Design of a Functionalized Carbon Cloth Substrate for a Ni and Co- Based High-Performance Supercapacitor
Design of a Functionalized Carbon Cloth Substrate for a Ni and Co- Based High-Performance Supercapacitor
复制标题
镍钴基高性能超级电容器功能化碳布基底的设计
DOI：
10.1021/acsaem.9b00515
复制
发表时间：
2019
影响因子：
6.4
通讯作者：
Houyi Ma
中科院分区：
文献类型：
--
作者：
Mengnan Hua;Ting Chen;Houyi Ma
由于过渡金属材料本身的电化学性质以及基底与这些材料之间不协调的共存关系而导致的反应动力学抑制仍然是开发高性能超级电容器（SC）的主要问题。本文以棉纺布为原材料，设计了一种功能化N，P双掺杂多孔碳布（NPPCC）基底，以及以下NPPCC负载的Ni和Co的硫化物在这种新型基底中表现出的具有结构缺陷和杂原子掺杂的多孔碳网络不仅有利于坚固和良好地制备SC，活性材料的有条件生长，而且改善了界面相互关系，从而通过强耦合效应和基底与活性材料之间的稳定结合，导致混合电极的增强的反应动力学。因此，NPPCC-BS电极作为正极被制成全固态非对称SC装置;该装置提供高能量存储和供应容量（45.8Wh kg-1，15.7kW kg-1）和优异的长期循环寿命（15000次循环后容量保持率为88.6%）。
Depressed reaction kinetics due to the electrochemical properties of transition metal materials themselves and a discordant coexistence relationship between substrates and these kinds materials remain major problems in developing high-performance supercapacitors (SCs). Here, a functionalized N, P dual-doped porous carbon cloth (NPPCC) substrate is designed using cotton spinning cloth as the original material, and the following NPPCC-supported Ni and Co bimetallic sulfide (NPPCC-BS) is applied to construct an SC. The porous carbon networks with structural defects and heteroatom doping exhibited in such a novel substrate are beneficial to not only robust and well-conditioned growth of active materials but also improved interface interrelation, thereby resulting in enhanced reaction kinetics of the hybrid electrode via strong coupling effect and stable combination between substrate and active materials. Accordingly, the NPPCC-BS electrode as positive electrode is fabricated into an all-solid-state asymmetric SC device; this device delivers high energy storage and supply capacity (45.8 Wh kg–1at 15.7 kW kg–1) and an excellent long-term cycling life (88.6% capacity retention after 15000 cycles).