Solomon Tolulope Oyakhire

All Publications

• Electrical resistance of the current collector controls lithium morphology. Nature communications Oyakhire, S. T., Zhang, W., Shin, A., Xu, R., Boyle, D. T., Yu, Z., Ye, Y., Yang, Y., Raiford, J. A., Huang, W., Schneider, J. R., Cui, Y., Bent, S. F. 2022; 13 (1): 3986

  Abstract

  The electrodeposition of low surface area lithium is critical to successful adoption of lithium metal batteries. Here, we discover the dependence of lithium metal morphology on electrical resistance of substrates, enabling us to design an alternative strategy for controlling lithium morphology and improving electrochemical performance. By modifying the current collector with atomic layer deposited conductive (ZnO, SnO2) and resistive (Al2O3) nanofilms, we show that conductive films promote the formation of high surface area lithium deposits, whereas highly resistive films promote the formation of lithium clusters of low surface area. We reveal an electrodeposition mechanism in which radial diffusion of electroactive species is promoted on resistive substrates, resulting in lateral growth of large (150m in diameter) planar lithium deposits. Using resistive substrates, similar lithium morphologies are formed in three distinct classes of electrolytes, resulting in up to ten-fold improvement in battery performance. Ultimately, we report anode-free pouch cells using the Al2O3-modified copper that maintain 60 % of their initial discharge capacity after 100 cycles, displaying the benefits of resistive substrates for controlling lithium electrodeposition.

  View details for DOI 10.1038/s41467-022-31507-w

  View details for PubMedID 35821247

• A Solution-Processable High-Modulus Crystalline Artificial Solid Electrolyte Interphase for Practical Lithium Metal Batteries ADVANCED ENERGY MATERIALS Yu, Z., Seo, S., Song, J., Zhang, Z., Oyakhire, S. T., Wang, Y., Xu, R., Gong, H., Zhang, S., Zheng, Y., Tsao, Y., Mondonico, L., Lomeli, E. G., Wang, X., Kim, W., Ryu, K., Bao, Z. 2022

  View details for DOI 10.1002/aenm.202201025

  View details for Web of Science ID 000817818300001

• Understanding and Utilizing Reactive Oxygen Reservoirs in Atomic Layer Deposition of Metal Oxides with Ozone CHEMISTRY OF MATERIALS Schneider, J. R., de Paula, C., Richey, N. E., Baker, J. G., Oyakhire, S. T., Bent, S. F. 2022

  View details for DOI 10.1021/acs.chemmater.2c00753

  View details for Web of Science ID 000819992600001

• Methyl-methacrylate based aluminum hybrid film grown via three-precursor molecular layer deposition JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A Oyakhire, S. T., Ablat, H., Richey, N. E., Bent, S. F. 2022; 40 (2)

  View details for DOI 10.1116/6.0001505

  View details for Web of Science ID 000756554100001

• Graphene coating on silicon anodes enabled by thermal surface modification for high-energy lithium-ion batteries MRS BULLETIN Kim, S., Huang, W., Zhang, Z., Wang, J., Kim, Y., Jeong, Y., Oyakhire, S. T., Yang, Y., Cui, Y. 2022

  View details for DOI 10.1557/s43577-021-00191-4

  View details for Web of Science ID 000771066700003

• Scalable, Ultrathin, and High-Temperature-Resistant Solid Polymer Electrolytes for Energy-Dense Lithium Metal Batteries ADVANCED ENERGY MATERIALS Ma, Y., Wan, J., Yang, Y., Ye, Y., Xiao, X., Boyle, D. T., Burke, W., Huang, Z., Chen, H., Cui, Y., Yu, Z., Oyakhire, S. T. 2022

  View details for DOI 10.1002/aenm.202103720

  View details for Web of Science ID 000760882000001

• Suspension electrolyte with modified Li+ solvation environment for lithium metal batteries. Nature materials Kim, M. S., Zhang, Z., Rudnicki, P. E., Yu, Z., Wang, J., Wang, H., Oyakhire, S. T., Chen, Y., Kim, S. C., Zhang, W., Boyle, D. T., Kong, X., Xu, R., Huang, Z., Huang, W., Bent, S. F., Wang, L., Qin, J., Bao, Z., Cui, Y. 1800

  Abstract

  Designing a stable solid-electrolyte interphase on a Li anode is imperative to developing reliable Li metal batteries. Herein, we report a suspension electrolyte design that modifies the Li+ solvation environment in liquid electrolytes and creates inorganic-rich solid-electrolyte interphases on Li. Li2O nanoparticles suspended in liquid electrolytes were investigated as a proof of concept. Through theoretical and empirical analyses of Li2O suspension electrolytes, the roles played by Li2O in the liquid electrolyte and solid-electrolyte interphases of the Li anode are elucidated. Also, the suspension electrolyte design is applied in conventional and state-of-the-art high-performance electrolytes to demonstrate its applicability. Based on electrochemical analyses, improved Coulombic efficiency (up to ~99.7%), reduced Li nucleation overpotential, stabilized Li interphases and prolonged cycle life of anode-free cells (~70 cycles at 80% of initial capacity) were achieved with the suspension electrolytes. We expect this design principle and our findings to be expanded into developing electrolytes and solid-electrolyte interphases for Li metal batteries.

  View details for DOI 10.1038/s41563-021-01172-3

  View details for PubMedID 35039645

• Rational solvent molecule tuning for high-performance lithium metal battery electrolytes NATURE ENERGY Yu, Z., Rudnicki, P. E., Zhang, Z., Huang, Z., Celik, H., Oyakhire, S. T., Chen, Y., Kong, X., Kim, S., Xiao, X., Wang, H., Zheng, Y., Kamat, G. A., Kim, M., Bent, S. F., Qin, J., Cui, Y., Bao, Z. 2022

  View details for DOI 10.1038/s41560-021-00962-y

  View details for Web of Science ID 000742253900001

• Capturing the swelling of solid-electrolyte interphase in lithium metal batteries. Science (New York, N.Y.) Zhang, Z., Li, Y., Xu, R., Zhou, W., Li, Y., Oyakhire, S. T., Wu, Y., Xu, J., Wang, H., Yu, Z., Boyle, D. T., Huang, W., Ye, Y., Chen, H., Wan, J., Bao, Z., Chiu, W., Cui, Y. 1800; 375 (6576): 66-70

  Abstract

  [Figure: see text].

  View details for DOI 10.1126/science.abi8703

  View details for PubMedID 34990230

• Revealing and Elucidating ALD-Derived Control of Lithium Plating Microstructure ADVANCED ENERGY MATERIALS Oyakhire, S. T., Huang, W., Wang, H., Boyle, D. T., Schneider, J. R., de Paula, C., Wu, Y., Cui, Y., Bent, S. F. 2020

  View details for DOI 10.1002/aenm.202002736

  View details for Web of Science ID 000578514900001

• Applications of atomic layer deposition and chemical vapor deposition for perovskite solar cells ENERGY & ENVIRONMENTAL SCIENCE Raiford, J. A., Oyakhire, S. T., Bent, S. F. 2020; 13 (7): 1997–2023

  View details for DOI 10.1039/d0ee00385a

  View details for Web of Science ID 000549074800004