Matter
·
2025
·
IF 17.5
Li Zeng,Dan Luo,Weishan Tang,Dayue Du,Hanna He,Chuhong Zhang
Achieving a high depth of discharge (DOD) in dendrite-free Zn anodes is essential for enhancing the energy density and cycling lifespan of zinc-ion batteries (ZIBs). However, conventional three-dimensional (3D) anodes featuring thick and disordered pore structures suffer from gradient and tortuous ion diffusion pathways, leading to mismatched electron/ionic transfer kinetics, which limit their DODs to usually lower than 40%. Herein, a low-tortuosity, N-doped 3D Zn anode is deftly crafted by 3D printing. The vertically aligned pore architecture significantly reduces electrode tortuosity, enabling rapid ion transport with shortened migration pathways. Meanwhile, the N-doped zincophilic surface substantially reduces the deposition energy barrier for uniform and compact Zn deposition even under high DODs. The resulting symmetrical cells exhibit dendrite-free cycling for 720 h at 1 mA cm −2 and 1 mAh cm −2 while sustaining stable plating/stripping processes at a high DOD of 61.7%. This work offers fundamental insights into the anode design philosophy for long-lasting and energy-dense ZIBs.
研究领域:
电化学储能
·
材料科学
·
能源化学
·
先进制造
·
纳米材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xintao Deng,Fuyuan Yang,Jugang Ma,Yangyang Li,Jian Dang,Minggao Ouyang
A ternary phase field model is developed for water/N-methyl-2-pyrrolidone(NMP)/polysulfone system to simulate the non-solvent induced phase separation process. Our model succeeds to predict detailed asymmetric membrane structures, with dense skin layer and porous sublayer constructed from polymer network . It is found that the pore distribution and connectivity of polymer network change with the initial composition of casting solution and coagulation bath. Tortuosity and maximum pore size along the direction of thickness are calculated, with a typical trade-off relation found between them. Electrochemical separation performance was evaluated and found to have a notable correlation with structural characteristics.
研究领域:
材料科学
·
化学工程
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 18
·2309019
·
IF 27.4
Zhanhui Jia,Hao Shen,Jiawei Kou,Tianyi Zhang,Zhen Wang,Wei Tang,Marca Doeff,Ching-Yu Chiang,Kai Chen
The application of solid-state electrolytes in Li batteries is hampered by the occurrence of Li-dendrite-caused short circuits. To avoid cell failure, the electrolytes can only be stressed with rather low current densities, severely restricting their performance. As grain size and pore distributions significantly affect dendrite growth in ceramic electrolytes such as Li 7 La 3 Zr 2 O 12 and its variants; here, a “detour and buffer” strategy to bring the superiority of both coarse and fine grains into play, is proposed. To validate the mechanism, a coarse/fine bimodal grain microstructure is obtained by seeding unpulverized large particles in the green body. The rearrangement of coarse grains and fine pores is fine-tuned by changing the ratio of pulverized and unpulverized powders. The optimized bimodal microstructure, obtained when the two powders are equally mixed, allows, without extra interface decoration, cycling for over 2000 h as the current density is increased from 1.0 mA·cm −2 , and gradually, up to 2.0 mA·cm −2 . The “detour and buffer” effects are confirmed from postmortem analysis. The complex grain boundaries formed by fine grains discourage the direct infiltration of Li. Simultaneously, the coarse grains further increase the tortuosity of the Li path. This study sheds light on the microstructure optimization for the polycrystalline solid-state electrolytes.
研究领域:
材料科学
·
储能技术
·
固态电池
·
陶瓷电解质
·
微观结构工程
✓ 已验证
DOI
高影响因子
Carbon Energy
·
2025
·
IF 24.2
Pengcheng Wang,Xuqi Lin,Houlin Cheng,Ciqi Yuan,Yongping Zheng,Yingbin Lin,Zhigao Huang,Hao Chen,Jiaxin Li
Na 3 V 2 (PO 4 ) 3 (NVP) is a promising electrode material that exhibits magnetic anisotropy; however, the potential of this magnetic anisotropy to optimize battery performance has been largely unexplored. This study proposes a cost-effective and efficient method to induce the alignment of NVP along the (113) crystal plane by applying a vertical magnetic field during the slurry coating process, thereby enhancing its battery performance. Comprehensive structural characterizations and theoretical analysis elucidate the structure-activity relationship between the preferred crystal orientation and ion transport kinetics, facilitating the formation of more ordered Na + deintercalation pathways in NVP electrodes. This alignment reduces electrode tortuosity, enhances interfacial compatibility, and substantially improves battery performance, particularly in terms of high-rate cycling capability. As a result, the magnetic-field-modulated NVP (NVP−M⊥) electrode exhibits a high capacity retention of 85.1% after 500 cycles at 5 C, significantly surpassing that of the pristine electrode. The NVP−M⊥ electrode also demonstrates considerable reversible capacity at 40 C and maintains excellent stability under high temperature and prolonged cycling conditions. Furthermore, superior battery performance is observed in the assembled NVP−M⊥||hard−carbon pouch cell and commercial NVP electrode following magnetic-field modulation, thereby validating the efficacy of this method. Consequently, this magnetic-field-induced crystal-orientation optimization strategy provides an innovative approach for low-cost and high-throughput preparation of high-performance sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Qiang Cai,Junyuan Guo,Rui Zhang,Zijian Li,Pan Feng,Jingjing Luo,Xiaoli Zhao,Linglin Xu,Kai Wu
Cement-based batteries (CEMBs) uniquely integrate energy storage and load-bearing functions, offering transformative potential for self-powered and sustainable buildings. Unfortunately, their application is greatly hindered by low capacity and limited cycle life. The high tortuosity of ion transport at the centimeter scale, and sluggish kinetics at the electrolyte/electrode interfaces in CEMBs are the two main reasons for the limited energy storage performance. Herein, these issues by designing vertically aligned pore channels in a cement matrix is overcome, mimicking the tracheid structure of conifer. This bioinspired design reduces the ion transport tortuosity from 7.80 to 2.86, resulting in a fourfold increase in ion conductivity (to 32.7 mS cm −1 ), while maintaining high mechanical strength (41.6 MPa). The quasi-solid-state CEMBs demonstrate superior performance, delivering a remarkable capacity of 114 mAh g −1 and retaining 63.2% of their capacity after 300 cycles at 0.5 A g −1 . In comparison, traditional CEMBs exhibit a lower initial capacity of 62 mAh g −1 and experience rapid degradation, losing functionality after just 75 cycles. Impressively, the bioinspired CEMBs can simultaneously charge a mobile phone and endure external mechanical loads, showcasing their dual functionality. This innovative bioinspired design presents a promising pathway for scaling up cement-based energy storage systems to enable low-carbon, self-powered buildings.
研究领域:
材料科学
·
储能技术
·
土木工程
·
电化学
·
可持续建筑技术
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-14
·
IF 23.655
Li Xinyang,Wang Yong,Xi Kai,Yu Wei,Feng Jie,Gao Guoxin,Wu Hu,Jiang Qiu,Abdelkader Amr,Hua Weibo,Zhong Guiming,Ding Shujiang
The composite gel electrolyte with low tortuosity ion-conducting arrays (GPE/ICAs) exhibiting high room-temperature ionic conductivity (1.08 mS cm −1 ) was successfully prepared by directionally growing ice crystals and in-situ polymerization.
The stable and rapid Li + migration through ICAs in the GPE is proved by 6 Li solid-state nuclear magnetic resonance and synchrotron radiation X-ray diffraction combined with computer simulations.
Li/LiFePO 4 full cells using GPE/ICAs exhibit excellent cycle performance and high-capacity retention at wide temperature (0–60 °C), which has the potential towards all-weather practical solid-state batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）