Conductive carbon networks in surface coating of GeP rods toward high-performance lithium/sodium-ion battery anode

The Anode Materials for Lithium‐Ion and Sodium‐Ion Batteries Based on Conversion Reactions: a Review

“…Its structure is shown in Figure 12b–d and used it as SiBs anode material, and at 100 mA g −1 its sodium storage performance at 0∼3 V and 0∼1.5 V was 240 mAh g −1 and 317 mAh g −1 after 100 cycles, indicating that the main sodium storage capacity of GeP is mainly between 0 and 1.5 V (Figure 12e). [116] As shown in Figure 12f–i self‐supported arrays of cobalt metaphosphate nanosheets on carbon cloths [Co(PO 3 ) 2 NSs/CC] were synthesized by He et al. combining a phosphating procedure with a hydrothermal technique, all carbon fibers were covered by the nanosheet arrays, and the nanosheets′ surfaces had nanopores that were 2–5 nm wide.…”

“…Its structure is shown in Figure 12b-d and used it as SiBs anode material, and at 100 mA g À 1 its sodium storage performance at 0 ~3 V and 0 ~1.5 V was 240 mAh g À 1 and 317 mAh g À 1 after 100 cycles, indicating that the main sodium storage capacity of GeP is mainly between 0 and 1.5 V (Figure 12e). [116] As shown in Figure 12f-i self-supported arrays of cobalt metaphosphate nanosheets on carbon cloths [112] Copyright (2021), with permission from American Chemical Society. (d) The synthesis process, (e) SEM image of the Ni 2 P@C-N�CF.…”

“…Reproduced from Ref. [116] Copyright (2021), with permission from Elsevier. (f) Schematic illustration, (g, h) SEM, (i) TEM images, (j) Cycling performance at 500 mA g À 1 of the self-supported Co(PO 3 ) 2 NSs/CC electrode.…”

“…(b) SEM, (c, d) TEM images of GeP/CNTs/AC. (e) cycling performance of GeP/CNTs/AC at 0.1 A g À 1 .Reproduced from Ref [116]. Copyright (2021), with permission from Elsevier.…”

Fully Active Bimetallic Phosphide Zn0.5Ge0.5P: A Novel High-Performance Anode for Na-Ion Batteries Coupled with Diglyme-Based Electrolyte

“…Phosphorus (P), as one of the alloying-type materials, is considered the most promising anode because each P can react with three Na atoms to form Na 3 P, giving a theoretical specific capacity of 2592 mAh g –1 with a relatively low average potential of 0.45 V (vs Na + /Na). − However, these obstacles of P anode with poor electronic conductivity, high volume expansion (391%), and unstable capacity retention should be urgently solved, which always deteriorates its comprehensive electrochemical performance. − To overcome these limitations, Ge-based, − Si-based, − Sn-based, − Zn-based, , and Cu-based − metal phosphide anodes are extensively explored, and it has been proved to be a feasible way to improve the electrical conductivity, reduce the volume change, as well as inhibit the agglomeration of P. More interestingly, bimetallic phosphides such as Cu 4 SnP 10 , NiCoP, Cu 4 SiP 8 , and FeSi 4 P 4 have been demonstrated to significantly improve the electrochemical performance of the P anode. By introducing two metal elements, bimetallic phosphides possess many advantages, such as great phase diversity, rich Na-ion binding sites, abundant ion migration pathways, stress-relieving abilities, and existing synergistic effects.…”