Rational Design of Electrode Materials for Advanced Supercapacitors: From Lab Research to Commercialization

Abstract

Under the big background of sustainable development, energy utilization is undergoing a fast and large shift toward electricity

Unveiling the capacitive energy storage of linear CTAB or tetrahedral TBAB organic-molecule intercalated MoS2

“…Supercapacitors hold great promise as large-scale fast energy storage devices due to their low cost, easy processability, safe operation, long cycle life (>10 6 charge-discharge cycles) and rapid charging/discharging capability. [1][2][3][4] The electrode material is one of the most important parts of a supercapacitor. Therefore, the design of high-performance electrode materials and the study of energy storage mechanisms have important scientic signicance for the development of supercapacitors.…”

Graphitic Co‐Products of Clean Hydrogen Production Enabling High‐Rate‐Performance Dual‐Carbon Batteries

“…[27] Alternatively, supercapacitors are another type of energy storage device with the advantages of high power density and fast charge-discharge rates that are used in consumer electronics and emergency power supplies. [28][29][30] Although both cations and anions are involved in the energy storage of DIBs and supercapacitors, supercapacitors have a different energy storage mechanism, involving the physisorption of ions on electrode surfaces to form an electric double layer and fast electrode surface redox reactions. Electrode materials used in supercapacitors are usually activated carbon (AC), graphene, or carbon nanotubes with a large specific surface area (e.g., >2000 m 2 kg −1 for AC) and high electrical conductivity.…”

“…Electrode materials used in supercapacitors are usually activated carbon (AC), graphene, or carbon nanotubes with a large specific surface area (e.g., >2000 m 2 kg −1 for AC) and high electrical conductivity. [28][29][30][31][32] Supercapacitors' low energy storage density is their key drawback. [18,28,30,33,34] Dual-carbon batteries (DCBs) are a subcategory in DIBs, utilizing carbon materials as both cathode and anode materials.…”

“…[28][29][30][31][32] Supercapacitors' low energy storage density is their key drawback. [18,28,30,33,34] Dual-carbon batteries (DCBs) are a subcategory in DIBs, utilizing carbon materials as both cathode and anode materials. They offer unique advantages, such as lower cost, better sustainability, and high working voltage (>4.5 V).…”

Nonporous, conducting bimetallic coordination polymers with an advantageous electronic structure for boosted faradaic capacitance

“…6,7 One advisable strategy is to construct the asymmetric SCs by integrating high-capacity pseudocapacitive or battery-type electrode materials as one of the two electrodes of the device, which is essential to broaden the operating voltage and thus optimize the energy density. 8 Transition metal oxides (MnO 2 , Nb 2 O 5 , and Fe 2 O 3 ), 9–11 conducting polymers 5 and two-dimensional layered materials (Ti 3 C 2 and MoS 2 ) 12,13 have been broadly employed in asymmetric SCs that can achieve high energy density. Nevertheless, the frustrating electrical conductivity or structural stability of these materials severely limits the power density and cycling lifespan of SCs.…”