Vertical few-layer graphene/metalized Si-nanocone arrays as 3D electrodes for solid-state supercapacitors with large areal capacitance and superior rate capability

Quan Baogang; Meng Yuena; Li Lin; Yao Zehan; Liu Zhe; Wang Kai; Wei Zhixiang; Gu Changzhi; Li Junjie

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Vertical few-layer graphene/metalized Si-nanocone arrays as 3D electrodes for solid-state supercapacitors with large areal capacitance and superior rate capability

机译：垂直多层石墨烯/金属化Si-纳米酮阵列作为3D电极，用于具有大面积电容和出色倍率能力的固态超级电容器

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A strategy to promote the energy density of graphene-based supercapacitors by a combination of dry etching and chemical vapor deposition (CVD) techniques is demonstrated. A three dimensional (3D) electrode is composed of vertically oriented graphene that is deposited on metalized silicon nanocones. The design of the 3D electrodes improves specific surface area, electrolyte ion migration and electrical contact, resulting in an enhancement of areal capacitance and rate capability. Furthermore, a solid-state supercapacitor was prepared based on the 3D graphene electrodes and gel polymer electrolyte. The 3D electrode with 10 min of CVD growth of graphene endows the electrical double layer capacitor with the highest areal capacitance of 667.2 mu F cm(-2), which is larger than that of supercapacitors with flat electrodes. (C) 2017 Elsevier B.V. All rights reserved.

机译：通过干蚀刻和化学气相沉积（CVD）技术的结合，可以提高石墨烯基超级电容器的能量密度。三维（3D）电极由沉积在金属化硅纳米锥上的垂直方向的石墨烯组成。 3D电极的设计可改善比表面积，电解质离子迁移和电接触，从而提高面电容和倍率能力。此外，基于3D石墨烯电极和凝胶聚合物电解质制备了固态超级电容器。具有石墨烯CVD生长10分钟的3D电极使双层电容器具有最高的面电容667.2μF cm（-2），这比带有扁平电极的超级电容器要大。（C）2017 Elsevier B.V.保留所有权利。

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来源
《Applied Surface Science》 |2017年第may15期|238-245|共8页
作者
Quan Baogang; Meng Yuena; Li Lin; Yao Zehan; Liu Zhe; Wang Kai; Wei Zhixiang; Gu Changzhi; Li Junjie;
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作者单位

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China;

Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;

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正文语种 eng
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关键词
Few-layer Graphene; Metalized Si-nanocone arrays; 3D electrodes; Solid-state supercapacitors; Superior rate capability; Large areal capacitance;

机译：几层石墨烯;金属化硅纳米管阵列;3D电极;固态超级电容器;超高倍率能力;大面积电容;

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1. Towards high areal capacitance, rate capability, and tailorable supercapacitors: Co3O4@polypyrrole core–shell nanorod bundle array electrodes [J] . Longtao Ma, Huiqing Fan, Xinying Wei, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2018,第39期

机译：朝向高面积电容，速率能力和可定制的超级电容器：CO3O4 @聚吡咯核 - 壳纳米棒束阵列电极
2. Combination of 1D Ni(OH)_2 nanobelts and 2D graphene sheets to fabricate 3D composite hydrogel electrodes with ultrahigh capacitance and superior rate capability [J] . He Chengen, Qiu Shengqiang, Peng Haiyan, Composites Science and Technology . 2018,第OCTa20期

机译：一维Ni（OH）_2纳米带和二维石墨烯片的组合，以制造具有超高电容和优异倍率能力的3D复合水凝胶电极
3. First-principles calculation of quantum capacitance of metals doped graphenes and nitrogen/metals co-doped graphenes: designing strategies for supercapacitor electrodes [J] . Wang Min, Chen Liangliang, Zhou Jiangqi, Journal of Materials Science . 2019,第1期

机译：金属掺杂石墨和氮/金属的量子电容计算的第一原理计算：超级电容器电极的设计策略
4. DIRECT CONVERSION OF CO2 TO 3D FLOWER- STRUCTURED GRAPHENE FOR SUPERCAPACITORS WITH ULTRAHIGH AREAL CAPACITANCE [C] . Liang Chang, Wei Wei, Kai Sun ACS National Meeting Exhibition . 2015

机译：具有超高速电容的超级电容器的二氧化碳直接转换CO2至3D花卉结构石墨烯
5. Nanostructured Metal Oxide/Sulfide-Graphene Composite Electrodes for High Performance Li Ion Batteries and Supercapacitors. [D] . Kamali Heidari, Elham. 2016

机译：用于高性能锂离子电池和超级电容器的纳米结构金属氧化物/硫化物-石墨烯复合电极。
6. Retarded saturation of the areal capacitance using 3D-aligned MnO2 thin film nanostructures as a supercapacitor electrode [O] . Green Kim, Ilhwan Ryu, Sanggyu Yim -1

机译：使用3D对齐的MnO2薄膜纳米结构作为超级电容器电极来减小面电容的饱和度
7. Graphene-Based Supercapacitors: Direct Semiconductor Laser Writing of Few-Layer Graphene Polyhedra Networks for Flexible Solid-State Supercapacitor (Adv. Electron. Mater. 7/2018) [O] . Chunlin Liu, Hongwei Liang, Dun Wu, 2018

机译：基于石墨烯的超级电容器：用于柔性固态超级电容器的几层石墨烯多面体网络直接半导体激光书写（ADV。电子。7/2018）

Vertical few-layer graphene/metalized Si-nanocone arrays as 3D electrodes for solid-state supercapacitors with large areal capacitance and superior rate capability

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