From fibrous elastin proteins to one-dimensional transition metal phosphides and their applications

Abstract

One-dimensional (1D) carbon-supported nanostructured CoP and FeP 4 were prepared using fibrous elastin proteins that served as starting materials through an oil-phase method and the as-synthesized products were investigated for their lithium and sodium storage properties. The 1D CoP and FeP 4 are composed of nanosized particles decorated on carbon supports. The 1D CoP and FeP 4 nanostructures are $2 mm in length and 20-50 nm in diameter. The particles on the exterior of the 1D structure are 5-10 nm in diameter. To investigate the as-synthesized 1D TMPs in energy storage applications, the as-synthesized 1D CoP nanostructures are applied as an anode material in half-cells for LIBs and SIBs. For lithium storage performances, the anode delivers a specific capacity as high as $740 mAh g À1 at 0.2C and shows good rate performance and capacity retention as well as high rate capability (e.g. a stable specific capacity of $365 mAh g À1 for 120 cycles at 3.0C). In SIBs, at 0.2 and 5.0C, the specific capacities of 491.60 and 314.84 mAh g À1 are delivered, respectively. When tested at 1.0, 2.0, and 5.0C, the specific capacities are stable at $400, 360, and 300 mAh g À1 over 250, 250, and 1000 cycles, respectively.

Hierarchical Core‐Shell N‐Doped Carbon@FeP4‐CoP Arrays as Robust Bifunctional Electrocatalysts for Overall Water Splitting at High Current Density

“…[ 2a ] As shown in Figure 3c, a clear set of 0.247 nm interplanar distances belong to the (111) crystal plane of monoclinic CoP, [ 1b,27 ] and the other two types of interplanar distances (0.184 and 0.161 nm) respectively belong to the (152) and (−261) crystal planes of orthorhombic FeP 4 . [ 28 ] In addition, the elemental mappings about NC@FeP 4 ‐CoP explain that Co, Fe, P, C, and N elements are evenly dispersed in the entire structure of NC@FeP 4 ‐CoP (Figure 3d).…”

1D Nanomaterials: Design, Synthesis, and Applications in Sodium–Ion Batteries

“…There are only a few reports about 1D TMP used in SIBs. Yan and co‐workers fabricated 1D nanostructured CoP and FeP 4 supported by carbon using amphiphilic self‐assembling fibrous elastin proteins as template . The CoP and FeP 4 nanoparticles (5–10 nm in diameter) are decorated in the fibers with diameters around 50 nm and lengths about 2 µm.…”

High performance carbon-coated hollow Ni12P5 nanocrystals decorated on GNS as advanced anodes for lithium and sodium storage

“…Conversion type TMPs are rising anode materials for rechargeable secondary batteries in recent years. [24][25][26][27][28] As anode materials for lithium/sodium ion batteries, based on the reversible reaction between phosphorus and Li/Na (Li3P/Na3P), TMPs display high specific capacity (up to ~1800 mAh g -1 ), 29,30 low operation potential, metallic feature as well as good thermal stability. However, the large volume expansion and poor electronic conductivity of TMPs seriously limit the kinetics property and cycling stability.…”