A porous polycrystalline NiCo₂P_x as a highly efficient host for sulfur cathodes in Li–S batteries

Abstract

Metal phosphides have exhibited great potential in constructing high efficient sulfur cathode benefiting from their high conductivity, catalytic property, etc, which have been utilized to improve sulfur utilization, inhibit the...

Manipulating Electrocatalytic Polysulfide Redox Kinetics by 1D Core–Shell Like Composite for Lithium–Sulfur Batteries

“…[9][10][11][12][13] These critical problems are closely linked to the lithium polysulfide intermediates that are highly soluble in electrolyte and irreversibly being consumed with lithium metal, leading to the notorious shuttle effect. [14][15][16][17][18] Recently, various inorganic metal compounds have been used to regular polysulfide shuttle, including metal atoms, [19,20] metal oxides, [21][22][23][24][25][26] sulfides, [25,27,28] nitrides, [29][30][31] carbides, [32] phosphides, [33,34] and borides. [6,7,35,36] These materials possess strong chemical interactions with polysulfides, which can effectively confine polysulfides at the cathode and suppress the shuttle effect.…”

“…Recently, various inorganic metal compounds have been used to regular polysulfide shuttle, including metal atoms, [ 19,20 ] metal oxides, [ 21–26 ] sulfides, [ 25,27,28 ] nitrides, [ 29–31 ] carbides, [ 32 ] phosphides, [ 33,34 ] and borides. [ 6,7,35,36 ] These materials possess strong chemical interactions with polysulfides, which can effectively confine polysulfides at the cathode and suppress the shuttle effect.…”

Tessellated N-doped carbon/CoSe2 as trap-catalyst sulfur hosts for room-temperature sodium–sulfur batteries

“…4c, the linear relationship between the inverse square root of the frequency ( ω −1/2 ) in the diffusion range and the impedance ( Z ′) is obviously obtained. 44 In addition, the calculation results show that the Na + diffusion coefficient of NCCS@S is 1.714 × 10 −12 cm 2 s −1 , larger than that of NC@S (1.714 × 10 −12 cm 2 s −1 ). Furthermore, Fig.…”

A bifunctional VS2–Ti3C2 heterostructure electrocatalyst for boosting polysulfide redox in high performance lithium–sulfur batteries

“…These issues result in slow redox kinetics, limited sulfur utilization, irreversible Li anode corrosion and low coulombic efficiency 3,4 and poor cycle stability. [5][6][7] Therefore, developing various catalysts, including metal oxides, 8 suldes, 9 carbides, 10 nitrides and phosphides, 11,12 to anchor LiPSs and accelerate the redox reaction kinetics is the key to realize desirable application of LSBs.…”