Vinylene carbonate–LiNO3: A hybrid additive in carbonic ester electrolytes for SEI modification on Li metal anode

Guo, Jing; Zhang, Wen; Wu, Mingmei; Jin, Jun; Liu, Yu

doi:10.1016/j.elecom.2014.12.008

Cited by 253 publications

(149 citation statements)

References 24 publications

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“…As shown in Figure S14 (Supporting Information), the two C 1s spectra feature the same components, including CC, CO, lithium semicarbonates (ROCO 2 Li) and Li 2 CO 3 , but in different percentages. Specifically, the SEI of the a‐TiO 2 ‐BDC cell is richer in CO moieties, implying a polyether‐like layer on the top surface . Going deeper with Ar ion sputtering, we observed a thick layer of ROCO 2 Li/Li 2 CO 3 before reaching the Li 2 O region, as revealed by the O 1s depth profile (Figure 3k).…”

Section: Resultsmentioning

confidence: 84%

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Zhong

Lin

Wang

et al. 2020

Adv Funct Materials

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This work demonstrates a new approach in using metal organic framework (MOF) materials to improve Li metal batteries, a burgeoning rechargeable battery technology. Instead of using the MIL‐125‐Ti MOF structure directly, the material is decomposed into intimately‐mixed amorphous titanium dioxide and crystalline terephthalic acid. The resulting composite material outperforms the oxide alone, the organic component alone, and the parent MOF in suppressing Li dendrite growth and extending cycle life of Li metal electrodes. Coated on a commercial polypropylene separator, this material induces the formation of a desirable solid electrolyte interphase layer comprising mechanically flexible organic species and ionically conductive lithium nitride species, which in turn leads to Li||Cu and Li||Li cells that can stably operate for hundreds of charging–discharging cycles. In addition, this material strongly adsorbs lithium polysulfides and can also benefit the cathode of lithium–sulfur batteries.

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Section: Resultsmentioning

confidence: 84%

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Zhong

Lin

Wang

et al. 2020

Adv Funct Materials

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“…The results are similar to previously reported investigations with Li||Cu cells and demonstrate the feasibility of Cu||LiFePO 4 cells for developing electrolytes for lithium metal electrodes. 10,28 With this knowledge, advantageous characteristics of Cu||LiFePO 4 cells can be exploited when investigating other electrolyte additives. Specifically, other additives which can generate polymer surface films are under investigation and will be reported in the future.…”

Section: Discussionmentioning

confidence: 99%

“…[17][18][19][20][21][22][23][24] Further, the reaction products of VC with lithium have been investigated in detail, using Li||Ni cells [25][26][27] and Li||Cu cells, 10,28 and found to have beneficial performance, typically attributed to poly(VC) within the SEI. However, the effect of added VC has not been investigated with lithium metal anodes in cells without a large excess of lithium.…”

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confidence: 99%

Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu||LiFePO₄Cells

Brown

Jurng

Lucht

2017

J. Electrochem. Soc.

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The influence of vinylene carbonate (VC) on the plating/stripping of lithium was investigated using Cu||LiFePO 4 cells. These cells allow for easy fabrication and in-situ generation of lithium, with no excess lithium to influence performance. Addition of VC to the electrolyte improves both capacity retention and efficiency. IR and XPS spectroscopy of the surface of the plated lithium suggests the presence of a significant amount of poly(VC) when the electrolyte (1.2 M LiPF 6 in ethylene carbonate (EC): ethyl methyl carbonate (EMC) (3:7, vol)) contains 5% of added VC. This suggests employing additives that generate polymeric species on the surface of lithium improves plating/stripping performance in carbonate electrolytes. The plating and stripping of the lithium metal negative electrode in non-aqueous electrolytes has been investigated for decades.1-3 In particular, carbonate solvents have relatively high voltage stability, making them desirable electrolytes for high-energy density lithium batteries.3-6 However, the efficiency of plating/stripping lithium in carbonate electrolytes does not meet requirements for commercial application (> 99.9%). 7,8 It is common to measure the plating/stripping efficiency of lithium by assembling Li||Cu cells. [9][10][11][12][13] In this cell design, a small amount of Li is cycled, with an excess reservoir of lithium present. One limitation of this cell design is the difficulty of controlling the design and construction of the solid electrolyte interphase 14 (SEI) on lithium, as the low reduction potential of the lithium metal electrode present during cell construction will cause immediate reaction with electrolyte upon exposure. Thus, a reaction between the electrolyte and the lithium metal electrode will occur before cycling begins. Further, the excess lithium within the cell can significantly increase the cycle life of the cell making it difficult to compare to commercial cells, with a limited supply of lithium.Contrary to Li||Cu cells, Cu||LiFePO 4 cells have air-stable components, facilitating their processing and assembly. 15,16 Further, the in-situ formation of lithium metal and low reactivity of LiFePO 4 ensures additives under investigation do not react with the electrode surface upon construction and are only reduced upon initial cycling. This affords the possibility for controlled design and construction of the SEI on lithium metal since the reduction of the electrolyte can be controlled by current density, cell potential, and the quantity of lithium plated. Finally, given that there is no excess lithium in Cu||LiFePO 4 cells, any observed improvements in capacity retention, Coulombic efficiency, or impedance should be applicable to other lithium metal based battery systems.Vinylene carbonate (VC) is a well known electrolyte additive for lithium-ion batteries, demonstrating exceptional performance for graphite and several cathode materials. [17][18][19][20][21][22][23][24] Further, the reaction products of VC with lithium have been investigated in detail, using Li||Ni ...

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“…In contrast, several approaches have been reported for preventing/retarding Li dendrite proliferation in Li metal batteries 11, 12 . Some of the approaches include using high modulus electrolyte or nanoporous/tortuous separator 14, 20–22 , modifying the ion transport in electrolytes by using single ion conductors and ionic liquids 23–27 , or forming a stable electrode-electrolyte interface to suppress the nucleation of dendrites 4, 13, 28–30 . In addition to preventing dendrite induced short circuits, the last approach may impede unwanted parasitic reactions between the electrode and electrolyte that lead to formation of insulating products and loss of electrochemically active material, causing decay in the battery capacity with increasing charge-discharge cycles 12 .…”

Section: Introductionmentioning

confidence: 99%

Designing solid-liquid interphases for sodium batteries

et al. 2017

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Secondary batteries based on earth-abundant sodium metal anodes are desirable for both stationary and portable electrical energy storage. Room-temperature sodium metal batteries are impractical today because morphological instability during recharge drives rough, dendritic electrodeposition. Chemical instability of liquid electrolytes also leads to premature cell failure as a result of parasitic reactions with the anode. Here we use joint density-functional theoretical analysis to show that the surface diffusion barrier for sodium ion transport is a sensitive function of the chemistry of solid–electrolyte interphase. In particular, we find that a sodium bromide interphase presents an exceptionally low energy barrier to ion transport, comparable to that of metallic magnesium. We evaluate this prediction by means of electrochemical measurements and direct visualization studies. These experiments reveal an approximately three-fold reduction in activation energy for ion transport at a sodium bromide interphase. Direct visualization of sodium electrodeposition confirms large improvements in stability of sodium deposition at sodium bromide-rich interphases.

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Vinylene carbonate–LiNO3: A hybrid additive in carbonic ester electrolytes for SEI modification on Li metal anode

Cited by 253 publications

References 24 publications

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu||LiFePO₄Cells

Designing solid-liquid interphases for sodium batteries

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Vinylene carbonate–LiNO3: A hybrid additive in carbonic ester electrolytes for SEI modification on Li metal anode

Cited by 253 publications

References 24 publications

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu||LiFePO4Cells

Designing solid-liquid interphases for sodium batteries

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Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu||LiFePO₄Cells