典型文献
Anion effect on Li/Na/K hybrid electrolytes for Graphite//NCA(LiNi0.8Co0.15Al0.05O2) Li-ion batteries
文献摘要:
The electrolyte is an essential component of a battery system since it is responsible for the conduction of ions between the electrodes.In the quest for cheaper alternatives to common organic electrolytes for lithium-ion batteries (LIB),we formulated hybrid electrolytes comprising a mixture of Na,K,and Li alka-line salts with ethylene carbonate (EC),ethyl methyl carbonate (EMC),and lithium hexafluorophosphate(LiPF6),giving a total salt concentration of 1.5 M;we determined their physicochemical properties and investigated their electrochemical behavior on a nickel cobalt aluminum oxide (NCA) cathode and gra-phite (Gr) anode.The electrolytes demonstrated a melting transition peak (Tm),eutectic behavior,and ionic conductivities (~13 mS cm-1) close to those of a commercial LIB electrolyte (SE,EC/EMC + 1 M LiPF6) and activation energies of ca.3 kJ mol-1.The half-cell coin cells revealed high coulombic efficiency(99%),specific capacity (175 mAh g-1 at C/10),and capacity retention (92% for NaCF3SO3) for the NC.A cathode and a moderate performance (coulombic efficiency of 98% for 20 cycles) on the graphite anode after the formation of the SEI layer.The hybrid electrolytes were cycled at 25 ℃ in a Gr//NCA cell yielding specific capacities of ca.225 mAh g-1 at a C/5 rate,corroborating that the anion plays a key role and high-lighting their potential for energy storage applications.
文献关键词:
中图分类号:
作者姓名:
Aiman Jrondi;Georgios Nikiforidis;Mérièm Anouti
作者机构:
Laboratoire PCM2E,Université de Tours,Faculté des sciences et technologie,Parc de Grandmont,37200 Tours,France;LE STUDIUM Institute for Advanced Studies,45000 Orléans,France
文献出处:
引用格式:
[1]Aiman Jrondi;Georgios Nikiforidis;Mérièm Anouti-.Anion effect on Li/Na/K hybrid electrolytes for Graphite//NCA(LiNi0.8Co0.15Al0.05O2) Li-ion batteries)[J].能源化学,2022(01):451-462
A类:
hexafluorophosphate,phite,NaCF3SO3
B类:
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AB值:
0.578691
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