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Highly Compressible Carbon Sponge Supercapacitor Electrode with Enhanced Performance by Growing Nickel–Cobalt Sulfide Nanosheets
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acsami.7b19043 Xu Liang 1 , Kaiwen Nie 1 , Xian Ding 1 , Liqin Dang 1 , Jie Sun 1 , Feng Shi 1 , Hua Xu 1 , Ruibin Jiang 1 , Xuexia He 1 , Zonghuai Liu 1 , Zhibin Lei 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acsami.7b19043 Xu Liang 1 , Kaiwen Nie 1 , Xian Ding 1 , Liqin Dang 1 , Jie Sun 1 , Feng Shi 1 , Hua Xu 1 , Ruibin Jiang 1 , Xuexia He 1 , Zonghuai Liu 1 , Zhibin Lei 1
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The development of compressible supercapacitor highly relies on the innovative design of electrode materials with both superior compression property and high capacitive performance. This work reports a highly compressible supercapacitor electrode which is prepared by growing electroactive NiCo2S4 (NCS) nanosheets on the compressible carbon sponge (CS). The strong adhesion of the metallic conductive NCS nanosheets to the highly porous carbon scaffolds enable the CS–NCS composite electrode to exhibit an enhanced conductivity and ideal structural integrity during repeated compression–release cycles. Accordingly, the CS–NCS composite electrode delivers a specific capacitance of 1093 F g–1 at 0.5 A g–1 and remarkable rate performance with 91% capacitance retention in the range of 0.5–20 A g–1. Capacitance performance under the strain of 60% shows that the incorporation of NCS nanosheets in CS scaffolds leads to over five times enhancement in gravimetric capacitance and 17 times enhancement in volumetric capacitance. These performances enable the CS–NCS composite to be one of the promising candidates for potential applications in compressible electrochemical energy storage devices.
中文翻译：
通过生长镍钴硫化物纳米片增强性能的高压缩碳海绵超级电容器电极
可压缩超级电容器的发展高度依赖于具有卓越压缩性能和高电容性能的电极材料的创新设计。这项工作报告了一种高度可压缩的超级电容器电极，该电极是通过在可压缩碳海绵（CS）上生长电活性NiCo 2 S 4（NCS）纳米片而制备的。金属导电NCS纳米片与高度多孔的碳支架的牢固粘附力使CS–NCS复合电极在反复的压缩释放循环过程中表现出增强的电导率和理想的结构完整性。因此，CS–NCS复合电极在0.5 A g –1时可提供1093 F g –1的比电容以及91％的电容保持率（在0.5–20 A g –1范围内）时，具有出色的速率性能。在60％应变下的电容性能表明，在CS支架中掺入NCS纳米片可导致重量电容增强5倍以上，体积电容增强17倍。这些性能使CS–NCS复合材料成为可压缩电化学储能设备中潜在应用的有希望的候选者之一。
更新日期：2018-03-06
中文翻译：
通过生长镍钴硫化物纳米片增强性能的高压缩碳海绵超级电容器电极
可压缩超级电容器的发展高度依赖于具有卓越压缩性能和高电容性能的电极材料的创新设计。这项工作报告了一种高度可压缩的超级电容器电极，该电极是通过在可压缩碳海绵（CS）上生长电活性NiCo 2 S 4（NCS）纳米片而制备的。金属导电NCS纳米片与高度多孔的碳支架的牢固粘附力使CS–NCS复合电极在反复的压缩释放循环过程中表现出增强的电导率和理想的结构完整性。因此，CS–NCS复合电极在0.5 A g –1时可提供1093 F g –1的比电容以及91％的电容保持率（在0.5–20 A g –1范围内）时，具有出色的速率性能。在60％应变下的电容性能表明，在CS支架中掺入NCS纳米片可导致重量电容增强5倍以上，体积电容增强17倍。这些性能使CS–NCS复合材料成为可压缩电化学储能设备中潜在应用的有希望的候选者之一。
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