Journal of Energy Chemistry最新文献

{"title":"Entropy regulation induced hollow prismatic structural NiCoFeInZnV-based layered double hydroxide with prominent electrochemical kinetics and stability for aqueous zinc-ion batteries","authors":"Liu Yang ,&nbsp;Tao Zou ,&nbsp;Haihui Wu ,&nbsp;Jiqing Zhang ,&nbsp;Xuekun Sui ,&nbsp;Wenjing Zhang ,&nbsp;Ende Feng ,&nbsp;Xiaohui Guan ,&nbsp;Bao Liu ,&nbsp;Jingru Bai ,&nbsp;Penggang Yin ,&nbsp;Guangsheng Wang","doi":"10.1016/j.jechem.2025.08.054","DOIUrl":"10.1016/j.jechem.2025.08.054","url":null,"abstract":"<div><div>Layered double hydroxides (LDHs) hold great promise as cathode materials for aqueous zinc-ion batteries (AZIBs). Nevertheless, they also face challenges of sluggish kinetics and rapid capacity loss. Herein, a conformational entropy regulation strategy has been applied to surmount the shortcomings. A medium-entropy iron-based metal organic framework (MIL-88) derived NiCoFeInZnV-based layered double hydroxide with carbon loaded (ME-NiCoFeInZnV-LDH/C) has been first proposed and prepared with a designed method. The increased entropy optimizes electron conductivity and alleviates structure alteration and diffusion barrier during interactions with charge carriers, due to electron-induced effect and “cocktail” effect. Moreover, the nanosheet assembled hollow prismatic structures could homogenize flux distribution and electric field distribution. Therefore, the electrochemical kinetics, crystal structure stability, and activity could be dramatically improved. Leveraging the advantages of structure and composition regulation, Zn||ME-NiCoFeInZnV-LDH/C zinc battery delivers high specific capacities, rate performance, and cycling stability. This work proposes a novel and feasible medium-entropy strategy to prepare a high-performance cathode for advanced AZIBs, which is of prominent significance for the development of charge storage devices.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 274-283"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational screening for novel solid-state electrolytes in Li3MX6 composition","authors":"Olgert L. Dallakyan ,&nbsp;Alexey P. Maltsev ,&nbsp;Ilya V. Chepkasov ,&nbsp;Misha A. Aghamalyan ,&nbsp;Areg A. Hunanyan ,&nbsp;Nane Z. Petrosyan ,&nbsp;Mikayel S. Chobanyan ,&nbsp;Mikayel T. Sahakyan ,&nbsp;Luiza G. Khachatryan ,&nbsp;Artem R. Oganov ,&nbsp;Hayk A. Zakaryan","doi":"10.1016/j.jechem.2025.08.047","DOIUrl":"10.1016/j.jechem.2025.08.047","url":null,"abstract":"<div><div>Halide solid-state electrolytes have gained significant attention in recent years due to their high ionic conductivity, making them promising candidates for future all-solid-state batteries. Recent studies have identified numerous crystal structures with the <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>3</mn></msub><mi>M</mi><msub><mi>X</mi><mn>6</mn></msub></mrow></math></span> composition, although many remain unexplored across various chemical systems. In this research, we developed a comprehensive method to examine all conceivable space groups and structures within the <span><math><mrow><mi>L</mi><mi>i</mi><mo>-</mo><mi>M</mi><mo>-</mo><mi>X</mi></mrow></math></span> system, where M includes In, Ga, and La, and X includes F, Cl, Br, and I. Our findings revealed two metastable structures: <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>3</mn></msub><mi>I</mi><mi>n</mi><msub><mi>F</mi><mn>6</mn></msub></mrow></math></span> with <span><math><mrow><mi>P</mi><mover><mrow><mn>3</mn></mrow><mrow><mo>¯</mo></mrow></mover><mi>c</mi><mn>1</mn></mrow></math></span> symmetry and <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>3</mn></msub><mi>I</mi><mi>n</mi><msub><mi>I</mi><mn>6</mn></msub></mrow></math></span> with <span><math><mrow><mi>C</mi><mn>2</mn><mo>/</mo><mi>c</mi></mrow></math></span> symmetry, exhibiting ionic conductivities of 0.55 and 2.18 mS/cm at 300 K, respectively. Notably, the trigonal symmetry of <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>3</mn></msub><mi>I</mi><mi>n</mi><msub><mi>F</mi><mn>6</mn></msub></mrow></math></span> demonstrates that high ionic conductivities are not limited to monoclinic structures but can also be achieved with trigonal symmetries. The electrochemical stability windows, mechanical properties, and reaction energies of these materials with known cathodes suggest their potential for use in all-solid-state batteries. Additionally, we predicted the stability of novel materials, including <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>5</mn></msub><mi>I</mi><mi>n</mi><mi>C</mi><msub><mi>l</mi><mn>8</mn></msub></mrow></math></span>, <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>5</mn></msub><mi>I</mi><mi>n</mi><mi>B</mi><msub><mi>r</mi><mn>8</mn></msub></mrow></math></span>, <span><math><mrow><mi>L</mi><msub><mi>i</mi><mn>5</mn></msub><mi>I</mi><mi>n</mi><msub><mi>I</mi><mn>8</mn></msub></mrow></math></span>, <span><math><mrow><mi>L</mi><mi>i</mi><mi>I</mi><msub><mi>n</mi><mn>2</mn></msub><mi>C</mi><msub><mi>l</mi><mn>9</mn></msub></mrow></math></span>, <span><math><mrow><mi>L</mi><mi>i</mi><mi>I</mi><msub><mi>n</mi><mn>2</mn></msub><mi>B</mi><msub><mi>r</mi><mn>9</mn></msub></mrow></math></span>, and <span><math><mrow><mi>L</mi><mi>i</mi><mi>I</mi><msub><mi>n</mi><mn>2</mn></msub><msub><mi>I</mi><mn>9</mn></msub></mrow></math></span>.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 495-504"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"p-d orbital hybridization enhanced MOF-on-MOF derived CoP/Fe2P bimetallic phosphide electrocatalyst for stable water electrolysis","authors":"Enhong Liu ,&nbsp;Yunqiao Guo ,&nbsp;Jiayang Zhao ,&nbsp;Haotian Zhang ,&nbsp;Yongjian Zhao ,&nbsp;Pengfei Yuan ,&nbsp;Rui Song","doi":"10.1016/j.jechem.2025.08.044","DOIUrl":"10.1016/j.jechem.2025.08.044","url":null,"abstract":"<div><div>The design and fabrication of ordered epitaxial MOF-on-MOF heterostructures as highly efficient electrocatalysts for water splitting is crucial but still challenging. In this study, a simple coordination-driven self-assembly method is used to fabricate controllable MOF-on-MOF multiscale heterostructures, where triangular host MOF (ZIF-67) nanosheets undergo in situ epitaxial growth to form uniform orthogonal guest MOF (CoFe PBA) nanosheets. Phosphorus (P) is further introduced in situ to fabricate CoP and Fe₂P heterostructured nanosheets (CoFe-P-NS), which exhibit excellent bifunctional electrocatalytic performance due to the enhancement of intrinsic electrocatalytic activity by <em>p-d</em> orbital hybridization. Specifically, the CoFe-P-NS requires low overpotential of 259 and 307 mV to reach 500 mA cm⁻² for HER and OER, respectively. Remarkably, the assembled electrolysis cell maintained a large current density of 300 mA cm⁻² for over 360 h with negligible voltage increase during alkaline seawater electrolysis. Experiments and theoretical calculations show that the synergistic catalytic activity of bimetallic phosphides arises from <em>p-d</em> orbital hybridization, where the CoP-P sites enhance HER by optimizing H* adsorption in the Volmer-Heyrovsky steps, while the Fe₂P-Fe sites accelerate OER by lowering the energy barrier of the rate-determining step from O* to OOH*. This study provides valuable insights into the design of a controllable MOF-on-MOF-based electrocatalyst toward alkaline seawater splitting.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 198-207"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intercalation-enabled bonding design for La2Bi4Cu2Se2Te2O6 with high thermoelectric performance","authors":"Pengfei Zhang ,&nbsp;Yufei Meng ,&nbsp;Shulin Bai ,&nbsp;Da Wan ,&nbsp;Peng Ai ,&nbsp;Zhiwei Zhang ,&nbsp;Yunzhuo Zhang ,&nbsp;Zhanpeng Xu ,&nbsp;Yujie Bao ,&nbsp;Shuwei Tang","doi":"10.1016/j.jechem.2025.08.052","DOIUrl":"10.1016/j.jechem.2025.08.052","url":null,"abstract":"","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 243-250"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defect-engineered gradient reconstruction for the upcycling of spent LiFePO4 to generate high-value LiFe1−xMnxPO4/C cathodes","authors":"Shuaijing Ji ,&nbsp;Yanqiong Tan ,&nbsp;Junwei Wang ,&nbsp;Fengqian Wang ,&nbsp;Danpeng Cheng ,&nbsp;Zhenxing Wang ,&nbsp;Zhongwen Ouyang ,&nbsp;Shun Tang ,&nbsp;Yuancheng Cao","doi":"10.1016/j.jechem.2025.08.048","DOIUrl":"10.1016/j.jechem.2025.08.048","url":null,"abstract":"<div><div>Recycling spent lithium-ion (Li⁺) batteries is critical for achieving environmental conservation and the strategic recovery of essential resources. Compared with conventional methods for recovering cathode materials, which are energy-intensive and prone to secondary pollution, the direct regeneration approach has emerged as a rapid and highly efficient method, gaining widespread attention in recent years. However, this approach faces major challenges, including degraded electrochemical performances and limited economic value. This study, therefore, proposes a high-value direct regeneration strategy to convert degraded spent LiFePO₄ (S-LFP) into a gradient manganese (Mn)-doped regenerated LiFe_0.7Mn_0.3PO₄/C (R-LFMP) composite. This method leverages the inherent microcracks and Li vacancies present in S-LFP, likely acting as diffusion channels for the Mn²⁺/Li⁺ ions. Through a two-step mechanochemical ball-milling and carbothermal reduction process, this approach achieves simultaneous Li replenishment and surface-localised Mn gradient doping with enhanced structural control. Notably, the R-LFMP exhibits an exceptional electrochemical performance. At 0.1 C, it delivers a discharge capacity of 161.4 mA h g⁻¹ and an energy density of 563.5 Wh kg⁻¹ (representing a 60.5 % improvement over S-LFP). Additionally, it maintains 83 % capacity retention after 900 cycles at 0.5C, a considerable enhancement compared to commercial LFMP (62 %). Furthermore, the regenerated cathode material generates a net profit of $7.102 kg⁻¹, surpassing the profitability of conventional recycling methods by 90 %. Overall, this study introduces a transformative and sustainable LFP regeneration technology, achieving breakthroughs in electrochemical restoration and high-value recycling, while paving the way for the closed-loop utilisation of LFP-based energy storage systems.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 306-316"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ru-exsolved RCO-NVG heterojunction via plasma synthesis: An integrated bifunctional cathode for high-performance flexible zinc-air batteries","authors":"Wenyu Zhang ,&nbsp;Nan Zhang ,&nbsp;Ling Zhao ,&nbsp;Yansheng Gong ,&nbsp;Rui Wang ,&nbsp;Jun Jin ,&nbsp;Huanwen Wang ,&nbsp;Beibei He","doi":"10.1016/j.jechem.2025.08.046","DOIUrl":"10.1016/j.jechem.2025.08.046","url":null,"abstract":"<div><div>Zinc-air batteries (ZABs) are promising candidates for flexible electronics due to their high energy density and low cost. However, their development is hindered by the sluggish kinetics of the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Herein, we present a novel heterostructured electrocatalyst composed of vertically aligned N-doped graphene (NVG) arrays anchored on Ru-doped ceria (RCO) nanofibers, synthesized via a one-step plasma-enhanced chemical vapor deposition process. Notably, during the plasma-enhanced driven NVG growth, Ru nanoparticles are spontaneously in-situ exsolved from the RCO lattice, forming a unique Ru@RCO-NVG heterostructure. Density functional theory calculations reveal that the Ru@RCO-NVG heterojunction induces interfacial electronic redistribution, thereby significantly lowering the energy barriers for both OER and ORR. Benefiting from the synergistic effects, the Ru@RCO-NVG catalyst exhibits exceptional intrinsic activity towards OER/ORR (an overpotential of 370 mV for OER at 10 mA cm⁻² and a half-wave potential of 0.86 V for ORR), and higher all-solid-state flexible ZAB performance (peak power density of 286.1 mW cm⁻²), surpassing commercial Pt/C-IrO₂ catalysts. This work not only advances the integration of synergistic graphene/ceria composites but also offers a promising strategy for designing efficient electrocatalysts for next-generation energy conversion technologies.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 219-228"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight into plasma-catalytic CO2 methanation mechanism at Ni-Ov-Ni and basic sites in NaF-modified Ni/La2O3 catalysts with excellent activity","authors":"Cenxin Ma ,&nbsp;Jin Zhang ,&nbsp;Ke Yin ,&nbsp;Ziwei Wang ,&nbsp;Daiqi Ye","doi":"10.1016/j.jechem.2025.08.055","DOIUrl":"10.1016/j.jechem.2025.08.055","url":null,"abstract":"<div><div>Large-scale CO₂ emissions have exacerbated the greenhouse effect, reinforcing the critical need for efficient CO₂ mitigation methods. Plasma-catalytic technology enables CO₂ conversion under mild conditions, especially for CO₂ methanation (the Sabatier reaction), which has attracted significant attention due to its economic benefits and the potential for safe energy transportation via existing natural gas pipelines. The development of high-performance CO₂ methanation catalysts remains an ongoing and long-term objective, and there is a lack of adequate in-situ characterization techniques to investigate the mechanisms. This study focuses on the Ni/La₂O₃ (LN) catalyst and introduces two CO₂ activation strategies through F and Na modifications: the Ni-O_v-Ni site activation with electron transfer from Ni⁰ under low-power conditions and basic site activation under high-power conditions. The LN-NaF catalysts enhance CO₂ methanation activity across the entire power range compared to LN, achieving a CO₂ conversion of 86.3 % and CH₄ selectivity of 99.4 %. Additionally, LN-F(h) reaches a CH₄ yield 4.15 times higher than that of LN at low power. Furthermore, in-situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy with a self-made reactor are performed under plasma-catalytic conditions to reveal the CO₂ adsorption and conversion mechanisms, indicating that different dopants (F, Na, and NaF) exhibit promoting effects on different intermediates, resulting in variations in CO₂ methanation activity. This study provides valuable insights for improving catalyst performance and a thorough comprehension of mechanisms in CO₂ methanation.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 170-182"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical design rules for the reconstruction of transition metal sulfides during oxygen evolution reactions","authors":"Wanying Wang ,&nbsp;Qingyu Shan ,&nbsp;Jinchao Xu ,&nbsp;Huan Li ,&nbsp;Yumin Wang ,&nbsp;Ruiting Hao ,&nbsp;Xiang Wan ,&nbsp;Chunning Zhao ,&nbsp;Weichao Wang","doi":"10.1016/j.jechem.2025.08.049","DOIUrl":"10.1016/j.jechem.2025.08.049","url":null,"abstract":"<div><div>During the oxygen evolution reaction (OER), reconstruction of transition metal sulfides (TMSs) is inevitable. However, the lack of a clear theoretical understanding of this process has impeded the development of effective reconstruction regulation strategies. In this study, we first explored the reconstruction mechanism of CoS₂ during OER from the perspective of electronic structure and identified two possible pathways: the OH-assisted mechanism and the O-assisted mechanism. Further verification showed that these mechanisms are universally applicable to other TMSs (e.g., FeS₂). Based on the reconstruction mechanism, we investigated the basic reasons for the influence of various regulation strategies, such as vacancy modification and facet engineering, on the reconstruction ability. This verified that the method of analyzing the change in the reconstruction ability of catalysts based on the reconstruction mechanism has a high degree of applicability. Importantly, we proposed a core regulation strategy: the coordination symmetry regulation strategy. Specifically, by breaking the symmetry of the surface coordination environment of TMSs (such as introducing heteroatom doping or strain), the reconstruction process will be facilitated. Our findings provide a comprehensive mechanistic explanation for the reconstruction of TMS catalysts and offer a new idea for the rational design of OER catalysts with controllable reconstruction capacity.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 317-328"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface-immobilized cross-linking tetraalkylammonium cations networks mitigate hydrogen evolution for pure acidic CO2 reduction in proton-exchange membrane electrolyzers","authors":"Min Zhang ,&nbsp;Zengyi Tan ,&nbsp;Mufan Xing ,&nbsp;Yang Wang ,&nbsp;Xun Zhu ,&nbsp;Qian Fu","doi":"10.1016/j.jechem.2025.08.050","DOIUrl":"10.1016/j.jechem.2025.08.050","url":null,"abstract":"<div><div>The scaling-up of electrochemical CO₂ reduction requires circumventing the CO₂ loss as carbonates under alkaline conditions. Zero-gap MEA cell configurations with a proton exchange membrane represent an alternative solution in a pure acidic system, but the catalyst layer in direct contact with the hydrated proton environment usually leads to H₂ evolution dominating. Herein, we show that polydimethyldiallyl-ammonium-chloride-coated Ag (Ag@PDDA) electrode exhibits outstanding performance with a FE of 86 %, a single-pass conversion of 72 %, and a stability of 28 h for CO production in pure-acid MEA compared with ammonium poly(N-methyl-piperidine-co-pterphenyl) decorated Ag (Ag/QAPPT) and cetyltrimethylammonium bromide decorated Ag (Ag/CTAB). The in situ ATR-SEIRAS reveal that PDDA creates a positive charge-rich protective outer layer and an N-rich hybrid inner layer, which not only suppresses the migration of H⁺ during the electrolysis process and blocks the direct contact between H₂O and Ag catalyst, but also promotes the generation from CO₂ to *COOH in a pure-acid system. This work highlights the importance of polyelectrolyte engineering in regulating the electrocatalytic interface and accelerates the development of proton exchange membrane CO₂ electrolysis.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 90-96"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Joule heating activation-assisted full-depth doping enabling fast-kinetic and stable micro silicon anodes in solid-state batteries","authors":"Xin Qin ,&nbsp;Zuqiang Ge ,&nbsp;Yafei Wang ,&nbsp;Guanzhong Ma ,&nbsp;Fei Yang ,&nbsp;Qian Xu ,&nbsp;Yanpeng Li ,&nbsp;Debin Kong ,&nbsp;Junwei Han ,&nbsp;Linjie Zhi","doi":"10.1016/j.jechem.2025.08.051","DOIUrl":"10.1016/j.jechem.2025.08.051","url":null,"abstract":"<div><div>Micro silicon (mSi) is a promising anode candidate for all-solid-state batteries due to its high specific capacity, low side reactions, and high tap density. However, silicon suffers from its poor electronic and ionic conductivity, which is particularly severe on a micro scale and in solid-state systems, leading to increased polarization and inferior electrochemical performance. Doping can broaden the transmission pathways and reduce the diffusion energy barrier for electrons and lithium ions. However, achieving effective, uniform doping in mSi is challenging due to its longer diffusion paths and higher energy barriers. Therefore, current doping research is primarily limited to nanosilicon. In this study, we successfully used a Joule-heating activated staged thermal treatment to achieve full-depth doping of germanium (Ge) in the mSi substrate. The Joule-heating process activated the mSi substrate, resulting in abundant vacancy defects that reduced the diffusion barrier of Ge into the silicon lattice and facilitated full-depth Ge doping. Surprisingly, the resulting Si-Ge anode exhibited significantly enhanced electrical conductivity (70 times). Meanwhile, the improved Li-ion conductivity in mSi and the reduced Young’s modulus enhance the electrode reaction kinetics and integrity after cycling. Ge-doped silicon anodes demonstrate excellent electrochemical performance when applied in sulfide solid-state half-cells and full-cells. This work provides substantial insights into the rational structural design of mSi alloyed anode materials, paving the way for the development of high-performance solid-state Li-ion batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 208-218"},"PeriodicalIF":14.9,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}