Method for preparing metal element doped cobalt oxide (Co3O4) nanofiber electrode by electrostatic spinning method

[0017] Molybdenum (Mo) doped cobalt oxide (Co 3 o 4 ) Preparation of nanofibers.

[0018] First, prepare organic polymer solution A: 0.6g of polyvinylpyrrolidone (PVP, molecular weight 130W) dissolved in 10ml of ethanol, followed by metal precursor solution B: 0.3g of cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) Dissolve in 3 g of water. Then prepare doped metal precursor solution C: 0.005g ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) dissolved in 1 g of water. A, B, and C all need to be magnetically stirred for 1 hour, and then A, B, and C are mixed and stirred evenly to obtain spinning solution D.

[0019] Set the electrospinning parameters for spinning: positive voltage: 18Kv; negative voltage: 1.2Kv; flow rate: 0.15mm / min; receiving distance: 20cm; rotational speed: 200r / min.

[0020] The obtained fiber membrane was heat-treated in a muffle furnace at 500 °C for 2 h to obtain molybdenum (Mo)-doped cobalt oxide (Co 3 o 4 )Nanofibers.

[0022] Molybdenum (Mo) doped cobalt oxide (Co 3 o 4 ) Preparation of nanofibers.

[0023] First, prepare organic polymer solution A: 0.6g of polyvinylpyrrolidone (PVP, molecular weight 130W) dissolved in 10ml of ethanol, followed by metal precursor solution B: 0.15g of cobalt chloride hexahydrate (CoCl 2 ·6H 2 O) Dissolve in 3 g of water. Re-preparation of doped metal precursor solution C: 0.005g ammonium molybdate tetrahydrate (NH 4 ) 6 Mo 7 o 24 4H 2 O) dissolved in 1 g of water. A, B, and C all need to be magnetically stirred for 1 hour, and then A, B, and C are mixed and stirred evenly to obtain spinning solution D.

[0024] Set the electrospinning parameters for spinning: positive voltage: 18.2Kv; negative voltage: 1.4Kv; flow rate: 0.15mm / min; receiving distance: 22cm; rotational speed: 200r / min.

[0025] The obtained fiber membrane was heat-treated in a muffle furnace at 500 °C for 2 h to obtain molybdenum (Mo)-doped cobalt oxide (Co 3 o 4 )Nanofibers.

[0027] Molybdenum (Mo) doped cobalt oxide (Co 3 o 4 ) Preparation of nanofibers.

[0028] First, the preparation of organic polymer solution A: 0.6g of polyvinylpyrrolidone (PVP, molecular weight 130W) dissolved in 10ml of ethanol, followed by metal precursor solution B: 0.3g of cobalt acetylacetonate (Co(C 5 h 7 o 2 ) 3 ) was dissolved in 2 g of water. Then prepare doped metal precursor solution C: 0.005g ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) dissolved in 1 g of water. A, B, and C all need to be magnetically stirred for 1 hour, and then A, B, and C are mixed and stirred evenly to obtain spinning solution D.

[0029] Set the electrospinning parameters for spinning: positive voltage: 18Kv; negative voltage: 1.2Kv; flow rate: 0.15mm / min; receiving distance: 20cm; rotational speed: 200r / min.

[0030] The obtained fiber membrane was heat-treated in a muffle furnace at 500 °C for 2 h to obtain molybdenum (Mo)-doped cobalt oxide (Co 3 o 4 )Nanof