3-dimensional interconnected framework of N-doped porous carbon based on sugarcane bagasse for application in supercapacitors and lithium ion batteries
3-dimensional interconnected framework of N-doped porous carbon based on sugarcane bagasse for application in supercapacitors and lithium ion batteries
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DOI：
10.1016/j.jpowsour.2018.04.056
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发表时间：
2018-06
影响因子：
9.2
通讯作者：
Bin Wang;Yunhui Wang;Yueying Peng;Xin Wang;Jing Wang;Jinbao Zhao
中科院分区：
文献类型：
--
作者：
Bin Wang;Yunhui Wang;Yueying Peng;Xin Wang;Jing Wang;Jinbao Zhao
本论文以廉价的农业废弃物甘蔗渣为原料，针状聚苯胺为掺杂剂，制备了氮掺杂的生物质多孔炭。NSBDC具有特殊的三维互联骨架结构、上级分级孔结构和合适的杂原子掺杂水平，在离子存储和高速离子转移方面有着广泛的应用前景。通常，NSBDC在三电极系统中表现出高比电容（1 A g− 1时为298 F g− 1）和倍率性能（20 A g−1时为58.7%的电容保持率），以及高循环稳定性（5000次循环后损失5.5%）。采用NSBDC和NSBDC的前体（甘蔗渣衍生的碳/聚苯胺复合物）分别作为负电极和正电极制备了两电极非对称系统，并且在该非对称系统中验证了高达49.4 Wh kg− 1的能量密度。还组装了基于NSBDC的全对称超级电容器，由于其高能量密度（27.7 Wh kg−1），它可以轻松点亮1.5 V灯泡。此外，为了扩大NSBDC的应用领域，还将其应用于锂离子电池，并确认了在0.1 A g− 1下1148 mAh g − 1的高可逆容量。即使在5 A g−1下，NSBDC在200次循环后仍然可以提供357 mAh g− 1的高可逆容量，表明其上级锂存储能力。
In this work, N-doped biomass derived porous carbon (NSBDC) has been prepared utilizing low-cost agricultural waste--sugarcane bagasse as the prototype, and needle-like PANI as the dopant. NSBDC possesses a special 3D interconnected framework structure, superior hierarchical pores and suitable heteroatom doping level, which benefits a large number of applications on ion storage and high-rate ion transfer. Typically, the NSBDC exhibits the high specific capacitance (298 F g−1at 1 A g−1) and rate capability (58.7% capacitance retention at 20 A g−1), as well as the high cycle stability (5.5% loss over 5000 cycles) in three-electrode systems. A two-electrode asymmetric system has been fabricated employing NSBDC and the precursor of NSBDC (sugarcane bagasse derived carbon/PANI composite) as the negative and positive electrodes, respectively, and an energy density as high as 49.4 Wh kg−1is verified in this asymmetric system. A NSBDC-based whole symmetric supercapacitors has also been assembled, and it can easily light a 1.5 V bulb due to its high energy density (27.7 Wh kg−1). In addition, for expanding the application areas of NSBDC, it is also applied to lithium ion battery, and a high reversible capacity of 1148 mAh g−1at 0.1 A g−1is confirmed. Even at 5 A g−1, NSBDC can still deliver a high reversible capacity of 357 mAh g−1after 200 cycles, indicating its superior lithium storage capability.