A kind of ferrous ion/air battery and preparation method thereof
A ferrous ion and air battery technology, applied in battery electrodes, fuel cell half-cells and primary battery-type half-cells, circuits, etc., can solve the difficulty of battery maintenance and catalyst replacement, unfavorable battery long-term operation, electrode catalyst cost advanced questions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] (1) Manganese dioxide particles (MnO) supported by graphene (Gr) were prepared 2 / Gr):
[0045] First prepare graphene oxide (Gr): add 2 g graphite powder (particle size ≤30 μm, content ≥95%, carbon content 99.85%) and 12 g KMnO 4 , then add 240 mL concentrated H 2 SO 4 (content is 95.0%~98.0%) and 27 mL concentrated H 3 PO 4 (content ≥ 85.0%), mechanically stirred for 14 h in a water bath at 50 °C. After the reaction was completed, cool to room temperature, and then quickly pour in 8 mL of 30% HO 2 o 2 800 mL of ice water, at which point the suspension turned bright yellow. After cooling to room temperature, wash with 5% HCl solution to free of SO 4 2− , and then washed with deionized water to pH = 7, and finally dried at 40 °C for 48 h to obtain graphene oxide (Gr).
[0046] Finally, graphene (Gr)-supported manganese dioxide particles (MnO 2 / Gr): Mix 400 mg graphene oxide (Gr) with 45 mL 50 mmol L -1 MnSO 4 The solutions were mixed, sonicated for 5 mi...
Embodiment 2
[0053] Step (1) is the same as in Example 1.
[0054] (2) Silver nitrate (AgNO 3 ), cobalt nitrate (Co(NO 3 ) 2 ×6H 2 O), ethylene glycol and MnO 2 / Gr particles are mixed according to the ratio of 100 mg: 43 mg: 10 ml: (420 mg), the mixture is ultrasonically dispersed at room temperature for 30 min, and then 20 ml is dissolved in 40% (mass percentage) of ethylene glycol under constant stirring The sodium borohydride solution was added dropwise, stirred intermittently for 1.5h, filtered, and the obtained solid was washed with water until neutral, and the 40 o C under vacuum drying for 24h, to obtain silver-cobalt-coated manganese dioxide / graphene nanoparticles (MnO 2 / Gr@AgCo);
[0055] (3) Coat a layer of 45% polytetrafluoroethylene emulsion on one side of the carbon paper with a thickness of 2 mm. After drying at room temperature, dry it at 350 o Sinter at a temperature of C for 1.5 hours, take it out, and cool it to room temperature to obtain a carbon paper with hydr...
Embodiment 3
[0060] Step (1) is the same as in Example 1.
[0061] (2) Silver nitrate (AgNO 3 ), cobalt nitrate (Co(NO 3 ) 2 ×6H 2 O), ethylene glycol and MnO 2 / Gr particles were mixed according to the ratio of 100 mg: 43 mg: 10 ml: 630 mg, the mixture was ultrasonically dispersed at room temperature for 30 min, and then 30 ml of 40% (mass percent) hydroboration solution dissolved in ethylene glycol was hydroborated under constant stirring. Sodium solution was added dropwise, stirred intermittently for 1.5h, filtered, and the obtained solid was washed with water to neutrality, and 40 o C under vacuum drying for 24h, to obtain silver-cobalt-coated manganese dioxide / graphene nanoparticles (MnO 2 / Gr@AgCo);
[0062] (3) Coat a layer of 60% polytetrafluoroethylene emulsion on one side of the carbon paper with a thickness of 2 mm. After drying at room temperature, dry it at 350 oSinter at a temperature of C for 1.5 hours, take it out, and cool it to room temperature to obtain a carbon p...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More