Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials

Steiner, James D.; Cheng, Hao; Walsh, Julia; Zhang, Yan; Zydlewski, Benjamin; Mu, Linqin; Xu, Zhengrui; Rahman, Muhammad Mominur; Sun, Huabin; Michel, F. Marc; Sun, Cheng-Jun; Nordlund, Dennis; Luo, Wei; Zheng, Jin-Cheng; Xin, Huolin L.; Lin, Feng

doi:10.1021/acsami.9b14729

Title: Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials

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Abstract

Elemental doping represents a prominent strategy to improve interfacial chemistry in battery materials. Manipulating the dopant spatial distribution and understanding the dynamic evolution of the dopants at the atomic scale can inform better design of the doping chemistry for batteries. Herein, we create a targeted hierarchical distribution of Ti⁴⁺, a popular doping element for oxide cathode materials, in LiNi_0.8Mn_0.1Co_0.1O₂ primary particles. We apply multiscale synchrotron/electron spectroscopy and imaging techniques as well as theoretical calculations to investigate the dynamic evolution of the doping chemical environment. The Ti⁴⁺ dopant is fully incorporated into the TMO6 octahedral coordination and is targeted to be enriched at the surface. Ti⁴⁺ in the TMO₆ octahedral coordination increases the TM–O bond length and reduces the covalency between (Ni, Mn, Co) and O. The excellent reversibility of Ti⁴⁺ chemical environment gives rise to superior oxygen reversibility at the cathode–electrolyte interphase and in the bulk particles, leading to improved stability in capacity, energy, and voltage. Our work directly probes the chemical environment of doping elements and helps rationalize the doping strategy for high-voltage layered cathodes.

Authors:

Steiner, James D. ^[1]; Cheng, Hao ^[2]; Walsh, Julia ^[1]; Zhang, Yan ^[3]; Zydlewski, Benjamin ^[1];

^[1]; Xu, Zhengrui ^[1];

^[1]; Sun, Huabin ^[4]; Michel, F. Marc ^[1]; Sun, Cheng-Jun ^[5]; Nordlund, Dennis ^[3];

^[4]; Zheng, Jin-Cheng ^[2]; Xin, Huolin L. ^[6];

^[1]

Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Xiamen Univ. (China); Xiamen Univ. Malaysia (Malaysia)
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Tongji Univ., Shanghai (China)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy

Publication Date:: Mon Oct 07 00:00:00 EDT 2019

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)-Guangdong Joint Fund

OSTI Identifier:: 1596283

Alternate Identifier(s):: OSTI ID: 1631990

Grant/Contract Number:: AC02-76SF00515; EE0008444; AC02-06CH11357; SC0012704; U1501501

Resource Type:: Accepted Manuscript

Journal Name:: ACS Applied Materials and Interfaces

Additional Journal Information:: Journal Volume: 11; Journal Issue: 41; Journal ID: ISSN 1944-8244

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; battery; cathode; surface doping; oxygen activity; surface chemistry

Citation Formats


                    Steiner, James D., Cheng, Hao, Walsh, Julia, Zhang, Yan, Zydlewski, Benjamin, Mu, Linqin, Xu, Zhengrui, Rahman, Muhammad Mominur, Sun, Huabin, Michel, F. Marc, Sun, Cheng-Jun, Nordlund, Dennis, Luo, Wei, Zheng, Jin-Cheng, Xin, Huolin L., and Lin, Feng. Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials.  United States: N. p., 2019. 
Web.  doi:10.1021/acsami.9b14729.

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                    Steiner, James D., Cheng, Hao, Walsh, Julia, Zhang, Yan, Zydlewski, Benjamin, Mu, Linqin, Xu, Zhengrui, Rahman, Muhammad Mominur, Sun, Huabin, Michel, F. Marc, Sun, Cheng-Jun, Nordlund, Dennis, Luo, Wei, Zheng, Jin-Cheng, Xin, Huolin L., & Lin, Feng. Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials.  United States.  https://doi.org/10.1021/acsami.9b14729

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                    Steiner, James D., Cheng, Hao, Walsh, Julia, Zhang, Yan, Zydlewski, Benjamin, Mu, Linqin, Xu, Zhengrui, Rahman, Muhammad Mominur, Sun, Huabin, Michel, F. Marc, Sun, Cheng-Jun, Nordlund, Dennis, Luo, Wei, Zheng, Jin-Cheng, Xin, Huolin L., and Lin, Feng. Mon .  
"Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials".  United States.  https://doi.org/10.1021/acsami.9b14729.  https://www.osti.gov/servlets/purl/1596283.

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@article{osti_1596283,

  title        = {Targeted Surface Doping with Reversible Local Environment Improves Oxygen Stability at the Electrochemical Interfaces of Nickel-Rich Cathode Materials},

  author       = {Steiner, James D. and Cheng, Hao and Walsh, Julia and Zhang, Yan and Zydlewski, Benjamin and Mu, Linqin and Xu, Zhengrui and Rahman, Muhammad Mominur and Sun, Huabin and Michel, F. Marc and Sun, Cheng-Jun and Nordlund, Dennis and Luo, Wei and Zheng, Jin-Cheng and Xin, Huolin L. and Lin, Feng},

  abstractNote = {Elemental doping represents a prominent strategy to improve interfacial chemistry in battery materials. Manipulating the dopant spatial distribution and understanding the dynamic evolution of the dopants at the atomic scale can inform better design of the doping chemistry for batteries. Herein, we create a targeted hierarchical distribution of Ti4+, a popular doping element for oxide cathode materials, in LiNi0.8Mn0.1Co0.1O2 primary particles. We apply multiscale synchrotron/electron spectroscopy and imaging techniques as well as theoretical calculations to investigate the dynamic evolution of the doping chemical environment. The Ti4+ dopant is fully incorporated into the TMO6 octahedral coordination and is targeted to be enriched at the surface. Ti4+ in the TMO6 octahedral coordination increases the TM–O bond length and reduces the covalency between (Ni, Mn, Co) and O. The excellent reversibility of Ti4+ chemical environment gives rise to superior oxygen reversibility at the cathode–electrolyte interphase and in the bulk particles, leading to improved stability in capacity, energy, and voltage. Our work directly probes the chemical environment of doping elements and helps rationalize the doping strategy for high-voltage layered cathodes.},

  doi          = {10.1021/acsami.9b14729},

  journal      = {ACS Applied Materials and Interfaces},

  number       = 41,

  volume       = 11,

  place        = {United States},

  year         = {Mon Oct 07 00:00:00 EDT 2019},

  month        = {Mon Oct 07 00:00:00 EDT 2019}

}

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