A three-dimensional interlayer composed of graphene and porous carbon for Long-life, High capacity Lithium-Iron Fluoride Battery

Improved Electrochemical Performance of FeF3 by Inlaying in a Nitrogen‐Doped Carbon Matrix

“…These results demonstrate that compared to bare FeF 3 , the electrodes combined FeF 3 and carbon had high electron conductivity and rapid charge transfer reaction for Li + insertion/extraction. [8,10,16,88] The lithium diffusion coefficients (D Li ) of all samples were calculated, detailed formulas and methods of calculation were exhibited in Supporting Information ( Figure S7). After 200 cycles, the Rs and Rct values for three samples have changed obviously.…”

“…The reduction of Rct indicates that the transport channel of Li + was formed during the cycling, just as in the activation process. [8,10,16,88] The lithium diffusion coefficients (D Li ) of all samples were calculated, detailed formulas and methods of calculation were exhibited in Supporting Information ( Figure S7). As shown in Table S1, the D Li of FCN was estimated to be 2.10 × 10 À 15 cm s À 1 , which was 2 and 3.8 times faster than that of FC0 (1.10 × 10 À 15 cm s À 1 ) and F00 (5.50 × 10 À 16 cm s À 1 ), respectively.…”

“…Lithium-ion batteries (LIBs) serve as excellent energy storage devices due to its high efficiency of energy conversion and long service time. [5,8] Among them, iron fluoride (FeF 3 ) has been widely studied because the high theoretical capacity of 712 mAh g À 1 (delivering three electrons) and working potential (about 3.0 V for the redox reaction). [4][5][6] In this case, the conversion reaction involving multiple-electrons have received much attention because it can deliver high specific capacity.…”

“…[7] Transition metal fluorides as conversion-type cathode materials are regarded as the most promising candidate for the next generation of cathodes. [5,8] Among them, iron fluoride (FeF 3 ) has been widely studied because the high theoretical capacity of 712 mAh g À 1 (delivering three electrons) and working potential (about 3.0 V for the redox reaction). [9] Its rich resources, good thermal stability and non-toxic properties provide favorable conditions for large-scale use.…”

Structure and electrochemical performance of BaLi2−x Na x Ti6O14 (0≤x≤2) as anode materials for lithium-ion battery

“…For commercial LIBs, carbonaceous material is often used as anode material. Unfortunately, the carbonaceous anodes cannot satisfy the urgent needs for electric vehicle (EV), hybrid electric vehicle (HEV) or plug-in hybrid electric vehicle (PHEV) due to the safety problem [1][2][3]. The main safety issue in carbonous anode for LIBs is the dendritic lithium growth on the anode surface at high rates because the conventional carbonous materials approach almost 0 V (versus Li/Li + ) at the end of Li insertion [4].…”