A Facile and Efficient Chemical Prelithiation of Graphite for Full Capacity Utilization of Li‐Ion Batteries

Luo, Yang; Deng, Yulin; Shen, Yifei; Li, Hui; Cao, Yuliang; Ai, Xinping

doi:10.1002/ente.202200269

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…The unique solvent effect provides new possibilities for the applications of Naph-Li. [54] For Si-based anode, the potential of Naph-Li prelithiation of SiO in the solvent of methyl butyl ether was 0.21 V. [55] The concentration of Naph-Li and immersion time need to be controlled during prelithiation of amorphous Si. The concentration of Naph and the lithiation time were optimized to 0.5 m and 1 h, respectively.…”

Section: Liquid Lithium-containing Reagentmentioning

confidence: 99%

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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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Section: Liquid Lithium-containing Reagentmentioning

confidence: 99%

Section: Liquid Lithium-containing Reagentmentioning

confidence: 99%

See 1 more Smart Citation

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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Engineering of Aromatic Naphthalene and Solvent Molecules to Optimize Chemical Prelithiation for Lithium‐Ion Batteries

Patra,

Lu,

Kao

et al. 2024

Advanced Science

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A cost‐effective chemical prelithiation solution, which consists of Li+, polyaromatic hydrocarbon (PAH), and solvent, is developed for a model hard carbon (HC) electrode. Naphthalene and methyl‐substituted naphthalene PAHs, namely 2‐methylnaphthalene and 1‐methylnaphthalene, are first compared. Grafting an electron‐donating methyl group onto the benzene ring can decrease electron affinity and thus reduce the redox potential, which is validated by density functional theory calculations. Ethylene glycol dimethyl ether (G1), diethylene glycol dimethyl ether, and triethylene glycol dimethyl ether solvents are then compared. The G1 solution has the highest conductivity and least steric hindrance, and thus the 1‐methylnaphthalene/G1 solution shows superior prelithiation capability. In addition, the effects of the interaction time between Li+ and 1‐methylnaphthalene in G1 solvent on the electrochemical properties of a prelithiated HC electrode are investigated. Nuclear magnetic resonance data confirm that 10‐h aging is needed to achieve a stable solution coordination state and thus optimal prelithiation efficacy. It is also found that appropriate prelithiation creates a more Li+‐conducing and robust solid‐electrolyte interphase, improving the rate capability and cycling stability of the HC electrode.

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Molecular Engineering Chemical Pre‐lithiation Reagent with Low Redox Potential for Graphite Anode Enables High Coulombic Efficiency

Li,

Jiang,

Feng

et al. 2024

Small

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Graphite (Gr) is a low‐cost and high‐stability anode for lithium‐ion batteries (LIBs). However, Gr anode exhibits an obstinate drawback of low initial Coulombic efficiency (ICE), owing to the active lithium loss for the solid electrolyte interphase (SEI) layer. Herein, a straightforward and effective chemical pre‐lithiation strategy is proposed to compensate for the lithium loss. A molecular engineering phenanthrene‐based lithium‐arene complex (Ph‐based LAC) reagent is designed by density functional theory (DFT) calculations. The engineering Ph‐based reagent enhances the stability of the π‐electron system and the electron‐donating capacity, resulting in a reduced redox potential to facilitate lithium transfer. The electrochemical distinct of the Ph‐based reagent is illustrated, the prelithiation process in a low Li‐insertion platform, and the lithiation degree is controllable with the dipping time (ICE = 102%, 3 min). Notably, a denser and homogeneous SEI layer has pre‐formed to enhance the Li+ transport and interface stability. Moreover, the lithium‐ion full batteries assemble with LiFePO4 and NCM811 cathode, which exhibits high ICE (96.5% and 90.3%) and energy density (310 and 333 Wh kg−1). These findings present a facile and controllable pre‐lithiation strategy to compensate for the lithium of LIBs, providing new valuable insights into the design and optimization of battery manufacture.

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A Facile and Efficient Chemical Prelithiation of Graphite for Full Capacity Utilization of Li‐Ion Batteries

Cited by 7 publications

References 32 publications

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

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

Engineering of Aromatic Naphthalene and Solvent Molecules to Optimize Chemical Prelithiation for Lithium‐Ion Batteries

Molecular Engineering Chemical Pre‐lithiation Reagent with Low Redox Potential for Graphite Anode Enables High Coulombic Efficiency

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