Hierarchical Si hydrogel architecture with conductive polyaniline channels on sulfonated-graphene for high-performance Li ion battery anodes having a robust cycle life

Oh, Hyeong Sub; Jeong, Hyung Mo; Park, Jung Hyo; Ock, Ilwoo; Kang, Jeung Ku

doi:10.1039/c5ta01825k

Cited by 21 publications

(11 citation statements)

References 33 publications

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“…Superfluous phosphoric acid on the Si surface protonated the nitrogen groupso nP ANI, leading to as trong adhesive force with the Si particles and forminga3D continuous conductive network. Oh et al [37] chose phytic acid as dopant and a3 Ds oft template. They fabricatedaSi hydrogel with hierarchical architecture with conducting PANI channels connected with sulfonated-graphene NSs (SGNs) through polymerization of aniline in solutionsc ontaining Si NPs and SGNs.…”

Section: Other Functionalitiesmentioning

confidence: 99%

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Application of Polyaniline for Li‐Ion Batteries, Lithium–Sulfur Batteries, and Supercapacitors

et al. 2019

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Conducting polyaniline (PANI) exhibits interesting properties, such as high conductivity, reversible convertibility between redox states, and advantageous structural feature. It therefore receives ever‐increasing attention for various applications. This Minireview evaluates recent studies on application of PANI for Li‐ion batteries (LIBs), Li–S batteries (LSBs) and supercapacitors (SCPs). The flexible PANI is crucial for cyclability, especially for buffering the volumetric changes of electrode materials, in addition to enhancing the electron/ion transport. Furthermore, PANI can be directly used as an electroactive component in electrode materials for LIBs or SCPs and can be widely applied in LSBs due to its physically and chemically strong affinity for S and polysulfides. The evaluation of studies herein reveals significant improvements of electrochemical performance by physical/chemical modification and incorporation of PANI.

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Section: Other Functionalitiesmentioning

confidence: 99%

“…Reproducedw ith permission from Ref. [37].Copyright 2000,Elsevier. ChemSusChem 2019ChemSusChem , 12,1591ChemSusChem -1611 www.chemsuschem.org 2019 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim diffusion/dissolution into the electrolyte.…”

Section: Cathodementioning

confidence: 99%

Application of Polyaniline for Li‐Ion Batteries, Lithium–Sulfur Batteries, and Supercapacitors

et al. 2019

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“…Advanced energy storage systems are urgent demand to satisfy requirements of fast‐growing electrical vehicle applications . Among various electrochemical energy storage systems, supercapacitors (SCs) and lithium‐ion batteries (LIBs) are currently recognized as the two promising systems .…”

Section: Physical Properties Of Eacsmentioning

confidence: 99%

Activated Carbon from Biomass Transfer for High‐Energy Density Lithium‐Ion Supercapacitors

Dai

Xiao

et al. 2016

Advanced Energy Materials

234

127

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“…Supercapacitors with superfast charge/discharge capabilities, high power density,a nd long cycle life show great potentials in portable electronic devices, electric vehicles, and many other energy fields. [1][2][3] In the past decade, flexible supercapacitors have been evolvedr apidly by developing fundamental enabling technologies, exploring applicable devices,a nd opening up new application opportunities. [4,5] Amongt he various electrodes, flexible and porous electrodes not only provide an interconnected network as electron and ion pathways for efficient chargea nd mass exchange during faradic redox reactions, but also allow more electroactive sites to be exposed to the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

Yang³

et al. 2019

Chemistry A European J

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To endow all‐solid‐state asymmetric supercapacitors with high energy density, cycling stability, and flexibility, we design a binder‐free supercapacitor electrode by in situ growth of well‐distributed broccoli‐like Ni0.75Mn0.25O/C solid solution arrays on a flexible and three‐dimensional Ni current collector (3D‐Ni). The electrode consists of a bottom layer of compressed but still porous Ni foam with excellent flexibility and high electrical conductivity, an intermediate layer of interconnected Ni nanoparticles providing a large specific surface area for loading of active substances, and a top layer of vertically aligned mesoporous nanosheets of a Ni0.75Mn0.25O/C solid solution. The resultant 3D‐Ni/Ni0.75Mn0.25O/C cathode exhibits a specific capacitance of 1657.6 mF cm−2 at 1 mA cm−2 and shows no degradation of the capacitance after 10 000 cycles at 3 mA cm−2. The assembled 3D‐Ni/Ni0.75Mn0.25O/C//activated carbon asymmetric supercapacitor has a high specific capacitance of 797.7 mF cm−2 at 2 mA cm−2 and an excellent cycling stability with 85.3 % of capacitance retention after 10 000 cycles at a current density of 3 mA cm−2. The energy density and power density of the asymmetric supercapacitor are up to 6.6 mW h cm−3 and 40.8 mW cm−3, respectively, indicating a fairly promising future of the flexible 3D‐Ni/Ni0.75Mn0.25O/C electrode for efficient energy storage applications.

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Hierarchical Si hydrogel architecture with conductive polyaniline channels on sulfonated-graphene for high-performance Li ion battery anodes having a robust cycle life

Abstract: A hierarchical Si hydrogel architecture with conductive polyaniline channels on sulfonated-graphene gives high capacity, in addition to excellent capacity retention and robust cycle life.

Cited by 21 publications

References 33 publications

Application of Polyaniline for Li‐Ion Batteries, Lithium–Sulfur Batteries, and Supercapacitors

Application of Polyaniline for Li‐Ion Batteries, Lithium–Sulfur Batteries, and Supercapacitors

Activated Carbon from Biomass Transfer for High‐Energy Density Lithium‐Ion Supercapacitors

In Situ Growth of Hierarchical Ni‐Mn‐O Solid Solution on a Flexible and Porous Ni Electrode for High‐Performance All‐Solid‐State Asymmetric Supercapacitors

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