Annealing modification of MXene films with mechanically strong structures and high electrochemical performance for supercapacitor applications
Annealing modification of MXene films with mechanically strong structures and high electrochemical performance for supercapacitor applications
复制标题
具有机械强度结构和高电化学性能的 MXene 薄膜的退火改性，适用于超级电容器应用
DOI：
10.1016/j.jpowsour.2020.228356
复制
发表时间：
2020-09
影响因子：
9.2
通讯作者：
Zhang Lili
中科院分区：
文献类型：
--
作者：
Zhao Xin;Wang Zhe;Dong Jie;Huang Tao;Zhang Qinghua;Zhang Lili
Two-dimensional transition metal carbides and nitrides (MXene) have shown outstanding performances in electrochemical energy storage, but their investigations of both mechanical and electrochemical performance for structural power systems are lack of being discussed. In this work, modified MXene films with mechanically strong structures and high electrochemical performance are obtained via directly annealing strategies. Due to the beneficial chemical composition on the surface and the structural variation under appropriate annealing treatment conditions, the modified Ti3C2TxMXene electrode can deliver an ultrahigh volumetric capacitance of 1590 F cm−3with a gravimetric value of 442 F g−1at 0.5 A g−1, a good rate capability of 1030 F cm−3at 20 A g−1, a cycling stability with a retention of 95.4% after 5000 cycles in the acid electrolyte and a high tensile strength of 32 MPa, demonstrating its great potential as a multifunctional electrode for structural energy and power systems. The influences of different electrolytes on the intercalation-induced electrochemical process of modified MXene films were also probed. Furthermore, the assembled symmetric supercapacitor with the modified Ti3C2TxMXene film demonstrates a favorable volumetric energy density of 15.2 Wh L−1and a power density of 204.8 W L−1.
登录
查看更多内容
影响因子：
27.8
作者：
Narendra Kurra;Nuha A. Alhebshi;H. Alshareef
通讯作者：
Narendra Kurra;Nuha A. Alhebshi;H. Alshareef
影响因子：
19
作者：
Mu, Xinpeng;Wang, Dashuai;Dall'Agnese, Yohan
通讯作者：
Dall'Agnese, Yohan
影响因子：
17.1
作者：
Kwon, Se Ra;Harris, John;Lutkenhaus, Jodie L.
通讯作者：
Lutkenhaus, Jodie L.
影响因子：
56.7
作者：
Lukatskaya, Maria R.;Kota, Sankalp;Gogotsi, Yury
通讯作者：
Gogotsi, Yury
影响因子：
6.2
作者：
Couly, Cedric;Alhabeb, Mohamed;Gogotsi, Yury
通讯作者：
Gogotsi, Yury