Tensile force-induced tearing and collapse of ultrathin carbon shells to surface-wrinkled grape skins for high performance supercapacitor electrodes
Tensile force-induced tearing and collapse of ultrathin carbon shells to surface-wrinkled grape skins for high performance supercapacitor electrodes
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用于高性能超级电容器电极的超薄碳壳到表面皱纹葡萄皮的拉伸力诱导撕裂和塌陷
DOI：
10.1039/c7ta03113k
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发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
郑文君
中科院分区：
文献类型：
--
作者：
张国锋;张晶;秦清;崔莹雪;罗文皓;靳岑;孙燕;郑文君
以葡萄糖为碳源，通过简单的模板水热法和随后的张力诱导撕裂和塌陷成功制备了介孔碳纳米葡萄皮。所得的碳纳米葡萄皮具有从周围卷起的纳米片的新颖结构，其保持了纳米片的可折叠性。然而，与易于聚集或重新堆叠的碳纳米片不同，碳纳米葡萄皮由于由乳制侧引起的卷曲力而彼此分离。对于在600 °C下获得的产物，实现了1570.9 m2 g-1的最大比表面积和2.429 m3 g-1的总孔体积。与在700 °C下获得的碳纳米片和碳空心球相比，在700 °C下获得的产物用作超级电容器的电极材料时，在0.1 A g−1下表现出更高的比电容268 F g−1，在10 A g − 1下表现出更高的倍率比电容170 F g−1，并且在双电极系统中在2 A g−1下10000次循环后具有更好的循环稳定性，电容保持率为94.2%。
With glucose as a highly accessible carbon source, mesoporous carbon nano grape skins were successfully fabricated via a facile template-based hydrothermal method and subsequent tensile force-induced tearing and collapse. The resulting carbon nano grape skins possess a novel structure as a nanosheet rolled up from the around, which maintains the ultrathin properties of the nanosheets. However, unlike carbon nanosheets, which are prone to aggregation or restacking, the carbon nano grape skins were separated from each other due to the crimp force induced by the rolled side. The largest specific surface area of 1570.9 m2 g−1 and the total pore volume of 2.429 m3 g−1 were achieved for the product obtained at 600 °C. Compared to carbon nanosheets and carbon hollow spheres obtained at 700 °C, the products obtained at 700 °C, when used as electrode materials for supercapacitors, showed a much higher specific capacitance of 268 F g−1 at 0.1 A g−1, a higher rate specific capacitance of 170 F g−1 at 10 A g−1, and better cycling stability with 94.2% capacitance retention after 10 000 cycles at 2 A g−1 in a two-electrode system.
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影响因子：
4.6
作者：
Zuo-Xi Li;Kang-Yu Zou;Xue Zhang;Tongxin Han;Ying Yang
通讯作者：
Zuo-Xi Li;Kang-Yu Zou;Xue Zhang;Tongxin Han;Ying Yang
影响因子：
10.9
作者：
Dong Luo;Lihua Gan;Mingxian Liu;Dongmei Sun
通讯作者：
Dongmei Sun
影响因子：
64.8
作者：
Stankovich, Sasha;Dikin, Dmitriy A.;Ruoff, Rodney S.
通讯作者：
Ruoff, Rodney S.
影响因子：
--
作者：
Le Yu;Lei Zhang;H. Wu;X. Lou
通讯作者：
Le Yu;Lei Zhang;H. Wu;X. Lou
影响因子：
3.3
作者：
Schniepp, HC;Li, JL;Aksay, IA
通讯作者：
Aksay, IA