Description: Wanli Yang 杨万里 Wanli Yang personal research webpage

Ph.D. Senior Scientist
Advanced Light Source, Lawrence Berkeley National Laboratory
Mail: MS6R2100, 1 Cyclotron Road, Berkeley, CA 94720
: WLYang (at)
Phone: (510) 486-4989

(510) 495-2067




Techniques :
(current focus)
Synchrotron based soft X-ray spectroscopy: soft X-ray absorption (sXAS), X-ray emission (sXES), Resonant Inelastic X-ray Scattering (RIXS), high-effeciency full-energy-range mapping of RIXS (mRIXS).
(limited/past effort) Ultraviolet Photoelectron Spectroscopy (UPS), and Core level X-ray Photoelectron Spectroscopy (XPS), Angle Resolved Photoelectron (ARPES).

Materials :
(current focus) Materials for energy applications, including materials for energy storage, photovoltaic, and catalysts.
(limited/past effort) Molecular crystal systems and nanoclusters; highly correlated materials.



1991-1995 B.S. Shandong University, China (Physics)
1995-2000 Ph.D. Institute of Physics, Chinese Academy of Sciences (Condensed Matter Physics)
2001-2004 Postdoc Stanford University (Condensed Matter Physics: Spectroscopy)


9/2006 - present, Career Physicist Scientist, Advanced Light Source, Lawrence Berkeley National Laboratory
9/2004 - 9/2006, Staff Scientist, Geballe Laboratory for Advanced Materials (GLAM), Stanford University


Techniques (Simplified schematics here, see references for details)

Soft XAS (sXAS) Atomic Schematic (2008)

XES and RIXS Atomic Schematic (2017)

Reference: Yang & Devereaux J. Power Sources 389, 188 (2018) (PDF)



High-effeciency full-energy-range mapping of RIXS (mRIXS) (2016)

Reference: Qiao et al., Review of Scientific Instruments 88, 033106 (2017) (PDF)



Direct probes of transition-metals and O oxidation states through mRIXS-iPFY (left) and mRIXS-sPFY (right), respectively (2018)

Mn-L mRIXS iPFY < >< >< >O-K mRIXS sPFY
Reference: Dai et al., Joule 3, 518-541 (2019) (PDF)



Publication List on Web of Science

Publication List on Google Scholar


TUTORIAL: XAS, XES, RIXS, mRIXS, mRIXS-iPFY, mRIXS-sPFY - with examples on battery material studies

A slow & easy lecture video on battery material studies through soft X-ray RIXS


Below are categorized references for educational purposes:

-- mRIXS of TM-based energy storage materials

(Why we need mRIXS?) S Roychoudhury, R Qiao, Z Zhuo, Q Li, Y Lyu, JH Kim, J Liu, E Lee, BJ Polzin, J Guo, S Yan, Y Hu, H Li*, D Prendergast*, WL Yang*
Deciphering the oxygen absorption pre‐edge: a caveat on its application for probing oxygen redox reactions in batteries
Energy & Environmental Materials, doi:10.1002/eem2.12119 (2020)

(O & TM) JP Wu, ZQ Zhuo, XH Rong, KH Dai, Z Lebens-Higgins, S Sallis, F Pan, LFJ Piper, G Liu, YD Chuang, Z Hussain, QH Li, R Zeng*, ZX Shen*, WL Yang*
Dissociate lattice oxygen redox reactions from capacity and voltage drops of battery electrodes
Science Advances 6, eaaw3871 (2020)

(O & TM) KH Dai, JP Wu, ZQ Zhuo, QH Li, S Sallis, J Mao, G Ai, CH Sun, ZY Li, WE Gent, WC Chueh, Y-d Chuang, R Zeng, Z-x Shen, F Pan, SS Yan, LFJ Piper, Z Hussain, G Liu*, WL Yang*
High Reversibility of Lattice Oxygen Redox Quantified by Direct Bulk Probes of Both Anionic and Cationic Redox Reactions
Joule 3, 518-541 (2019) (PDF)

(O in Na-ion Battery) KH Dai, J Mao, ZQ Zhuo, Y Feng, WF Mao, G Ai, F Pan, Y.-d Chuang, G Liu*, WL Yang*
Negligible voltage hysteresis with strong anionic redox in conventional battery electrode
Nano Energy 74 104831 (2020)

(O in Li-rich) WE Gent, K Lim, YF Liang, QH Li, T Barnes, S-J Ahn, KH Stone, M McIntire, J Hong, JH Song, Y Li, A Mehta, S Ermon, T Tyliszczak, D Kilcoyne, D Vine, JH Park, SK Doo, MF Toney*, WL Yang*, D Prendergast*, WC Chueh*.
Coupling between oxygen redox and cation migration explains unusual electrochemistry in lithium-rich layered oxides
Nature Communications 8:2091 (2017)

(O in conventional electrodes) GH Lee, JP Wu, D Kim, K Cho, M Cho, WL Yang*, YM Kang*
Reversible Anionic Redox Activities in Conventional LiNi1/3Co1/3Mn1/3O2 Cathodes
Angewandte Chemie International Edition doi:10.1002/ange.202001349 (2020)

(TM) A Firouzi, RM Qiao, S Motallebi, CW Valencia, HS Israel, M Fujimoto, LA Wray, Y-D Chuang, WL Yang*, CD Wessells*
Monovalent manganese based anodes and cosolvent electrolyte for stable low-cost high-rate sodium-ion batteries
Nature Communications 9:861 (2018)

(Li2O2) ZQ Zhuo, CD Pemmaraju, J Vinson, CJ Jia, B Moritz, I Lee, S Sallies, QH Li, JP Wu, KH Dai, Y-d Chuang, Z Hussain, F Pan, TP Devereaux*, WL Yang*
Spectroscopic signature of oxidized oxygen states in peroxides
The journal of physical chemistry letters 9, 6378 (2018)

(O2, CO2) ZQ Zhuo, Y-s Liu, JH Guo, Y-d Chuang, F Pan*, WL Yang*
Full Energy Range Resonant Inelastic X-ray Scattering of O2 and CO2: Direct Comparison with Oxygen Redox State in Batteries
The journal of physical chemistry letters 11, 2618 (2020)

(A different view on Li-rich) Z Zhuo, K Dai, R Qiao, R Wang, J Wu, Y Liu, J Peng, L Chen, Y-d Chuang, F Pan*, Z-x Shen, G Liu, H Li*, TP Devereaux*, WL Yang*
Cycling mechanism of Li2MnO3: Li–CO2 batteries and commonality on oxygen redox in cathode materials
Joule 5, (2021) DOI: 10.1016/j.joule.2021.02.004 (PDF)

(2018 Review) WL Yang*, TP Devereaux*
Anionic and cationic redox and interfaces in batteries: Advances from soft X-ray absorption spectroscopy to resonant inelastic scattering
Journal of Power Sources 389, 188 (2018) (PDF)


--- sXAS and XES of TM-based Energy Storage Materials

Transition-metals (TMs):
(Topical Review & references therein) , , , , , , , , WL Yang*.
Quantitative probe of the transition metal redox in battery electrodes through soft x-ray absorption spectroscopy

(Fe/Mn with spin states) JP Wu, J Song, KH Dai, ZQ Zhuo, LA Wray, G Liu, ZX Shen, R Zeng*, YH Lu*, WL Yang*
Modification of Transition-Metal Redox by Interstitial Water in Hexacyanometalate Electrodes for Sodium-Ion Batteries
Journal of the American Chemical Society 139, 18358 (2017)

(Manganese) Qiao, R., Dai, K., Mao, J., Weng, T.-C., Sokaras, D., Nordlund, D., Song, X., Battaglia, V. S., Hussain, Z., Liu, G.*, Yang, WL*.
Revealing and suppressing surface Mn(II) formation of Na0.44MnO2 electrodes for Na-ion batteries.
Nano Energy 16, 186-195 (2015)

(Nickel) Qiao, R., Wray, L. A.*, Kim, J.-H., Pieczonka, N. P. W., Harris, S. J., Yang, WL*.
Direct Experimental Probe of the Ni(II)/Ni(III)/Ni(IV) Redox Evolution in LiNi0.5Mn1.5O4Electrodes.
The Journal of Physical Chemistry C, 119, 27228-27233 (2015)

(Iron) Liu, XS; Liu, J; Qiao, RM; Yu, Y; Li, H; Suo, LM; Hu, YS; Chuang, YD; Shu, GJ; Chou, FC; Weng, TC; Nordlund, D; Sokaras, D; Wang, YJ; Lin, H; Barbiellini, B; Bansil, A; Song, XY; Liu, Z; Yan, SS; Liu, G; Qiao, S; Richardson, TJ; Prendergast, D; Hussain, Z; de Groot, FMF; Yang, WL*.
Phase Transformation and Lithiation Effect on Electronic Structure of LixFePO4: An In-Depth Study by Soft X-ray and Simulations
Journal of the American Chemical Society 134, 13708 (2012)

(sXAS & sXES)Liu, X., Wang, Y. J., Barbiellini, B.*, Hafiz, H., Basak, S., Liu, J., Richardson, T., Shu, G., Chou, F., Weng, T. C., Nordlund, D., Sokaras, D., Moritz, B., Devereaux, T. P., Qiao, R., Chuang, Y. D., Bansil, A., Hussain, Z., Yang, WL*.
Why LiFePO4 is a safe battery electrode: Coulomb repulsion induced electron-state reshuffling upon lithiation.
Physical chemistry chemical physics 17, 26369-26377, (2015)


--- non-TM based Energy Storage Materials:

(C-K) Liu, G*; Xun, S; Nenad, V; Song, XY; Olalde-Velasco, P; Zheng, HH; Battaglia, VS; Wang, LW; Yang, WL*.
Polymers with Tailored Electronic Structure for High Capacity Lithium Battery Electrodes
Advanced Materials 23, 4679 (2011)

(C-K, O-K) Qiao, RM; Lucas, IT; Karim, A; Syzdek, J; Liu, XS; Chen, W; Persson, K; Kostechi, R; Yang, WL*.
Distinct Solid-Electrolyte-Interphases on Sn (100) and (001) Electrodes Studied by Soft X-Ray Spectroscopy
Advanced Materials -Interfaces 1, 1300115 (2013)

(C-K, O-K) ZQ Zhuo, P Lu, C Delacourt, RM Qiao, K Xu, F Pan*, SJ Harris*, WL Yang*.
Breathing and oscillating growth of solidelectrolyte-interphase upon electrochemical cycling
Chemical Communications 54, 814 (2018)

(Li-K) RM Qiao, Y-D Chuang, SS Yan*, WL Yang*.
Soft X-Ray Irradiation Effects of Li2O2,Li2CO3 and Li2O Revealed by Absorption Spectroscopy
PLoS One 7, 349182 (2012)

-- Instrumentation & Technical: High-effeciency mRIXS endstation at the Advanced Light Source

(iRIXS) RM Qiao, QH Li, ZQ Zhuo, S Sallis, O Fuchs, M Blum, L Weinhardt, C Heske, J Pepper, M Jones, A Brown, A Spucces, K Chow, B Smith, P-A Glans, YX Chen, SS Yan, F Pan, LFJ Piper, J Denlinger, J Guo, Z Hussain, Y-D Chuang*, WL Yang*
High-efficiency in situ resonant inelastic x-ray scattering (iRIXS) endstation at the Advanced Light Source
Review of Scientific Instruments 88, 033106 (2017)

(Data processing) JP Wu, S Sallis, RM Qiao, QH Li, ZQ Zhuo, KH Dai, Z Guo, WL Yang*
Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
Journal of Visualized Experiments (134), e57415 (2018)

(Radiation Control) Q Li, ZW Lebens-Higgins, Y Li, YS Meng, YD Chuang, LFJ Piper*, Z Liu*,WL Yang*
Could Irradiation Introduce Oxidized Oxygen Signals in Resonant Inelastic X-ray Scattering of Battery Electrodes?
The Journal of Physical Chemistry Letters
12, 1138-1143 (2021)

--- Soft X-ray in-situ Techniques:
(Review on in-situ) Liu, X., Yang, WL* & Liu, Z*
Recent Progress on Synchrotron-Based In-Situ Soft X-ray Spectroscopy for Energy Materials.
Advanced Materials 26, 7710-7729, (2014)

(Solid-state in-situ) Liu, XS; Wang, DD; Liu, G*; Srinivasan, V; Liu, Z; Hussain, Z; Yang, WL*.
Distinct charge dynamics in battery electrodes revealed by in situ and operando soft X-ray spectroscopy
Nature Communications 4, 2568 (2013)

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