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Nitrogen-Deficient Graphitic Carbon Nitride with Enhanced Performance for Lithium Ion Battery Anodes
ACS Nano ( IF 15.8 ) Pub Date : 2017-12-12 00:00:00 , DOI: 10.1021/acsnano.7b07116 Jingjing Chen 1 , Zhiyong Mao 1 , Lexi Zhang 2 , Dajian Wang 2 , Ran Xu 2 , Lijian Bie 2 , Bradley D. Fahlman 3
ACS Nano ( IF 15.8 ) Pub Date : 2017-12-12 00:00:00 , DOI: 10.1021/acsnano.7b07116 Jingjing Chen 1 , Zhiyong Mao 1 , Lexi Zhang 2 , Dajian Wang 2 , Ran Xu 2 , Lijian Bie 2 , Bradley D. Fahlman 3
Affiliation
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Graphitic carbon nitride (g-C3N4) behaving as a layered feature with graphite was indexed as a high-content nitrogen-doping carbon material, attracting increasing attention for application in energy storage devices. However, poor conductivity and resulting serious irreversible capacity loss were pronounced for g-C3N4 material due to its high nitrogen content. In this work, magnesiothermic denitriding technology is demonstrated to reduce the nitrogen content of g-C3N4 (especially graphitic nitrogen) for enhanced lithium storage properties as lithium ion battery anodes. The obtained nitrogen-deficient g-C3N4 (ND-g-C3N4) exhibits a thinner and more porous structure composed of an abundance of relatively low nitrogen doping wrinkled graphene nanosheets. A highly reversible lithium storage capacity of 2753 mAh/g was obtained after the 300th cycle with an enhanced cycling stability and rate capability. The presented nitrogen-deficient g-C3N4 with outstanding electrochemical performances may unambiguously promote the application of g-C3N4 materials in energy-storage devices.
中文翻译：
氮离子不足的石墨化氮化碳，可增强锂离子电池阳极的性能
具有石墨的层状特征的石墨碳氮化物（gC 3 N 4）被索引为高含量的氮掺杂碳材料，在储能装置中的应用引起了越来越多的关注。但是，由于gC 3 N 4的氮含量很高，因此导电性很差，并导致严重的不可逆容量损失。在这项工作中，镁热脱氮技术被证明可以降低gC 3 N 4的氮含量（尤其是石墨氮），从而增强锂存储性能，作为锂离子电池阳极。得到的氮不足gC 3 N 4（ND-gC 3N 4）表现出更薄，更多孔的结构，该结构由大量相对较低的氮掺杂皱纹石墨烯纳米片组成。在第300次循环后获得了2753 mAh / g的高度可逆锂存储容量，并具有增强的循环稳定性和倍率性能。所提出的具有优异的电化学性能的缺氮gC 3 N 4可以毫无疑问地促进gC 3 N 4材料在储能装置中的应用。
更新日期：2017-12-12
中文翻译：
氮离子不足的石墨化氮化碳，可增强锂离子电池阳极的性能
具有石墨的层状特征的石墨碳氮化物（gC 3 N 4）被索引为高含量的氮掺杂碳材料，在储能装置中的应用引起了越来越多的关注。但是，由于gC 3 N 4的氮含量很高，因此导电性很差，并导致严重的不可逆容量损失。在这项工作中，镁热脱氮技术被证明可以降低gC 3 N 4的氮含量（尤其是石墨氮），从而增强锂存储性能，作为锂离子电池阳极。得到的氮不足gC 3 N 4（ND-gC 3N 4）表现出更薄，更多孔的结构，该结构由大量相对较低的氮掺杂皱纹石墨烯纳米片组成。在第300次循环后获得了2753 mAh / g的高度可逆锂存储容量，并具有增强的循环稳定性和倍率性能。所提出的具有优异的电化学性能的缺氮gC 3 N 4可以毫无疑问地促进gC 3 N 4材料在储能装置中的应用。
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