In contrast, Li+and Na+—both alkali metal ions—have similar hydration energies and hydrated radius caused by the same ionic charges and similar bare ion sizes, making it more difficult to achieve Li+ion selectivity over Na+ion compared to Mg2+ion. In this regard, understanding the origins ...
Similar to phosphate materials (LiFePO4), Li2FeSiO4 (LFS) has low electrical and ionic conductivity as an intrinsic flaw, which greatly hinders its electrochemical performance [39]. To overcome this problem, various strategies have been adopted by researchers/scientists such as coating material by cond...
(M = first-row transition metals) increases with the atomic number of M, as a result of the increasingly covalent character of the M-O bond in these materials.27,32 The same general trend was later also confirmed for polyoxianionic cathode materials.33,34 In addition, LDA predicted a ...
Sulfur/graphene oxide core–shell particles Ionic solutions 50% 800 mA h g−1 at 1 A g−1 after 1000 cycles (based on sulfur) Ionic solutions, 1.9–2.6 V [55] Graphene-wrapped S NPs Wet chemical reduction 80% 698 mA h g−1/210 mA g−1/over 15 cycles 1 M LiTFSI/DOL-DME...
(M=first-row transition metals) increases with the atomic number of M, as a result of the increasingly covalent character of the M-O bond in these materials.27,32The same general trend was later also confirmed for polyoxianionic cathode materials.33,34In addition, LDA predicted a decrease ...
– high ionic conductivity and selectivity towards Li ions, in order to ensure the battery operation in high power regime; – high thermal stability in order to allow the operation of the battery at high temperature and/or in spite of thermal oscillations occurring during the battery operatio...
Nanostructured materials based on carbon, metal/semiconductor, metal oxides and metal phosphides/nitrides/sulfides show a variety of admirable properties for LIBs applications such as high surface area, low diffusion distance, high electrical and ionic conductivity. Therefore, nanosized active materials ...
Sections Figures References Abstract Introduction Equilibrium voltage Voltage profiles Ionic mobility Thermal and electrochemical stability Challenges and perspectives References Acknowledgements Author information Ethics declarations Rights and permissions About this article This article is cited by Advertisement...
(where X = F, Cl, Br, I and M represents metal or non-metal elements) are the prevailing representatives of halide SEs. Significant breakthroughs in 2018 introduced halide SEs like Li3YCl6and Li3YBr6, boasting ionic conductivities ranging from 0.51 to 1.70 mS cm−1at RT [58]. ...
In another embodiment, one or more of the first and second polymeric materials can be joined together through cross-linkages (or cross-linking interactions), such as ionic or covalent bonds. In an embodiment, the first polymeric material is PAA or a salt of derivative of PAA and the second ...