Effect of vinylene carbonate as additive to electrolyte for lithium metal anode

Ota, Hitoshi; Shima, Kunihisa; Ue, Makoto; Yamaki, Jun‐ichi

doi:10.1016/j.electacta.2003.09.010

Cited by 371 publications

(346 citation statements)

References 31 publications

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“…In order to alleviate the negative impact of the P-O species on the surface chemistry of P-doped soft carbon, vinylene carbonate (VC), which has been widely used as an additive for forming a stable solid electrolyte interphase (SEI), was introduced. [21][22][23][24][25][26] Indeed, the discharge capacity retention of Pdoped soft carbon was drastically improved at 60 o C, as shown in Figure 9. This is likely because VC modified the soft carbon electrode/electrolyte interface and suppressed the reductive decomposition of the P-O species formed on the soft carbon electrode by P-doping.…”

mentioning

confidence: 99%

Effects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes

Kim¹,

Yeon²,

Hong³

et al. 2013

Bulletin of the Korean Chemical Society

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The impact of phosphorous (P)-doping on the electrochemical performance and surface chemistry of soft carbon is investigated by means of galvanostatic cycling and ex situ X-ray photoelectron spectroscopy (XPS). P-doping plays an important role in storing more Li ions and discernibly improves reversible capacity. However, the discharge capacity retention of P-doped soft carbon electrodes deteriorated at 60 o C compared to non-doped soft carbon. This poor capacity retention could be improved by vinylene carbonate (VC) participating in forming a protective interfacial chemistry on soft carbon. In addition, the effect of P-doping on exothermic thermal reactions of lithiated soft carbon with electrolyte solution is discussed on the basis of differential scanning calorimetry (DSC) results.

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confidence: 99%

Effects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes

Kim¹,

Yeon²,

Hong³

et al. 2013

Bulletin of the Korean Chemical Society

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“…Although various polymeric and ceramic electrolytes have been demonstrated to suppress lithium dendrite growth [14][15][16][17][18][19][20] , their ionic conductivity, interfacial impedance, mechanical moduli or chemical stability when in contact with metallic lithium were not satisfying and still need further improvement for their implementation. In liquid electrolytes, many additives including organic and inorganic compounds have been used to improve the stability of the SEI layer [21][22][23][24][25] . However, the low solubility of many additives in the electrolyte and their rapid consumption during cycling undermines their effectiveness in suppressing dendrite growth.…”

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confidence: 99%

“…Among various approaches to overcoming the issues of lithium metal anode, it is recognized that electrolyte selection is one of the most dominant factors for stabilizing the lithium metal surface [14][15][16][17][18][19][20][21][22][23][24][25][26][27] . Although various polymeric and ceramic electrolytes have been demonstrated to suppress lithium dendrite growth [14][15][16][17][18][19][20] , their ionic conductivity, interfacial impedance, mechanical moduli or chemical stability when in contact with metallic lithium were not satisfying and still need further improvement for their implementation.…”

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confidence: 99%

The synergetic effect of lithium polysulfide and lithium nitrate to prevent lithium dendrite growth

et al. 2015

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Lithium metal has shown great promise as an anode material for high-energy storage systems, owing to its high theoretical specific capacity and low negative electrochemical potential. Unfortunately, uncontrolled dendritic and mossy lithium growth, as well as electrolyte decomposition inherent in lithium metal-based batteries, cause safety issues and low Coulombic efficiency. Here we demonstrate that the growth of lithium dendrites can be suppressed by exploiting the reaction between lithium and lithium polysulfide, which has long been considered as a critical flaw in lithium-sulfur batteries. We show that a stable and uniform solid electrolyte interphase layer is formed due to a synergetic effect of both lithium polysulfide and lithium nitrate as additives in ether-based electrolyte, preventing dendrite growth and minimizing electrolyte decomposition. Our findings allow for re-evaluation of the reactions regarding lithium polysulfide, lithium nitrate and lithium metal, and provide insights into solving the problems associated with lithium metal anodes.

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“…Most approaches to the prevention of lithium dendrite formation have focused on improving the stability and uniformity of the solid electrolyte interphase (SEI) 13 layer produced between lithium metal and the electrolyte by the addition of SEI formation additives such as CO 2 , SO 2 14 and vinylene carbonate. 15 However, these additives are ineffective in suppressing lithium dendrite during long-term operation, because they are consumed during formation of the SEI films. More recently, new liquid electrolytes have been proposed to suppress the lithium dendrite formation by many groups.…”

Section: Introductionmentioning

confidence: 99%

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

2016

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Lithium metal is the most attractive anode material for batteries because of its high specific capacity (3861 mAh g −1 ) and low negative potential (−3.04 V vs. NHE). However, lithium dendrite growth during lithium deposition leads to serious safety problems and poor cycling performance. The conventional liquid electrolyte used in lithium-ion batteries results in significant lithium dendrite formation at room temperature and a high current density. Thus, there has been much research effort to achieve the suppression of lithium dendrite formation. Recently, a new class of non-aqueous liquid electrolyte with a high concentration of lithium salts, such as solvated ionic liquid and solvent-in-salt electrolytes, has been reported to suppress lithium dendrite formation. Solid polymer electrolytes have been known to suppress lithium dendrite formation; however, the low lithium ion conductivity and high interface resistance between lithium and the polymer electrolyte at room temperature limits their use for conventional batteries. The interface resistance was significantly decreased by the addition of an ionic liquid into a polymer electrolyte and lithium dendrite formation was suppressed. A theoretical analysis predicted that if a homogenous solid electrolyte with a shear modulus of 6 GPa was obtained, then the lithium dendrite problem would be solved. However, some lithium conducting solid electrolytes such as Li 7 La 3 Zr 2 O 12 still exhibit lithium dendrite formation. In this review, we introduce the recent status of lithium dendrite formation on lithium metal in contact with liquid, solid polymer, and solid electrolytes.

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Effect of vinylene carbonate as additive to electrolyte for lithium metal anode

Cited by 371 publications

References 31 publications

Effects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes

Effects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes

The synergetic effect of lithium polysulfide and lithium nitrate to prevent lithium dendrite growth

Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes

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