College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , China.
Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu 610031 , China.
ACS Appl Mater Interfaces. 2019 Aug 21;11(33):30360-30367. doi: 10.1021/acsami.9b10956. Epub 2019 Aug 12.
Biomass-based energy storage devices have drawn increasing attention owing to their renewability and sustainability, particularly that the heteroatom-doped carbons derived from natural polymers are regarded as the promising candidates in discovering advanced electrode materials for supercapacitors. This work has developed a facile one-pot fabrication strategy toward synthetic pheomelanin nanoparticles with controllable size and chemical composition (i.e., sulfur content) via the copolymerization of dopamine and cysteine. The resulting synthetic pigment materials possess outstanding thermal stability and are able to directly transform into monodispersed S,N-codoped carbon spheres with unaltered morphology. Compared with conventional polydopamine-based carbon spheres, the present carbonized pheomelanin nanoparticles with electroactive sulfur atoms could possess lower charge-transfer resistance and consequently higher specific capacitance (e.g., 243 F g at 1 A g). This research continues to inspire researchers to develop new kinds of energy storage materials based on synthetic biopigment materials.
基于生物质的储能设备因其可再生性和可持续性而引起了越来越多的关注，特别是由天然聚合物衍生的杂原子掺杂碳被认为是发现超级电容器用先进电极材料的有前途的候选材料。本工作通过多巴胺和半胱氨酸的共聚反应，开发了一种简便的一锅法制备具有可控尺寸和化学组成（即硫含量）的合成真黑色素纳米粒子的方法。所得合成颜料材料具有出色的热稳定性，并能够直接转化为形态不变的单分散 S、N 共掺杂碳球。与传统的基于聚多巴胺的碳球相比，本研究中的具有电活性硫原子的碳化真黑色素纳米粒子具有更低的电荷转移电阻，因此具有更高的比电容（例如，在 1 A g 时为 243 F g）。这项研究继续激发研究人员开发基于合成生物颜料材料的新型储能材料。
