High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox

Chen, Xiaoli; Li, Ning; Kedzie, Elyse; McCloskey, Bryan D.; Tang, Haolin; Tong, Wei

doi:10.1149/2.0611916jes

Title: High-Capacity P2-Type Na_xLi_0.25Mn_0.75O₂ Cathode Enabled by Anionic Oxygen Redox

Abstract

Sodium-ion battery technology has attracted significant attention due to its substantial cost advantage and similar operating mechanism to Li-ion batteries. P2-type sodium manganese oxide cathode is one of the most promising candidates, demonstrating both high capacity and good cycling stability. Here, we explore the lattice oxygen activity in layered sodium transition metal oxides. We synthesize a series of sodium lithium manganese oxides, NaxLi_0.25Mn_0.75O2 (x = 0.75 – 0.833), to optimize Na content. We further investigate the charge compensation mechanism for the best performing Na_0.75Li_0.25Mn_0.75O₂ over an extensive electrochemical cycling window. The large charge and discharge capacity is enabled by reversible lattice oxygen redox in the high voltage region (≥2.5 V), along with Mn redox at the voltages below 2.5 V. Additionally, we reveal a small amount of oxygen gas evolution, 0.04% of the total oxygen in Na_0.25Li_0.25Mn_0.75O₂. This initial study will trigger an interest in the lattice oxygen activity in layered sodium metal oxide cathode, therefore, leading to better understanding of its correlation with crystal structure and electrochemical performance.

Authors:

Chen, Xiaoli ^[1]; Li, Ning ^[2]; Kedzie, Elyse ^[3];

^[4]; Tang, Haolin ^[5];

^[3]

Wuhan Univ. (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of California, Berkeley, CA (United States)
Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Wuhan Univ. (China)

Publication Date:: Thu Jan 02 00:00:00 EST 2020

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1760177

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Journal of the Electrochemical Society (Online)

Additional Journal Information:: Journal Name: Journal of the Electrochemical Society (Online); Journal Volume: 166; Journal Issue: 16; Journal ID: ISSN 1945-7111

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE

Citation Formats


                    Chen, Xiaoli, Li, Ning, Kedzie, Elyse, McCloskey, Bryan D., Tang, Haolin, and Tong, Wei. High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox.  United States: N. p., 2020. 
Web.  doi:10.1149/2.0611916jes.

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                    Chen, Xiaoli, Li, Ning, Kedzie, Elyse, McCloskey, Bryan D., Tang, Haolin, & Tong, Wei. High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox.  United States.  https://doi.org/10.1149/2.0611916jes

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                    Chen, Xiaoli, Li, Ning, Kedzie, Elyse, McCloskey, Bryan D., Tang, Haolin, and Tong, Wei. Thu .  
"High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox".  United States.  https://doi.org/10.1149/2.0611916jes.  https://www.osti.gov/servlets/purl/1760177.

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@article{osti_1760177,

  title        = {High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox},

  author       = {Chen, Xiaoli and Li, Ning and Kedzie, Elyse and McCloskey, Bryan D. and Tang, Haolin and Tong, Wei},

  abstractNote = {Sodium-ion battery technology has attracted significant attention due to its substantial cost advantage and similar operating mechanism to Li-ion batteries. P2-type sodium manganese oxide cathode is one of the most promising candidates, demonstrating both high capacity and good cycling stability. Here, we explore the lattice oxygen activity in layered sodium transition metal oxides. We synthesize a series of sodium lithium manganese oxides, NaxLi0.25Mn0.75O2 (x = 0.75 – 0.833), to optimize Na content. We further investigate the charge compensation mechanism for the best performing Na0.75Li0.25Mn0.75O2 over an extensive electrochemical cycling window. The large charge and discharge capacity is enabled by reversible lattice oxygen redox in the high voltage region (≥2.5 V), along with Mn redox at the voltages below 2.5 V. Additionally, we reveal a small amount of oxygen gas evolution, 0.04% of the total oxygen in Na0.25Li0.25Mn0.75O2. This initial study will trigger an interest in the lattice oxygen activity in layered sodium metal oxide cathode, therefore, leading to better understanding of its correlation with crystal structure and electrochemical performance.},

  doi          = {10.1149/2.0611916jes},

  journal      = {Journal of the Electrochemical Society (Online)},

  number       = 16,

  volume       = 166,

  place        = {United States},

  year         = {Thu Jan 02 00:00:00 EST 2020},

  month        = {Thu Jan 02 00:00:00 EST 2020}

}

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Title: High-Capacity P2-Type NaxLi0.25Mn0.75O2 Cathode Enabled by Anionic Oxygen Redox

Abstract

Citation Formats

Sodium and Sodium-Ion Batteries: 50 Years of Research journal, February 2018

Investigation of the Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li 1 - x Co 1/3 Ni 1/3 Mn 1/3 O 2 Electrode System by Combination of Soft and Hard X-ray Absorption Spectroscopy journal, December 2005

A high-capacity P2 Na2/3Ni1/3Mn2/3O2 cathode material for sodium ion batteries with oxygen activity journal, August 2018

Charge Heterogeneity and Surface Chemistry in Polycrystalline Cathode Materials journal, March 2018

Electrochemistry and Solid‐State Chemistry of NaMeO 2 (Me = 3d Transition Metals) journal, June 2018

Review—Manganese-Based P2-Type Transition Metal Oxides as Sodium-Ion Battery Cathode Materials journal, January 2015

Charge-compensation in 3d-transition-metal-oxide intercalation cathodes through the generation of localized electron holes on oxygen journal, March 2016

Soft X-Ray Irradiation Effects of Li2O2, Li2CO3 and Li2O Revealed by Absorption Spectroscopy journal, November 2012

Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium-ion batteries journal, March 2014

Anionic Redox Reaction-Induced High-Capacity and Low-Strain Cathode with Suppressed Phase Transition journal, February 2019

Synthesis and electrochemistry of Li3MnO4: Mn in the +5 oxidation state journal, October 2007

Lithium-Doping Stabilized High-Performance P2–Na 0.66 Li 0.18 Fe 0.12 Mn 0.7 O 2 Cathode for Sodium Ion Batteries journal, April 2019

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Sodium and Manganese Stoichiometry of P2-Type Na 2/3 MnO 2 journal, September 2016

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Elucidating anionic oxygen activity in lithium-rich layered oxides journal, March 2018

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Sodium-ion diffusion and ordering in single-crystal P 2 -Na x CoO 2 journal, August 2008

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Title: High-Capacity P2-Type Na_xLi_0.25Mn_0.75O₂ Cathode Enabled by Anionic Oxygen Redox

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journal, December 2005

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journal, June 2018

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journal, January 2015

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journal, March 2016

Soft X-Ray Irradiation Effects of Li2O2, Li2CO3 and Li2O Revealed by Absorption Spectroscopy
journal, November 2012

Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium-ion batteries
journal, March 2014

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journal, February 2019

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journal, September 2016

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journal, September 2017

Elucidating anionic oxygen activity in lithium-rich layered oxides
journal, March 2018

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journal, January 2019

Toward high energy density cathode materials for sodium-ion batteries: investigating the beneficial effect of aluminum doping on the P2-type structure
journal, January 2017

Residual Lithium Carbonate Predominantly Accounts for First Cycle CO ₂ and CO Outgassing of Li-Stoichiometric and Li-Rich Layered Transition-Metal Oxides
journal, November 2017

Sodium-ion batteries: present and future
journal, January 2017

Sodium metal anodes for room-temperature sodium-ion batteries: Applications, challenges and solutions
journal, January 2019

A review of Ni-based layered oxides for rechargeable Li-ion batteries
journal, January 2017

Oxygen Release and Its Effect on the Cycling Stability of LiNi _x Mn _y Co _z O ₂ (NMC) Cathode Materials for Li-Ion Batteries
journal, January 2017

Electrode Materials for Rechargeable Sodium-Ion Batteries: Potential Alternatives to Current Lithium-Ion Batteries
journal, May 2012

Sodium-ion diffusion and ordering in single-crystal $P 2 {-Na}_{x} {CoO}_{2}$
journal, August 2008

Structure of the high voltage phase of layered P2-Na _2/3−z [Mn _1/2 Fe _1/2 ]O ₂ and the positive effect of Ni substitution on its stability
journal, January 2015

Research Development on Sodium-Ion Batteries
journal, October 2014

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