JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Binghao Lin,Xu Wu,Xuejie He,Jiaxin Ye,Yuqin Song,Ping Jiang,Linxuan Bai,Xiangyue Liao,Yangjie Li,Yu Huo,Qiaoji Zheng,Heng Zhang,Dunmin Lin
Na 3 V 2 (PO 4 ) 3 (NVP) with typical NASICON structure is highly regarded as one of the most appealing cathodes for sodium-ion batteries (SIBs) for their excellent structural stability; however, the poor electronic conductivity and irreversible phase transition at high voltage (∼4 V) for the material result in poor rate capabilities and significant capacity degradation during electrochemical reactions. Herein, the high-entropy doping strategy of introducing six types of metal ions into the V-sites in Na 3 V 2 (PO 4 ) 3 is used to design a high-performance cathode of Na 3 V 1.73 (Mn, Ca, Mg, Al, Zr) 0.05 Nb 0.02 (PO 4 ) 3 (HE-NVP) for SIBs. After the high-entropy doping, a reversible V 4+ /V 5+ redox pair is activated at high voltage of ∼4 V, which significantly contributes to the enhancement of energy density and operating voltage. Moreover, after high entropy doping, the single solid solution phase transition in high voltage range is induced, effectively improving the material’s structural stability and exhibiting very small volume change of 1.1 % during the Na + extraction/insertion. Based on the unique advantages mentioned above, the high-entropy HE-NVP exhibits a superior discharge capacity of 122.1 mAh g −1 at a current rate of 0.5C and maintains a remarkable capacity retention of 90.1 % after 500 cycles at a rate of 5C. This work provides a useful reference for designing advanced cathodes for SIBs by regulating high entropy doping.
研究领域:
材料科学
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电化学
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储能技术
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电池技术
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yingying Xu,Mengyao Li,Yingjiu Zhang,Hongzhang Song,Haoshan Hao
A series of Bi 2 Sr 2 Co 2 O y (BSCO), Bi 2 (Sr 2/3 Ba 2/3 Ca 2/3 )Co 2 O y (BSBCCO), Bi 1.9 Cu 0.1 (Sr 2/3 Ba 2/3 Ca 2/3 )Co 2 O y (BCSBCCO) and Bi 1.8 Ag 0.2 (Sr 2/3 Ba 2/3 Ca 2/3 )Co 2 O y (BASBCCO) ceramic samples were prepared to optimize the thermoelectric properties of BSCO by high entropy doping combined with Cu/Ag doping. High entropy doping improves the carrier mobility significantly, due to a sintering effect in liquid phase and an additional conduction path. Cu/Ag acceptor doping increases the carrier concentration and Seebeck coefficients. Both them enhance the electrical transport performance of doped samples effectively. Specially, the random distribution of several different cations caused by high entropy doping and Cu/Ag doping can enhance the phonon scattering, which greatly reduces the thermal conductivity of doped samples. Finally, the thermoelectric figure of merit ( ZT ) value of the BASBCCO sample is improved to 0.36 at 923 K on the basis of high entropy doped BSBCCO ( ZT = 0.28 at 923 K), which is twice that of the pristine sample.
研究领域:
材料科学
·
热电材料
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yujue Wang,Yilin Wang,Xianghao Tang,Lei Zhang,Dan Xiao,Xicui Zhang,Qian Zhao
Mn/Fe-based layered oxides are supposed to be suitable as low-cost cathode materials for sodium ion batteries (SIBs) since they are of high specific capacity and wide availability of Mn and Fe sources in nature. However, these materials generally suffer from complex and irreversible phase transitions. The manufacture of high entropy materials can solve these matters. Herein, we rationally design and synthesized high entropy doped P2-Na 0.62 Ca 0.03 Mn 0.58 Fe 0.23 Cu 0.085 Mg 0.01 Ti 0.015 Li 0.08 O 2 (NFM-HEO) material. As cathode for SIB, it exhibits enhanced long cycling stability and better rate capability compared to the undoped P2-Na 0.65 Mn 0.6 Fe 0.4 O 2 material within 2.0 ∼ 4.3 V. After 500 cycles at 1C, the capacity retention rate reaches 85.4 %, and it can provide a reversible specific capacity of 134 mAh g −1 at 0.1C and 70 mAh g −1 at 5C. In-situ XRD, diffusion kinetics results together with microstructure and phase characterization before and after cycling indicate that high entropy doping enhances structural stability of layered oxides, suppresses irreversible phase transitions, stabilizes Na + diffusion paths, ensures reversible anionic redox reactions, inhibits crack generation after cycling, prevents transition metal dissolution, and improves humid air stability. This study is expected to offer guidance for the improvement of structural stability of layered cathode for SIBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Beibei Ma,Yawen Liang,Xiaokai Ma,Wenjie Wang,Chengcheng Miao,Guanqi Yu,Qizhao Wang,Chunyang Xu,Xinwei Cui
The rising demand for cost-effective and safe energy storage systems has ignited strong global interest in advanced cathodes that surpass lithium-ion batteries in practical applications. Herein, we propose a composite material in which five ions, Ti 4+ , Mn 2+ , Fe 2+ , Zr 4+ , and Mo 6+ , are doped into the lattice of Na 3 V 2 (PO 4 ) 3 and a uniform carbon-coating layer is applied to its surface, resulting in the formation of high-entropy doped Na 3 V 2 (PO 4 ) 3 @C materials (HENVP@C). When employed as the cathode material for Sodium-ion batteries (SIBs) and hybrid lithium/sodium-ion batteries (HLSIBs), HENVP@C shows remarkable Li + /Na + storage capabilities. The results of electrochemical performance tests on half-cells reveal that HENVP@C exhibits a high capacity, along with excellent cycle life and stability. High-entropy doping effectively stabilizes the NASICON structure of HENVP@C, enhances ionic conductivity, and optimizes ion diffusion kinetics, particularly improving its dual-ion pseudocapacitive storage capability. In addition, the surface carbon coating improves the electronic conductivity of the material. The insights presented in this work provide new ideas for designing cathode materials for SIBs and HLSIBs.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Yixue Huang,Bao Zhang,Jian zhang,Yongqi Wang,Ling Xia,Mingwu Xiang,Wenchang Han,Jie Li,Ziliang Feng,Yongkang Liu,Enfeng Zhang,Jianguo Duan,Peng Dong,Yingjie Zhang,Yannan Zhang
Owing to its abundant manganese source, high operating voltage, and good ionic diffusivity attributed to its 3D Li-ion diffusion channels. Spinel LiMn 2 O 4 is considered a promising low-cost positive electrode material in the context of reducing scarce elements such as cobalt and nickel from advanced lithium-ion batteries. However, the rapid capacity degradation and inadequate rate capabilities induced by the Jahn–Teller distortion and the manganese dissolution have limited the large-scale adoption of spinel LiMn 2 O 4 for decades. In this study, LiMn 1.98 Mg 0.005 Ti 0.005 Sb 0.005 Ce 0.005 O 4 spinel positive electrode material (HE-LMO) with remarkable interfacial structural and cycling stability is developed based on a complex concentrated doping strategy. The initial discharge capacity and capacity retention of the electrode of HE-LMO are 111.51 mAh g −1 and 90.55% after 500 cycles at 1 C. The as-prepared HE-LMO displays favorable cycling stability, significantly surpassing the pristine sample. Furthermore, theoretical calculations strongly support the above finding. HE-LMO has a higher and more continuous density of states at the Fermi energy level and more robust bonded states of the electrons among the Mn─O atom pairs. This research contributes to the field of high-entropy doping modification and establishes a facile strategy for designing advanced spinel manganese-based lithium-ion batteries (LIBs).
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Tong Gao,Shu-Yu Zhou,Pengpeng Dai,Jidong Song,Junhong Liao,Yuxuan Sun,Chenglong Yu,Shi-Xi Zhao,Guozhong Cao
Single-crystal Ni-rich ternary cathode materials (811), with their comprehensive advantage of high energy density and low manufacturing cost, have been considered the most promising materials for Li-ion batteries. Due to strong O-p/TM-d covalent hybridization, the complete oxidation of Ni ions during electrochemical cycling is often accompanied by inevitable oxygen loss, resulting in an irreversible surface phase transition, accumulated lattice stress, and poor thermal stability. Considering the fact that introducing heteroatoms into traditional doping systems can alter the electron density distribution around coordinated oxygen, compositionally complex systems based on high-entropy doping may have a more significant effect on stabilizing lattice oxygen. Herein, the high-entropy doping strategy was applied to design and synthesize single-crystal NCM811 cathodes (HE811) through the molten salt method. Compared to 811, HE811 cathodes show an excellent initial Coulombic efficiency of 90.74% at 0.2C and deliver a higher capacity retention of 80.79% after 300 cycles at 1C between 2.8 and 4.3 V. Owing to high-entropy doping, the oxygen electron densities around multidopants are increased, inhibiting the excessive oxidation of lattice oxygen and improving the stability of TMO6 coordination structures. This work could provide insights into the high-entropy doping effects in modulating oxygen charge distribution to design high-energy-density Ni-rich ternary cathode materials with long-term cycling.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xiaoyang Zhu,Yang Zhang,Yu Zhang,Panpan Xie,Yunchuan Liu,Wenhui Zhang,Shenao Zhang,Yusen Wang,Guan Wu,Wangyang Lu,Nan Li
Customizing smart clothing for monitoring the physiological and vital sign information in real time has raised demands for wearable sensors with rapid response, good stability, high sensitivity and excellent mechanical properties. Herein, a flexible high-entropy doped oxide Cu 0.9 Fe 0.06 Ni 0.01 Cr 0.01 Co 0.01 Mn 0.01 (HE-Cu 2 O) nanoparticle modified Ti 3 C 2 T x (HECT) fiber was prepared through a facile hydrothermal growth and heat treatment process. Due to rich active sites, high reactivity and large surface area, HE-Cu 2 O appears impressive detection ability, admired adsorption inclination and exceptional reaction kinetics, confirming by DFT calculation. What’s more, the covalent coupling between the Ti 3 C 2 T x conductive frameworks and HE-Cu 2 O nanoparticles can further avoid the negative influence of metal oxide on the electronic conductivity, ensuring fast electron transfer rate. As a result, the HECT fiber can be operated in DA/PBS solution with reliable electrocatalyst properties, including low detection limit (1 μM), rapid response rate (<2 s), remarkable long-term cycling performance (100 cycling) and excellent reproducibility (RSD ≈ 2.01 %). Additionally, when the HECT fiber, matching with the Ag/AgCl electrode and Pt wire, weaves into the garment, the integrated system retains obvious response level, less response time (<5 s) and outstanding electrocatalyst performance under dynamic situations (bending, running, rope skipping and doing yoga), demonstrating a potential in practical application.
研究领域:
材料科学
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生物医学工程
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传感器技术
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产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Xu Junling,Xie Fuqiang,Huang Lipeng,Li Nana,Peng Shang,Ma Wensheng,Zhang Kai,Wu Yanxue,Shao Lianyi,Shi Xiaoyan,Chen Jizhang,Tao Li,Zhang Kai,Zhang Zhonghua,Wang Yonggang,Sun Zhipeng
Doping is an important approach to tailor materials’ properties, yet the success of doping can depend on factors such as ionic radii similarities. For materials like silicon or perovskite, doping is not only facile to implement but can also enhance material properties. However, for host lattice structures like Nb 2 O 5 , doping without causing phase change is challenging. Here, we introduce a high-entropy-doping effect in Nb 2 O 5 . Unlike traditional doping approaches, high-entropy-doping minimizes the chemical properties of doping elements and focuses solely on their quantities. By high-entropizing the doping elements (selecting 10–15 from Mg, Ca, Sr, Ba, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Ga, In, Sn, Sb, Y, Mo, La, Ce) and keeping them within a certain range of doping concentrations (1–3 mol %), a successful high-entropy-doping is achieved for Nb 2 O 5 without phase change. The obtained high-entropy-doped (HED) Nb 2 O 5 exhibits rapid-charging capabilities. At a rate of 40 A g −1 , the HED-Nb 2 O 5 delivers a capacity of 80 mAh g −1 , whereas the undoped Nb 2 O 5 fails to exceed 25 mAh g −1 .
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DOI
PubMed
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Hongwei Bi,Xia Sun,Boyang Zhao,Ruiyi Li,Yongguang Zhang,Xiaoen Wang,Meng Zhang,Dan Luo,Zhongwei Chen
Na-ion layered oxides have attracted considerable interest due to their structural and electrochemical similarities to Li-ion counterparts, positioning them as promising cathode materials for sustainable energy storage. However, O3-type Na-ion layered oxides experience severe structural distortions and phase transitions during electrochemical cycling, which significantly deteriorate battery performance. In this study, an ultra-stable O3-type high-entropy doping cathode material is developed, NaNi 0.3 Mn 0.5 Fe 0.05 Li 0.05 Ti 0.05 Cu 0.05 O 2 (NMFLTC), for high-performance Na-ion battery. By partially substituted Ni of NaNi 0.5 Mn 0.5 O 2 (NM) with Fe, Li, Ti, and Cu, Na + diffusion and maintained the structural integrity of NMFLTC is successfully enhanced through the in situ formation of a high-entropy rock salt phase on the surface of the cathode material. This modification not only protects the cathode from structural degradation but also effectively mitigates phase transitions during cycling, leading to favored sodiation/de-sodiation electrochemistry and enhanced structure stability. Attributed to its structural superiorities, the high-entropy doping layered oxide cathode maintains 85.9% and 73.7% capacity retention at 0.1 C and 0.3 C after 200 and 600 cycles, respectively, which marks a significant improvement over traditional undoped NM cathodes. The proposed facile synthesis strategy enables the high entropy cathode material with possibility for large scale production, holding great promises to be utilized for practicalization.
研究领域:
储能
·
材料科学
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电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yingkai Hua,Zizheng Song,Kunran Yang,Seungjae Suk,Linlong Lyu,Xiangjun Pu,Renjie Li,Haitao Huang,Kyu-Young Park,Zibin Chen,Zheng-Long Xu
The development of high-energy-density and high-power cathode materials represents a critical requirement for advancing practical sodium-ion battery (SIB) technologies. In this work, a high-entropy-doped KTiOPO 4 (KTP)-type NaV 0.95 (Fe, Mn, Ni, Al, Ca) 0.05 PO 4 F (HE-NVPF) cathode material is presented, designed to enhance reaction kinetics, operation voltage, and energy density through single-crystal phase formation and improved electronic/ionic conductivity. The high-entropy doping strategy enables the elimination of inductive nucleation agents while promoting single-crystal growth of HE-NVPF during low-temperature hydrothermal synthesis. The KTP-type crystal structure facilitates complete Na ion utilization and enables a solid-solution Na storage mechanism in HE-NVPF cathodes, accompanied by minimal lattice volume changes (4%). When tested in half cells in combination with Na metal anode, the HE-NVPF cathodes exhibit a remarkably high energy density of 532 Wh kg −1 with an average operating voltage of 4.0 V, an exceptional long cycle life of 3 000 cycles, and high capacity retentions at 30 C (2 min per charge). Its practical feasibility is demonstrated in graphite//HE-NVPF full cells, which present power densities of above 10 000 W kg −1 and energy densities of over 342 Wh kg −1 for 1000 cycles. This work offers new insights into designing high-entropy doped cathode materials for long-life and fast-charging SIBs.
研究领域:
材料科学
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电化学
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能源存储
·
无机化学
·
固态化学
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纳米材料
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Ziming Wang,Hao Chen,Qi Zhao,Yu Shi,Haiyang Wang,Yuxuan Ye,Yu Guo,Zhiguo Du,Shubin Yang
Although O3-type layered oxides have become viable cathode materials for sodium-ion batteries (SIBs) due to their high energy densities , they still suffer from narrow ion channels and serious structure degradation, severely jeopardizing their electrochemical properties . Here, a stable O3-type layered oxide NaNi 0.4 Mn 0.4 M 0.2 O 2 (M= Fe, Cu, Mg, Ti, Sn) (HE-NaNM) was synthesized by a high-entropy doping strategy. Owing to the introduction of the metal cations with ionic radiuses in a range of 0.61-0.73 Å into the layered structure, the lattice is expanded from 15.94 to 16.03 Å in c -axis, associated with a high distortion of TMO 6 octahedrons, offering broad channels for sodium-ion transport in the lattices. Moreover, such expanded lattices and highly distorted TMO 6 octahedrons enable to efficiently restrain the migration of TM ions and the severe sliding of TMO 2 slabs, affording one-step reversible structure evolution between O3 and P3 phase during sodium extraction/insertion without formation of harmful interphases. As a result, a good rate capability of 77.9 mAh g -1 at 10 C and a long-term cycling stability up to 400 cycles at 5 C are achieved for sodium storage.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Maosheng Gong,Yadong Wei,Hongzhou Zhang,Jingyuan Liu,Xin Zhang,Xuanming Chang,Peiyu Hou,Xijin Xu,Lianqi Zhang
High-capacity Ni-rich cathodes hold considerable promise in advancing both high-energy Li-ion batteries (LIBs) and all-solid-state Li batteries (ASSLBs). Yet, lattice volume changes induced by the H2–H3 phase transition lead to structural degradation. It has been demonstrated that doping approaches can enhance structural stability. Nevertheless, the selection of an appropriate dopant is of considerable importance for the design of high-performance Ni-rich materials with high-entropy doping. Furthermore, the feasibility of high-entropy doped Ni-rich cathodes in ASSLBs has not been reported to date. In this study, leveraging the chemically competitive doping mechanism of Mg, Al, Ti, Nb, and Mo elements, we propose a high-entropy doped LiNi0.8Co0.1Mn0.05Mg0.01Al0.01Ti0.01Nb0.01Mo0.01O2 (HE-NCM) to stabilize Ni-rich cathodes. In-situ X-ray diffraction confirms that the synergistic effect of multiple dopants in high-entropy doping significantly alleviates the H2–H3 phase transition and reduces lattice volume changes, which contribute to the absence of microcracks and improved bulk/interface stability. In ASSLBs, the HE-NCM@LiNbO3 maintains an outstanding capacity retention of 84.5% even after 1700 cycles, demonstrating the feasibility of high-entropy doped Ni-rich cathodes when matched with a sulfide solid-state electrolyte. The application of high-entropy doping methodology for the development of advanced rechargeable batteries has been shown to provide a novel perspective on the improvement of the structural robustness and interfacial compatibility of Ni-rich cathode materials.
研究领域:
材料科学
·
电化学
·
储能技术
·
锂离子电池
·
固态电池
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）