A kind of flexible, solid supercapacitor and its preparation method and application
A supercapacitor and solid-state technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problems of poor mechanical properties and insufficient flexibility, and achieve good charge-discharge cycle stability and high rate The effect of simple performance and preparation method
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Embodiment 1
[0061] Example 1: Preparation of the first network lignin hydrogel (N-LP 0.6)
[0062] The lignin was selected as enzymatic lignin derived from corn stalks (Shandong Longli Biotechnology Co., Ltd.), and the cross-linking agent was selected as polyethylene glycol diglycidyl ether (PEGDGE, Mn=500) (purchased from Sigma). Weigh 5g of enzymatic lignin and fully dissolve it in 20mL of 1mol / L NaOH solution, then add 3g of PEGDGE to the above solution according to the mass ratio of lignin to PEGDGE of 1:0.6 and fully dissolve it, then put it in an oven at 50°C The reaction was cured for 2 hours to obtain the first network lignin hydrogel (N-LP 0.6).
Embodiment 2
[0063] Example 2: Preparation of the first network lignin hydrogel (N-LP 0.8)
[0064] The lignin was selected as enzymatic lignin derived from corn stalks (Shandong Longli Biotechnology Co., Ltd.), and the cross-linking agent was selected as polyethylene glycol diglycidyl ether (PEGDGE, Mn=500) (purchased from Sigma). Weigh 5g of enzymatic lignin and fully dissolve it in 20mL of 1mol / L NaOH solution, then add 4g of PEGDGE to the above solution according to the mass ratio of lignin to PEGDGE of 1:0.8 and fully dissolve it, then put it in an oven at 50°C The reaction was cured for 2 hours to obtain the first network lignin hydrogel (N-LP 0.8).
Embodiment 3
[0065] Example 3: Preparation of the first network lignin hydrogel (N-LP 1.0)
[0066] The lignin was selected as enzymatic lignin derived from corn stalks (Shandong Longli Biotechnology Co., Ltd.), and the cross-linking agent was selected as polyethylene glycol diglycidyl ether (PEGDGE, Mn=500) (purchased from Sigma). Weigh 5g of enzymatic lignin and fully dissolve it in 20mL of 1mol / L NaOH solution, then add 5g of PEGDGE to the above solution according to the mass ratio of lignin to PEGDGE of 1:1.0 and fully dissolve it, then put it in an oven at 50°C The reaction was cured for 2 hours to obtain the first network lignin hydrogel (N-LP 1.0).
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