A reusable self-healing flexible and compliant electrode and its preparation method
A self-healing and electrode technology, applied in the field of electrode materials, can solve the problems of flexible electrode materials being easily damaged and unable to be reused for a long time, and achieve the effects of good cycle stability, cost saving and high tensile stability.
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Embodiment 1
[0052] Preparation of Carboxyl-Grafted Modified Silica Gel
[0053] Firstly, the method in the prior art is used to prepare carboxyl-grafted modified silica gel. 100 parts of tetravinyltetramethylcyclotetrasiloxane (V4), 0.048 parts of catalyst tetramethylammonium hydroxide (25% aqueous solution) TMAOH and 0.41 parts of end-capping agent decamethyltetrasiloxane were added to In the three-necked flask, after lapping the reaction device (stirring system+vacuumizing system), after vacuumizing for 2 hours, feed N 2 Finally, the temperature was raised to 110°C for 5 hours until the system obviously climbed the rod. After the temperature was raised to 170°C, the unreacted small molecules were removed by vacuum to prepare vinyl silica gel with a vinyl content of 100% and a number average molecular weight of 100,000.
[0054] Weigh 100 parts by weight of vinyl silica gel with a vinyl content of 100% and put it into a conical flask, and add 1000 parts of tetrahydrofuran as a solvent; ...
Embodiment 2
[0067] The experimental procedure of the reusable and self-healing flexible and compliant electrode is the same as that of Example 1, but the difference from Example 1 is that no conductive carbon black is added, and 40 parts of silver nanowires are added. The tensile conductivity test results are shown in Table 1, the self-repairing conductivity test results are shown in Table 2, and the reuse performance test is shown in Table 3.
Embodiment 3
[0069] The experimental steps of the reusable and self-healing flexible and compliant electrode are the same as in Example 1. The difference from Example 1 is that the carboxyl-modified silica gel with a carboxyl content of 50% is prepared, and the number average molecular weight is 150,000; the amino graft-modified silica gel with an amino content of 10% is synthesized, and the number average molecular weight is 50,000. The tensile conductivity test results are shown in Table 1, the self-repairing conductivity test results are shown in Table 2, and the reuse performance test is shown in Table 3.
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