Hierarchical Co-doped SnS2@Ni(OH)2 double-shell crystalline structure on carbon cloth with gradient pore distribution for superior capacitance,CrystEngComm

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Hierarchical Co-doped SnS2@Ni(OH)2 double-shell crystalline structure on carbon cloth with gradient pore distribution for superior capacitance
CrystEngComm ( IF 2.6 ) Pub Date : 2020-07-02 , DOI: 10.1039/d0ce00504e
Kuan Deng _{1,

2,

3,

4} , Feifei Wang _{1,

2,

3,

4} , Wen Tian _{1,

2,

3,

4} , Zhufeng Hu _{1,

2,

3,

4} , Hualian Zhang _{1,

2,

3,

4} , Kui Ma _{1,

2,

3,

4} , Caihong Wang _{1,

2,

3,

4} , Hairong Yue _{1,

2,

3,

4} , Yu Xin Zhang _{4,

5,

6,

7} , Junyi Ji _{1,

2,

3,

4,

8}

Affiliation

Hierarchical Co-doped SnS₂@Ni(OH)₂ double-shell nanosheet arrays are coated on carbon cloth via a two-step solvothermal method. The vertically aligned and ultrathin nanosheet arrays with gradient pore distribution and hydrophilic nature can facilitate electrolyte infiltration and avoid the “dead volume,” while the densely-packed SnS₂ array with high intrinsic electrical conductivity can bridge carbon cloth and Ni(OH)₂ to improve electron transfer. The SnS₂@Co–Ni(OH)₂/CC-3 electrode can achieve high areal capacitance (5.41 F cm⁻² at 1 mA cm⁻²), good rate capability, and cyclic stability (93.92% capacitance retention after 5000 cycles) in a three-electrode system. Moreover, an asymmetric supercapacitor (ASC) device is fabricated with the help of SnS₂@Co–Ni(OH)₂/CC composites and activated microwave-exfoliated graphene oxide, which achieves the highest energy density of 57.2 W h kg⁻¹ and a maximum power density of 8.0 kW kg⁻¹.

中文翻译：

具有梯度孔分布的碳布上分层共掺杂的SnS2 @ Ni（OH）2共壳双壳晶体结构，可提供出色的电容

通过两步溶剂热法将分层共掺杂的SnS ₂ @Ni（OH）₂双壳纳米片阵列涂覆在碳布上。与梯度孔隙分布和亲水性质的垂直对准和超薄纳米片阵列可以促进电解质的渗透和避免“死体积”，而密集封装的SnS ₂阵列具有高固有导电率可以弥合碳布和Ni（OH）₂，以改善电子传递。所述SNS ₂ @共同的Ni（OH）₂ / CC-3电极可以实现高面积电容（5.41˚F厘米^-2以1mA厘米^-2），良好的倍率能力和三电极系统中的循环稳定性（5000次循环后的电容保持率为93.92％）。此外，借助SnS ₂ @ Co-Ni（OH）₂ / CC复合材料和活化的微波剥落氧化石墨烯制造了不对称超级电容器（ASC）装置，该装置的最高能量密度为57.2 W h kg ^-1和。最大功率密度为8.0 kW kg ^-1。

更新日期：2020-08-03

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