Trimethylsilyl Chloride-Modified Li Anode for Enhanced Performance of Li–S Cells

Wu, Mingmei; Zhang, Wen; Jin, Jun; Chowdari, B. V. R.

doi:10.1021/acsami.6b02612

Cited by 53 publications

(35 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To summarize, the methods of overcoming the challenges of the Li/S battery include: reducing the solubility of the polysulfides by adding toluene to THF, 9 increasing the concentration of the supporting electrolyte, 15 encapsulation of the sulfur species (S or Li 2 S) in several types of cages [24][25][26] and using polysulfide barriers and modified separators. [27][28][29] Modification of the electrolyte by the addition of nitrate, as proposed by Aurbach, 30 and film formation on the anode by its reaction with (CH 3 ) 3 SiCl, 31 were found to minimize the reaction of polysulfides with the anode, thus leading to longer cycle life.…”

Section: A5002mentioning

confidence: 99%

The Effect of Binders on the Performance and Degradation of the Lithium/Sulfur Battery Assembled in the Discharged State

Peled

Goor

Schektman

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

Capacity fading on cycling of lithium/sulfur batteries may result from at least four processes: increase of SEI thickness resistance, loss of cathode capacity (precipitation of sulfur species outside the cathode), agglomeration and thickening of sulfur species and increase in cell impedance as a result of reduction of the electrolyte. A very important issue that has not been properly addressed up to now is the influence of the type and content of the cathode binder on the cell parameters and on the electrochemical performance of lithium/sulfur batteries. We present here a detailed analysis and discussion of the electrochemical behavior, during prolonged cycling, of Li2S-based cathodes containing five different binders. The binders under investigation are: poly(vinylidene fluoride) (PVDF-HFP), polyvinylpyrrolidone (PVP), mix of PVP with polyethylene imine (PEI), polyaniline (PANI) and lithium polyacrylate (LiPAA). Sulfur utilization in the cathode follows the order of LiPAA > PVP:PEI > PVP > PVDF-HFP > PANI. Depending on the type of binder, cells provide 500 to 1400 mAh/g (S), 94.6–98.0% faradaic efficiency and enable more than 500 reversible cycles.

show abstract

Section: A5002mentioning

confidence: 99%

The Effect of Binders on the Performance and Degradation of the Lithium/Sulfur Battery Assembled in the Discharged State

Peled

Goor

Schektman

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Trimethylsilyl chloride,102 LiI,103 lithium bis(oxalato)borate,104 LiNO 3 ,105, 106 CsPF 6 ,107 LiF,108 hexamethylditin,109 and lanthanum nitrate110) are also benefited for robust nanostructured SEI formation in a working cell. Consequently, the additives can reduce the Li dendrite growth in the Li metal batteries, because the presence of additives can modify the Li surface chemistry and thus strongly affect the Coulombic efficiency of Li plating/stripping.…”

Section: Micro/nanostructured Solid Electrolyte Interphasementioning

confidence: 99%

Advanced Micro/Nanostructures for Lithium Metal Anodes

et al. 2017

View full text Add to dashboard Cite

Owning to their very high theoretical capacity, lithium metal anodes are expected to fuel the extensive practical applications in portable electronics and electric vehicles. However, unstable solid electrolyte interphase and lithium dendrite growth during lithium plating/stripping induce poor safety, low Coulombic efficiency, and short span life of lithium metal batteries. Lately, varies of micro/nanostructured lithium metal anodes are proposed to address these issues in lithium metal batteries. With the unique surface, pore, and connecting structures of different nanomaterials, lithium plating/stripping processes have been regulated. Thus the electrochemical properties and lithium morphologies have been significantly improved. These micro/nanostructured lithium metal anodes shed new light on the future applications for lithium metal batteries.

show abstract

“…Wen's group proposed several efficient agents to protect Li metal anode in Li−S batteries, such as Li 3 N layer through in-situ reaction between Li and N 2 , 106 (CH 3 ) 3 SiCl layer by exposing Li foils to tetrahydrofuran (THF) solvent, oxygen atmosphere, and (CH 3 ) 3 SiCl liquid in sequence. 107 The Li−S battery with a Li 3 N protective layer on Li anode exhibits a discharge capacity of 773 mAh g −1 after 500 cycles with an average Coulombic effciency of 92.3% at 0.5 C without LiNO 3 additive (Figure 12). 106 Surface coating is another facile and cost-effective method to deposit a protective layer onto Li metal anode, which can be conveniently applied in the practical Li−S batteries.…”

Section: Metal Protection In Li−s Batteriesmentioning

confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

251

170

View full text Add to dashboard Cite

Due to the high theoretical energy density of 2600 Wh kg −1 , lithium-sulfur batteries are strongly regarded as the promising nextgeneration energy storage devices. However, the practical applications of lithium-sulfur batteries are challenged by several obstacles, including the low sulfur utilization and poor lifespan, which are partly attributed to the shuttle of lithium polysulfides and lithium dendrite growth in working lithium-sulfur batteries. Suppressing lithium dendrite growth is a necessary step not only for a safe and efficient Li metal anode, but also for a high capacity cell with a high Coulombic efficiency. Herein we review the lithium metal anode protection in a polysulfide-rich environment, relative to most reviews on lithium metal anode without considering the effect of lithium polysulfides in lithium metal batteries. Firstly, the importance and dilemma of Li metal anode issues in lithium-sulfur batteries are underscored, aiming to arouse the attentions to Li metal anode protection. Specific attentions are paid to the surface chemistry of Li metal anode in a polysulfide-rich lithium-sulfur battery. Next, the proposed strategies to stabilize solid electrolyte interface and protect Li metal anode are included. Finally, a general conclusion and a perspective on the current limitations, as well as recommended future research directions of Li metal anode in lithium-sulfur batteries are presented. The ever-increasing requirement for efficient and economic energy storage technologies has triggered the continued research into advanced battery systems.1 Lithium ion batteries, based on the lithium intercalation chemistry, have dominated the battery market since their commercial application in the 1990s.2 However, conventional lithium ion batteries are very expensive and their energy densities (theoretically, 350 − 500 Wh kg −1 , practically, 100 − 250 Wh kg −1 ) seem insufficient for long-range electrical vehicles and high-end portable electronics. These emerging demands have energized the evolution of other alternative rechargeable batteries with higher energy density and longer lifespan.3 Lithium−sulfur (Li−S) battery, a 'beyond Li-ion' technology, has drawn extensive attentions due to its high specific capacity (1675 mAh g −1 ) and energy density (2600 Wh kg −1 ). 4-6The greater energy storage ability of Li−S batteries is realized through the phase-transformation electrochemistry based on elemental sulfur cathode and metallic lithium anode [S 8 + 16Li ↔ 8Li 2 S], 7,8 which is fundamentally different from current transition metal-based cathodes and graphite-based anodes in Li-ion batteries.The conversion chemistry in a Li−S cell offers not only significant advantages as mentioned above, but also some critical challenges, such as the low conductivity of sulfur and lithium sulfide, the huge volumetric change from sulfur (71 mol L −1 ) to lithium sulfide (36 mol L −1 ), and the shuttle of long-chain polysulfide intermediates during discharge/charge cycling.9-12 Therefore, a composite cathode with sulfur in ...

show abstract

Trimethylsilyl Chloride-Modified Li Anode for Enhanced Performance of Li–S Cells

Cited by 53 publications

References 60 publications

The Effect of Binders on the Performance and Degradation of the Lithium/Sulfur Battery Assembled in the Discharged State

The Effect of Binders on the Performance and Degradation of the Lithium/Sulfur Battery Assembled in the Discharged State

Advanced Micro/Nanostructures for Lithium Metal Anodes

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Contact Info

Product

Resources

About