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- W4318909501 abstract "Compounding CoP nanoparticles with graphene can serve as promising anode materials for high-performance lithium-ion batteries. However, the weak binding and dispersion between CoP and graphene usually lead to poor structural stability limiting the lithium storage performance. Herein, an amino-functionalization-assisted one pot self-assembly method is employed to synthesize CoP/nitrogen, phosphorus co-doped graphene composites (CoP/NPG) with a highly stable 3D porous structure. The negatively charged phytic acid can act as a bridging connection between the positively charged amino-functionalized graphene and Co2+ by strong electrostatic attraction, ensuring the synthesized CoP nanoparticles are uniformly distributed on NPG sheets with high conductivity and plenty of active centers. Meanwhile, establishing strong C–P and Co–O–C surface chemical bonds between CoP and NPG improves the structural strength and promotes fast electron/ion transport, which effectively alleviates the volume expansion of CoP. Benefiting from these advantages, the CoP/NPG electrode displays high lithium storage capacity (917.9 mAh g − 1 at 0.5 A g − 1 after 600 cycles), ultra-long cyclic stability (434.8 and 350.5 mAh g − 1 at 3.0 and 5.0 A g − 1 after 3000 cycles) and fast pseudocapacitive charge storage (contribution even up to 97% at 2.0 mV s − 1). This strategy offers promising prospects for the preparation of highly stable anode materials." @default.
- W4318909501 created "2023-02-03" @default.
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- W4318909501 date "2023-02-01" @default.
- W4318909501 modified "2023-09-23" @default.
- W4318909501 title "Amino-functionalization-assisted construction of CoP/N, P co-doped graphene to enhance stable lithium storage via electrostatic interaction and strong bonds" @default.
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- W4318909501 doi "https://doi.org/10.1016/j.electacta.2023.141910" @default.
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