ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Mengke Li,Gaojie Yan,Peng Zou,Haifeng Ji,Han Wang,Zongjie Hu,Zhipeng Yang,Yi Feng,Haijie Ben,Xiaojie Zhang
First, a new covalent organic framework (HUT9) with disulfide bonds have been synthesized, which can be grown in situ on carbon nanotubes (CNT) as separator modification material for Li–S batteries. Experiments and DFT showed that disulfide bond could effectively capture soluble polysulfides (LiPSs) during discharge process, while promoting the conversion of LiPSs to Li2S/Li2S2 and improve the utilization rate of sulfur. The polar groups of the covalent organic framework provide chemisorption, and an interwoven network of HUT9@CNT (physical constraints) cooperates to inhibit the transport of LiPSs. The modified battery has a capacity retention rate of 83% (decay rate of 0.032% per cycle) after 500 cycles at 1 C. Specifically, the battery with 2-HUT9@CNT modified separators (sulfur loading: 4 mg cm–2, sulfur content: 80%, electrolyte/sulfur ratio: 10 mL g–1) can reach 3.4 mAh cm–2 area capacity after 50 cycles. This work enriched the COF material system and provided guidance for the application of organic materials in an energy storage system.
研究领域:
材料科学
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能源存储
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2019
·Vol. 24
·期 1
·111-119
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IF 2.531
Wang Xingbo,Sun Zhenghao,Zhao Yan,Li Jingde,Zhang Yuecheng,Zhang Zisheng
In this work, we fabricated a sulfur-infiltrated three-dimensional reduced graphene oxide wrapped Na 4 Mn 9 O 18 nanorods microsphere (NMO/RGO/S) as efficient cathode material lithium/sulfur (Li/S) batteries. The NMO/RGO/S microsphere was developed by spray drying the NMO, GO, and S suspension followed by a hydrazine reduction process. The resulting hierarchical microsphere, constructed by cross-linked NMO nanorods and RGO sheet, shortens the electron/ion diffusion pathway. It also provides adequate void space to accommodate S and mitigate the volume variation during cycling. Additionally, the polar NMO nanorods offer strong chemical adsorption to lithium polysulfides, which was confirmed by adsorption experiment. Owing these features, the NMO/RGO/S electrode exhibited a high specific capacity and good cyclability as well. The initial discharge capacity is 952.8 mAh g −1 at 1 C, and after 500 cycles, a discharge capacity of 520 mAh g −1 is maintained, which corresponds to a capacity fading of 0.09% per cycle. The simple preparation method for the construction of NMO/RGO/S microsphere reported in the study advances the development of efficient cathode materials for Li/S battery.
Graphical abstract
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Wang Shixun,Wei Zhiquan,Hong Hu,Guo Xun,Wang Yiqiao,Chen Ze,Zhang Dechao,Zhang Xiaoyu,Yang Xuyong,Zhi Chunyi
The growing potential of low-dimensional metal-halide perovskites as conversion-type cathode materials is limited by electrochemically inert B-site cations, diminishing the battery capacity and energy density. Here, we design a benzyltriethylammonium tellurium iodide perovskite, (BzTEA) 2 TeI 6 , as the cathode material, enabling X- and B-site elements with highly reversible chalcogen- and halogen-related redox reactions, respectively. The engineered perovskite can confine active elements, alleviate the shuttle effect and promote the transfer of Cl - on its surface. This allows for the utilization of inert high-valent tellurium cations, eventually realizing a special eleven-electron transfer mode (Te 6+ /Te 4+ /Te 2- , I + /I 0 /I - , and Cl 0 /Cl - ) in suitable electrolytes. The Zn||(BzTEA) 2 TeI 6 battery exhibited a high capacity of up to 473 mAh g -1 Te/I and a large energy density of 577 Wh kg -1 Te/I at 0.5 A g -1 , with capacity retention up to 82% after 500 cycles at 3 A g -1 . The work sheds light on the design of high-energy batteries utilizing chalcogen-halide perovskite cathodes.
研究领域:
材料科学
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能源存储技术
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2024
·Vol. 30
·期 10
·6047-6059
·
IF 2.4
Jin Duolong,Dong Xiaoping,Liu Jiankai,Pang Qianran,Xin Shenghai,Yang Liying,Wang Cuibiao
With the continuous development of new energy application technology, there is an increasingly urgent need for the safety and affordability of new energy storage products. In recent years, aqueous zinc-ion batteries based on mild aqueous electrolytes have garnered widespread attention as a potential replacement for traditional lithium-ion batteries. However, the limited capacity and low operating voltage of aqueous zinc-ion batteries restrict their widespread application. For this reason, sulfuric acid was added to the electrolyte, which effectively promotes the two-electron conversion of MnO 2 /Mn 2+ during the discharge process. This enhancement results in the high voltage segment of the batteries’ discharge phase offering a higher reversible specific capacity. The results showed that the batteries with 0.1 M H 2 SO 4 added to the electrolyte had a reversible discharge-specific capacity of up to 536.07 mAh·g −1 at a current density of 100 mA·g −1 . The activated batteries exhibited a reversible specific capacity of 85.11 mAh·g −1 even at a high current density of 1 A·g −1 . Furthermore, the capacity retention rate after 1000 cycles was 88.3%. Moreover, the activation rate of the batteries was faster with the addition of H 2 SO 4 , and the average operating potential increased compared to the batteries without H 2 SO 4 in the electrolyte. This provides an effective solution for the practical application of aqueous zinc-ion batteries in power grids.
研究领域:
电化学
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能源存储技术
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Shengzeng Lin,Zhen Wang,Tianxing Lu,Haojie Wang,Pei Li,Fang Yang,Zhimeng Guo
The electrochemical properties and microstructure of Li-rich cathode materials Li 1.2 Mn 0.54 Co 0.13 Ni 0.13 O 2 synthesized in one-step were studied. The sample (s-g) was composed of single crystal particles (1–2 μm) with regular and smooth surface, and the particle size distribution was concentrated. Compared with the sample (cop) prepared by traditional coprecipitation method, the discharge specific capacity of sample s-g increased from 79.9 mAh g −1 to 114.5 mAh g −1 at 10C. After 100 cycles at the rate of 0.1C and 0.2C, the capacity retention rates of sample s-g were 99.48% and 105.36%, while those of sample cop were 66.23% and 71.55%, respectively. Homogeneous single crystal structure and good grain size control greatly released the capacity potential of Li-rich cathode materials and solved the problem of poor rate performance and fast capacity decay.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Di Zhang,Kewei Pei,Zhenzhen Peng,Huan Wang,Qiujun Wang,Huilan Sun,Zhilin Hu,Zhaojin Li,Bo Wang
ABSTRACT Lithium-rich layered oxides (LLOs) have garnered substantial attention due to their superior reversible capacity. However, oxygen release and transition metal migration are likely to occur during the charging and discharging process because of the inherently unstable structure of LLOs, which hampers their commercialization process. Present studies suggest that the local structure and atomic arrangement have a considerable impact on the stability of LLOs. Hence, researchers have been trying to determine how to implement the control of atomic ordering. Herein, we propose a new strategy to modify the cation arrangement of LLOs by adjusting the mixing order of cations through the sol-gel method. As a result, the optimized S-LLO sample presents a more ordered cation arrangement than that of the pristine M-LLO sample. The S-LLO cathode, meanwhile, provides a high discharging capacity of 249.5 mAh·g −1 accompanied by a coulombic efficiency of 73.7% at 0.1 C and can still maintain a capacity of 91.8 mAh·g −1 at 10 C. More importantly, a high-capacity retention of 71.7% can be obtained after 150 cycles at 1 C for the optimized LLO cathode, whereas the pristine M-LLO sample retains a retention of only 45.5%.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Yujie Wang,Mingyu Zhang,Yuxuan Zhang,Yafeng Wang,Wenxin Liu,Chujie Yang,Veniamin Kondratiev,Feixiang Wu
Metal fluoride–lithium batteries have been viewed as very promising candidates for next-generation rechargeable batteries with higher energy densities. However, the intrinsic insulating properties of metal fluoride cathode lead to the poor reaction kinetics and unsatisfactory electrochemical performance. Herein, a honeycombed CoF2@C nanocomposite with a high specific surface area up to 180.4 m2 g–1, in which the nanosized CoF2 particles with size of 5–25 nm are evenly embedded in the honeycombed carbon framework, is prepared by the low-temperature fluorination of honeycombed Co@C nanocomposite precursor. As expected, the as-produced CoF2@C nanocomposite can deliver a high-capacity utilization of 365 mAh g–1 and an average capacity retention of 81.9% over 300 cycles at a current density of 110 mA g–1, as well as a reasonable capacity of 205 mAh g–1 at 1100 mA g–1. Such excellent electrochemical performance is due to the unique configuration that achieves the nanoconfinement of conversion reaction in the metal fluoride cathode. To be specific, on the one hand, the honeycombed structure provides uniformly isolated nanospace to inhibit the volume expansion and product agglomeration in the conversion reaction. On the other hand, the excellent reaction kinetics is attributed to the three-dimensional electron and ion conduction pathway, that is, the electrons are conducted through the honeycombed carbon walls, while Li+ are transferred via the interconnected honeycomb channels, facilitating the high-capacity utilization.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yongwei Chen,Xiangzhen Zheng,Ying Pan,Tao Huang,Maoxiang Wu
The instability of the electrode–electrolyte interface in high-voltage cathode materials significantly hinders the development of high-energy-density lithium-ion batteries (LIBs). In this study, 1,3-diphenyl-1,1,3,3-tetramethyldisiloxane (DTS) is employed as an electrolyte additive to enhance the cycling stability and capacity retention for Li||LLO (Li-rich layered oxide) batteries operating at 4.8 V. Theoretical calculations show that DTS can preferentially oxidize on the surface of the cathode. The oxidation forms a robust cathode electrolyte interface (CEI) on the LLO surface, significantly mitigating cracking, regeneration, and irreversible phase transitions of the LLO cathode. As anticipated, the Li||LLO batteries with the DTS electrolyte exhibit a capacity retention of 85.4% after 100 cycles at 4.8 V compared to the baseline electrolyte (45.2%). Furthermore, these batteries demonstrate superior capacity retention after 100 cycles at 4.8 V, even with the presence of 1000 ppm of H2O.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 31
·17941-17949
·
IF 3.049
Xinxin Li,Hebang Shi,Bo Wang,Na Li,Liqiang Zhang,Pengpeng Lv
Surface coating of metal oxides is an effective approach for enhancing the capacity retention of a nickel-rich layered cathode. Current conventional coating techniques including wet chemistry methods and atomic layer deposition are restricted by the difficulty in perfectly balancing the coating quality and scale-up production. Herein, a highly efficient TiO2 coating route through fluidized bed chemical vapor deposition (FBCVD) was proposed to enable scalable and high yield synthesis of a TiO2 coated nickel-rich cathode. The technological parameters including coating time and TiCl4 supply rate were systematically studied, and thus a utility TiO2 deposition rate model was deduced, promoting the controllable TiO2 coating. The FBCVD TiO2 deposition mechanism was fundamentally analyzed based on the TiCl4 hydrolysis principle. The amorphous and uniform TiO2 coating layer is compactly attached on the particle surface, forming a classical core–shell structure. Electrochemical evaluations reveal that the TiO2 coating by FBCVD route indeed improves the capacity retention from 89.08% to 95.89% after 50 cycles.
研究领域:
材料科学
·
化学工程
·
能源技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 36
·期 13
·2311553
·
IF 29.4
Ruyu Shi,Nengzhan Zheng,Haocheng Ji,Mengtian Zhang,Xiao Xiao,Jun Ma,Wen Chen,Junxiong Wang,Hui-Ming Cheng,Guangmin Zhou
Direct regeneration of spent lithium-ion batteries has received wide attention owing to its potential for resource reuse and environmental benefits. The repair effect of direct regeneration methods undergoing heterogeneous repair process is usually inferior, while homogenous repair process plays a vital role to achieve satisfactory repair results. However, the practical applications of current homogeneous repair methods are challenged by the complex operations and relatively high costs owing to the requirement of additional heating or pressurization. Herein, this work proposes a simple strategy to achieve homogeneous repair of spent cathode materials under relatively mild conditions by uniformly precoating lithium source at room temperature and atmospheric pressure. Followed by annealing, highly degraded LiNi 0.83 Co 0.12 Mn 0.05 O 2 with severe Li deficiency and irreversible phase transition is repaired to have an initial capacity of 181.6 mAh g -1 and capacity retention of 80.7% after 150 cycles at 0.5 C. The lithium source used in this strategy is from the spent lithium anode. Moreover, this strategy is suitable for the direct regeneration of various layer oxide cathode materials with different failure degrees. This work provides both theoretical guidance and practical examples for the straightforward, effective, and universally applicable direct regeneration methods.
研究领域:
材料科学
·
电化学
·
能源存储
·
可持续技术
·
电池回收
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Jinyang Li,Jiajun Wang,He Huang,Meng Gao,Xingkai Wang,Qiujiang Dong,Wanxing Zhang,Shiyu Zhang,Hao Guo,Xiaopeng Han,Wenbin Hu
Increasing the charging cutoff voltage of LiCoO 2 to 4.6 V is significant for enhancing battery density. However, the practical application of Li‖LiCoO 2 batteries with a 4.6 V cutoff voltage faces significant impediments due to the detrimental changes under high voltage. This study presents a novel bifunctional electrolyte additive, 2-(trifluoromethyl)benzamide (2-TFMBA), which is employed to establish a stable and dense cathode–electrolyte interface (CEI). Characterization results reveal that an optimized CEI is achieved through the synergistic effects of the amide groups and trifluoromethyl groups within 2-TFMBA. The resulting CEI not only enhances the structural stability of LiCoO 2 but also serves as a high-speed lithium-ion conduction channel, which expedites the insertion and extraction of lithium ions. The Li‖LiCoO 2 batteries with 0.5 wt% 2-TFMBA achieves an 84.7% capacity retention rate after enduring 300 cycles at a current rate of 1 C, under a cut-off voltage of 4.6 V. This study provides valuable strategic insights into the stabilization of cathode materials in high-voltage batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Yiwen Yao,He Xu,Zhongzhen Tian,Jing Zhang,Fuxu Zhan,Mei Yan,Chuankun Jia
To achieve sustainable development, the development and utilization of redox-active organic species in aqueous redox flow batteries provide broad prospects for large-scale and sustainable energy storage. Herein, we report a sulfonated ferrocene derivative, ferrocene ammonium sulfonate, that is stable and easy to synthesize. We applied it as a catholyte in zinc hybrid flow batteries. Through the adjustment of the electrolyte, the battery showed high capacity retention and efficiency. When the current density was 20 mA/cm2 and 0.5 M NaCl + 0.5 M NH4Cl solution was used as the supporting electrolyte, the capacity retention reached 92.55% after 100 consecutive charge/discharge cycles. In addition, the coulombic efficiency, energy efficiency, and voltage efficiency stayed at 98.33, 83.19, and 84.60%, respectively. This battery design puts forward an idea for developing low-cost materials and improving capacity retention.
研究领域:
能源存储
·
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）