Framework Doping of Ni Enhances Pseudocapacitive Na-Ion Storage of (Ni)MnO2 Layered Birnessite

Xiaoqiang Shan; Fenghua Guo; Katharine Page; Joerg C. Neuefeind; Bruce Ravel; A. M.Milinda Abeykoon; Gihan Kwon; Daniel Olds; Dong Su; Xiaowei Teng

doi:10.1021/acs.chemmater.9b02568

Framework Doping of Ni Enhances Pseudocapacitive Na-Ion Storage of (Ni)MnO₂ Layered Birnessite

Xiaoqiang Shan, Fenghua Guo, Katharine Page, Joerg C. Neuefeind, Bruce Ravel, A. M.Milinda Abeykoon, Gihan Kwon, Daniel Olds, Dong Su, Xiaowei Teng

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Abstract

We report a (Ni)MnO₂ layered birnessite material with a framwork doping of Ni ions as the cathode for much enhanced aqueous Na-ion storage. Characterized by neutron total scattering and pair distribution function (PDF) analysis, in situ XRD, in situ X-ray PDF, XANES, and XPS, the synergistic interaction between disordered [NiO₆] and ordered [MnO₆] octahedra contribute to the enhanced specific capacity and cycle life (63 mAh g^-1 at 0.2 A g^-1 after 2000 full-cell cycles). Electro-kinetic analysis and structural characterizations show that stable local structure is maintained by [MO₆] octahedra during charge-discharge processes, while disordered [NiO₆] octahedra significantly improve pseudocapacitive redox charge storage. This finding may pave a new way for designing a new type of low-cost and high performance layered electrode materials.

Original language	English
Pages (from-to)	8774-8786
Number of pages	13
Journal	Chemistry of Materials
DOIs	https://doi.org/10.1021/acs.chemmater.9b02568
State	Published - 2019

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Copyright © 2019 American Chemical Society.

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title = "Framework Doping of Ni Enhances Pseudocapacitive Na-Ion Storage of (Ni)MnO2 Layered Birnessite",

abstract = "We report a (Ni)MnO2 layered birnessite material with a framwork doping of Ni ions as the cathode for much enhanced aqueous Na-ion storage. Characterized by neutron total scattering and pair distribution function (PDF) analysis, in situ XRD, in situ X-ray PDF, XANES, and XPS, the synergistic interaction between disordered [NiO6] and ordered [MnO6] octahedra contribute to the enhanced specific capacity and cycle life (63 mAh g-1 at 0.2 A g-1 after 2000 full-cell cycles). Electro-kinetic analysis and structural characterizations show that stable local structure is maintained by [MO6] octahedra during charge-discharge processes, while disordered [NiO6] octahedra significantly improve pseudocapacitive redox charge storage. This finding may pave a new way for designing a new type of low-cost and high performance layered electrode materials.",

author = "Xiaoqiang Shan and Fenghua Guo and Katharine Page and Neuefeind, {Joerg C.} and Bruce Ravel and Abeykoon, {A. M.Milinda} and Gihan Kwon and Daniel Olds and Dong Su and Xiaowei Teng",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2019",

doi = "10.1021/acs.chemmater.9b02568",

language = "English",

pages = "8774--8786",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Framework Doping of Ni Enhances Pseudocapacitive Na-Ion Storage of (Ni)MnO2 Layered Birnessite

AU - Shan, Xiaoqiang

AU - Guo, Fenghua

AU - Page, Katharine

AU - Neuefeind, Joerg C.

AU - Ravel, Bruce

AU - Abeykoon, A. M.Milinda

AU - Kwon, Gihan

AU - Olds, Daniel

AU - Su, Dong

AU - Teng, Xiaowei

PY - 2019

Y1 - 2019

N2 - We report a (Ni)MnO2 layered birnessite material with a framwork doping of Ni ions as the cathode for much enhanced aqueous Na-ion storage. Characterized by neutron total scattering and pair distribution function (PDF) analysis, in situ XRD, in situ X-ray PDF, XANES, and XPS, the synergistic interaction between disordered [NiO6] and ordered [MnO6] octahedra contribute to the enhanced specific capacity and cycle life (63 mAh g-1 at 0.2 A g-1 after 2000 full-cell cycles). Electro-kinetic analysis and structural characterizations show that stable local structure is maintained by [MO6] octahedra during charge-discharge processes, while disordered [NiO6] octahedra significantly improve pseudocapacitive redox charge storage. This finding may pave a new way for designing a new type of low-cost and high performance layered electrode materials.

AB - We report a (Ni)MnO2 layered birnessite material with a framwork doping of Ni ions as the cathode for much enhanced aqueous Na-ion storage. Characterized by neutron total scattering and pair distribution function (PDF) analysis, in situ XRD, in situ X-ray PDF, XANES, and XPS, the synergistic interaction between disordered [NiO6] and ordered [MnO6] octahedra contribute to the enhanced specific capacity and cycle life (63 mAh g-1 at 0.2 A g-1 after 2000 full-cell cycles). Electro-kinetic analysis and structural characterizations show that stable local structure is maintained by [MO6] octahedra during charge-discharge processes, while disordered [NiO6] octahedra significantly improve pseudocapacitive redox charge storage. This finding may pave a new way for designing a new type of low-cost and high performance layered electrode materials.

UR - http://www.scopus.com/inward/record.url?scp=85074268632&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.9b02568

DO - 10.1021/acs.chemmater.9b02568

M3 - Article

AN - SCOPUS:85074268632

SN - 0897-4756

SP - 8774

EP - 8786

JO - Chemistry of Materials

JF - Chemistry of Materials

ER -

Framework Doping of Ni Enhances Pseudocapacitive Na-Ion Storage of (Ni)MnO₂ Layered Birnessite

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