Lignosulfonate (LS) is a large‐scale surplus product of the forest and paper industries, and has primarily been utilized as a low‐cost plasticizer in making concrete for the construction industry. LS is an anionic redox‐active polyelectrolyte and is a promising candidate to boost the charge capacity of the positive electrode (positrode) in redox‐supercapacitors. Here, the physical‐chemical investigation of how this biopolymer incorporates into the conducting polymer PEDOT matrix, of the positrode, by means of counter‐ion exchange is reported. Upon successful incorporation, an optimal access to redox moieties is achieved, which provides a 63% increase of the resulting stored electrical charge by reversible redox interconversion. The effects of pH, ionic strength, and concentrations, of included components, on the polymer–polymer interactions are optimized to exploit the biopolymer‐associated redox currents. Further, the explored LS‐conducting polymer incorporation strategy, via aqueous synthesis, is evaluated in an up‐scaling effort toward large‐scale electrical energy storage technology. By using an up‐scaled production protocol, integration of the biopolymer within the conducting polymer matrix by counter‐ion exchange is confirmed and the PEDOT‐LS synthesized through optimized strategy reaches an improved charge capacity of 44.6 mAh g⁻¹.

中文翻译：

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通过反离子交换将木质素磺酸盐与导电聚合物孪生，以进行大规模的电存储

木质素磺酸盐（LS）是森林和造纸工业的大规模过剩产品，主要用作制造建筑混凝土的低成本增塑剂。LS是一种阴离子氧化还原活性聚电解质，是提高氧化还原超级电容器中正极（正电极）充电容量的有前途的候选者。在此，报告了如何通过抗衡离子交换将该生物聚合物掺入正电极的导电聚合物PEDOT基质中的物理化学研究。成功结合后，可实现最佳的氧化还原部分，这通过可逆的氧化还原互变使所存储的电荷增加了63％。pH，离子强度和浓度对所含组分的影响，通过优化聚合物-聚合物相互作用，可以利用生物聚合物相关的氧化还原电流。此外，通过大规模合成蓄能技术，对通过水合成探索的LS导电聚合物的掺入策略进行了评估。通过扩大规模的生产协议，通过反离子交换将生物聚合物整合到导电聚合物基质中，通过优化策略合成的PEDOT-LS的充电容量达到了44.6 mAh g。^-1。