Application of aromatic hyperconjugation dicarboxylate and aromatic hyperconjugation dicarboxylate/graphene composite material
A technology of hyperconjugated dicarboxylate and composite materials, applied in the field of negative electrode materials, can solve problems such as worrying rate performance, achieve high rate performance, solve resource shortage, and good electrochemical performance.
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[0092] 1. The use of aromatic super-conjugated dicarboxylates as anode materials for potassium ion batteries
[0093] In order to illustrate the redox principle of aromatic super-conjugated dicarboxylates in potassium ion batteries, the present invention uses 4,4' diphthalate (R 2 BPDC) and 4,4' stilbene dicarboxylate (R 2 SBDC) as an example to illustrate its principle.
[0094] Such as Figure 1-15b Shown. Specifically, such as figure 1 As shown, 4,4'biphthalate (R 2 BPDC) and 4,4' stilbene dicarboxylate (R 2 SBDC) It can change between the oxidation state and the reduction state by gaining and losing 2mol of electrons. Because of its larger conjugated surface and strong ability to disperse charges, it has strong stability. According to the chemical valence bond Conjugation theory, the larger the conjugate surface, the easier it is to disperse the charge, which is beneficial to improve stability; however, as the conjugate surface increases, its dimensional resista...
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