Holey graphene/polypyrrole nanoparticle hybrid aerogels with three-dimensional hierarchical porous structure for high performance supercapacitor Original Research Article Journal of Power Sources, Volume 317, 15 June 2016, Pages 10-18 Yibo He, Yonglong Bai, Xiaofan Yang, Jinyang Zhang, Liping Kang, Hua Xu, Feng Shi, Zhibin Lei, Zong-Huai Liu
Graphical abstractA facile preparation method is developed for holey graphene/polypyrrole hybrid aerogels with 3D hierarchical porous structure, which is beneficial for shortening the diffusion length of electrolyte ions during the charge-discharge process and providing multiplexed conduction pathways with large specific surface area to ensure rapid charge transfer and transport. The obtained hybrid aerogel with a mass ratio of PPy/HGO = 0.75 exhibits high specific capacitance, extremely outstanding rate capability and good cycling performance.
 | Reduced graphene oxide anchored with MnO2 nanorods as anode for high rate and long cycle Lithium ion batteries Original Research Article Electrochimica Acta, Available online 1 April 2016, Pages Zhaofei Ma, Tianbo Zhao
Graphical abstract

A process involves two steps: modification of the surface of the MnO2 nanorods with APTES and hydrothermal reaction of the MnO2 nanorods/GO composites to fabricate of the MnO2/graphene composites. Due to the intimate contact with graphene, the MnO2/graphene composites exhibit a superior cycling performance and lithium-storage capacity. Under the current density of 0.5 A g−1, the MnO2/rGO composites electrode could deliver reversible capacities as high as 600.3 mAh g−1 after more than 650 cycles. | |
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