Polynitroxide-grafted-graphene: a superior cathode for lithium ion batteries with enhanced charge hopping transportation

Abstract

The emergence of organic nitrogen-oxide (NO) radical polymers has brought hope in the pursuit of high performance lithium-ion batteries (LIBs).

Covalent functionalization of carbon materials with redox-active organic molecules for energy storage

“…The capacity retention of RGO-NO was 89% after 2000 cycles, as derived from the folded RGO-NO structure that shortens the distance of electron transport between radicals. 129 These results suggest that ester bonding is not stable. In another report, N,N′diamino-1,4,5,8-naphthalenetetracarboxylic bisimide (DNTCB)-functionalized GO (GO-DNTCB) was prepared by amidation.…”

Weak Intermolecular Interactions for Strengthening Organic Batteries

“…[91][92][111][112][113][114] 5) Immobilizing the active molecules on the conductive networks via covalent bonds. [115][116][117][118] Through the prefunctionalization of conductive additives (e.g., glassy carbon, Ketjenblack, graphene, CNTs) and reaction of functionalized conductive additives with precursors of organic active materials, the organic molecules can be attached on the conductive additives. This method can thoroughly inhibit the dissolution of the organic molecules and improve the charge transfer, and therefore, the obtained composites showed enhanced capacity and cyclability.…”

Nitroxide radical cathode material with multiple electron reactions

“…Usually, the entanglement of side chains in radical polymers causes irregular distribution of free radicals, unbeneficial for electron hopping. In order to solve this problem, carbon networks were introduced [19][20][21][22][23]. It seems that the n-type reaction shows dependence on the specific types of conductive carbon, like Ketjenblack [24] and graphene [25].…”