries (LIBs) have received worldwide attention as power sources for electric vehicles (EVs) and portable energy storage. [1] However, research to address the limited cycle life, rate capability, energy density, safety concern and cost issue of commercialized LiCoO 2 (LCO), LiNi x Mn y Co z O 2 (NMC), LiNi 0.80 Co 0.15 Al 0.05 O 2 (NCA) and LiFePO 4 (LFP) is still ongoing for their large-scale application in EVs and the electricity grid. [1b] The lithium-and manganese-rich (LMR) layered structure cathode materials xLi 2 MnO 3 ·(1−x)LiMO 2 (M = Ni, Co, Mn or combinations) have entered the spotlight becauseThe lithium-and manganese-rich (LMR) layered structure cathodes exhibit one of the highest specific energies (≈900 W h kg −1 ) among all the cathode materials. However, the practical applications of LMR cathodes are still hindered by several significant challenges, including voltage fade, large initial capacity loss, poor rate capability and limited cycle life. Herein, we review the recent progress and in depth understandings on the application of LMR cathode materials from a practical point of view. Several key parameters of LMR cathodes that affect the LMR/graphite full-cell operation are systematically analyzed. These factors include the first-cycle capacity loss, voltage fade, powder tap density, and electrode density. New approaches to minimize the detrimental effects of these factors are highlighted in this work. We also provide perspectives for the future research on LMR cathode materials, focusing on addressing the fundamental problems of LMR cathodes while keeping practical considerations in mind. Center. Cho' current research is focused on high-energydensity cathode and anode materials and their direct implantation in ful-cell systems, as well as metal-air batteries and redox flow batteries for energy storage.Ji-Guang (Jason) Zhang is a Laboratory Fellow of the Pacific Northwest National Laboratory. He is the group leader for PNNL's efforts in energy storage for transportation applications and has 25-year experience in the development of energy storage devices, including Li-ion batteries, Li-air batteries, Li-metal batteries, Li-S batteries, and thin-film solid-state batteries.

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“…In our previous study, carbon-coated Li 2 MoO 3 composites were successfully prepared, and they achieved much lower impedances and better electrochemical performances than bare Li 2 MoO 3 [21]. Cobalt doping has been considered to be a facile and effective method in enhancing the electrochemical performances, since it can improve structure stability and reduce the impedance of cathode materials [22,23,24,25,26]. In this paper, cobalt was selected to improve the electrochemical performances of Li 2 MoO 3 for the first time.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Performances of Cobalt-Doped Li2MoO3 Cathode Materials

Hao

Wen-ji

et al. 2019

Materials

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Co-doped Li2MoO3 was successfully synthesized via a solid phase method. The impacts of Co-doping on Li2MoO3 have been analyzed by X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR) measurements. The results show that an appropriate amount of Co ions can be introduced into the Li2MoO3 lattices, and they can reduce the particle sizes of the cathode materials. Electrochemical tests reveal that Co-doping can significantly improve the electrochemical performances of the Li2MoO3 materials. Li2Mo0.90Co0.10O3 presents a first-discharge capacity of 220 mAh·g−1, with a capacity retention of 63.6% after 50 cycles at 5 mA·g−1, which is much better than the pristine samples (181 mAh·g−1, 47.5%). The enhanced electrochemical performances could be due to the enhancement of the structural stability, and the reduction in impedance, due to the Co-doping.

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Cobalt-doped lithium-rich cathode with superior electrochemical performance for lithium-ion batteries

Abstract: Cobalt doped to modify the structure of lithium-rich cathode and obtain the material with superior electrochemical performance.

Cited by 11 publications

References 16 publications

30 Years of Lithium‐Ion Batteries

30 Years of Lithium‐Ion Batteries

Li‐ and Mn‐Rich Cathode Materials: Challenges to Commercialization

Enhanced Electrochemical Performances of Cobalt-Doped Li2MoO3 Cathode Materials

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