biostudies-literatureWei CQingdao University of Science and TechnologyAnyang Normal UniversityHenan University of Science and Technology15258-15263https://www.ebi.ac.uk/biostudies/studies/S-EPMC8698241biostudies-literatureUnknown11(25)In this study, hierarchical Ni-Co-Mn hydroxide hollow architectures were successfully achieved <i>via</i> an etching process. We first performed the synthesis of NiCoMn-glycerate solid spheres <i>via</i> a solvothermal route, and then NiCoMn-glycerate as the template was etched to convert into hierarchical Ni-Co-Mn hydroxide hollow architectures in the mixed solvents of water and 1-methyl-2-pyrrolidone. Hollow architectures and high surface area enabled Ni-Co-Mn hydroxide to manifest a specific capacitance of 1626 F g^-1 at 3.0 A g^-1, and it remained as large as 1380 F g^-1 even at 3.0 A g^-1. The Ni-Co-Mn hydroxide electrodes also displayed notable cycle performance with a decline of 1.6% over 5000 cycles at 12 A g^-1. Moreover, an asymmeRSC advancesHierarchical Ni-Co-Mn hydroxide hollow architectures as high-performance electrodes for electrochemical energy storage.PMC8698241QUSTHX201924162300410003AYNUKP-2018-B17Cheng CLi XWei CXiao HYao QWang KfalseHierarchical Ni-Co-Mn hydroxide hollow architectures as high-performance electrodes for electrochemical energy storage.In this study, hierarchical Ni-Co-Mn hydroxide hollow architectures were successfully achieved <i>via</i> an etching process. We first performed the synthesis of NiCoMn-glycerate solid spheres <i>via</i> a solvothermal route, and then NiCoMn-glycerate as the template was etched to convert into hierarchical Ni-Co-Mn hydroxide hollow architectures in the mixed solvents of water and 1-methyl-2-pyrrolidone. Hollow architectures and high surface area enabled Ni-Co-Mn hydroxide to manifest a specific capacitance of 1626 F g^-1 at 3.0 A g^-1, and it remained as large as 1380 F g^-1 even at 3.0 A g^-1. The Ni-Co-Mn hydroxide electrodes also displayed notable cycle performance with a decline of 1.6% over 5000 cycles at 12 A g^-1. Moreover, an asymme2021-01-01T00:00:00Z2021 Apr2025-04-22T09:17:20.32Z2025-04-05T22:58:12.378ZS-EPMC86982413542402010.1039/d0ra10377b