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Design of All-Solid-State Hybrid Supercapacitor Based on Mesoporous CoSnO3@RGO Nanorods and B-doped RGO nanosheets Grown on Ni foam for Energy Storage Devices of High Energy Density
Applied Surface Science ( IF 6.7 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.apsusc.2020.148354
T. Kavinkumar , Hong H. Lee , Do-Heyoung Kim

Abstract Designing advanced hybrid supercapacitors (SCs) with high energy density and long-term cycling stability remains a vital hurdle. We introduce CoSnO3, a battery anode material, to the SCs as a positive electrode through a simple synthesis of unique mesoporous CoSnO3 nanorods@reduced graphene oxide (RGO) composite, which delivers a specific capacity of 855.9 C g-1 (1902 F g-1). A porous boron-doped RGO nanosheets (B-RGO) electrode fabricated provides a remarkable specific capacity of 305.2 C g-1 (254 .4 F g-1) in 2 M KOH. Hybrid supercapacitor constructed with CoSnO3@RGO composite (positive electrode) and B-RGO nanosheets (negative electrode) has a voltage window of 1.5 V with a specific capacity of 286.1 C g-1 (190.7 F g-1) at 2 A g-1. The assembled device provides a remarkable energy density of 76.1 Wh kg-1 at the power density of 1915.8 W kg-1. It is also endowed with suitable cycling stability, retaining more than 93% of its capacity after 10,000 cycles.

中文翻译:

基于介孔 CoSnO3@RGO 纳米棒和在泡沫镍上生长的 B 掺杂 RGO 纳米片的全固态混合超级电容器的设计,用于高能量密度的储能设备

摘要 设计具有高能量密度和长期循环稳定性的先进混合超级电容器 (SC) 仍然是一个重要的障碍。我们通过简单合成独特的介孔 CoSnO3 纳米棒@还原氧化石墨烯 (RGO) 复合材料将电池负极材料 CoSnO3 作为正极引入 SCs,其比容量为 855.9 C g-1 (1902 F g- 1)。制造的多孔掺硼 RGO 纳米片 (B-RGO) 电极在 2 M KOH 中提供了 305.2 C g-1 (254 .4 F g-1) 的显着比容量。由 CoSnO3@RGO 复合材料(正极)和 B-RGO 纳米片(负极)构成的混合超级电容器具有 1.5 V 的电压窗口,在 2 A g-下的比容量为 286.1 C g-1 (190.7 F g-1) 1. 组装后的设备在 1915 年的功率密度下提供了 76.1 Wh kg-1 的非凡能量密度。8 W kg-1。它还具有适当的循环稳定性,在 10,000 次循环后仍保持其容量的 93% 以上。
更新日期:2021-03-01
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