Suspension electrolyte with modified Li+ solvation environment for lithium metal batteries

Kim, Mun Sek; Zhang, Zewen; Rudnicki, Paul E.; Yu, Zhiao; Wang, Jingyang; Wang, Hansen; Oyakhire, Solomon T.; Chen, Yuelang; Kim, Sang Cheol; Zhang, Wenbo; Boyle, David T.; Kong, Xian; Xu, Rong; Huang, Zhuojun; Huang, William; Bent, Stacey F.; Wang, Lin‐Wang; Qin, Jian; Bao, Zhenan; Cui, Yi

doi:10.1038/s41563-021-01172-3

Cited by 191 publications

(136 citation statements)

References 54 publications

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“…57,58 Inorganic components are believed to be beneficial to the improvement of SEI/CEI performance, as verified by experiments. Adding Li 2 S nanoparticles in SEI and Li 2 O nanoparticles in electrolytes could boost the cycling stability, 24,59 and Li 3 N and LiF also exhibited positive impacts on Li battery performance. 21,60 In addition, Li + could diffuse quickly in the grain boundary among Li 2 S, Li 3 N, Li 2 O, and LiF.…”

Section: Anion Regulationmentioning

confidence: 99%

Structural regulation chemistry of lithium ion solvation for lithium batteries

Wang

et al. 2022

EcoMat

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The performance of Li batteries is influenced by the Li+ solvation structure, which can be precisely adjusted by the components of the electrolytes. In this review, we overview the strategies for optimizing electrolyte solvation structures from three different perspectives, including anion regulation, binding energy regulation, and additive regulation. These strategies can optimize the composition of the electrode‐electrolyte interface, enhance the anti‐oxidative stability of electrolytes as well as regulate the behaviors of anions, solvents, and Li+ during the cycling process. Moreover, we also provide our insights into these aspects as well as present perspectives on high‐performance Li batteries.

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Section: Anion Regulationmentioning

confidence: 99%

Structural regulation chemistry of lithium ion solvation for lithium batteries

Wang

et al. 2022

EcoMat

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“…Over the past few years, several strategies including optimization of electrolyte, modification of current collector, and adjustment of testing parameters have been devoted to improving the electrochemical performance of Li metal batteries by constructing favorable solid electrolyte interphase (SEI) and optimization of delithiation process [ 10 – 13 ]. The development of dual-salt electrolyte, local high-concentration electrolyte or novel electrolyte chemistry could enhance the Coulombic efficiency (CE) of plated Li metal on bare Cu up to 99.5%, which could fulfill the critical requirement of realistic anode-free Li metal batteries [ 14 – 18 ]. However, the volume fluctuation derived from continuous Li plating/stripping on planar current collector should be also took into account, especially in the practical pouch cells [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Commercially Viable Hybrid Li-Ion/Metal Batteries with High Energy Density Realized by Symbiotic Anode and Prelithiated Cathode

Lin

Xu²,

Qin

et al. 2022

Nano-Micro Lett.

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The energy density of commercial lithium (Li) ion batteries with graphite anode is reaching the limit. It is believed that directly utilizing Li metal as anode without a host could enhance the battery’s energy density to the maximum extent. However, the poor reversibility and infinite volume change of Li metal hinder the realistic implementation of Li metal in battery community. Herein, a commercially viable hybrid Li-ion/metal battery is realized by a coordinated strategy of symbiotic anode and prelithiated cathode. To be specific, a scalable template-removal method is developed to fabricate the porous graphite layer (PGL), which acts as a symbiotic host for Li ion intercalation and subsequent Li metal deposition due to the enhanced lithiophilicity and sufficient ion-conducting pathways. A continuous dissolution-deintercalation mechanism during delithiation process further ensures the elimination of dead Li. As a result, when the excess plating Li reaches 30%, the PGL could deliver an ultrahigh average Coulombic efficiency of 99.5% for 180 cycles with a capacity of 2.48 mAh cm−2 in traditional carbonate electrolyte. Meanwhile, an air-stable recrystallized lithium oxalate with high specific capacity (514.3 mAh g−1) and moderate operating potential (4.7–5.0 V) is introduced as a sacrificial cathode to compensate the initial loss and provide Li source for subsequent cycles. Based on the prelithiated cathode and initial Li-free symbiotic anode, under a practical-level 3 mAh capacity, the assembled hybrid Li-ion/metal full cell with a P/N ratio (capacity ratio of LiNi0.8Co0.1Mn0.1O2 to graphite) of 1.3 exhibits significantly improved capacity retention after 300 cycles, indicating its great potential for high-energy-density Li batteries.

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“…[ 2–4 ] However, the sluggish ion diffusion and high charge‐transfer resistance in metallic lithium anodes especially at high rates dramatically aggravate lithium dendrite growth and intensify volume change, leading to rapid electrolyte consumption, low Coulombic efficiency (CE), and capacity decay of LMBs. [ 5–7 ]…”

Section: Introductionmentioning

confidence: 99%

Low‐Tortuous MXene (TiNbC) Accordion Arrays Enabled Fast Ion Diffusion and Charge Transfer in Dendrite‐Free Lithium Metal Anodes

Cao

Chen

et al. 2022

Advanced Energy Materials

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The widespread implementation of lithium metal anodes is indispensable for reviving high energy density lithium metal batteries. However, the sluggish ion diffusion and high charge‐transfer resistance in metallic lithium anodes hamper their rate capability and practical applications. Here, low tortuous MXene arrays are developed through the ultrafast spreading of an aqueous accordion‐like TiNbC‐MXene dispersion onto a hydrophobic surface. The low tortuous MXene arrays facilitate the fast infiltration of electrolytes, enabling the rapid diffusion of lithium ions. The MXene arrays with Nb species significantly improve the charge transfer in the electrode, homogenizing the electric field. Thus, the low tortuous MXene arrays constructed electrode without lithium dendrites delivers a high‐rate capability (20 mA cm−2) with a long cycle life (2500 cycles). Full cells with the dendrite, low tortuosity MXene arrays as anode show a high rate cycle stability up to 1000 cycles (4 C) under conditions of low negative/positive capacity ratio (2.0).

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Suspension electrolyte with modified Li+ solvation environment for lithium metal batteries

Cited by 191 publications

References 54 publications

Structural regulation chemistry of lithium ion solvation for lithium batteries

Structural regulation chemistry of lithium ion solvation for lithium batteries

Commercially Viable Hybrid Li-Ion/Metal Batteries with High Energy Density Realized by Symbiotic Anode and Prelithiated Cathode

Low‐Tortuous MXene (TiNbC) Accordion Arrays Enabled Fast Ion Diffusion and Charge Transfer in Dendrite‐Free Lithium Metal Anodes

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