Vandung Dao, Lorenzo Guano de Blasio, Sunny Yadav, Giovanni Di Liberto, Sang-Ik Lee, Young-Sang Yu, Chunjoong Kim, Leewoon Jang, Hyun You Kim, Gianfranco Pacchioni, In-Hwan Lee
{"title":"Asymmetric Charge Redistribution at the Tri-Functional Cu1–Ru/CeOx Interface Enables Alkaline Hydrogen Evolution Reaction","authors":"Vandung Dao, Lorenzo Guano de Blasio, Sunny Yadav, Giovanni Di Liberto, Sang-Ik Lee, Young-Sang Yu, Chunjoong Kim, Leewoon Jang, Hyun You Kim, Gianfranco Pacchioni, In-Hwan Lee","doi":"10.1002/idm2.70052","DOIUrl":"https://doi.org/10.1002/idm2.70052","url":null,"abstract":"<p>The development of efficient electrocatalysts for the alkaline hydrogen evolution reaction (HER) remains a key challenge for hydrogen energy conversion. Here, we report a Cu-substituted Ru nanoparticle catalyst in which atomically dispersed Cu (0.31 wt%) is substituted into Ru nanoparticles (3.54 wt%) supported on oxygen-deficient ceria (Cu<sub>1</sub>–Ru/CeO<sub><i>x</i></sub>). This catalyst exhibits outstanding alkaline HER performance, delivering a low overpotential of 47 mV at 10 mA cm<sup>−2</sup>, a small Tafel slope of 43 mV dec<sup>−1</sup>, and a high mass activity exceeding 3.0 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <mi>A</mi>\u0000 <mspace></mspace>\u0000 \u0000 <msup>\u0000 <msub>\u0000 <mtext>mg</mtext>\u0000 \u0000 <mtext>Ru</mtext>\u0000 </msub>\u0000 \u0000 <mrow>\u0000 <mo>−</mo>\u0000 \u0000 <mn>1</mn>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 </mrow>\u0000 </semantics></math>, outperforming commercial Pt/C. The catalyst retains 95% of its initial activity after 100 h of continuous operation. Spectroscopic, structural, and DFT analyses reveal an asymmetric interfacial charge distribution: charge transfer from Cu to Ru generates electron-rich Ru and electron-deficient Cu<sub>1</sub>, while electron donation from Ru to ceria forms Ce<sup>3+</sup> and oxygen vacancies. This tri-functional interface enables efficient water dissociation at Ce<sup>3+</sup>–O<sub>v</sub> sites, optimized hydroxyl adsorption/desorption on electron-rich Ru, and weakened H binding on electron-deficient Cu<sub>1</sub>, thereby promoting H<sub>2</sub> release. When paired with a RuO<sub>2</sub> anode, the Cu<sub>1</sub>–Ru/CeO<sub><i>x</i></sub>(−)║RuO<sub>2</sub>(+) electrolyzer surpasses Pt/C(−)║RuO<sub>2</sub>(+) in full-cell efficiency and long-term stability, highlighting the importance of interfacial charge modulation and multi-site cooperativity in alkaline HER catalysis.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":"465-476"},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148131091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sacrificial Leaching Enables Fe-Rich Oxyhydroxide Reconstruction on In2S3 Photoanode","authors":"Zhenhao He, Tianyun Liu, Dongniu Wang, Yulong Huang, Linxing Meng, Liang Li","doi":"10.1002/idm2.70055","DOIUrl":"https://doi.org/10.1002/idm2.70055","url":null,"abstract":"<p>Photoelectrochemical (PEC) water splitting is often constrained by interfacial recombination and sluggish oxygen evolution, highlighting the importance of constructing efficient catalytic junctions on photoanodes. Here, we report that a brief PEC activation restructures a photodeposited NiFe oxyhydroxide layer on In<sub>2</sub>S<sub>3</sub> into a self-optimized catalytic interface through sacrificial Ni leaching-induced interfacial reconstruction. Activation triggers selective Ni leaching and simultaneous surface porosification, generating an amorphous FeOOH-like overlayer that is intimately coupled to the sulfide surface. Spectroscopic, kinetic, and theoretical analyses indicate that reconstruction strengthens electronic coupling, suppresses carrier recombination, and lowers charge-transfer resistance at both the semiconductor/cocatalyst and cocatalyst/electrolyte interfaces. Consequently, the activated photoanode delivers 9.58 mA cm<sup>−2</sup> at 1.23 V versus reversible hydrogen electrode, placing its performance among the best reported for oxide and sulfide photoanodes under comparable conditions. Beyond performance enhancement, this work highlights operando interface reconstruction as a powerful route for transforming static cocatalyst contacts into dynamically optimized catalytic junctions, providing new insights for the design of high-efficiency solar water oxidation systems.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":"477-486"},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148106228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Outside Back Cover: Volume 5 Issue 3","authors":"","doi":"10.1002/idm2.70065","DOIUrl":"https://doi.org/10.1002/idm2.70065","url":null,"abstract":"<p><b>Outside Back Cover</b>: In the article of doi: 10.1002/idm2.70053, the distributed multi-joint motion recognition cluster based on PVDF membranes with high piezoelectric properties adopted a one-master-multiple-slaves architecture and multi-point wireless collaboration to synchronously recognize motions of the wrist, elbow, and shoulder.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":""},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148128066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-Performance MnOOH/α-MnO2 Composite Cathode With Enhanced Capacity and Cycling Stability for Aqueous Zinc-Ion Batteries","authors":"Xin Chen, Xia Ding, Wenhui Shi, Dongshu Liu, Shibo Meng, Jiayi Zhang, Xilian Xu, Tianqi Deng, Ye Chen, Henan Wang, Wenxian Liu, Fangfang Wu, Jiangnan Shen, Xiehong Cao","doi":"10.1002/idm2.70048","DOIUrl":"https://doi.org/10.1002/idm2.70048","url":null,"abstract":"<p>Manganese-based cathode materials hold great promise for aqueous zinc-ion batteries (AZIBs) due to their high operating voltage and low cost. Among these, manganese dioxide (MnO<sub>2</sub>) cathodes exhibit particularly promising electrochemical characteristics but face critical challenges including insufficient electrical conductivity and rapid capacity fading. To address these issues, manganese oxyhydroxide (MnOOH) and <i>α</i>-MnO<sub>2</sub> have been studied. MnOOH offers excellent cycling stability but suffers from a relatively low specific capacity, whereas <i>α</i>-MnO<sub>2</sub> delivers high specific capacity but exhibits poor cycling stability. A rationally designed MnOOH/<i>α</i>-MnO<sub>2</sub> composite was synthesized via a crystal phase transformation method, using <i>δ</i>-MnO<sub>2</sub> as the precursor. The composite features a unique nanowire and nanorod morphology and is employed as a cathode material for AZIBs. It outperforms its individual components, achieving a high specific capacity of 233.4 mAh g<sup>−</sup><sup>1</sup> after 750 cycles at 1 A g<sup>−1</sup>. At an elevated current density of 2 A g<sup>−1</sup>, it maintains a stable specific capacity of 85.0 mAh g<sup>−1</sup> after 17,000 cycles. Comprehensive mechanistic investigations reveal that the zinc storage process involves the co-intercalation/extraction of Zn<sup>2+</sup> and H<sup>+</sup> ions, coupled with reversible MnO<sub>2</sub> dissolution and redeposition. These findings highlight the potential of MnOOH/<i>α</i>-MnO<sub>2</sub> composites as high-performance cathode materials for AZIBs, effectively addressing the challenges of capacity limitation and cycling stability.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":"440-450"},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148121697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Curvature and Microenvironment Regulation Enable Robust Seawater Electrochemical Hydrogen Peroxide Synthesis for On-Site Marine Aquaculture","authors":"Chang Zhang, Chunliang He, Huiyao Qi, Lilong Zhang, Hongshang Hu, Houfeng Zhang, Tonghui Zhao, Muneerah Alomar, Lipiao Bao, Huiying Yang, Jian Zhang, Xing Lu","doi":"10.1002/idm2.70044","DOIUrl":"https://doi.org/10.1002/idm2.70044","url":null,"abstract":"<p>Direct electrosynthesis of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) from seawater holds promising prospects for advancing the marine industries. However, the catalysts face severe challenges arising from sluggish oxygen reduction reaction (ORR) kinetics and poor stability under neutral and corrosive chloride ion (Cl<sup>−</sup>) conditions of seawater. Herein, we introduce a curvature and microenvironment co-engineering strategy by constructing a pentagon-defect-enriched and interconnected spherical-architecture carbon (PD/IS-C). The pentagon defects induce geometric curvature and electronic rearrangement, thus enhancing ORR kinetics, while the interconnected nanospherical channels facilitate mass transfer to create a local alkaline microenvironment that repels Cl<sup>−</sup>, improving stability. Benefiting from this dual regulation, the PD/IS-C catalyst achieves outstanding 2e<sup>−</sup> ORR performance in seawater, delivering an ultrahigh H<sub>2</sub>O<sub>2</sub> yield rate of 67.1 mol g<sub>cat</sub><sup>−1</sup> h<sup>−1</sup>, ~90% Faraday efficiency, and more than 300 h of operational stability. Moreover, the PD/IS-C electrode achieves the coupling of seawater H<sub>2</sub>O<sub>2</sub> electrosynthesis with real aquaculture practice for the first time, significantly improving the survival rate of fish. This work demonstrates curvature–microenvironment co-engineering as a powerful design paradigm for robust seawater electrosynthesis and applications.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":"412-424"},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148125409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inside Front Cover: Volume 5 Issue 3","authors":"","doi":"10.1002/idm2.70064","DOIUrl":"https://doi.org/10.1002/idm2.70064","url":null,"abstract":"<p><b>Inside Front Cover</b>: In the article of doi: 10.1002/idm2.70044, the electrochemical system, which can utilize the abundant renewable energy and air in coastal areas, realizes the insitu synthesis and application of H<sub>2</sub>O<sub>2</sub> in seawater, offering an eco-friendly, efficient, and sustainable solution for water disinfection and water quality regulation in marine aquaculture.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 3","pages":""},"PeriodicalIF":24.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148128065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kai Chen, Vandung Dao, Guangda Han, Jinquan Li, Periyayya Uthirakumar, Kun Han, Sunny Yadav, In-Hwan Lee
{"title":"Unlocking the Potential of Heterogeneous Single-Atom Catalysts for Renewable Energy Systems: From Foundation to Application","authors":"Kai Chen, Vandung Dao, Guangda Han, Jinquan Li, Periyayya Uthirakumar, Kun Han, Sunny Yadav, In-Hwan Lee","doi":"10.1002/idm2.70043","DOIUrl":"10.1002/idm2.70043","url":null,"abstract":"<p>The development of green energy storage and conversion devices is vital for addressing global environmental challenges and pursuing carbon-neutral energy solutions. Single-atom catalysts (SACs) exhibit the benefits of maximum atom utilization efficiency, unique catalytic activity, and exceptional selectivity, holding promise for next-generation sustainable energy systems. However, the practical deployment of SACs in renewable energy devices is hindered by the propensity of atomically dispersed metal species to sintering and aggregation during synthesis or high-temperature operation. This review provides a concise yet comprehensive overview of the recent advances in the design, synthesis, and stabilization of well-dispersed SACs on diverse supports with tunable electronic and structural properties, focusing on synthesis strategies that precisely regulate atomic dispersion, advanced methods of probing atomic-scale active sites, and key breakthroughs in SAC-based electrode applications. Potential and existing barriers hindering large-scale SAC commercialization are emphasized. Valuable insights into the structure–function relationships of SACs are provided, and future directions for developing efficient, durable, and scalable SACs for green energy storage and conversion technologies are outlined.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 2","pages":"205-242"},"PeriodicalIF":24.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147682990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inside Front Cover: Volume 5 Issue 2","authors":"","doi":"10.1002/idm2.70051","DOIUrl":"10.1002/idm2.70051","url":null,"abstract":"<p><b>Inside Front Cover</b>: The cover image of doi: 10.1002/idm2.70033 illustrates the concept of “Designer Entropy”—a chemically guided paradigm for thermoelectric materials that moves beyond indiscriminate compositional complexity to targeted compositional intelligence. The bifurcated crystal structure depicts two distinct alloying pathways in a SnTe(GeSe)<sub>0.25</sub> matrix: Sb doping (left, near-matched atomic radius) preserves electronic transport and delivers ~20% higher output power, while Bi doping (right, large radius/mass mismatch) maximizes phonon scattering but suppresses carrier mobility. Despite achieving nearly identical conversion efficiencies (~5.7%), the two pathways produce markedly different power outputs, demonstrating that high zT does not guarantee high power and that rational element selection is essential for co-optimizing thermoelectric performance.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 2","pages":""},"PeriodicalIF":24.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147682984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Patternable Stimuli-Responsive Perovskite Fiber Membranes for Underwater Anti-Counterfeiting and Information Encryption","authors":"Huanyu Chen, Ying Tan, Zhirou Chen, Guo Yang, Tian Tian, Jiehao Du, Shaojin Gu, Fuzhi Huang, Wu-Qiang Wu","doi":"10.1002/idm2.70034","DOIUrl":"10.1002/idm2.70034","url":null,"abstract":"<p>All-inorganic lead halide perovskites are favored for next-generation optoelectronic devices due to their exceptional photoluminescence quantum yields (PLQYs), wide color gamut, and structural tunability. However, their application in intelligent materials, especially for dynamic optical encryption and anti-counterfeiting in aqueous or humid environments, remains challenging owing to their poor water stability and lack of tunable response under external stimuli. Here, we reported a scalable strategy to fabricate large-area (15 cm × 25 cm), hierarchically porous perovskite fiber membranes (PFMs) that enabled water-responsive, reversible fluorescence modulation. By developing a dual-ligand surface passivation approach, combining hydrophilic supramolecular cyclodextrins and hydrophobic long-chain alkylamines, we simultaneously achieved surface passivation, water resistance, as well as dynamic bandgap modulation and defect engineering within a single material platform. The resulting blue-emitting PFMs demonstrated a high PLQY of 86.3%, narrow-band emission (full-width at half-maximum value of ~20 nm), enhanced color purity up to 96.4%, and long-term stability (> 4000 h) under ambient conditions. More interestingly, moisture-induced ligand reorganization enabled reversible fluorescence shifts from deep-blue (461.1 nm) to cyan-green (504.9 nm) across multiple cycles (with > 95% photoluminescence intensity retention) and in a wide pH range (3–13). We further demonstrated an ASCII-encoded microdots array and dual-mode optical encryption system that allowed orthogonal decoding via moisture and ultraviolet stimuli, highlighting the potential of these materials for underwater anti-counterfeiting and dynamic information encryption. This work provides a new paradigm for integrating intelligent stimulus responsiveness with stable optoelectronic performance in perovskites, paving the way for their application in secure information technologies and smart photonic devices in harsh environments.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 2","pages":"274-289"},"PeriodicalIF":24.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Plasmonic Heterojunction Nanomaterials for Noninvasive Pan-Cancer Metabolomic Screening","authors":"Jia Qi, Hairu Lin, Caiyun Fang, Jia Li, Fangying Shi, Chunhui Deng","doi":"10.1002/idm2.70036","DOIUrl":"10.1002/idm2.70036","url":null,"abstract":"<p>Cancer remains a major global health challenge, underscoring the urgent need for early diagnostic strategies. Altered cancer metabolism can be captured through serum analysis by laser desorption/ionization mass spectrometry (LDI-MS). Here, we report the design of gold nanoparticle-modified manganese–cobalt oxide heterojunctions (Au/MCOHs) as a high-performance LDI-MS nano-matrix. The Au/MCOHs combine strong ultraviolet absorption, enhanced charge separation, and favorable surface potential to achieve efficient laser energy conversion and ionization. Leveraging this platform, we performed serum metabolomic analysis on 698 participants, comprising healthy controls and patients with six different cancer types. Machine learning models distinguished cancer patients from healthy controls with area under the curve (AUC) values up to 0.955. Critically, early-stage cancers were also detected, with AUCs ranging from 0.776 to 0.938. Thirteen cancer-associated metabolites were identified, and a combined diagnostic panel achieved an AUC of 0.865. This study demonstrates how rationally engineered plasmonic heterojunction nanomatrices can bridge materials innovation and clinical translation, offering a robust, non-invasive route for pan-cancer metabolomic screening.</p>","PeriodicalId":100685,"journal":{"name":"Interdisciplinary Materials","volume":"5 2","pages":"290-300"},"PeriodicalIF":24.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/idm2.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}