Coordination Polymers for High-Capacity Li-Ion Batteries: Metal-Dependent Solid-State Reversibility.

Electrode materials exploiting multielectron-transfer processes are essential components for large-scale energy storage systems. Organic-based electrode materials undergoing distinct molecular redox transformations can intrinsically circumvent the structural instability issue of conventional inorganic-based host materials associated with lattice volume expansion and pulverization. Yet, the fundamental mechanistic understanding of metal-organic coordination polymers toward the reversible electrochemical processes is still lacking.

Organic-Catholyte-Containing Flexible Rechargeable Lithium Batteries.

Organic-catholyte-containing flexible rechargeable lithium batteries are developed using fused cyclic quinone derivatives. The structural dependence of the quinone isomers in the liquid catholyte is studied using a combined experimental and theoretical approach. Stable electrochemical performance even under severe bending/stretching deformations is successfully demonstrated by prototype batteries containing liquid catholytes.

Sodium terephthalate as an organic anode material for sodium ion batteries.

Disodium terephthalate and its various derivatives are synthesized via simple acid-base chemistry for anode materials in Na ion batteries. They show excellent electrochemical performance, including little capacity fading over 90 cycles, ideal redox potential, and excellent rate performance, making them promising candidates for Na ion batteries.