N-doped-carbon coated Ni2P-Ni sheets anchored on graphene with superior energy storage behavior

Two Birds with One Stone: Metal–Organic Framework Derived Micro‐/Nanostructured Ni2P/Ni Hybrids Embedded in Porous Carbon for Electrocatalysis and Energy Storage

“…When further discharged to 0.34 V, it can be observed that the peaks of Ni 2 P gradually disappear. Meanwhile, the peak located at 26.8° appears, corresponding to the lattice facet of (101) of Li 3 P (PDF#04‐0525) . More precisely, 1.08 V is a lithiation intermediate transition state and the full lithiation process happened after 0.34 V. In the following charging process, the diffraction peaks of Li 3 P can still be detected at 0.78 V, but almost disappear when charged back to 1.86 and 3.0 V. This result reveals that the conversion reactions in charging process mainly occurred between 0.78 and 1.86 V. The peaks of Li 3 P are relatively inconspicuous in the XRD pattern during the lithiation/delithiation process, which is partly due to the poor crystallinity of the generated Li 3 P phase, and also partly caused by the disturbance of adhesion agent, conductive agents, and current collector.…”

Engineered Changes in Structure and Component from Solid NiS2/Reduced Graphene Oxide to Hollow Ni‐P/Reduced Graphene Oxide and the Enhanced Performance for Lithium‐Ion Batteries

“…As the cycles proceeded, the peak of ≈1.24 V shifted to ≈0.62 V and the peak of ≈0.23 V disappeared, revealing the SEI film formed in the first cycle. In the charge process, an oxidation peak appeared at 0.9–1.3 V as the reaction of recovering Ni 2 P . Significantly, the second, third, fourth, and fifth curves were nearly overlapped, indicating a good stability and reversibility of the electrode materials.…”

3D hierarchical rose-like Ni2P@rGO assembled from interconnected nanoflakes as anode for lithium ion batteries

“…47 The chemical bond between Ni 2 P and rGO was further explored by FTIR and displayed in the , corresponding to C-O stretching in C-O-C group, C]O carboxyl stretching, C-OH stretching, respectively. While in Ni 2 P@rGO, the strength of these three peaks is decreased, which is most probably caused by chemical interaction between graphene and Ni 2 P. 24 Beyond that, other characteristic peaks in Ni 2 P@rGO are caused by the presence of Ni 2 P. The chemical composition of Ni 2 P@rGO is further proven by XPS and discussed in Fig. 3b-e.…”

“…20 Among various strategies, making Ni 2 P-based hybrids by introducing carbon matrix have been proved to be highly effective way. The adopted carbon matrix such as porous carbon, 21,22 graphene, 23,24 graphene oxide, 25,26 reduced graphene oxide, 27,28 etc. can oen serve as the remarkable buffer reservoir of electrode material expansion and electrolyte so that signicantly enhance the transport efficiency of electron and lithium ion.…”