Haiyi Jiang , Huayang Cai , Lang Gan , Wei Chen , Wei Qiu , Yanjie Ren
{"title":"Constructing multi-active-site RuP₂/Co₂P/Ni₂P Electrocatalyst for urea assisted H₂ production","authors":"Haiyi Jiang , Huayang Cai , Lang Gan , Wei Chen , Wei Qiu , Yanjie Ren","doi":"10.1016/j.jelechem.2026.119907","DOIUrl":"10.1016/j.jelechem.2026.119907","url":null,"abstract":"<div><div>The development of electrocatalysts with multiple active sites is crucial for overcoming the sluggish kinetics of the urea oxidation reaction (UOR), a promising alternative to the energy-intensive oxygen evolution reaction (OER). Herein, we report the construction of a trimetallic RuP₂/Co₂P/Ni₂P heterostructure catalyst supported on nickel foam (NF) through a facile co-hydrothermal synthesis followed by phosphidation. This integrated approach enables the precise formation of abundant heterointerfaces and strong electronic interactions among the metal phosphides. Comprehensive experimental characterizations confirm that the incorporation of Ru effectively modulates the electronic structure and shifts the d-band center, thereby optimizing the adsorption energy of key reaction intermediates. The resultant catalyst exhibits remarkable electrocatalytic performance for both OER and UOR. In a 1 M KOH electrolyte with 0.2 M urea, the optimized catalyst achieves a current density of 100 mA cm<sup>−2</sup> at a low potential of 1.363 V (vs. RHE) for UOR, with a small Tafel slope of 105.41 mV dec<sup>−1</sup>. For HER, the catalyst achieves a low overpotential of 85.6 mV at 10 mA cm<sup>−2</sup> with a Tafel slope of 40.18 mV dec<sup>−1</sup>, outperforming most reported analogous catalysts. Furthermore, it demonstrates excellent operational stability, maintaining consistent activity over 37 h of continuous operation at 50 mA cm<sup>−2</sup>. This work provides a viable strategy for designing efficient multi-metallic phosphide heterostructures, highlighting their potential for energy-saving hydrogen production and urea-rich wastewater treatment.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119907"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuning Zhou , Kexin Zhang , Chun Xu , Yawen He , Fengyang Liu , Ying Xiong , Xinfang Zhang , Jiali Ren
{"title":"Rapid square wave voltammetry assay for antibiotic susceptibility test using methylene blue as an extracellular electron transfer","authors":"Yuning Zhou , Kexin Zhang , Chun Xu , Yawen He , Fengyang Liu , Ying Xiong , Xinfang Zhang , Jiali Ren","doi":"10.1016/j.jelechem.2026.119931","DOIUrl":"10.1016/j.jelechem.2026.119931","url":null,"abstract":"<div><div>Rapid identification of antibiotic-resistant bacteria is critical for effectively controlling and preventing their spread. Electrochemical methods have proven effective in detecting many targets but are limited because most bacteria cannot directly transfer electrons to inert electrodes without an electron mediator. In this study, we employed methylene blue (MB) as an exogenous electron shuttle between the bacteria and the electrode and proposed a square wave voltammetry (SWV) for distinguishing between antibiotic-sensitive and antibiotic-resistant bacteria. MB is reduced by metabolically active bacteria, diffuses to the electrode, and is re-oxidized, generating a measurable baseline current proportional to the viable cell population. The activity of bacteria is reflected in the SWV peak current signal observed at −0.2 V. The threshold value (75) was defined based on the analysis of five <em>E. coli</em> isolates tested with three antibiotics to identify antibiotic resistance. Additionally, antibiotic susceptibility of bacteria including <em>Pseudomonas aeruginosa</em>, <em>Salmonella typhimurium</em>, <em>Bacillus cereus,</em> and <em>Listeria monocytogenes</em> was successfully determined using the proposed electrochemical method. These results correlate well with those obtained using classical methods. Furthermore, the detection time of this electrochemical method (less than 2.0 h) is significantly faster compared to traditional microbiological methods (more than 48 h). This rapid and accurate identification of antibiotic resistance highlights the potential of our method for developing advanced antibiotic susceptibility tests.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119931"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhenghong Zhu , Jinhuan Yao , Zhihong Zhu , Jianwen Yang , Shunhua Xiao , Yanwei Li
{"title":"Process optimization for the preparation of LiFe0.5Mn0.5PO4/C cathode material from low-grade pyrolusite","authors":"Zhenghong Zhu , Jinhuan Yao , Zhihong Zhu , Jianwen Yang , Shunhua Xiao , Yanwei Li","doi":"10.1016/j.jelechem.2026.119890","DOIUrl":"10.1016/j.jelechem.2026.119890","url":null,"abstract":"<div><div>The low-cost synthesis of LiFe<sub>0.5</sub>Mn<sub>0.5</sub>PO<sub>4</sub> is extremely important for its large-scale practical application. In this work, LiFe<sub>0.5</sub>Mn<sub>0.5</sub>PO<sub>4</sub>/C composites were successfully synthesized via a combined coprecipitation and carbothermal reduction method, using the leachate derived from low-grade pyrolusite as both low-cost manganese and iron sources. Key synthesis parameters, including precipitation pH value, lithium source dosage, and glucose content, were systematically optimized. The optimal material was obtained under the following conditions: a precipitation pH of 5, a Li-to-precursor molar ratio of 0.95:1, and glucose added at 30 wt% relative to the total mass of Li<sub>2</sub>CO<sub>3</sub> and precursor. As the cathode material for lithium-ion batteries, it delivers a discharge specific capacity of 92.44 mAh g<sup>−1</sup> after 100 cycles at 0.2C, and 37.24 mAh g<sup>−1</sup> at a high rate of 5C. This work demonstrates a low-cost route for producing LiFe<sub>0.5</sub>Mn<sub>0.5</sub>PO<sub>4</sub>/C composites and proposes a feasible strategy for the high-value utilization of low-grade pyrolusite.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119890"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fei Han, Qinan Zhou, Bi Xu, Hongxue Li, Yuanyuan Wang, Haochen Shi
{"title":"Electrochemical performance of Ruddlesden-popper structured cathode material La2NiO4+δ composited with Ce0.85Sm0.15O2-δ electrolyte for solid oxide fuel cells","authors":"Fei Han, Qinan Zhou, Bi Xu, Hongxue Li, Yuanyuan Wang, Haochen Shi","doi":"10.1016/j.jelechem.2026.119918","DOIUrl":"10.1016/j.jelechem.2026.119918","url":null,"abstract":"<div><div>To optimize the thermal matching property between the cathode and the electrolyte of solid oxide fuel cells (SOFCs), a series of La<sub>2</sub>NiO<sub>4+δ</sub>-xCe<sub>0.85</sub>Sm<sub>0.15</sub>O<sub>2-δ</sub> (LNO-xSDC, x = 0–30 wt%) composites were fabricated. The results show that the chemical compatibility of the composite sample is excellent. EPR and TG analyses reveal that the 20 wt% SDC sample exhibits the highest oxygen vacancy concentration. There is an excess of oxygen, namely interstitial oxygen, in the LNO lattice. Therefore, the oxygen vacancies in LNO are the result of the combined effect of interstitial oxygen release and lattice oxygen release. The oxygen vacancies in SDC originate from the release of lattice oxygen. The combined effect of the two factors resulted in the 20 wt% SDC sample having the highest oxygen vacancy concentration. Additionally, increasing SDC content brings the thermal expansion coefficient (TEC) of cathode closer to that of the electrolyte. And, the LNO-20SDC composite possesses the highest porosity, the largest specific surface area and smallest particle size, which expands the triple-phase boundaries (TPBs) region and provides more active sites for the oxygen reduction reaction (ORR). Therefore, the composite accelerates the process of diffusion of adsorbed oxygen toward TPBs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119918"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Donghyeon Lee , Hossein Fattahimoghaddam , Sejune Jeon , Yong-Wook Jeong , Tae Kyu An , Yong Jin Jeong
{"title":"Direct growth of nickel selenide nanostructures on nickel foam: A self-supported electrode with superior bifunctional activity for (saline) alkaline water electrolysis","authors":"Donghyeon Lee , Hossein Fattahimoghaddam , Sejune Jeon , Yong-Wook Jeong , Tae Kyu An , Yong Jin Jeong","doi":"10.1016/j.jelechem.2026.119928","DOIUrl":"10.1016/j.jelechem.2026.119928","url":null,"abstract":"<div><div>A binder-free Ni<sub>0.95</sub>Se-based electrode was fabricated via direct hydrothermal growth on nickel foam (NF), leveraging NF as both Ni source and conductive substrate. Comprehensive characterizations confirmed the formation of crystalline Ni<sub>0.95</sub>Se nanoassemblies with homogeneous Ni/Se distribution. Electrochemical evaluation in 1 M KOH revealed exceptional bifunctional performance with overpotentials of 215 mV (OER) and 64 mV (HER) at 10 mA cm<sup>−2</sup>, Tafel slopes of 63 mV dec<sup>−1</sup> (OER) and 88 mV dec<sup>−1</sup> (HER), and electrochemical double-layer capacitance of 5.18 mF cm<sup>−2</sup> (vs. 1.89 mF cm<sup>−2</sup> for NF). A two-electrode electrolyzer (Ni<sub>0.95</sub>Se/NF || Ni<sub>0.95</sub>Se/NF) achieved 10 mA cm<sup>−2</sup> at 1.64 V, maintaining stability over 24 h with no phase degradation or morphological collapse. Further, the performance of the electrode remained robust in saline-alkaline electrolyte. Post-OER analysis showed surface reconstruction of Ni<sub>0.95</sub>Se to NiOOH active phase, while HER preserved the Ni<sub>0.95</sub>Se phase. This work highlights Ni<sub>0.95</sub>Se/NF as a durable, cost-effective alternative to precious-metal catalysts, offering insights into the design of transition metal selenide-based electrodes for scalable (saline) water splitting technologies.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119928"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multi-phase heterostructure of NiCoP/WP/Co2P4O12 for promoted alkaline hydrogen evolution activity","authors":"Liangjun Song, Ruiqian Li, Zhengye Yang, Zixian Zhu, Baorui Yuan, Tiancheng Ni, Cancan Chen, Huizhu Yu, Rencheng Jin","doi":"10.1016/j.jelechem.2026.119911","DOIUrl":"10.1016/j.jelechem.2026.119911","url":null,"abstract":"<div><div>Developing economical electrocatalysts for hydrogen evolution in alkaline electrolyte, which holds rapid kinetics and long-term durability, still remains a significant challenge. Herein, an original multi-phase heterostructure of NiCoP/WP/Co<sub>2</sub>P<sub>4</sub>O<sub>12</sub> derived from layered double hydroxide (LDH) was synthesized through hydrothermal reaction followed by phosphation treatment. It possesses a hollow nanoflower morphology and a large specific surface area, thereby leading to the exposure of abundant active sites. More importantly, three crystalline phases and amorphous state are present in the NiCoP/WP/Co<sub>2</sub>P<sub>4</sub>O<sub>12</sub> catalyst, which endows it with remarkable hydrogen evolution reaction (HER) catalytic activity. In particular, the HER performance of NiCoP/WP/Co<sub>2</sub>P<sub>4</sub>O<sub>12</sub> exhibits low overpotentials of 105 and 133 mV at current density of 50 and 100 mA cm<sup>−2</sup> in alkaline electrolyte, respectively, which are lower than that of most reported transition-metal catalysts. Fast reaction kinetics-mediated by NiCoP/WP/Co<sub>2</sub>P<sub>4</sub>O<sub>12</sub> were achieved with the low Tafel slope of 62.5 mV dec<sup>−1</sup>. Furthermore, the multi-phase heterostructured NiCoP/WP/Co<sub>2</sub>P<sub>4</sub>O<sub>12</sub> shows outstanding stability, as demonstrated by electrochemical cycling tests (10,000 cycles) and a prolonged chronoamperometric test lasting 83 h. This work not only sheds new light on the HER mechanism of heterostructured electrocatalysts, but also paves the way for the rational design of non-precious and earth-rich electrocatalysts with remarkable HER catalytic activity for practical applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119911"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tianhong Zhou , Lu Lian , Miao Wang , Rui Min , Jianyun Wu , Huijuan Xin , Kai Ma
{"title":"Degradation characteristics of ammonia nitrogen by MnOx modified foam carbon composite particle electrodes","authors":"Tianhong Zhou , Lu Lian , Miao Wang , Rui Min , Jianyun Wu , Huijuan Xin , Kai Ma","doi":"10.1016/j.jelechem.2026.119921","DOIUrl":"10.1016/j.jelechem.2026.119921","url":null,"abstract":"<div><div>To address the performance limitations of traditional water treatment technologies under low-electrolyte conditions typical of alpine regions, this study investigates a three-dimensional electrocatalytic approach. We designed and fabricated a composite particle electrode comprising manganese oxide-modified foam carbon (FC@α-MnO₂). By uniformly dispersing Mn species throughout the foam carbon matrix, the material integrates a three-dimensional mesoporous conductive network with highly active Mn<sup>3+</sup>/oxygen vacancy sites. This architecture significantly increases the specific surface area and provides abundant active sites for electrocatalytic oxidation. The synergy between the mixed-valence Mn<sup>3+</sup> species and oxygen vacancies is identified as the key driver for free-radical generation and subsequent ammonia nitrogen removal. Experimental results indicate that the composite particle electrode achieves near-complete removal of low-concentration ammonia nitrogen (2 mg L<sup>−1</sup>) within 8 min at a current density of 2.25 mA cm<sup>−2</sup>. Furthermore, the material demonstrates superior redox performance and catalytic activity under low-electrolyte conditions, effectively mitigating issues of poor charge-transfer efficiency and catalytic inertia common in high-altitude, cold environments. Consequently, this work provides a novel strategy for developing high-performance, non-noble-metal three-dimensional composite particle electrodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119921"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jayaprakash Meena , K. Santhakumar , Annamalai Senthil Kumar
{"title":"In-situ functionalization of carbon nanomaterials with coffee-extract derived chlorogenic acid: Electrocatalytic dopamine oxidation and molecular insight into coffee–dopamine crosstalk","authors":"Jayaprakash Meena , K. Santhakumar , Annamalai Senthil Kumar","doi":"10.1016/j.jelechem.2026.119880","DOIUrl":"10.1016/j.jelechem.2026.119880","url":null,"abstract":"<div><div>Natural polyphenols, such as chlorogenic acid (CGA), abundantly present in coffee, function as redox modulators that help stabilize dopamine and mitigate oxidative stress. Although coffee consumption has been associated with a reduced risk of Parkinson's disease, the direct redox interaction between CGA and dopamine remains poorly understood. In this work, we report a one-step electrochemical fabrication of a carbon black–modified glassy carbon electrode functionalized with coffee-derived chlorogenic acid (GCE/CB@Coffee-CGA) using a coffee–pH 7 phosphate buffer extract precursor, enabling direct investigation of CGA–dopamine redox interactions under physiological conditions. Comprehensive characterization using TEM, FESEM, Raman, IR, UV–Vis, HPTLC, UPLC, and SECM analyses confirmed selective anchoring of the redox-active CGA molecular aggregates on the carbon black surface. The modified electrode exhibited good electrochemical and operational stability, maintaining its redox activity over repeated cycling (up to 100 cycles) and prolonged operation, while retaining ∼55% of its redox peak current after 15 days. It enabled controlled dopamine oxidation to dopaquinone and effectively suppressed overoxidation pathways, including polydopamine formation associated with neurotoxic pigment generation. The mediated oxidation process was further extended to amperometric <em>i</em>–t and batch injection analysis modes for selective dopamine detection. The mediated oxidation process enabled sensitive and selective dopamine detection in neutral phosphate buffer, achieving a sensitivity of 2.215 μA μM<sup>−1</sup> (amperometry) and 0.215 μA μM<sup>−1</sup> (batch injection analysis), with a limit of detection of 302 nM (S/N = 3). These results underscore the biochemical relevance of coffee polyphenols in modulating dopamine redox chemistry and provide a mechanistic insight into their neuroprotective potential in dopaminergic disorders such as Parkinson's disease.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119880"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Poonam Singh , P. Maneesha , Manju Kumari , Abdelkrim Mekki , Khalil Harrabi , Somaditya Sen
{"title":"Correlation of the role of Li-doping in control of O-vacancies and Li-interstitial formations in NiO with electrochemical properties","authors":"Poonam Singh , P. Maneesha , Manju Kumari , Abdelkrim Mekki , Khalil Harrabi , Somaditya Sen","doi":"10.1016/j.jelechem.2026.119883","DOIUrl":"10.1016/j.jelechem.2026.119883","url":null,"abstract":"<div><div>Monovalent doping in a divalent cationic oxide material like NiO introduces modifications in the cationic valence state of the lattice and differences in the ionic radii of the cationic site. Such modifications introduce changes in the oxygen lattice and can introduce interstitial cationic sites, thereby increasing the strain and disorder in the lattice and modifying the bond lengths, leading to changes in the electronic, transport, and capacitive properties, which results in modifications in the charge storage properties. Monovalent Li<sup>+</sup> doping in NiO is commonly noticed in literature. However, an attempt to correlate the defect formation and associated changes in structural, vibrational, and electronic properties and thereby correlate these to the charge storage properties has not been made. In a first-of-its-kind report, this work reveals that the charge storage properties improve until 3% Li<sup>+</sup> substitution and thereafter decrease for 6%. The defect study of these materials hints at Li-interstitial being the responsible factor behind such degradation. The connection of oxygen defects, and Ni<sup>2+</sup> to Ni<sup>3+</sup> transformation seems to increase the charge storage.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119883"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Low-temperature-derived carbon framework anchoring MoS2 nanosheets as high-performance anode for sodium-ion batteries","authors":"Yanying Lin , Zenghua Zhao , Jianhua Qian , Chunyang Duan","doi":"10.1016/j.jelechem.2026.119937","DOIUrl":"10.1016/j.jelechem.2026.119937","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) have garnered significant attention for large-scale energy storage applications owing to abundant sodium resources and low cost. High-temperature hard carbons suffer from high energy consumption, while low-temperature (500–800 °C) carbons lack sufficient capacity and cycling stability. To surmount these limitations, this work proposes a strategy of compositing high theoretical capacity molybdenum disulfide (MoS<sub>2</sub>) with low-temperature-derived carbon (prepared via the carbonization of biomass bamboo powder at 600 °C) to synergistically enhance sodium storage performance. A small quantity of MoS<sub>2</sub> nanosheets were in situ grown on its surface through a high-pressure ultrasonic hydrothermal method, constructing a low-temperature carbon-based nanocomposite. Structural characterization demonstrates that the low-temperature carbon possesses abundant defect structures and amorphous characteristics, providing a substrate for the uniform dispersion of MoS<sub>2</sub> nanosheets. Meanwhile, the formation of C<img>S bonds may contribute to interfacial bonding, thereby helping to mitigate the volume expansion and aggregation of MoS<sub>2</sub>. Electrochemically, the optimal composite (74.7% carbon content) retains 308 mAh g<sup>−1</sup> after 100 cycles at 50 mA g<sup>−1</sup> (98.9% retention) and exhibits a slope-region capacity contribution increasing from 64.9% to 84.8% via self-activation. This work demonstrates improved balance between capacity and stability through low-energy synergistic engineering, providing a promising approach for low-cost, high-performance SIB anodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1007 ","pages":"Article 119937"},"PeriodicalIF":4.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}