Rare Metals最新文献

{"title":"Unveiling micromechanism of Fe minor addition-induced property degradation of an Al-5.1Cu-0.65 Mg-0.8Mn (wt%) alloy","authors":"Xin-Jian Chen,&nbsp;Bin Wang,&nbsp;Zhen Wang,&nbsp;De-Yu Zhang,&nbsp;Hong Wang,&nbsp;Jia-Hai Li,&nbsp;Jin Wu,&nbsp;Jun-Fen Zhao,&nbsp;Xi-Zhou Kai,&nbsp;Man-Ping Liu,&nbsp;Yu-Tao Zhao,&nbsp;Shi-Hao Wang,&nbsp;Shuang-Bao Wang","doi":"10.1007/s12598-024-03175-w","DOIUrl":"10.1007/s12598-024-03175-w","url":null,"abstract":"<div><p>In this paper, the property degradation micromechanism of Al-5.10Cu-0.65 Mg-0.8Mn (wt%) alloy induced by 0.5 wt% Fe minor addition was revealed by atomic-scale scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy coupled with first-principles calculations. The results show that the Fe minor addition to the Al-Cu-Mg-Mn alloy leads to a slight reduction of grain size and the formation of coarse Al₇Cu₂Fe constituent particles. Fe tends to segregate into the T-phase dispersoids, θ'-, and S-phase precipitates by preferentially occupying Cu or Mn sites in these phase structures. The apparent Fe segregation contributes to an increase in stiffness of the T-phase and S-phase but decreased stiffness of the θ' phase. Formation of the coarse Al₇Cu₂Fe constituent particles and decreased stiffness of main precipitates θ' containing Fe result in the degraded strength of the Al-Cu-Mg-Mn-Fe alloy. Further study reveals that corrosion resistance degradation of the Al-Cu-Mg-Mn-Fe alloy is associated with the increased width of precipitation free zones and consecutive grain boundary precipitates. The obtained results have significant implications for the usage of recycled Al alloys and the potential design strategies of high-performance alloys containing Fe.</p><h3>Graphic abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3496 - 3513"},"PeriodicalIF":9.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance Cu–Cu interconnects attained through air sintering of oleylamine-capped Cu nanoparticles for power electronics packaging","authors":"Shi-Yu Xia,&nbsp;Xiang-Ji Li,&nbsp;Ying-Jie Guo,&nbsp;Jun-Jie Yuan,&nbsp;Zhe-Fei Sun,&nbsp;Hui-Jun Cao,&nbsp;Shu-Ye Zhang,&nbsp;Wen-Zhi Cai,&nbsp;Jin-Tang Li,&nbsp;Zhi-Hao Zhang","doi":"10.1007/s12598-024-03076-y","DOIUrl":"10.1007/s12598-024-03076-y","url":null,"abstract":"<div><p>Cu nanoparticles exhibit excellent properties as high-temperature-resistant, conductive, heat-dissipating, and connecting materials. However, their susceptibility to oxidation poses a major challenge to the production of high-quality sintered bodies in the air, severely limiting their widespread adoption in power electronics packaging. This study presents a novel approach to the synthesis of Cu nanoparticles capped with oleylamine ligands. By employing a simple solvent-cleaning process, effective control of the density of oleylamine ligands on particle surfaces was achieved, resulting in high-performance Cu nanoparticles with both oxidation resistance and air-sintering susceptibility. Moreover, through our research, the solvent-cleaning mechanism was clarified, a model for the oleylamine ligand decomposition was developed, the air-sintering behavior of Cu nanoparticles was analyzed, and the impacts of both the sintered bodies and interfaces on the sintering performance were explained. Additionally, Cu nanoparticles subjected to 5 cleaning rounds followed by sintering at 280 °C and 5 MPa in air were confirmed to be able to produce the highest shear strength (49.2 ± 3.51 MPa) and lowest resistivity (6.15 ± 0.32 μΩ·cm). Based on these results, flexible capacitive pressure sensors with Cu sintered electrodes were fabricated and demonstrated a stable pressure–capacitance response over the temperature range of 25–250 °C. These findings underscore the impressive robustness and durability of sintered structures and the potential for high-temperature applications of oleylamine-capped Cu nanoparticles. Our study provides reliable application demonstrations for the low-cost manufacture of high-performance power electronics packaging structures that can operate in high-current–density, high-heat-flow-density, high-temperature, and high-stress environments.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3281 - 3298"},"PeriodicalIF":9.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimony nanoparticles encapsulated in three-dimensional porous carbon frameworks for high-performance rechargeable batteries","authors":"An-Qi Chen,&nbsp;Si-Guang Guo,&nbsp;Yu Liu,&nbsp;Ling Long,&nbsp;Zhuo Li,&nbsp;Biao Gao,&nbsp;Paul K. Chu,&nbsp;Kai-Fu Huo","doi":"10.1007/s12598-024-03077-x","DOIUrl":"10.1007/s12598-024-03077-x","url":null,"abstract":"<div><p>Antimony (Sb) is regarded as a potential candidate for next-generation anode materials for rechargeable batteries because it has a high theoretical specific capacity, excellent conductivity and appropriate reaction potential. However, Sb-based anodes suffer from severe volume expansion of &gt; 135% during the lithiation–delithiation process. Hence, we construct a novel Sb@C composite encapsulating the Sb nanoparticles into highly conductive three-dimensional porous carbon frameworks via the one-step magnesiothermic reduction (MR). The porous carbon provides buffer spaces to accommodate the volume expansion of Sb. Meanwhile, the three-dimensional (3D) interconnected carbon frameworks shorten the ion/electron transport pathway and inhibit the overgrowth of unstable solid-electrolyte interfaces (SEIs). Consequently, the 3D Sb@C composite displays remarkable electrochemical performance, including a high average Coulombic efficiency (CE) of &gt; 99%, high initial capability of 989 mAh·g⁻¹, excellent cycling stability for over 1000 cycles at a high current density of 5 A·g⁻¹. Furthermore, employing a similar approach, this 3D Sb@C design paradigm holds promise for broader applications across fast-charging and ultralong-life battery systems beyond Li⁺. This work aims to advance practical applications for Sb-based anodes in next-generation batteries.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3026 - 3036"},"PeriodicalIF":9.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combination of cryogenic and pulsed electric field treatment for enhanced microstructure and mechanical properties of WC–Co cemented carbides","authors":"Ming-Yuan Ma,&nbsp;Song-Han Hu,&nbsp;Ying-Chun Diao,&nbsp;Kai Wang,&nbsp;Guo-Jian Li,&nbsp;Wang-Zhong Mu,&nbsp;Qiang Wang","doi":"10.1007/s12598-024-03161-2","DOIUrl":"10.1007/s12598-024-03161-2","url":null,"abstract":"<div><p>In this work, we aim to develop a novel post-treatment process combining cryogenic and pulsed electric field treatment to enhance WC–Co cemented carbides. The results show a 15.62% increase in hardness from 1831.38 to 2117.38 HV₃₀, a 9.60% rise in fracture toughness from 9.06 to 9.93 MPa·m^1/2, while the friction coefficient decreases from 0.63 to 0.47. Through the residual stress evolution, WC orientation change and the martensitic transformation of Co, and the internal enhancement mechanism of cryogenic combined with pulsed electric field treatment are revealed. The electron wind generated by the pulsed electric field can efficiently reduce the residual stress induced by cryogenic process. The evolution of residual stress promotes the base slip of WC, increasing the degree of {0001} orientation. In addition, the degree of martensitic transformation of Co intensifies, with the hcp-Co/fcc-Co ratio rising from 0.41% to 17.86%. The enhanced WC {0001} orientation and increased hcp-Co content contribute to significant improvements in hardness and wear resistance. This work provides a novel efficient enhancement strategy for ceramics and alloys, with the potential to be a mainstream strengthening method in the future.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3547 - 3561"},"PeriodicalIF":9.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Principles of coordination structure design of single-atom catalysts in electrocatalytic oxygen reduction reaction","authors":"Shi-Hang Zhao,&nbsp;Yuan Pan","doi":"10.1007/s12598-024-03085-x","DOIUrl":"10.1007/s12598-024-03085-x","url":null,"abstract":"<p>Proton exchange membrane fuel cells have been identified as a potentially valuable technology for the efficient conversion of hydrogen energy into electrical energy. Nevertheless, one significant constraint on the performance of fuel cells is the oxygen reduction reaction (ORR). It is meaningful to progress the development of representative ORR electrocatalysts. In recent times, there has been an intensified focus on single-atom catalysts (SACs) due to the advantages of homogeneous distribution and high atom utilization efficiency. In particular, the coordination structure of metal sites plays an important role in the electrochemical performance of SACs. However, the relationship between coordination structures and catalytic performance remains unclear. In this review, we summarized the research progress on SACs in electrocatalytic ORR in recent years. Then the structure–activity relationship in the symmetric and asymmetric coordination structures of SACs was clarified. We further proposed rational design principles for regulating the coordination structure of SACs. Finally, the opportunities and challenges were discussed.</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"2900 - 2920"},"PeriodicalIF":9.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering the diphasic Li-rich Mn-based composite with alleviated Jahn–Teller effect for high-energy Li-ion batteries","authors":"Feng Li,&nbsp;Jia-Cheng Li,&nbsp;Mao-Sheng Gong,&nbsp;Ze-Zhou Lin,&nbsp;Xuan-Ming Chang,&nbsp;Mo-Han Dong,&nbsp;Pei-Yu Hou","doi":"10.1007/s12598-024-03092-y","DOIUrl":"10.1007/s12598-024-03092-y","url":null,"abstract":"<div><p>The unique oxygen stacking sequence of O2-type structures restricts the irreversible transition metal movement into Li vacancies for the delithiated Li-rich layered oxides (LLOs) and maintains outstanding voltage stability. However, the ion-exchange synthesis promotes the Mn-ion valence reduction and aggravates the Jahn–Teller (J–T) distortion alongside disproportionation. Since the main oxidation state of the Mn ions is +4 in the traditional O3-type LLOs, synergistic effects of the O2-type and O3-type structures are expected in the O2/O3 diphasic Li-rich material. Herein, O2/O3 biphasic intergrowth LLOs were rationally designed, and the synergic optimization of the biphasic structure was planned to retard the J–T effect. The O2/O3 intergrowth nature was confirmed, and the percentages of the O2 and O3 phases were 56% and 44%, respectively. Density functional theory calculations demonstrated that the Mn²⁺(EC) sheath had a remarkably lower energy barrier than the Li⁺(EC) sheath. This finding suggests that Mn²⁺ ions that are dissolved into the electrolyte accelerate the electrolyte oxidization, so the deposition of the cathode electrolyte interface for pristine O2-LLOs causes a high electrochemical impedance. The designed O2/O3 biphasic LLOs boost the capacity stability and suppress the voltage drop upon repeated Li⁺ de-intercalation. The phase regulation strategy offers great potential for developing low-cost LLOs with enhanced structural stability for advanced Li-ion batteries.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"2945 - 2957"},"PeriodicalIF":9.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe4N particles embedded in nitrogen-doped electrospun carbon nanofibers as efficient ORR catalysts for zinc-air battery","authors":"Cheng-Xiao Xu,&nbsp;Jin-Jie Zhang,&nbsp;Hong-Rui Dou,&nbsp;Yu-Zheng Li,&nbsp;Da-Ming Li,&nbsp;Ying-Jie Zhang,&nbsp;Bo Liu,&nbsp;Prabha Inbaraj,&nbsp;Pei-Pei Huo","doi":"10.1007/s12598-024-03167-w","DOIUrl":"10.1007/s12598-024-03167-w","url":null,"abstract":"<div><p>The development of efficient, cost-effective catalysts for the oxygen reduction reaction (ORR) is crucial for advancing zinc-air batteries (ZABs). This study presents Fe₄N nanoparticles embedded in N-doped carbon nanofibers (Fe₄N@CNF-NH₃) as a highly efficient ORR catalyst. The Fe₄N@CNF-NH₃ catalyst was synthesized via electrospinning, followed by high-temperature annealing in an NH₃ atmosphere. This electrospinning technique ensured the uniform dispersion of Fe₄N nanoparticles within the carbon nanofibers (CNFs), preventing agglomeration and enhancing the availability of active sites. Structural and morphological analyses confirmed the formation of Fe₄N nanoparticles with a lattice spacing of 0.213 nm, surrounded by graphitic carbon structures that significantly improved the material’s conductivity and stability. Electrochemical tests demonstrated that Fe₄N@CNF-NH₃ exhibited superior ORR activity, with a half-wave potential of 0.904 V, surpassing that of commercial Pt/C catalysts. This enhanced performance is attributed to the synergistic effects of Fe₄N nanoparticles and the conductive carbon framework, which facilitated efficient charge and mass transfer during the ORR process. Density functional theory calculations further revealed that the introduction of CNFs positively shifted the d-band center of Fe atoms, optimizing oxygen intermediate adsorption and lowering energy barriers for ORR. The practical applicability of Fe₄N@CNF-NH₃ was validated through the assembly of both liquid-state and solid-state ZABs, which exhibited excellent cycling stability, high power density, and superior discharge voltage. This study offers a promising strategy for developing highly active, low-cost ORR catalysts and advances the potential for the commercialization of ZABs.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3156 - 3169"},"PeriodicalIF":9.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Serrated flow behavior mediated via nano-twinning and phase transformation in FeCoCrNiMo0.2 high-entropy alloy at cryogenic temperatures","authors":"Fei Chen,&nbsp;Fei Liu,&nbsp;Yuan-Biao Tan,&nbsp;Wei Shi,&nbsp;Xuan-Ming Ji,&nbsp;Hao Fu,&nbsp;Si-Yuan Wei,&nbsp;Song Xiang","doi":"10.1007/s12598-024-03154-1","DOIUrl":"10.1007/s12598-024-03154-1","url":null,"abstract":"<div><p>The serrated flow behavior, known as the Portevin–Le Chatelier (PLC) effect, is commonly observed during high-temperature deformation. In this study, we report a serrated flow behavior in FeCoCrNiMo0.2 high-entropy alloy (HEA), which is mediated by nano-twinning and phase transformation at cryogenic temperatures. During uniaxial tensile deformation at 77 K, the alloy exhibited the formation of high-density deformation nano-twinning, cross-twinning, stacking faults (SFs) and Lomer–Cottrell locks (L-C locks). Additionally, the lower stacking fault energy (SFE) at low temperatures promotes the formation of the 9R phase. The high-density twin boundaries effectively hinder dislocation movement, leading to the instability of plastic deformation and promoting the serrated flow behavior. Furthermore, the rapid and unstable transformation of the 9R phase contributes to the pronounced serrated flow behavior. Nano-twinning, SFs, cross-twinning, L-C locks and 9R phase collectively induce a dynamic Hall–Petch effect, enhancing the strength-ductility synergy and strain-hardening ability of deformed alloy at 77 K. Our work provides valuable insights into the mechanism of tensile deformation at cryogenic temperatures in single-phase FCC HEA.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3447 - 3459"},"PeriodicalIF":9.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuned bi-anisotropy of Y2Co14B nanocrystalline magnetic alloys toward high-frequency applications","authors":"Ling-Feng Wang,&nbsp;Ke-Bing Wang,&nbsp;Qi-Ming Chen,&nbsp;Chen Wu,&nbsp;Xin-Hua Wang,&nbsp;Mi Yan","doi":"10.1007/s12598-024-03104-x","DOIUrl":"10.1007/s12598-024-03104-x","url":null,"abstract":"<div><p>The prevalence of wide-bandgap semiconductors urges the development of advanced soft magnetic materials for high-frequency applications. While soft magnetic alloys are limited by resonances at elevated frequencies, the incorporation of planar anisotropy serves as an effective strategy to overcome this dilemma and extend their potential for high-frequency applications. Herein, nanocrystalline Y₂Co₁₄B alloys have been designed with tuned magnetocrystalline and shape bi-anisotropy via melt spinning and magnetic field-assisted annealing. With the application of zero, transverse, rotational and longitudinal magnetic fields (denoted as ZFA, TFA, RFA and LFA), the effects of field direction and annealing time on microstructural and performance evolution have been investigated. Compared with ZFA, magnetic field-assisted annealing not only promotes the growth of nanograins but also alters the coincidence degree between intrinsic easy-plane (IEP) and artificial easy-plane (AEP) structures. While the random distribution of IEP structure is achieved for the RFA due to the formation of non-orientated nanograins, directional magnetic field-assisted annealing contributes to preferentially orientated (006) nanograins, especially for the LFA, resulting in optimal coincidence between the magnetocrystalline anisotropy and shape anisotropy. Such enhancement facilitates the transformation of magnetic domain structures into in-plane configurations with strip-like features. Consequently, a large ratio between the out-of-plane and in-plane anisotropy (<i>H</i>_out/<i>H</i>_in) and improved softness of the alloy can be achieved, providing valuable references for future fabrication of rare-earth (R) transition-metal (T) alloys with superior easy-plane characteristics.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 2","pages":"1243 - 1255"},"PeriodicalIF":9.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper-substituted P3-type Na0.54Mn0.64Fe0.16Mg0.1Cu0.1O2 cathode material for sodium-ion batteries with enhanced anionic redox reversibility","authors":"Zhe Mei,&nbsp;Xun-Lu Li,&nbsp;Cui Ma,&nbsp;Jie Zeng,&nbsp;Chong-Yu Du,&nbsp;Rui-Jie Luo,&nbsp;Xuan Xu,&nbsp;Zhe Qian,&nbsp;Zi-Ting Zhou,&nbsp;Ya Zhang,&nbsp;Qian Cheng,&nbsp;Yao-Guo Fang,&nbsp;Yong-Ning Zhou","doi":"10.1007/s12598-024-03093-x","DOIUrl":"10.1007/s12598-024-03093-x","url":null,"abstract":"<div><p>P3-type manganese-iron-based cathodes with high specific capacity and abundant resource have attracted considerable attention for sodium-ion batteries. However, the long-term cycle stability of P3-type cathodes is still not satisfactory. In this work, we design a new quaternary manganese-iron-based cathode material (P3-Na_0.54Mn_0.64Fe_0.16Mg_0.1Cu_0.1O₂) by Cu substitution. The strong covalent Cu–O bonds improve the structural stability and the reversibility of O redox during charge and discharge processes. Cu substitution also mitigates the structure change with less unit cell volume variation, and improves the Na-ion transport kinetics effectively. As a result, NMFMC delivers much improved cycling stability and rate capability compared with NMFM. It reveals that the charge compensation of NMFMC is mainly contributed by Mn^3+/4+, Fe^3+/3.5+ and O^2−/− during the charge and discharge processes, and Cu substitution can also enhance the activity and reversibility of Fe redox. This strategy provides a new pathway toward improving the stability and O redox reversibility of P3-type cathode materials for sodium-ion batteries.</p></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"2986 - 2996"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}