Highly conductive colloidal carbon based suspension for flow-assisted electrochemical systems

被引：15

作者：

Alfonso, Marco S. ^{[1
]}

Parant, Helene ^{[1
]}

Yuan, Jinkai ^{[1
]}

Neri, Wilfrid ^{[1
]}

Laurichesse, Eric ^{[1
]}

Kampioti, Katerina ^{[1
]}

Colin, Annie ^{[1
,2
]}

Poulin, Philippe ^{[1
]}

机构：

[1] Univ Bordeaux, Ctr Rech Paul Pascal, CNRS, 115 Ave Schweitzer, F-33600 Pessac, France

[2] Univ PSL, MIE CBI ESPCI Paris, 10 Rue Vauquelin, F-75005 Paris, France

来源：

ISCIENCE | 2021年 / 24卷 / 05期

关键词：

SELF-DISCHARGE; BLACK SUSPENSIONS; PERCOLATION; ELECTRODES; BATTERIES; PERFORMANCE; RHEOLOGY;

D O I：

10.1016/j.isci.2021.102456

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Carbon suspension electrodes are promising for flow-assisted electrochemical energy storage systems. They serve as flowable electrodes in electrolyte solutions of flow batteries, or flow capacitors. They can also be used for other applications such as capacitive deionization of water. However, developments of such suspensions remain challenging. The suspensions should combine low viscosity and high electronic conductivity for optimized performances. In this work, we report a flowable aqueous carbon dispersion which exhibits a viscosity of only 2 Pa.s at a shear rate of 5 s(-1) for a concentration of particles of 7 wt%. This suspension displays an electronic conductivity of 65 mS/cm, nearly two orders of magnitude greater than previously investigated related materials. The investigated suspensions are stabilized by sodium alginate and arabic gum in the presence of ammonium sulfate. Their use in flowable systems for the storage and discharge of electrical charges is demonstrated.

引用

页数：20

共 32 条

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