Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

Abstract

Due to its high electrochemical activities and low intercalation potential for Li/Li+, transition metal phosphides (TMPs) are booming as commerciogenic anode for lithium‐ion batteries (LIBs). Herein, the reasonable devise of nitrogen‐doped carbon‐coated CoP (CoP@NC) nanocomposites, which is derived from metal–organic frameworks (MOF‐Co) precursors, combining with graphene modification, is presented. The ultrafine CoP@NC nanoparticles are strongly incorporated with graphene networks (CoP@NC/GO). When assessed as anode electrode for LIBs, novel dual carbon encapsulation architectures of CoP@NC/GO hybrid composites exhibit superior cyclability (345 mAh g−1 at 1500 mA g−1 after 1000 cycles) and prominent rate ability (404 mAh g−1 at 3000 mA g−1). It is believed that this strategy can be helpful for boosting the electrochemical performance of the TMPs family as advance anode materials for energy storage systems.

In situ construction of flower-like CoP-in-carbon anode materials for high-rate and long-term lithium ion batteries

“…Indeed, the reported rate capacities at 1 A g À1 vary from 282 to 722 mA h g À1 , which are obviously smaller than that of our CoP/C nanoowers, therefore con-rming their superior rate performance as the anode material in LIBs. [34][35][36][37][38][39][40][41][42][43][44] As expected, the CoP/C nanoowers manifest an excellent long-term cycling performance even at 4 A g À1 . As shown in Fig.…”

“…Indeed, the reported rate capacities at 1 A g −1 vary from 282 to 722 mA h g −1 , which are obviously smaller than that of our CoP/C nanoflowers, therefore confirming their superior rate performance as the anode material in LIBs. 34–44…”

Yolk‐Shell‐Structured Nanospheres with Goat Pupil‐Like S‐Doped SnSe Yolk and Hollow Carbon‐Shell Configuration as Anode Material for Sodium‐Ion Storage

“…[ 26 ] The other two peaks at 163.1 and 164.4 eV assigned to S 2p 3/2 and S 2p 1/2 in the CS bonds, respectively, indicate the substitution of carbon by S. [ 20,27 ] The C 1s spectrum in Figure 2e displays peaks corresponding to CC, CC, CS, CO, and OCO bonds originating from the carbon shell at 284.5, 285.1, 285.5, 286.8, and 288.9 eV, respectively. [ 20,28 ] The existence and characteristics of the carbon component in SnSeS@C were additionally confirmed by Raman spectroscopy, as shown in Figure 2f. The Raman spectrum of SnSeS@C exhibits two clear peaks at 1342 and 1592 cm −1 , which correspond to the disordered (D‐band) and graphitic features (G‐band) in carbon, respectively.…”

Conversion Reaction Mechanism for Yolk‐Shell‐Structured Iron Telluride‐C Nanospheres and Exploration of Their Electrochemical Performance as an Anode Material for Potassium‐Ion Batteries

“…[20][21][22] The C 1s spectrum, originating from the carbon shell, can be fitted to line shapes with binding energies at 284.6, 285.7, and 288.4 eV, assigned to CC, CO, and OCO, respectively, as shown in Figure 2d. [23] Raman spectroscopy was used to further analyze the characteristics of carbon in FeTe 2 -C, as shown in Figure 2e. Two obvious peaks are observed at 1336 and 1593 cm −1 , corresponding to the D and G bands.…”