A one-pot synthesis of nitrogen doped porous MXene/TiO2 heterogeneous film for high-performance flexible energy storage
A one-pot synthesis of nitrogen doped porous MXene/TiO2 heterogeneous film for high-performance flexible energy storage
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一锅合成氮掺杂多孔 MXene/TiO2 异质薄膜用于高性能柔性储能
DOI：
10.1016/j.cej.2021.130765
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发表时间：
2021
影响因子：
15.1
通讯作者：
Jian Xu
中科院分区：
文献类型：
--
作者：
Jiali Yu;Minling Zeng;Jie Zhou;Houdao Chen;Guangtao Cong;Huichao Liu;Muwei Ji;Caizhen Zhu;Jian Xu
在增强柔性MXene电极的储能性能方面，杂原子掺杂和引入电活性“间隔物”被证明是有效的策略。在这项工作中，探索了一种面部保护性水热方法，在一锅中合成氮掺杂多孔 MXene/TiO2 异质结构，使得多孔氮掺杂 MXene 的导电性保持良好，并受控原位生成均匀分散的电活性 TiO2 间隔物。这种独特的杂化结构提供了以互补的简单方式整合多种物理和化学优势的机会。因此，基于N掺杂多孔MXene/TiO2异质层组装的独立式薄膜电极表现出优异的储能性能，其比电容值为2194.33 mF cm−2(918.69 F g−1)，优于之前报道的大多数杂原子掺杂MXene电极。此外，薄膜电极具有优异的循环性能，10,000次循环后电容保持率为74.39%，所制造的柔性超级电容器在受到机械变形时电容性能几乎没有变化，表明其具有优异的柔韧性和稳定性。这项工作提出了一种通过 N 掺杂和插入“间隔物”来修饰 MXene 的简单方法，以增强电化学性能，并为应用于高度灵活和集成的储能设备奠定了令人兴奋的潜力。
In terms of enhancing the energy storage performance of flexible MXene electrode, both heteroatom doping and introducing electroactive “spacers” are proved to be effective strategies. In this work, a facial protective hydrothermal method is explored to synthesis nitrogen doped porous MXene/TiO2heterostructure in one pot, which enables a well preserved conductivity of porous N-doped MXene and controlled in-situ generation of uniformly dispersed electroactive TiO2spacers. This unique hybridized structure provides a chance to integrate several physical and chemical advantages in a complementary easy way. As a result, the assembled freestanding film electrode based on the N-doped porous MXene/TiO2heterogeneous layers demonstrates excellent energy storage performance with an outstanding specific capacitance value of 2194.33 mF cm−2(918.69 F g−1), which outperforms most of the heteroatom-doped MXene electrodes reported previously. Besides, the film electrode delivers excellent cycling performance with a 74.39% capacitance retention after 10,000 cycles and the as fabricated flexible supercapacitor displays almost no changes on capacitive performance when subjected to mechanical deformations, indicating its excellent flexibility and stability. This work presents a simple way of modifying MXene with N doping and inserting “spacer” for enhancing the electrochemical performance, and builds up an exciting potential for applying to highly flexible and integrated energy storage devices.
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影响因子：
29.4
作者：
Wenji Yang;Jie Yang;J. Byun;F. P. Moissinac;Jiaqi Xu;S. Haigh;M. Domingos;M. Bissett;R. Dryfe-R
通讯作者：
Wenji Yang;Jie Yang;J. Byun;F. P. Moissinac;Jiaqi Xu;S. Haigh;M. Domingos;M. Bissett;R. Dryfe-R
影响因子：
27.8
作者：
Y. Yoon;Minhe Lee;S. Kim;Garam Bae;Wooseok Song;S. Myung;Jongsun Lim;S. Lee;Tae-Hyung Zyung;K. An
通讯作者：
Y. Yoon;Minhe Lee;S. Kim;Garam Bae;Wooseok Song;S. Myung;Jongsun Lim;S. Lee;Tae-Hyung Zyung;K. An
用于柔性全固态超级电容器的高电容层间氢键金属卟啉框架/MXene混合薄膜
影响因子：
13.3
作者：
Weiwei Zhao;Jiali Peng;Weikang Wang;Beibei Jin;Tiantian Chen;Shujuan Liu;Qiang Zhao;Wei Huang
通讯作者：
Wei Huang
影响因子：
15.1
作者：
Yuanming Wang;Xue Wang;Xiaolong Li;Yang Bai;Huanhao Xiao;Yang Liu;Guohui Yuan
通讯作者：
Yuanming Wang;Xue Wang;Xiaolong Li;Yang Bai;Huanhao Xiao;Yang Liu;Guohui Yuan
影响因子：
20.4
作者：
Amiri, Ahmad;Chen, Yijun;Naraghi, Mohammad
通讯作者：
Naraghi, Mohammad