Recent progress in Li–S and Li–Se batteries

Zeng, Linchao; Li, Wei-Han; Jiang, Yu; Yu, Yan

doi:10.1007/s12598-017-0891-z

Cited by 92 publications

(39 citation statements)

References 161 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1 ) and higher conductivity of 1 × 10 −3 S m -1 and 2.3 × 10 −5 S m -1 , respectively, which are superior to that of elemental S (5 × 10 −21 S m -1 ). Se has been used as the cathode material and Li-Se battery has gained extensive research interests of scientists [35][36][37] . Recently, studies on Se x S 1-x PAN-Li battery show that Se doping can improve the electrochemical performance of SPAN [37,38] .…”

Section: Introductionmentioning

confidence: 99%

Te0.045S0.955PAN composite with high average discharge voltage for Li–S battery

Wang

Guan

Jin³

et al. 2019

Journal of Energy Chemistry

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Te0.045S0.955PAN composite with high average discharge voltage for Li–S battery

Wang

Guan

Jin³

et al. 2019

Journal of Energy Chemistry

View full text Add to dashboard Cite

“…However, the microporous carbon architecture of electrospun CNFs is not conducive to the large loading of active materials, and the electrolyte has a certain limitation on the infiltration of the active material in the micropores. Consequentially, the existence of all pore architectures of electrospun carbon is the best choice to satisfy the requirements of the final Li‐S cathode . So as to effectively enhance the specific surface area and porosity of electrospun CNFs, some researchers have tested plenty of effective methodologies, such as KOH post‐treatment activation and removal of porogen .…”

Section: Cathodementioning

confidence: 99%

A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

Liu

Deng

et al. 2019

Adv Funct Materials

168

View full text Add to dashboard Cite

Lithium-sulfur (Li-S) batteries are in the spotlight because their outstanding theoretical specific energy is much higher than those of the commercial lithium ion (Li-ion) batteries. Li-S batteries are tough competitors for futuredeveloping energy storage in the fields of portable electronics and electric vehicles. However, the severe "shuttle effect" of the polysulfides and the serious damage of lithium dendrites are main factors blocking commercial production of Li-S batteries. Owing to their superior nanostructure, electrospun nanofiber materials commonly show some unique characteristics that can simultaneously resolve these issues. So far, various novel cathodes, separators, and interlayers of electrospun nanofiber materials which are applied to resolve these challenges are researched. This review presents the fundamental research and technological development of multifarious electrospun nanofiber materials for Li-S cells, including their processing methods, structures, morphology engineering, and electrochemical performance. Not only does the review article contain a summary of electrospun nanofiber materials in Li-S batteries but also a proposal for designing electrospun nanofiber materials for Li-S cells. These systematic discussions and proposed directions can enlighten thoughts and offer ways in the reasonable design of electrospun nanofiber materials for excellent Li-S batteries in the near future.or conducting coagulation bath) is placed against the capillary. A thin polymer fiber membrane is deposited on the collector. The electrospun nanofibers have big potential for developing the outstanding energy storage systems due to their high surface area and excellent surface-to-volume ratio which can offer numerous active sites and controllable porous structure to buffer the huge volume changes during battery cycling and infiltrate the electrolyte. [18] Electrospun nanofiber membranes possess high porosity, large specific surface area, and controllable pore size, which will block "shuttle effect" of polysulfides and enhance the wettability for electrolytes. [19] Electrospinning technique and carbonization process are facile to manufacture freestanding nanofiber fabrics with controllable porous architecture and outstanding electrical conductivity. Electrospun porous nanofibers can come into a reservoir-like matrix for the reserve of active materials. First, the hierarchical pores in electrospun porous nanofibers can improve the reactive S reaction sites and block soluble polysulfides, thereby decreasing the "shuttling effect" of polysulfides during the electrochemical cycling. Second, electrospun porous fibers have excellent physical and mechanical properties, outstanding architecture, and superior electrical conductivity, which can enhance the transfer of Li-ions and electrons, endowing extraordinary electrochemical performance of the whole battery system. [20] Figure 2 shows phase and morphological evolutions of the electrospun nanofibers. By combining the electrospinning and other treatment (thermal, chem...

show abstract

“…• C, it is possible remove the surface sulfur and also the elemental sulfur predominate as S 6 and S 2 which have more extensive chemical bonds with PPy. Furthermore, it was noted that the capacity value after 100 cycles is higher than that for the first cycle.…”

Section: Sulfur-polymer-metal Oxide Composite Cathode Materialsmentioning

confidence: 99%

“…In this context, the use of sodium iron cyanide (Na 2 Fe[Fe(CN) 6 6 ]@PEDOT composite, a capacity retention of 770 mA h g −1 at 1 C after 100 cycles was achieved. The layer of positively charged PEDOT chains interact with the negatively charged sulfur species.…”

Section: Other Composite Cathode Materialsmentioning

confidence: 99%

Review—Non-Carbonaceous Materials as Cathodes for Lithium-Sulfur Batteries

Arias

Tesio

Flexer

2018

J. Electrochem. Soc.

View full text Add to dashboard Cite

Lithium-sulfur batteries are presented as a promising alternative for the operation of those devices, including electric vehicles, that require higher specific capacity than current lithium-ion technology. Unfortunately, lithium-sulfur batteries suffer from several limitations that still produce a relatively fast capacity fading and poor utilization of active materials. In order to alleviate the disadvantages that arise at the cathode, several researchers have searched for new electrode materials. Because of the long standing tradition in the use of carbons in energy storage systems, carbonaceous cathodes have been the most popular choice. Recently, however, there has been a trend for the study of non-carbonaceous materials as cathodes in lithium-sulfur systems. Materials such as polymers, metal oxides, metal carbides, amongst many others were reported, showing excellent properties which make them compete side by side with state of the art carbonaceous cathodes. These materials have generally improved the conductivity of the conventional sulfur electrode, and have provided a 3D soft adsorbent porous structure, which efficiently traps polysulfides. These characteristics are reflected in an improved electrochemical performance, reaching, in some cases, capacity retention values close to 1000 mA h g −1 after 100 cycles at high discharge rate. Here, we propose a review of these non-carbonaceous cathodes. The specific energy of current lithium-ion secondary batteries is very close to reaching its theoretical thermodynamic limit.1 This specific energy value is limited for some technological applications, such as long autonomy range electric vehicles.2 Although no other rechargeable battery technology has shown the fantastic cyclability and stability of lithium-ion batteries, the search for new rechargeable battery technologies is a very active field of research.Lithium-sulfur (Li-S) batteries are one of several alternative systems that have been proposed for higher specific energy density rechargeable batteries. A lithium-sulfur battery consists of a lithium anode, an organic electrolyte and a sulfur composite cathode.2-5 During the discharge process, at the anode, metallic lithium is oxidized to lithium cations (Li + ), while at the cathode, and in the presence of lithium ions, elemental sulfur is reduced to lithium sulfide (Li 2 S). These batteries are presented as a promising alternative energy storage system, since they are relatively light and they have the advantage of a high theoretical energy density of 2600 Wh kg −1 , which is almost 6 times higher than that of commercial lithium-ion batteries (387 Wh kg −1 for LiCoO 2 -graphite battery). 6 In addition, sulfur has a very low cost and is largely abundant in nature. [7][8][9] The foundational stone on lithium-sulfur cells was led in 1962 by Herbert and Ulam, who proposed the use of elemental sulfur as cathode material. 10Despite their numerous theoretical advantages, lithium sulfur cells are still not commercially available due to a series of limitations. 11Sev...

show abstract

Recent progress in Li–S and Li–Se batteries

Cited by 92 publications

References 161 publications

Te0.045S0.955PAN composite with high average discharge voltage for Li–S battery

Te0.045S0.955PAN composite with high average discharge voltage for Li–S battery

A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

Review—Non-Carbonaceous Materials as Cathodes for Lithium-Sulfur Batteries

Contact Info

Product

Resources

About