Alluaudite LiMnPO4: A new Mn-based positive electrode for Li rechargeable batteries

Jongsoon Kim; Hyungsub Kim; Kyu Young Park; Young Uk Park; Seongsu Lee; Hyung Soon Kwon; Han Ill Yoo; Kisuk Kang

doi:10.1039/c4ta00955j

Alluaudite LiMnPO₄: A new Mn-based positive electrode for Li rechargeable batteries

Jongsoon Kim
, Hyungsub Kim
, Kyu Young Park
, Young Uk Park
, Seongsu Lee
, Hyung Soon Kwon
, Han Ill Yoo
, Kisuk Kang

Seoul National University
Korea Atomic Energy Research Institute

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

A novel, Na-pillared LiMnPO₄ (Li_0.78Na _0.22MnPO₄) with an alluaudite structure is successfully prepared for the first time and proposed as a new positive electrode for Li rechargeable batteries. Approximately 0.8 Li⁺ ions are reversibly extracted from and reinserted into LiMnPO₄via Mn²⁺/Mn ³⁺ redox reactions. The alluaudite LiMnPO₄ (a-LiMnPO ₄) structure is sufficiently robust during repeated Li extraction/insertion such that ∼92% of the initial capacity is retained after 50 charge/discharge cycles. An ex situ XRD study of the electrochemical cell during cycling indicates that Li de/intercalation in alluaudite LiMnPO ₄ occurs via the one-phase (solid-solution) reaction instead of the two-phase reaction observed in olivine LiMnPO₄. This journal is

Original language	English
Pages (from-to)	8632-8636
Number of pages	5
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	23
DOIs	https://doi.org/10.1039/c4ta00955j
State	Published - 21 Jun 2014
Externally published	Yes

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SDG 7 Affordable and Clean Energy

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10.1039/c4ta00955j

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title = "Alluaudite LiMnPO4: A new Mn-based positive electrode for Li rechargeable batteries",

abstract = "A novel, Na-pillared LiMnPO4 (Li0.78Na 0.22MnPO4) with an alluaudite structure is successfully prepared for the first time and proposed as a new positive electrode for Li rechargeable batteries. Approximately 0.8 Li+ ions are reversibly extracted from and reinserted into LiMnPO4via Mn2+/Mn 3+ redox reactions. The alluaudite LiMnPO4 (a-LiMnPO 4) structure is sufficiently robust during repeated Li extraction/insertion such that ∼92\% of the initial capacity is retained after 50 charge/discharge cycles. An ex situ XRD study of the electrochemical cell during cycling indicates that Li de/intercalation in alluaudite LiMnPO 4 occurs via the one-phase (solid-solution) reaction instead of the two-phase reaction observed in olivine LiMnPO4. This journal is",

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month = jun,

day = "21",

doi = "10.1039/c4ta00955j",

language = "English",

volume = "2",

pages = "8632--8636",

journal = "Journal of Materials Chemistry A",

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T1 - Alluaudite LiMnPO4

T2 - A new Mn-based positive electrode for Li rechargeable batteries

AU - Kim, Jongsoon

AU - Kim, Hyungsub

AU - Park, Kyu Young

AU - Park, Young Uk

AU - Lee, Seongsu

AU - Kwon, Hyung Soon

AU - Yoo, Han Ill

AU - Kang, Kisuk

PY - 2014/6/21

Y1 - 2014/6/21

N2 - A novel, Na-pillared LiMnPO4 (Li0.78Na 0.22MnPO4) with an alluaudite structure is successfully prepared for the first time and proposed as a new positive electrode for Li rechargeable batteries. Approximately 0.8 Li+ ions are reversibly extracted from and reinserted into LiMnPO4via Mn2+/Mn 3+ redox reactions. The alluaudite LiMnPO4 (a-LiMnPO 4) structure is sufficiently robust during repeated Li extraction/insertion such that ∼92% of the initial capacity is retained after 50 charge/discharge cycles. An ex situ XRD study of the electrochemical cell during cycling indicates that Li de/intercalation in alluaudite LiMnPO 4 occurs via the one-phase (solid-solution) reaction instead of the two-phase reaction observed in olivine LiMnPO4. This journal is

AB - A novel, Na-pillared LiMnPO4 (Li0.78Na 0.22MnPO4) with an alluaudite structure is successfully prepared for the first time and proposed as a new positive electrode for Li rechargeable batteries. Approximately 0.8 Li+ ions are reversibly extracted from and reinserted into LiMnPO4via Mn2+/Mn 3+ redox reactions. The alluaudite LiMnPO4 (a-LiMnPO 4) structure is sufficiently robust during repeated Li extraction/insertion such that ∼92% of the initial capacity is retained after 50 charge/discharge cycles. An ex situ XRD study of the electrochemical cell during cycling indicates that Li de/intercalation in alluaudite LiMnPO 4 occurs via the one-phase (solid-solution) reaction instead of the two-phase reaction observed in olivine LiMnPO4. This journal is

UR - https://www.scopus.com/pages/publications/84901282311

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DO - 10.1039/c4ta00955j

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JO - Journal of Materials Chemistry A

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ER -

Alluaudite LiMnPO₄: A new Mn-based positive electrode for Li rechargeable batteries

Abstract

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