3D porous cementitious electrolytes with “stream-reservoir” ionic channels for high multifunctional performance structural supercapacitors
Literature Information
Muyang Shi, Dong Zhang
Structural supercapacitors (SSCs) have attracted extensive attention due to load bearing/energy storage in zero energy buildings (ZEBs). Unfortunately, SSCs normally suffer from low energy density owing to the conventional cementitious electrolytes' poor ionic conductivity and dissatisfactory interface bonding. Herein, a new “stream-reservoir” porous cementitious electrolyte is prepared by a simple foaming strategy. The ionic conductivity of the resulting material reaches 13.1 mS cm−1. The “stream-reservoir” structure endows the cementitious electrolyte with abundant ion channels and certain mechanical stability, effectively reducing the interfacial contact resistance with the electrode. Based on the porous cementitious electrolyte, the fabricated load-bearing/energy storage integrated supercapacitor delivers an energy density of 32.8 μW h cm−2 and a power density of 2.5 mW cm−2 and suffers a small capacitance degradation. Additionally, the supercapacitor can maintain stable electrochemical behavior while withstanding external loads, which is a rarely studied aspect in other reports. The obtained multifunctional performances may provide intriguing opportunities for ZEBs and electrochemical energy storage.
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment
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