A method for preparing aluminum-doped nickel oxide electrochromic film by pyrolysis of hydrotalcite precursor
A technology of electrochromism and hydrotalcite, which is applied in the field of pyrolysis of hydrotalcite precursors to prepare aluminum-doped nickel oxide electrochromic films, can solve the problems of slow electrochromic speed and poor cycle stability, and achieve fast transition speed and good The effect of cycle stability
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Embodiment 1
[0022] 1. Prepare hydrotalcite by co-precipitation method, the specific method is to weigh 11.632g Ni(NO 3 ) 2 ·6H 2 O and 5gAl(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 4.68g NaOH and 3.77g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100mL alkali solution, drop the two mixed solutions into a three-necked flask filled with 120ml deionized water at the same time and with mechanical stirring, in a water bath at 40°C, adjust the reaction to a final pH of 10, and crystallize for 24 hours. Centrifugal washing, drying, and grinding into powder, the chemical formula of the obtained nickel aluminum hydrotalcite is: Ni 0.753 al 0.247 (OH) 2 (CO 3 ) 0.124 ·H 2 O;
[0023] 2. Weigh 10 mg of the nickel-aluminum hydrotalcite powder prepared in step 1 and disperse it in 10 ml of ethanol, and ultrasonicate for 20 minutes to obtain a colloidal solution; select a 2 cm*3 cm ITO sheet, and soak it in dilute hydrochloric a...
Embodiment 2
[0029] 1. Prepare hydrotalcite by co-precipitation method, the specific method is to weigh 11.632g Ni(NO 3 ) 2 ·6H 2 O and 3.75gAl(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 4.4g NaOH and 3.551g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100mL alkali solution, drop the two mixed solutions into a three-necked flask filled with 120ml deionized water at the same time and with mechanical stirring, in a 40°C water bath, adjust the reaction to a final pH of 10, centrifuge, wash, and dry , ground into powder, the chemical formula of the obtained nickel aluminum hydrotalcite is: Ni 0.831 al 0.169 (OH) 2 (CO 3 ) 0.085 0.8H 2 O;
[0030] 2. With embodiment 1;
[0031] 3. With embodiment 1;
[0032] 4. With embodiment 1;
[0033] 5. Same as embodiment 1.
[0034] To characterize the product: by figure 1 The characteristic peaks such as 003, 006, and 012 in b can be known as the XRD pattern of nickel aluminum ...
Embodiment 3
[0036] 1. Prepare hydrotalcite by co-precipitation method, the specific method is to weigh 11.632g Ni(NO 3 ) 2 ·6H 2 O and 1.67gAl(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 3.91g NaOH and 3.16g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100mL alkali solution, drop the two mixed solutions into a three-necked flask filled with 120ml deionized water at the same time and with mechanical stirring, in a 40°C water bath, adjust the reaction to a final pH of 10, centrifuge, wash, and dry , ground into powder, the chemical formula of the obtained nickel aluminum hydrotalcite is: Ni 0.895 al 0.105 (OH) 2 (CO 3 ) 0.052 2H 2 O;
[0037] 2. With embodiment 1;
[0038] 3. With embodiment 1;
[0039] 4. With embodiment 1;
[0040] 5. Same as embodiment 1.
[0041] To characterize the product: by figure 1 The characteristic peaks such as 003, 006, and 012 in c can be known as the XRD pattern of nickel aluminum ca...
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