Rechargeable lithiumsulfur battery (extended abstract)

Peled, E.; Gorenshtein, A.; Segal, M.; Sternberg, Y.

doi:10.1016/0378-7753(89)80133-8

Cited by 163 publications

(116 citation statements)

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“…At the same time, it is recognized that traditional lithium-ion batteries are approaching their theoretical energy density limits [1][2][3][4] . Lithium-sulfur batteries are one of the most promising candidates to satisfy emerging market demands [5][6][7] , as they possess a theoretical capacity and energy density of 1,675 mA h g À 1 and 2,500 kW kg À 1 , respectively, superior to current lithium-ion batteries 8,9 . In addition, they present an inherently low competitive cost due to the high natural abundance of sulfur.…”

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confidence: 99%

A highly efficient polysulfide mediator for lithium–sulfur batteries

et al. 2015

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The lithium-sulfur battery is receiving intense interest because its theoretical energy density exceeds that of lithium-ion batteries at much lower cost, but practical applications are still hindered by capacity decay caused by the polysulfide shuttle. Here we report a strategy to entrap polysulfides in the cathode that relies on a chemical process, whereby a hostmanganese dioxide nanosheets serve as the prototype-reacts with initially formed lithium polysulfides to form surface-bound intermediates. These function as a redox shuttle to catenate and bind 'higher' polysulfides, and convert them on reduction to insoluble lithium sulfide via disproportionation. The sulfur/manganese dioxide nanosheet composite with 75 wt% sulfur exhibits a reversible capacity of 1,300 mA h g À 1 at moderate rates and a fade rate over 2,000 cycles of 0.036%/cycle, among the best reported to date. We furthermore show that this mechanism extends to graphene oxide and suggest it can be employed more widely.

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A highly efficient polysulfide mediator for lithium–sulfur batteries

et al. 2015

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“…Cobalt polysulphides have been investigated as cathode materials to reduce the solubility of polysulphide ions in the electrolyte 11 . Efforts devoted to electrolytes include rational selection of solvents 12 and introduction of additives such as LiNO 3 (ref. 13), which diminishes the effect of the polysulphide shuttle mechanism as a result of complex reactions on the Li metal anode.…”

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Stabilizing lithium–sulphur cathodes using polysulphide reservoirs

et al. 2011

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The possibility of achieving high-energy, long-life storage batteries has tremendous scientific and technological significance. An example is the Li-s cell, which can offer a 3-5-fold increase in energy density compared with conventional Li-ion cells, at lower cost. Despite significant advances, there are challenges to its wide-scale implementation, which include dissolution of intermediate polysulphide reaction species into the electrolyte. Here we report a new concept to mitigate the problem, which relies on the design principles of drug delivery. our strategy employs absorption of the intermediate polysulphides by a porous silica embedded within the carbon-sulphur composite that not only absorbs the polysulphides by means of weak binding, but also permits reversible desorption and release. It functions as an internal polysulphide reservoir during the reversible electrochemical process to give rise to long-term stabilization and improved coulombic efficiency. The reservoir mechanism is general and applicable to Li/s cathodes of any nature.

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“…The use of an ordered mesoporous carbon composite provides both an electronic percolation path and an adequately controlled porosity that confines a significant portion of the electrochemically generated polysuphide species in the cathode. Other approaches focus on the electrolyte, including the selection of appropriate solvents 32,33 , dual electrolytes 34 , electrolyte additives 13,[35][36][37][38][39] or solid-state electrolytes 40 . Scrosati and co-workers 17,41,42 used a gel-type polymer electrolyte membrane as a physical barrier to block the dissolved sulphide species within the cathode compartment and lessen the deleterious side reactions at the anode.…”

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Manipulating surface reactions in lithium–sulphur batteries using hybrid anode structures

et al. 2014

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Lithium-sulphur batteries have high theoretical energy density and potentially low cost, but significant challenges such as severe capacity degradation prevent its widespread adoption. Here we report a new design of lithium-sulphur battery using electrically connected graphite and lithium metal as a hybrid anode to control undesirable surface reactions on lithium. Lithiated graphite placed in front of the lithium metal functions as an artificial, self-regulated solid electrolyte interface layer to actively control the electrochemical reactions and minimize the deleterious side reactions, leading to significant performance improvements. Lithiumsulphur cells incorporating this hybrid anodes deliver capacities of 4800 mAh g À 1 for 400 cycles at a high rate of 1,737 mA g À 1 , with only 11% capacity fade and a Coulombic efficiency 499%. This simple hybrid concept may also provide scientific strategies for protecting metal anodes in other energy-storage devices.

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Rechargeable lithiumsulfur battery (extended abstract)

Cited by 163 publications

References 1 publication

A highly efficient polysulfide mediator for lithium–sulfur batteries

A highly efficient polysulfide mediator for lithium–sulfur batteries

Stabilizing lithium–sulphur cathodes using polysulphide reservoirs

Manipulating surface reactions in lithium–sulphur batteries using hybrid anode structures

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