CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Bo Zhao,Qianqian Liu,Guijuan Wei,Jianghao Wang,Xin-Yao Yu,Xiang Li,Hao Bin Wu
CoSe 2 is a potential anode material for sodium-ion batteries in terms of their high sodium storage capacity and tunable properties. However, structural degradation and unstable interphase during the reversible sodiation and de-sodiation lead to fast capacity decay. In this work, we develop a nanocomposite architecture based on CoSe 2 nanoparticles embedded in N-doped carbon matrix with conformal TiO 2 coating (CoSe 2 @NC@TiO 2 ) by using a metal-organic framework-assisted strategy. The small CoSe 2 nanoparticles and N-doped carbon matrix facilitate charge transport and suppress the structural degradation, while the redox-active TiO 2 shell further strengthens the structural and interfacial stability without decreasing the capacity. The as-prepared CoSe 2 @NC@TiO 2 nanocomposite particles deliver a reversible sodium storage capacity of 520 mAh g −1 at 0.1 A g −1 with a capacity retention of 78% after 200 cycles, in contrast to the rapid capacity fading after 50 cycles of the pristine CoSe 2 @NC particles without TiO 2 shell.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Huiyong Li,Ping Liu,Nan Zhou,Xiaobing Huang,Haiyan Wang
Stabilizing the layer structures of Mo-based anode materials is still a challenge for Li ion batteries . Herein, we proposed an electrochemical presodiation strategy for MoS 2 and MoO 3 to improve their cycling stability. It is interesting to note that the cycling stability of as-treated MoS 2 and MoO 3 was significantly improved. Although the reversible discharge capacity was slightly decreased, the capacity of the pretreated MoS 2 at 300 mA g −1 was retained at 345 mA h g −1 after 100 cycles while that of the pristine one decreased to 151 mA h g −1 . The capacity of the pretreated MoO 3 after 60 cycles was also improved from 275 mA h g −1 (the pristine one) to 460 mA h g −1 . The stabilizing effect was further verified by scanning electron microscope (SEM) analysis. Electrochemical presodiation here could be a promising modification strategy for Mo-based anode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Chemical Science
·
2023
·Vol. 14
·期 44
·12570-12581
·
IF 8.4
Mingli Xu,Fengxue Zhang,Yanhui Zhang,Chen Wu,Xue Zhou,Xinping Ai,Jiangfeng Qian
Exploring a sodium-enriched cathode (i.e. Na4V2(PO4)3, which differs from its traditional stoichiometric counterpart Na3V2(PO4)3 that can provide extra endogenous sodium reserves to mitigate the irreversible capacity loss of the anode material (i.e. hard carbon), is an intriguing presodiation method for the development of high energy sodium-ion batteries. To meet this challenge, herein, we first propose a redox-potential-matched chemical sodiation approach, utilizing phenazine-sodium (PNZ-Na) as the optimal reagent to sodiate the Na3V2(PO4)3 precursor into Na-enriched Na4V2(PO4)3. The spontaneous sodiation reaction enables a fast reduction of one-half V ions from V3+ to V2+, followed by the insertion of one Na+ ion into the NASICON framework, which only takes 90 s to obtain the phase-pure Na4V2(PO4)3 product. When paired with a hard carbon anode, the resulting Na4VP‖HC full cell exhibits a high energy density of 251 W h kg−1, which is 58% higher than that of 159 W h kg−1 for the Na3VP‖HC control cell. Our chemical sodiation methodology provides an innovative approach for designing sodium-rich cathode materials and could serve as an impetus to the development of advanced sodium-ion 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
Small
·
2023
·Vol. 19
·期 32
·2301141
·
IF 13.3
Yiming Zhang,Dafu Tang,Yuanyuan Liu,Jin Wang,Zhipeng Li,Xin Li,Guang Han,Qiulong Wei,Baihua Qu
Sodium-ion batteries (SIBs) are promising alternatives for large-scale energy storage owing to the rich resource and cost effectiveness. However, there are limitations of suitable low-cost, high-rate cathode materials for fast charging and high-power delivery in grid systems. Herein, a biphasic tunnel/layered 0.80Na 0.44 MnO 2 /0.20Na 0.70 MnO 2 (80T/20L) cathode delivering exceptional rate performance through subtly regulating the sodium and manganese stoichiometry is reported. It delivers a reversible capacity of 87 mAh g −1 at 4 A g −1 (33 C), much higher than that of tunnel Na 0.44 MnO 2 (72 mAh g −1 ) and layered Na 0.70 MnO 2 (36 mAh g −1 ). It proves that the one-pot synthesized 80T/20L is able to suppress the deactivation of L-Na 0.70 MnO 2 under air-exposure, which improves the specific capacity and cycling stability. Based on electrochemical kinetics analysis, the electrochemical storage of 80T/20L is mainly based on pseudocapacitive surface-controlled process. The thick film of 80T/20L cathode (a single-side mass loading over 10 mg cm −2 ) also has superior properties of pseudocapacitive response (over 83.5% at a low sweep rate of 1 mV s −1 ) and excellent rate performance. In this sense, the 80T/20L cathode with outstanding comprehensive performance could meet the requirements of high-performance SIBs.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jiangping Song,Mengjun Wu,Kan Fang,Tian Tian,Rui Wang,Haolin Tang
Red phosphorus/carbon (P/C) materials have been extensively studied as promising anodes for sodium-ion batteries (SIBs) owing to their high capacities and moderate working potentials. However, the low initial Coulombic efficiency (ICE) and unstable solid-electrolyte interphase (SEI) of P/C composites limit their widespread applications. In this study, we develop an effective presodiation method to compensate for the irreversible sodium loss of the S-doped P/C (P/C@S) anode and yield a thin, uniform, and NaF-rich SEI layer on the presodiated P/C@S (pNa-P/C@S) anode during cycling. Consequently, the pNa-P/C@S anode exhibits a remarkable ICE of 98.7% as well as superior cycling performance and rate capability in the half cell. When pNa-P/C@S anode is coupled with conventional Na 3 V 2 (PO 4 ) 2 F 3 , Na 3 V 2 (PO 4 ) 3 , and NaCu 0.12 Ni 0.23 Fe 0.33 Mn 0.33 cathodes, all the full cells demonstrate desirable ICEs (>98%), high energy densities, and excellent cycling performance. The proposed method has been extended to another anode (SnO 2 ) to demonstrate its applicability in fabricating anodes with a high ICE and stable NaF-rich SEI layer.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yan Ji,Zhiqing Ge,Huali Zhu,Junfei Duan,Yanxia Wang,Yanling Gu,Zhaoyong Chen
Constructing an artificial SEI on a hard carbon surface effectively enhances initial coulombic efficiency (ICE) and cycling stability. A polymer electrolyte binder containing sodium ions (SPEB), consisting of PAAS and PEO , is designed using a straightforward method. A high ion conductivity artificial SEI is constructed on a pomelo peel-derived hard carbon (PHC) surface through esterification and hydrogen bonding . In hard carbon anodes for sodium ion batteries (SIBs), SPEB plays a crucial role by facilitating pre-sodiation in PHC, enhancing ion conductivity, and guiding the construction of a NaF-rich, ultra-thin, and stable SEI. The synthesized PHC possesses an outstanding reversible specific capacity of 375.13 mAh·g −1 , a superior ICE of 90.94 %, good rate capability, and excellent cycle stability. After 400 cycles at 0.9 A·g −1 , it retains 152.52 mAh·g −1 with almost no decay. Meanwhile, SPEB demonstrates an exciting performance in other hard carbons and helps its commercialization application in SIBs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 48
·25546-25555
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IF 14.511
Rui Zhang,Yan Wang,Runnan Liu,Dan Sun,Yougen Tang,Zhiyong Xie,Haiyan Wang
Sodium-ion batteries (SIBs) demonstrate great application prospects for large-scale energy storage owing to the merits of low cost and abundant sodium resources. Nevertheless, the low initial coulombic efficiency of anode materials inevitably consumes the limited Na+ from the cathode, leading to the loss of reversible capacity and inferior energy density of the full-cell. Herein, a multifunctional cathode sodiation additive, 1,2,4-triazole sodium (TS), is first proposed to offset the Na loss in sodium ion full-cells. The energy density of the as-constructed hard carbon//Na3V2(PO4)3 full cell with 10 wt% TS is obviously improved from 180 to 196 W h kg−1 based on the total mass of the cathode, additive, and anode. More importantly, this TS additive demonstrates multifunctional effects on the electrode. It can further modify the conductive framework in the electrode and build a desirable NaF-rich cathode electrolyte interface on the surface of the cathode, thus accelerating the sodiation/desodiation process. Furthermore, this additive can also enable the facile fabrication of a flexible Na3V2(PO4)3 electrode with high performance. This work provides a new-type of cathode sodiation additive with multiple roles for advanced SIBs.
研究领域:
能源存储
·
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 33
·17491-17502
·
IF 11.9
Qingyuan Liu,Jianchao Chen,Danni Du,Shuxian Zhang,Chunyan Zhu,Zhiwei Zhang,Chengxiang Wang,Longwei Yin,Rutao Wang
Sodium-ion capacitors (SICs) have long been pursued as economically favorable alternatives to their well-developed lithium-ion counterparts. However, their commercialization suffers from the immature pre-sodiation technology in existence, primarily due to the increased cost and risk invoked by the use of highly reactive metallic sodium and sodium containing additives as sodium sources. Herein, we uncover a unique approach based on the use of prelithiated carbon as the anode for SICs. The prelithiated hard carbon anode with the preformed solid-electrolyte-interphase (SEI) layer can effectively compensate the large irreversible capacity loss and greatly improve the initial coulombic efficiency of SICs. Besides, the preformed Li-based SEI layer is effective in controlling the Na-ion intercalation behavior of the carbon anode, as confirmed by the reversible capacity that is mainly contributed by the extended slope region without the low-potential plateau region, thus avoiding the safety issues from Na metal plating. These features endowed by the pre-lithiation strategy enable us to use a slope region-dominated soft carbon anode for high-safety SICs with high capacity and superior rate capability. This work possesses far-reaching potential to implant the mature pre-lithiation technology into sodium-ion energy storage systems to resolve the scientific bottleneck from the immature pre-sodiation technology.
研究领域:
能量存储
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材料科学
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电化学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Yin Qin,Sihao Deng,Xiao-Ye Zhou,Bin Cao,Zhehan Ying,Zilin Yan,Zheng Zhong,Lunhua He,Kaikai Li,Tong-Yi Zhang
RuO2, the benchmark catalyst for the oxygen evolution reaction (OER), has traditionally been considered Pauli paramagnetic; however, recent findings have demonstrated its antiferromagnetic (AFM) properties, hinting at the opportunity to enhance RuO2’s OER performance by manipulating its magnetic traits. In this study, we successfully induced weak ferromagnetism in commercial RuO2, transitioning it from an AFM state using an electrochemical sodiation method. This process resulted in high activity, achieving an overpotential of 145 mV to reach 10 mA cm–2 and extending the service hours by more than 13 times compared to pristine RuO2 in 0.5 M H2SO4. A combination of experimental and theoretical analyses indicated that the sodiation triggers significant surface compressive stress, leading to lattice distortion and disruption of the pristine structural symmetry of RuO2. Consequently, orbital degeneration ensues, prompting individual spin-up d electrons to jump to the high-spin state. This mechanism drives the conversion from AFM to weak FM behavior for RuO2, ultimately yielding exceptional catalytic activity and stability.
研究领域:
材料科学
·
电化学
·
催化
·
纳米技术
·
固态物理
·
表面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 6
·1945-1951
·
IF 5.7
Li Ya Liang,Ya Ting Gao,Shuai Chang,Jian Lv,Bin Bin Chen,Da Wei Li
Achieving dynamic optical tunability of ultralong room temperature phosphorescence (RTP) materials is critical for the design of advanced multi-level information encryption. In this work, we develop a facile metal–organic thermal polymerization strategy for the preparation of aluminium/phenylalanine phosphorescent materials (Al/Phe-PMs) with a production capacity on a kilogram scale. The Al/Phe-PMs show an ultralong lifetime of up to 1015.3 ms, with a phosphorescent quantum yield of 7.98%. Most importantly, the Al/Phe-PMs have a unique time-dependent phosphorescence color (TDPC) phenomenon because of the presence of multiple emission peaks with diverse decay times, causing the dynamic transition of RTP color from yellow to chartreuse and then to green with the extension of the decay time. Furthermore, NaOH can be used for effectively regulating the optical properties of Al/Phe-PMs, causing a great blue shift in RTP emission and a decrease in RTP efficiency. NaOH-stimulated color tunability is proven to be ascribed to the sodiation reconfiguration effect that results in the depolymerization of Al/Phe-PMs and the destruction of the rigid conformation. Benefitted by the advantages of both TDPC and color-tunability, the proposed Al/Phe-PMs can be designed for constructing dynamic colored 5D information encryption systems.
研究领域:
材料科学
·
光电
·
信息安全
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Zhang Jiyu,Yan Yongliang,Wang Xin,Cui Yanyan,Zhang Zhengfeng,Wang Sen,Xie Zhengkun,Yan Pengfei,Chen Weihua
Non-aqueous sodium-ion batteries (SiBs) are a viable electrochemical energy storage system for grid storage. However, the practical development of SiBs is hindered mainly by the sluggish kinetics and interfacial instability of positive-electrode active materials, such as polyanion-type iron-based sulfates, at high voltage. Here, to circumvent these issues, we proposed the multiscale interface engineering of Na 2.26 Fe 1.87 (SO 4 ) 3 , where bulk heterostructure and exposed crystal plane were tuned to improve the Na-ion storage performance. Physicochemical characterizations and theoretical calculations suggested that the heterostructure of Na 6 Fe(SO 4 ) 4 phase facilitated ionic kinetics by densifying Na-ion migration channels and lowering energy barriers. The (11-2) plane of Na 2.26 Fe 1.87 (SO 4 ) 3 promoted the adsorption of the electrolyte solution ClO 4 − anions and fluoroethylene carbonate molecules, which formed an inorganic-rich Na-ion conductive interphase at the positive electrode. When tested in combination with a presodiated FeS/carbon-based negative electrode in laboratory- scale single-layer pouch cell configuration, the Na 2.26 Fe 1.87 (SO 4 ) 3 -based positive electrode enables an initial discharge capacity of about 83.9 mAh g −1 , an average cell discharge voltage of 2.35 V and a specific capacity retention of around 97% after 40 cycles at 24 mA g −1 and 25 °C.
研究领域:
电化学
·
材料科学
·
能量存储
✓ 已验证
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Jianwen Fei,Wei Yang,Yin Dai,Wei Xu,Huizhu Fan,Yani Zheng,Junli Hong,Jun Zhang,Wanying Zhu,Xuemin Zhou
The enzyme-like properties of nanozymes may be considerably affected by the structure and surface groups, which thus need to be optimized. Here, through a simple NaOH chemical corrosion method, the chemical structure similar to N-Methylpyrrolidone (NMP), which possessed intrinsic oxidase-like activity, was introduced into polypyrrole (PPy), and then this nanomaterial became oxygen-functionalized PPy ( o -PPy) with excellent oxidase-like activity from PPy without this property. Furthermore, after compounding magnetic Fe 3 O 4 , the obtained nanocomposites Fe 3 O 4 @o-PPy nanoparticles (Fe 3 O 4 @o-PPy NPs) showed superiorities in separation during synthesis and real-time control of enzyme catalysis . Studies have found that the enzymatic activity of Fe 3 O 4 @o-PPy NPs depended on the amount of functionalized oxygen and the conjugation extent of o -PPy. Fe 3 O 4 @o-PPy NPs had efficient oxidase-like activity under a wide range of pH and temperature. Based on the oxidase-like activity of Fe 3 O 4 @o-PPy NPs, a colorimetric sensor for glutathione (GSH), which presented rich color changes and satisfactory colorimetric resolution by adding the amaranth , was realized. We believe that the functional modification and structural regulation of PPy can not only realize its wider application but also promote the discovery of novel and efficient nanozymes .
研究领域:
材料科学
·
纳米技术
·
分析化学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）