A Liquid Electrolyte with De-Solvated Lithium Ions for Lithium-Metal Battery

Chang, Zhi; Qiao, Yu; Deng, Han; Yang, Huijun; He, Ping; Zhou, Haoshen

doi:10.1016/j.joule.2020.06.011

Cited by 161 publications

(114 citation statements)

References 39 publications

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“…Benefited from the narrow pore sizes of ZIF‐7 (2.9 Å), the common de‐solvation process of Li + was transferred from the surface of the reactive electrodes to the electrically insulating MOFs channels (Figure 16f). [ 126 ] In this new electrolyte interface, the existence of inactive frozen‐like solvent and de‐solvated Li + constituted crystal‐like lithium salt solute were confirmed. Owing to this unique configuration, the ether‐based electrolyte with de‐solvated Li + showed highly expanded oxidation stability (Figure 16g).…”

Section: Metal‐organic Framework For Lithium Metal Anodementioning

confidence: 82%

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Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Sun

Fan

et al. 2021

Advanced Energy Materials

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lithium-ion batteries (LIBs) have proven an unprecedented success in portable electronics, electric vehicles, grid storage, etc., which make a great difference in our lives. Hence, the 2019 Nobel Prize in Chemistry was awarded to John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino for their revolutionary work in the field of LIBs. [1] The current LIBs technology is based on insertion-compound anode and cathode materials. As shown in Figure 1, the capacities of the insertion-oxide cathodes have reached the limit of ≈250 mAh g −1 , and that of the graphite anode is also limited to ≈370 mAh g −1 . However, the limited capacities are unable to satisfy the ever-growing need for gravimetric and volumetric energy density. It is required topic to develop next generation energy technology. Targeting the goal, researchers have their sights set on alternative electrode materials. On the anode side, based on conversion reactions while accommodating more ions and electrons are becoming promising options. [2] Approaching mature silicon/ carbon anode elevates anode capacity well. [3] And lithium metal anode are also booming. [4] On the cathode side, multi-electron conversion reaction represented by sulfur and oxygen electrode can offer capacities exceed that of conventional insertion cathodes, such as, LiCoO 2 and LiMn 2 O 4 , by an order of magnitude (>1500 mAh g −1 ). Since 2009, lithium-sulfur (Li-S) batteries have received increasing attention and are considered as one of the most promising candidates for next-generation rechargeable batteries after the development of high-performance Li-S batteries by CMK-3 as host. [5] Sulfur, as one of the most abundant elements on earth, is an electrochemically active material that can accept two electrons per atom at ≈2.1 V (vs. Li + /Li). [6] As a result, sulfur cathode materials have high theoretical capacity of 1675 mAh g −1 , and Li-S batteries have theoretical energy density of ≈2600 Wh kg −1 . [7] However, the issues including low conductivity of S and Li 2 S, shuttle effect, large volumetric expansion, and unstable lithium metal anode have to face. [8] Up to now, intensive efforts in component regulation and structure engineering electrode materials have been focused on solving these issues.Sulfur cathodes with high sulfur content (>90 wt%), [9] excellent cycling life (>3000 cycles), [10] as well as, high operating Lithium-sulfur (Li-S) batteries, with high theoretical energy density, promise to be the optimal candidate of next-generation energy-storage. Rapid development in materials has made a major step forward in Li-S batteries. However, a big gap in cycle life and efficiency for practical applications still remains. Reasonable design of materials/electrodes a is significant aspect that must be addressed. The rising metal-organic frameworks (MOFs) are a new class of crystalline porous organic-inorganic hybrid materials. Abundant inorganic nodes and designable organic linkers allow tailored pore chemistry at a molecular-scale, which enables tunable interaction w...

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Section: Metal‐organic Framework For Lithium Metal Anodementioning

confidence: 82%

mentioning

confidence: 99%

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Sun

Fan

et al. 2021

Advanced Energy Materials

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“…More recently, Chang et al . have realized the de-solvated of a lithium-ion electrolyte through an ordered hole in the electrically insulated MOF [ 35 ]. Therefore, limiting some of the solvent molecules migration will increase the de-solvated process of Na + and the t Na+ .…”

Section: Resultsmentioning

confidence: 99%

Pancake-Like MOF Solid-State Electrolytes with Fast Ion Migration for High-Performance Sodium Battery

Zhang

Shu

et al. 2021

Nano-Micro Lett.

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Solid-state electrolyte (SSE) of the sodium-ion battery have attracted tremendous attention in the next generation energy storage materials on account of their wide electrochemical window and thermal stability. However, the high interfacial impedance, low ion transference number and complex preparation process restrict the application of SSE. Herein, inspired by the excellent sieving function and high specific surface area of red blood cells, we obtained a solid-like electrolyte (SLE) based on the combination of the pancake-like metal–organic framework (MOF) with liquid electrolyte, possessing a high ionic conductivity of 6.60 × 10–4 S cm−1, and excellent sodium metal compatibility. In addition, we investigated the ion restriction effect of MOF’s apertures size and special functional groups, and the ion transference number increased from 0.16 to 0.33. Finally, the assembled Na0.44MnO2//SLE//Na full batteries showed no obvious capacity decrease after 160 cycles. This material design of SLE in our work is an important key to obtain fast ion migration SLE for high-performance sodium-ion batteries."Image missing"

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“…In consideration of the size of TFSI anion (2.7 )and its first coordination shell size of one TGT-dominated conformer (3.4 ), this highly aggressive ion-pair can exclusively migrate through the MOFmodified channel (6.5 ). [18] Thes trengthened Li + -DME interaction also reduces the DME solvent activity,w hich is reflected on electrolyte flammability and oxidation. Both dilute and saturated LiTF-SI/DME solutions are combustible even under the absence of exogenous fire.Byconfinement ether electrolyte into MOF,it even maintains non-flammable under the presence of exog-enous fire (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

Designing Cation–Solvent Fully Coordinated Electrolyte for High‐Energy‐Density Lithium–Sulfur Full Cell Based On Solid–Solid Conversion

et al. 2021

Self Cite

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Sulfur chemistry based on solid-liquid dissolutiondeposition route inevitably encounters shuttle of lithium polysulfides,i ts parasitic interaction with lithium (Li)a node and flood electrolyte environment. The sulfurized pyrolyzed poly(acrylonitrile) (S@pPAN) cathode favors solid-solid conversion mechanism in carbonate ester electrolytes but fails to pair high-capacity Li anode.H erein, we rationally design ac ation-solvent fully coordinated ether electrolyte to simultaneously resolve the problems of both Li anode and S@pPAN cathode.R aman spectroscopyr eveals ah ighly suppressed solvent activity and acation-solvent fully coordinated structure (molar ratio 1:1). Consequently,Lielectrodeposit evolves into round-edged morphology,L iF-richi nterphase,a nd high reversibility.M oreover,S @pPAN cathode inherits an eat solid-phase redoxreaction and fully eliminated the dissolution of lithium polysulfides.F inally,w eh arvest al ong-life Li-S@pPAN pouchc ell with slight Li metal excessive (0.4 time) and ultra-lean electrolyte design (1 mLmg S À1), delivering 394 Wh kg À1 energy density based on electrodes and electrolyte mass.

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A Liquid Electrolyte with De-Solvated Lithium Ions for Lithium-Metal Battery

Cited by 161 publications

References 39 publications

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Pancake-Like MOF Solid-State Electrolytes with Fast Ion Migration for High-Performance Sodium Battery

Designing Cation–Solvent Fully Coordinated Electrolyte for High‐Energy‐Density Lithium–Sulfur Full Cell Based On Solid–Solid Conversion

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