In situ sodium chloride template synthesis of cobalt oxide hollow octahedra for lithium-ion batteries

Wang, Fei; Cheng, Danfei; Wang, Wengang; Wang, Yuting; Zhao, Mingshu; Yang, Shengchun; Lu, Xuegang; Song, Xiaoping

doi:10.1039/c4ra15551c

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…To meet out the demand for high energy and power density of electrochemical energy storage devices, the material development plays a dramatic role [13,14]. Comprehensively, various EES devices are available; however, batteries [15][16][17][18] and supercapacitors [19][20][21] are considered as two main classes of EES devices due to their high energy and power densities [12,[22][23][24][25][26]. In the view of safety and life cycle, supercapacitors headed over the batteries [27,28], but they are backward in the energy density [29].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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HIGHLIGHTS• This article reviewed the recent progress on material challenges, charge storage mechanism, and electrochemical performance evaluation of supercapatteries.• Supercapatteries bridge the gap between supercapacitors (low energy density) and batteries (low power density). Fig. 1 a Ragone plot of various electrochemical energy conversion and storage devices [43]. b Schematic illustration of charge storage mechanism of EDL capacitor in porous carbon electrode. c Representation of EDLC structures: Helmholtz model, Gouy-Chapman model and Gouy-Chapman-Stern model. Schematic representation of the charge storage mechanisms in pseudocapacitor; d Intercalation (bulk redox) and e surface redox Nano-Micro Lett.(2020) 12:85Page 5 of 46 85 Table 1 Classification of various energy storage devices according to their charge storage mechanisms NFCS non-Faradaic capacitive storage = EDLC storage, CFS capacitive Faradaic storage = pseudocapacitive storage, NCFS non-capacitive Faradaic storage = battery-type storage Device Supercapattery Battery Supercapacitor Hybrid supercapacitor EDLC Pseudocapacitors

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Section: Introductionmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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Hierarchically Well‐Developed Porous Graphene Nanofibers Comprising N‐Doped Graphitic C‐Coated Cobalt Oxide Hollow Nanospheres As Anodes for High‐Rate Li‐Ion Batteries

Lee

Saroha

et al. 2020

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Hierarchically well‐developed porous graphene nanofibers comprising N‐doped graphitic C (NGC)‐coated cobalt oxide hollow nanospheres are introduced as anodes for high‐rate Li‐ion batteries. For this, three strategies, comprising the Kirkendall effect, metal–organic frameworks, and compositing with highly conductive C, are applied to the 1D architecture. In particular, NGC layers are coated on cobalt oxide hollow nanospheres as a primary transport path of electrons followed by graphene‐nanonetwork‐constituting nanofibers as a continuous and secondary electron transport path. Superior cycling performance is achieved, as the unique nanostructure delivers a discharge capacity of 823 mAh g−1 after 500 cycles at 3.0 A g−1 with a low decay rate of 0.092% per cycle. The rate capability is also noteworthy as the structure exhibits high discharge capacities of 1035, 929, 847, 787, 747, 703, 672, 650, 625, 610, 570, 537, 475, 422, 294, and 222 mAh g−1 at current densities of 0.5, 1.5, 3, 5, 7, 10, 12, 15, 18, 20, 25, 30, 40, 50, 80, and 100 A g−1, respectively. In view of the highly efficient Li+ ion/electron diffusion and high structural stability, the present nanostructuring strategy has a huge potential in opening new frontiers for high‐rate and long‐lived stable energy storage systems.

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Template-directed metal oxides for electrochemical energy storage

Liu

Wang

Chen

2016

Energy Storage Materials

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In situ sodium chloride template synthesis of cobalt oxide hollow octahedra for lithium-ion batteries

Abstract: A novel template synthesis route is developed to synthesize cobalt oxide hollow octahedra.

Cited by 5 publications

References 29 publications

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Hierarchically Well‐Developed Porous Graphene Nanofibers Comprising N‐Doped Graphitic C‐Coated Cobalt Oxide Hollow Nanospheres As Anodes for High‐Rate Li‐Ion Batteries

Template-directed metal oxides for electrochemical energy storage

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