Article
Chemistry, Multidisciplinary
Jun Zhou, Yuying Zheng, Dongyang Chen
Summary: By using a reduction-reaction-induced self-assembly process, a new type of three-dimensional porous aerogel with partially unzipped multiwalled carbon nanotubes inserted into graphene nanosheets was prepared. The aerogels exhibited excellent electrical contact, prevented restacking of graphene nanosheets, and provided large channels for charge transfer, resulting in promising electrode materials for supercapacitor applications.
Article
Energy & Fuels
Guojie Chao, Dong Wang, Yang Wang, Xu Zhang, Suli Chen, Yufeng Wang, Wei Zong, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: In this study, a scalable method for the preparation of Co-doped graphene/carbon hybrid aerogel with hierarchically porous structure was reported. The CGCA samples demonstrated improved electrical conductivity, enhanced capacitance storage capacity, and good cyclic stability. The supercapacitor assembled with CGCA electrodes showed high specific capacitance and could provide a high energy density at a power density.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Biochemistry & Molecular Biology
Xiuya Wang, Ke Wan, Pengbo Xie, Yuanyuan Miao, Zhenbo Liu
Summary: The study prepared graphene-cellulose hydrogels by a one-step hydrothermal method, followed by the preparation of porous, ultra-light, and mechanically strong graphene-cellulose aerogels through freeze-drying. These composite aerogels exhibit excellent mechanical strength and high specific capacitance, capable of bearing about 1095 times the pressure of their own weight.
Article
Chemistry, Physical
Soon Poh Lee, Gomaa A. M. Ali, Mohammed A. Assiri, Kien Voon Kong, Ellie Yi Lih Teo, Kwok Feng Chong
Summary: This study demonstrates the reduction and functionalization of graphene oxide (GO) into phenothiazine (PTZ)-reduced graphene oxide (PTZ-rGO) aerogel. PTZ is excited by UV light to reduce GO through electron transfer, while being oxidized and functionalized onto rGO simultaneously to form PTZ-rGO aerogel. The incorporation of PTZ onto rGO sheets improves the electrochemical active surface area and diffusion behavior, leading to a high charge storage capacity of 235.5 F g-1 at 0.5 A g-1 and a stable capacitance retention of 92% after 10,000 cycles. This makes PTZ-rGO an excellent electrode material for supercapacitor fabrication.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Ting Xu, Yaxuan Wang, Kun Liu, Qingshuang Zhao, Qidi Liang, Meng Zhang, Chuanling Si
Summary: An ultralight and robust MXene/carbon nanotube aerogel with abundant pore structures, superior conductivity, and good mechanical properties is constructed. The all-solid-state supercapacitor with MXene/carbon nanotube aerogel exhibits outstanding electrochemical performance, and the flexible device can be bent from 0 to 90 degrees.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yaqi Wang, Junwei Yang, Yiheng Song, Quanling Yang, Chuanxi Xiong, Zhuqun Shi
Summary: In this study, bio-based cellulose nanofibers and graphene were used to fabricate 3D carbon aerogels with excellent conductivity. The carbonized aerogels showed a specific capacitance of 134.09 F/g at a current density of 0.5 A/g and retained 98.89% capacitance after 5000 cycles. When the temperature increased to 1100 degrees C, the electrochemical performance of the carbonized cellulose nanofiber aerogel significantly improved, with a specific capacitance of 361.74 F/g and a capacitance retention of 99.3% after 5000 cycles. These bio-based cellulose nanofibers hold great promise in the field of supercapacitors.
DIAMOND AND RELATED MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Jasmin S. Shaikh, Navajsharif S. Shaikh, Yogendra Kumar Mishra, S. S. Pawar, Nazish Parveen, Poonam M. Shewale, Sandip Sabale, Pongsakorn Kanjanaboos, Supareak Praserthdam, Chandrakant D. Lokhande
Summary: Graphene and graphene-based hybrid materials are excellent supercapacitor electrode materials due to their high surface area, electrical conductivity, and cycling stabilities. Aerogels, with their lightweight, high porosity and specific surface area, are pragmatic choices for supercapacitors. By combining graphene aerogels with pseudocapacitive materials, an efficient energy and power density performance can be achieved.
Article
Nanoscience & Nanotechnology
Huayu Liu, Ting Xu, Qidi Liang, Qingshuang Zhao, Dawei Zhao, Chuanling Si
Summary: In this study, a nanocellulose-based carbon aerogel with excellent compressibility and elasticity was proposed for high-performance flexible supercapacitors. By using cellulose nanofibrils and reduced graphene oxide, the assembled supercapacitors exhibited good cycle stability and excellent electrochemical properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Engineering, Environmental
Li Sun, Xiao Su, Yujuan Chen, Kelei Zhuo, Huanhuan Li, Dong Sun, Jianji Wang
Summary: In this work, a unique MXene/TiO2-graphene aerogel composite with a 3D hierarchical porous framework was developed, assisted by ferric ions. The composite exhibited a large specific surface area and amorphous TiO2 on the surface of MXene nanosheets. The amorphous TiO2 contributed to pseudocapacitance through reversible redox reactions with lithium ions, and the variable valence states of ferric cations also provided pseudocapacitance. The study also formulated a trinary ionic liquid-based electrolyte with a wide electrochemical stability potential window to match the new material.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Yunjie Ping, Shiju Yang, Jinzhao Han, Xu Li, Haoliang Zhang, Bangyun Xiong, Pengfei Fang, Chunqing He
Summary: N-self-doped graphitic carbon aerogels (NGCA) with hierarchically porous tunnels, high graphitization degree, high N content, and 3D conductive network structure were successfully prepared by dry-freezing and successive high temperature treatment of ZIF8/carboxymethylcellulose (CMC)/potassium ferrate (K2FeO4) composites. When used in a supercapacitor, NGCA showed excellent capacitive performance and remarkable energy-power characteristics, confirming its potential as a high-performance electrode material.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Wenchao Bi, Shengyuan Deng, Haisha Tang, Yuan Liu, Jun Shen, Guohua Gao, Guangming Wu, M. Atif, M. S. AlSalhi, Guozhong Gao
Summary: V4+-V2O5/CA composites synthesized through in-situ hydrolysis-condensation process exhibit excellent performance in supercapacitors, with high specific capacitance, energy density and cycle life.
SCIENCE CHINA-MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jannatul Dil Afroze, Liyong Tong, Md Jaynul Abden, Yuan Chen
Summary: Graphene oxide nanosheets can be assembled into multifunctional graphene aerogels by hybridizing with functionalized carbon fibers, resulting in high-performance hybrid carbon aerogels for sensing and energy storage applications. These aerogels exhibit excellent properties such as high compressive strength, electrical conductivity, and strain-responsive electrical response sensitivity, making them suitable for flexible electronics and energy storage devices.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Physical
Mahrokh Nazari, Mohammad S. Rahmanifar, Abolhassan Noori, Weijun Li, Cheng Zhang, Mir F. Mousavi
Summary: Mesoporous carbon nitrides compositing with graphene aerogel exhibit exceptional supercapacitive performance due to their highly conductive metal-free nanocomposite structure. The specific capacitance of the tailored electrode is significantly higher compared to pristine carbon nitride and graphene aerogel electrodes. This nanocomposite shows excellent long-term stability, high specific energy, and outstanding specific power, indicating its potential for future energy storage applications and related technologies.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Xiuya Wang, Pengbo Xie, Lan He, Yuwei Liang, Liang Zhang, Yuanyuan Miao, Zhenbo Liu
Summary: Graphene-cellulose-polyethyleneimine aerogels were prepared to remove anionic and cationic dyes in water. These aerogels had good compression resistance and satisfactory adsorption capacity for amaranth and methylene blue, making them suitable for use as adsorbents in different environments to remove dye pollutants and maintain ecological balance.
Article
Materials Science, Composites
Karamat Subhani, Xing Jin, Peter J. Mahon, Alan Kin Tak Lau, Nisa Salim
Summary: This study reported the design of a structural supercapacitor using a continuous network of graphene aerogel impregnated on carbon fiber fabrics. The modification of carbon fibers with graphene aerogel significantly improved the capacitance, providing a practical method for lightweight energy storage applications.
COMPOSITES COMMUNICATIONS
(2021)