In:
Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 5, No. 22 ( 2021), p. 5741-5747
Abstract:
Convenient and green methods to synthesize highly efficient and stable multi-functional electrode materials are the key and a challenge for the industrial application of new energy conversion devices. Herein, we have developed a general host–guest strategy to construct amorphous hetero-atom doped cobalt phosphates; in the first step, we fast synthesized large-scale 2D Co-based phosphate precursors with different organic amine guest molecules by a hydrothermal method, afterwards, we calcined these precursors at different annealing temperatures, leading to the decomposition of organic guest molecules, and consequently, we obtained amorphous C,N co-doped mesoporous Co-based phosphates during this decomposition process. Moreover, the optimal C4NCPO-450 shows bi-functional activity for the Oxygen Evolution Reaction (OER) and supercapacitor applications. Which has a low overpotential of 292 mV and a Tafel slope of 67.45 mV dec −1 for the OER, and when used as an electrode material for supercapacitors, it reveals a large specific capacitance of 326 F g −1 @1 A g −1 , accompanied by a stability of 2200 charge and discharge cycles. We suppose that this method can be used to prepare other hetero-atom doped mesoporous electrode materials, which should be promising candidates in the electrochemical energy storage and conversion field.
Type of Medium:
Online Resource
ISSN:
2398-4902
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2882651-6
