Li2NiO2 as a sacrificing positive additive for lithium-ion batteries

Park, Hosang; Yoon, Taeho; Kim, Young‐Ugk; Ryu, Ji Heon; Oh, Seung M.

doi:10.1016/j.electacta.2013.06.117

Cited by 75 publications

(63 citation statements)

References 11 publications

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“…materials can also be used as pre-lithiation additives for LIBs. Li 2 NiO 2 was proposed as one of those materials and exhibited a lithiation and de-lithiation capacity of 340 mAh g −1 and 83 mAh g −1 , respectively, in a Li metal cell cycled between 3.5 V to 4.4 V vs. Li/Li + [125]. After the first cycle, the additive exhibited a Coulombic efficiency of 97% with a de-lithiation capacity of 76 mAh g −1 .…”

Section: Pre-lithiation By Using Positive Electrode Additivesmentioning

confidence: 99%

“…Fourthly, the pre-lithiation agent has to be not only electrochemically stable but also thermally, chemically and mechanically stable after de-lithiation. The investigated additives range from binary compounds, such as Li2S [115,116], Li3N [117,118], LiN3 [119], Li2O [114,120], Li2O2 [121] or LiF [122], to ternary compounds, such as Li5FeO4 [123], Li2NiO2 [124,125], Li6CoO4 [126] or Li2MoO3 [127].…”

Section: Pre-lithiation By Using Positive Electrode Additivesmentioning

confidence: 99%

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Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

et al. 2018

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Abstract:In order to meet the sophisticated demands for large-scale applications such as electro-mobility, next generation energy storage technologies require advanced electrode active materials with enhanced gravimetric and volumetric capacities to achieve increased gravimetric energy and volumetric energy densities. However, most of these materials suffer from high 1st cycle active lithium losses, e.g., caused by solid electrolyte interphase (SEI) formation, which in turn hinder their broad commercial use so far. In general, the loss of active lithium permanently decreases the available energy by the consumption of lithium from the positive electrode material. Pre-lithiation is considered as a highly appealing technique to compensate for active lithium losses and, therefore, to increase the practical energy density. Various pre-lithiation techniques have been evaluated so far, including electrochemical and chemical pre-lithiation, pre-lithiation with the help of additives or the pre-lithiation by direct contact to lithium metal. In this review article, we will give a comprehensive overview about the various concepts for pre lithiation and controversially discuss their advantages and challenges. Furthermore, we will critically discuss possible effects on the cell performance and stability and assess the techniques with regard to their possible commercial exploration.

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Section: Pre-lithiation By Using Positive Electrode Additivesmentioning

confidence: 99%

Section: Pre-lithiation By Using Positive Electrode Additivesmentioning

confidence: 99%

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

et al. 2018

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“…For the first cycle of charge/discharge, three identically conditioned cells were tested for repeatability. As a promising sacrificing positive additive providing surplus Li-ion to a counter (negative) electrode, an irreversible capacity of the first cycle is generally considered as a key point index for the L2N material [3]. The P-L2N and C-L2N showed 261 to 265 and 177 to 185 m Ah g -1 of irreversible capacity at the first cycle.…”

Section: Resultsmentioning

confidence: 99%

“…This decomposition can be favorable in one sense, since the solid electrolyte interphase (SEI) passivates the surface of the electrode and prevents further decomposition of the electrolyte. The stabilized SEI film resulted in reasonable coulombic efficiency and cycle performance [1][2][3][4]. However, the electrolyte decomposition is not beneficial with respect to the specific energy of LIBs.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Decomposition Study on Li2O2 for Li2NiO2 Synthesis as a Sacrificing Positive Additive of Lithium-Ion Batteries

et al. 2019

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Herein, thermal decomposition experiments of lithium peroxide (Li2O2) were performed to prepare a precursor (Li2O) for sacrificing cathode material, Li2NiO2. The Li2O2 was prepared by a hydrometallurgical reaction between LiOH·H2O and H2O2. The overall reaction during annealing was found to involve the following three steps: (1) dehydration of LiOH·H2O, (2) decomposition of Li2O2, and (3) pyrolysis of the remaining anhydrous LiOH. This stepwise reaction was elucidated by thermal gravimetric and quantitative X-ray diffraction analyses. Furthermore, over-lithiated lithium nickel oxide (Li2NiO2) using our lithium precursor was synthesized, which exhibited a larger yield of 90.9% and higher irreversible capacity of 261 to 265 mAh g−1 than the sample prepared by commercially purchased Li2O (45.6% and 177 to 185 mAh g−1, respectively) due to optimal powder preparation conditions.

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Advancements in Prelithiation Technology: Transforming Batteries from Li‐Shortage to Li‐Rich Systems

Zhong,

Zeng,

Cheng

et al. 2023

Adv Funct Materials

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The sufficient and reversible active lithium is the cornerstone for the operation of high‐energy lithium‐ion batteries. However, active lithium is inevitably depleted due to the formation of a solid electrolyte and the presence of irreversible side reactions. The shortage of lithium in optimally designed batteries not only leads to a depreciation of energy density but also deteriorates the electrode structure resulting in degradation of cycle life. Inspiringly, prelithiation technology that additionally compensates for lithium has been proposed and is playing an increasingly significant role in enhancing battery energy density and prolonging cycle life. Herein, guided by the factors that initiate lithium loss, the action mechanism and the effectiveness of prelithiation are scrutinized. Moreover, the emerging advanced prelithiation technologies based on anode/cathode materials, the key barriers, and the applicability at scale are systematically summarized and compared. Integrating the challenges and development trends aspires to provide a comprehensive prelithiated hybrid lithium replenishment and storage technology as a reference in the scale‐up of prelithiation technologies.

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Li2NiO2 as a sacrificing positive additive for lithium-ion batteries

Cited by 75 publications

References 11 publications

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

Thermal Decomposition Study on Li2O2 for Li2NiO2 Synthesis as a Sacrificing Positive Additive of Lithium-Ion Batteries

Advancements in Prelithiation Technology: Transforming Batteries from Li‐Shortage to Li‐Rich Systems

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