A metal-organic framework-derived bifunctional catalyst for hybrid sodium-air batteries

Metal–organic framework-based materials: advances, exploits, and challenges in promoting post Li-ion battery technologies

“…Though modern-generation batteries involving lithium have been exclusively studied to exhibit promising results both in the case of the Li-ion and Li-S batteries, as can be seen in several recent works, 60,61 there are some limitations regarding the direct utilization of Li metal: (a) the utilization of Li-metal as the anode material causes significant safety apprehensions die to the formation of irrepressible Li dendrites, which could pierce the separator and cause an internal short circuit. (b) The formation of dendrites also leads to a reduction in the Coulombic efficiency and cycling performance as a result of the presence of ''unusable Li'' in the disconnected dendrites; (c) apart from the safety concerns, the limited availability of Li-metal on Earth makes it highly expensive.…”

Carbon Dots‐Decorated Carbon‐Based Metal‐Free Catalysts for Electrochemical Energy Storage

“…Thus, a highly efficient and durable catalyst for both ORR and OER is a milestone and bottleneck in metal–air batteries. [ 99 ]…”

“…Thus, a highly efficient and durable catalyst for both ORR and OER is a milestone and bottleneck in metal-air batteries. [99] To build better oxygen electrocatalysts, understanding the mechanism of the electrochemical reactions involving oxygen in the metal-air battery systems is the first step. For the ORR, there are two possible ways on account of two oxygen adsorption types: [100] the one is four-electron (4e) pathway based on the bidentate O 2 adsorption.…”

Micro-nanostructural designs of bifunctional electrocatalysts for metal-air batteries

“…In addition, metal-organic framework (MOF) derived carbon materials and carbonized MOFs are widely used as the ORR and OER catalysts. Recently, a novel bifunctional oxygen electrocatalyst, MOF-N-doped carbon nanotubes (MOF-NCNTs), was prepared through the carbonized of ZIF-67 [79]. The porous cage structure of MOF-NCNTs provided high surface area.…”