Junyan Li
Postdoctoral Scholar, Materials Science and Engineering
All Publications
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Scalable Carbon Dioxide Capture Using Clay-Derived Zeolites via Atomic Rearrangement.
Journal of the American Chemical Society
2026
Abstract
Effective carbon capture materials are crucial for mitigating climate change and supporting sustainable industrial processes. However, developing scalable, cost-effective adsorbents with high carbon dioxide capacity, superior selectivity, and long-term stability remains a major challenge. Here, we report the scalable synthesis of Linde Type A zeolite via atomic reassembly of halloysite clay using mature industrial processes, achieving a high carbon dioxide adsorption capacity of 5.0 mmol g-1 with good cyclic stability. The transformation from a layered to a cubic framework with enlarged vacant spaces significantly enhances carbon dioxide accommodation. Additionally, the as-prepared zeolite demonstrates outstanding carbon dioxide/nitrogen selectivity (178 for 5% carbon dioxide) and robust thermal stability over multiple adsorption-desorption cycles. In situ tests reveal that adsorption is primarily governed by weakly bound interactions, allowing for the easy regeneration. This study presents a promising and scalable strategy for developing high-performance adsorbents toward gigaton-scale carbon dioxide capture applications.
View details for DOI 10.1021/jacs.5c20976
View details for PubMedID 41736194
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NiSO4-Driven In Situ Alloy Formation To Unlock Highly Reversible Iron Electrochemistry in Aqueous Batteries.
Journal of the American Chemical Society
2026
Abstract
Grid-scale stationary energy storage requires technologies that are both safe and economically viable. Iron (Fe) metal-based aqueous batteries offer an attractive option owing to the abundance, low cost, and environmental benignity of iron, but their development has been hampered by uncontrolled hydrogen evolution and poor reversibility of iron plating and stripping. Here, we report using nickel sulfate (NiSO4) as an electrolyte additive to induce the in situ formation of a FeNi3 alloy interphase during early cycling. This alloy lowers the Fe nucleation barrier and promotes uniform iron deposition. Moreover, dynamic codeposition and stripping of Ni with Fe sustains fast reaction kinetics and stabilizes the alloy interphase during long-term cycling. As a result, Fe||Fe symmetric cells achieve over 3000 h of stable cycling, nearly an order of magnitude improvement over the baseline electrolyte. Fe||Cu cells with NiSO4 additives enable stable long-term cycling with a high average Coulombic efficiency (CE) of ∼99.4%, while the control electrolyte rapidly fails with an average CE of 82.9%. These findings demonstrate that functional electrolyte additives and the controlled alloying interphase provide a viable pathway to high-performance, cost-effective iron metal-based aqueous batteries for large-scale energy storage.
View details for DOI 10.1021/jacs.5c15954
View details for PubMedID 41593008
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Epitaxial Electrodeposition of Fe with Controlled In-Plane Variants for a Reversible Metal Anode in an Aqueous Electrolyte.
Nano letters
2026
Abstract
The development of reversible metal anodes is a key challenge for advancing aqueous battery technologies, particularly for scalable and safe stationary energy storage applications. Here we demonstrate a strategy to realize epitaxial electrodeposition of iron (Fe) on single-crystal copper (Cu) substrates in aqueous electrolytes. We compare the electrodeposition behavior of Fe on polycrystalline and single-crystalline Cu substrates, revealing that the latter enables highly uniform, dense, and crystallographically aligned Fe growth. Comprehensive electron backscatter diffraction and X-ray diffraction analyses confirm the formation of Fe with specific out-of-plane and in-plane orientations, including well-defined rotational variants. Our findings highlight that epitaxial electrodeposition of Fe can suppress dendritic growth and significantly enhance the Coulombic efficiency during plating/stripping cycles. This approach bridges fundamental crystallography with practical electrochemical performance, providing a pathway toward high-efficiency aqueous batteries utilizing Earth-abundant materials.
View details for DOI 10.1021/acs.nanolett.5c05270
View details for PubMedID 41513252
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Capacity recovery by transient voltage pulse in silicon-anode batteries.
Science (New York, N.Y.)
2024; 386 (6719): 322-327
Abstract
In the quest for high-capacity battery electrodes, addressing capacity loss attributed to isolated active materials remains a challenge. We developed an approach to substantially recover the isolated active materials in silicon electrodes and used a voltage pulse to reconnect the isolated lithium-silicon (LixSi) particles back to the conductive network. Using a 5-second pulse, we achieved >30% of capacity recovery in both Li-Si and Si-lithium iron phosphate (Si-LFP) batteries. The recovered capacity sustains and replicates through multiple pulses, providing a constant capacity advantage. We validated the recovery mechanism as the movement of the neutral isolated LixSi particles under a localized nonuniform electric field, a phenomenon known as dielectrophoresis.
View details for DOI 10.1126/science.adn1749
View details for PubMedID 39418354