Rational Selection of Carbon Fiber Properties for High-Performance Textile Electrodes in Bioelectrochemical Systems

摘要: Novel applications of bioelectrochemical systems (BES) are emerging constantly, but the majority still lacks economic viability. Especially use electrochemical system components without adaptation to BES requirements causes poor exploitation potential performance. The electrode material is one central component that determines While commercial carbon fiber (CF) fabrics commonly used, their customizability as two- or three-dimensional for rarely investigated. Using pure cultures S. oneidensis MR-1, we identified CF properties impacting bacterial current generation: 1. removal sizing (protective coating) great importance all fibers studied, it acts an electrical insulator. By desizing, maximum density (jmax) increased by up 40-fold. 2. Alteration filament surface chemistry results in accelerated initial development generation, hardly affected. 3. A specific yarn structure, stretch-broken yarn, supports exceptionally high densities. good performance correlated presence free ends (responsible 41 % increase), which characteristic this yarn. 4. Moreover, a combination these with degree graphitization enhances fabric 100 %. demonstrate selection can greatly influence achievable fabrics, and thereby contributes rational engineering based electrodes be tailored many envisaged.