Design of Boron Carbonitrides-Polyaniline (BCN-PANI) assembled supercapacitor with high voltage window
Design of Boron Carbonitrides-Polyaniline (BCN-PANI) assembled supercapacitor with high voltage window
复制标题
具有高压窗口的碳氮化硼-聚苯胺（BCN-PANI）组装式超级电容器的设计
DOI：
10.1016/j.jcis.2022.06.133
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发表时间：
2022
影响因子：
9.9
通讯作者：
Xiaopeng Hao
中科院分区：
文献类型：
--
作者：
Dong Shi;Mingzhi Yang;Baoguo Zhang;Haixiao Hu;Zizheng Ai;Yongliang Shao;Jianxing Shen;Yongzhong Wu;Xiaopeng Hao
剥离工艺、PANI修饰和Et4N·BF4电解液的利用有助于构建一种性能优良的BCN-PANI基超级电容器器件，其工作电压是纯PANI器件的3倍。·BCN的有效剥离提高了BCN-PANI样品的电化学性能。·PANI修饰有效地促进了BCN-PANI样品的电容反应。在Et4N·BF4电解液中，BCN的辅助作用使PANI器件的电压窗口增大了3倍，构成了高能量密度的超级电容器器件。碳氮化硼(BCN)在储能和转换领域受到了广泛的关注。然而，双电层行为的储能机理及其叠层结构严重限制了其电容的提高，从而阻碍了其在储能方面的进一步发展。因此，本论文首先选择了超声球磨法制备BCN纳米片，并采用了一种可行的聚苯胺(PANI)修饰方法来促进BCN纳米片的电容反应。首次以1MEt4N·BF4为电解液的BCN-PANI对称超级电容器器件达到了3.0V的高压窗口。3.0V的工作电压是纯PANI器件的3倍，超高能量密度为67.1 W h kg-1，优于大多数已报道的PANI基器件。这种优异的电化学性能为其他储能设备配置碳基复合电极提供了一种很有前途的策略。
Exfoliation process, PANI modification, and utilization of Et 4 N·BF 4 electrolyte help construct a superior BCN-PANI-based supercapacitor device with a wide working voltage that is 3 times that of a pure PANI device. • Efficient exfoliation of BCN improves the electrochemical performance of BCN-PANI samples. • PANI modification effectively boosts the capacitive reaction of BCN-PANI samples. • The assistance of BCN help increase the voltage widow 3 times that of pure PANI device in Et 4 N·BF 4 electrolyte to construct a high-energy-density supercapacitor device. Boron carbonitrides (BCN) have been widely concerned in the field of energy storage and conversion. However, the energy storage mechanism of electrical double-layer behavior and their stacked-layer structure severely limit the improvement of capacitance, thereby hindering their further development in energy storage. Therefore, an ultrasonic-ball milling method was first chosen to obtain BCN nanosheets, together with a feasible way of polyaniline (PANI) modification performed to boost the capacitive reaction of BCN nanosheets. For the first time, a BCN-PANI-based symmetric supercapacitor device can reach a high voltage window of 3.0 V when 1 M Et 4 N·BF 4 was chosen as the electrolyte. The working voltage of 3.0 V is three times that of a device with pure PANI with the ultrahigh energy density of 67.1 W h kg -1 , superior to most of the reported PANI-based devices. The eminent electrochemical performance provides a promising strategy to pave the way for configuring carbon-based multiple composite electrodes for other energy storage devices.