Synthetic Biopigment Supercapacitors
Synthetic Biopigment Supercapacitors
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合成生物色素超级电容器
DOI：
10.1021/acsami.9b10956
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发表时间：
2019
影响因子：
9.5
通讯作者：
Li Yiwen
中科院分区：
文献类型：
--
作者：
Yang Lei;Gu Bingni;Chen Zhan;Yue Yong;Wang Wenxuan;Zhang Haitao;Liu Xianhu;Ren Shijie;Yang Weiqing;Li Yiwen
基于生物质的储能装置由于其可再生性和可持续性而受到越来越多的关注，特别是源自天然聚合物的杂原子掺杂碳被认为是发现超级电容器先进电极材料的有希望的候选者。这项工作开发了一种简单的一锅法制造策略，通过多巴胺和半胱氨酸的共聚来合成具有可控尺寸和化学成分（即硫含量）的褐黑素纳米颗粒。所得的合成颜料材料具有出色的热稳定性，并且能够直接转化为形态未改变的单分散S,N共掺杂碳球。与传统的基于聚多巴胺的碳球相比，本发明的具有电活性硫原子的碳化褐黑素纳米颗粒可以具有较低的电荷转移电阻，从而具有更高的比电容（例如，243 F g–1at 1 A g–1）。这项研究继续激励研究人员开发基于合成生物色素材料的新型储能材料。
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–1at 1 A g–1). This research continues to inspire researchers to develop new kinds of energy storage materials based on synthetic biopigment materials.