JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2026
·
IF 1.7
Li Shiyu,Fu Chengyun,Zhou Duo,Tian Qiang,Henderson Mark Julian,Zhu Shan,Yan Minhao
The adsorption of Sr 2+ and Cs + onto Gaomiaozi bentonite colloids (GMZC) was investigated to evaluate their role in radionuclide migration. The results show that within a concentration range of 20–100 mg·L⁻ 1 for Sr 2+ and Cs + , the distribution coefficient decreases with increasing ion concentration. The mechanistic study indicates that the adsorption of Sr 2+ is predominantly governed by surface complexation, whereas that of Cs + is mainly driven by ion exchange. Furthermore, Sr 2+ induces structural ordering of GMZC layers and promotes particle aggregation. However, in Na-Cl-SO 4 groundwater, the bentonite suspension showed poor stability and a significantly weakened adsorption capacity for both 90 Sr and 137 Cs, demonstrating the decisive impact of water chemistry on its barrier function.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Zhensheng Hong,Jiaxing Hong,Chaobing Xie,Zhigao Huang,Mingdeng Wei
In this paper, we report a one-step and additive-free route for synthesizing hierarchical rutile TiO 2 with mesocrystalline structure. The rutile TiO 2 architecture constructed by oriented tiny nanorod subunits (around 5 nm in diameter) have nano/submicro hierarchical structures, nanoporous nature, a relatively large surface area and high tapped density. When the hierarchical rutile TiO 2 was studied as anode material for Li-ion batteries (LIBs), they exhibited a high reversible capacity of more than 250 mAh g −1 within a voltage window of 1–3 V, superior rate capability and very good cycling stability with 220 mAh g −1 after 100 cycles at 0.1 A g −1 . It’s notable that the hierarchical rutile TiO 2 exhibited superior Li-ion storage properties under deep cycling conditions (0.01-3.0 V), a stable capacity of 346 mAh g −1 after 100 cycles at 0.1 A g −1 could be remained. The hierarchical TiO 2 also displayed a large reversible capacity of more than 255 mAh g −1 (average value) at 0.05 A g −1 and good cycling performance for Na-ion insertion. These results, in combination with high volumetric storage capacity, render hierarchical rutile TiO 2 a promising anode material for rechargeable batteries.
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
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无机化学
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固态化学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 20
·15431-15437
·
IF 3.84
Liping Zhao,Li Qi,Hongyu Wang
Molybdenum disulfide–carbon composite (MoS2–C) sample has been prepared by a hydrothermal method using Na2MoO4, CH4N2S and glucose as starting materials and then calcined at 800 °C in an N2/H2 mixed atmosphere. X-ray diffraction and N2 adsorption–desorption tests have been employed to characterize its crystal and pore structure. SEM, TEM and TG methods have been used to investigate its morphology and the weight ratio of carbon. The MoS2–C can be used as the negative electrode for electric energy storage devices using Na+-based organic electrolytes. The charge storage mechanism at the MoS2–C negative electrode has been investigated. Electric energy storage devices using MoS2–C/graphite have been constructed and their electrochemical performance has been studied.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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功能复合材料
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DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 48
·27651-27659
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IF 12.732
Ming-Hui Cao,Ren-Yan Li,Shi-Ya Lin,Shao-Di Zheng,Lu Ma,Sha Tan,Enyuan Hu,Zulipiya Shadike,Xiao-Qing Yang,Zheng-Wen Fu
Owing to the abundance of raw material reserves and low cost, Na-ion batteries (NIBs) have successfully gained widespread attention from academic and industrial communities in the past few decades. However, the insufficient cathode energy density is still one of the critical bottlenecks restricting the development of NIBs. Following a strategy of introducing Li+ into the transition-metal (TM) layer to enhance the oxygen redox reaction, a novel layered cathode material P2-Na0.6Li0.11Fe0.27Mn0.62O2 (NLFMO) was designed and successfully synthesized. This NLFMO cathode not only delivers a large initial reversible capacity of 207.3 mA h g−1, but also shows a good cycling performance (104.2 mA h g−1 after 80 cycles) and rate capability (126.2 mA h g−1 at 1C). The ultrahigh capacity is contributed by both cationic (Fe3+/Fe4+ and Mn3+/Mn4+) and partially reversible anionic redox (O2−/On−) reactions, revealed by in situ X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) techniques. Moreover, no detrimental P2–O2 phase transition was observed in ex situ X-ray diffraction (XRD) patterns, confirming the high structural stability during Na+ deintercalation/intercalation processes. These results provide valuable information about the high-energy density layered cathode materials based on anionic redox reactions for NIBs.
研究领域:
材料科学
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电化学
·
能源存储
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无机化学
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固体化学
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 58
·53319-53323
·
IF 3.289
Tiantian Gu,Min Zhou,Mengyun Liu,Kangli Wang,Shijie Cheng,Kai Jiang
A polyimide–MWCNT composite (PNP@CNT) synthesized from 1,4,5,8-naphthalenetetracarboxylic-dianhydride (NTCDA) and phenylene diamine (PDA) was investigated as a novel anode for aqueous Na-ion batteries. This composite demonstrates a high reversible capacity of 149 mA h g−1 at quite a low potential of −0.65 V (vs. SCE), superior rate capability and long-term cycling stability. The feasibility of PNP@CNTs in aqueous Na-ion full batteries is also confirmed in conjunction with the Na0.44MnO2 cathode, possibly serving as a high performance aqueous Na host anode for large-scale electric energy storage applications.
研究领域:
材料科学
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电化学
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能源存储
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纳米复合材料
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电池技术
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2013
·Vol. 29
·期 8
·1804-1808
·
IF 0.869
WANG Shun-Kui,LI Zhi-Jie,XIAO Xue-Zhang,FAN Xiu-Lin,CHEN Zhi-Wen,LI Shou-Quan,GE Hong-Wei,CHEN Li-Xin
The Na-Al-H complex hydride was prepared by reactive ball milling (NaH/Al+CeCl3) and (NaH/Al+CeCl3/yKH) (y=0.02, 0.04) composites under a hydrogen pressure of 3 MPa at room temperature, using NaH and Al powder as raw materials, as well as 2% (molar
fraction) CeCl3 and 2% CeCl3/y% KH (y=0.02, 0.04) as dopant, respectively. The de-/hydrogenation properties show that the addition of KH can effectively improve the dehydrogenation kinetics of second decomposition step for Na-Al-H system. The (NaH/Al+CeCl3/0.02KH)
composite can complete dehydrogenation process within 20 min at 170, with good de-/hydrogenation cycling performance at relatively low temperature (100-140). Calculation by Kissenger method shows that the addition of KH could decrease the apparent activation energy of second decomposition
step for Na-Al-H system, resulting in the decrease of desorption peak temperatures. Phase structure analysis shows that the enhanced second step dehydrogenation kinetics of Na-Al-H composite system is mainly ascribed to the lattice volume expansion of Na3AlH6 resulted
from the addition of KH.
研究领域:
材料科学
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氢能存储
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固态化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2020
·
IF 6.155
Haonan Cao,Meiqi Yu,Long Zhang,Zhaoxing Zhang,Xinlin Yan,Peng Li,Chuang Yu
Solution-synthesis method is attractive for solid electrolytes because it is a facile and scalable process to be used to permeate electrodes and to construct a thin electrolyte coating layer on active materials. In this work, we report Cl-doped Na 3 SbS 4 prepared via aqueous-solution approach. Besides decent ionic conductivity , the aqueous-solution approached electrolyte demonstrates an improved interfacial stability toward Na metal compared to the solid-state sintered one because of the residual hydrate, nanosized microstructure, and Cl incorporation. All-solid-state batteries using the solution-prepared electrolytes have enhanced cycling performance, though the performance still needs to be further improved.
研究领域:
材料科学
·
电化学
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储能
·
固态电池
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Xuan-Yu Yang,Hao-Nan Chen,Li-Juan Yue,Fei-Long Gong,Ke-Feng Xie,Shi-Zhong Wei,Yong-Hui Zhang
The design of novel functional nanostructures for advanced chemical engineering field is of great importance. In this work, Pd-modified Na-doped WO 3 nanorods are rationally designed for rapid and detection of hydrogen, which is a green and clean energy in modern industry. Notably, and H + as well as citrate ions play an important role in the formation of 1D nanorods, and the morphology formation mechanism is explored. Here, inspired by the novel Pd-modified Na-doped WO 3 nanorods structure, the Pd-400-Na/WO 3 NRs exhibit high sensing ability with ultra-high response to hydrogen (R a /R g = 218@25 ppm) and fast response time (3 s). The combination of experimental and theoretical results shows that Na doping effectively modulates the d-band center of Pd and enhances activation and desorption of H 2 on the Pd surface. The 1D porous structure also facilitates the diffusion of H 2 within the framework, and accelerate the charge transformation. Meanwhile, the surface Pd 0 sites are assigned as the surface active sites for H 2 adsorption and activation, and Pd 2+ sites facilitate the desorption process. Our work paves the new insights for the design of high performance H 2 sensing materials.
研究领域:
材料科学
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化学工程
·
纳米技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Haotian Liu,Kui Liu,Da Huang,Qin Yu,Cheng Liu,Jie Li,Yulong Liao,Dainan Zhang,Huaiwu Zhang
Herein, the dielectric properties of Na + doped Li 10 ZnTi 13 O 32 ceramics were investigated by first-principles computational prediction and combined with the solid-phase reaction method. Li 9.88 Na 0.12 ZnTi 13 O 32 obtained the best dielectric properties by sintering at 1050 °C for 4 h: ε r = 30.01, Q × f = 90,879 GHz (@7.8 GHz), τ f = 3.93 ppm/°C. In terms of extrinsic factors, the optimization of the densification, the creation of the second phase TiO 2, and the increase of the grain size resulted in better dielectric properties. Intrinsic factors indicate that the weakening of the damping behavior and the increase in the electron cloud density lead to a decrease in the dielectric loss. The increase in ion polarisation and the blue shift of the Raman wavenumber lead to a gradual increase in ε r . The temperature stability is optimized depending on the TiO 2 content. The optimized Li 9.88 Na 0.12 ZnTi 13 O 32 ceramics have unlimited applications in microwave communications.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Lv Hu,Hui Li,Fang Chen,Yating Liu,Jinzhu Wang,Cheng Ma
Chloride solid electrolytes possess multiple advantages for the construction of safe, energy-dense all-solid-state sodium batteries, but presently the chlorides with sufficiently high cost-competitiveness for commercialization almost all exhibit low Na-ion conductivities of around 10 −5 S cm −1 or lower. Here, we report a chloride solid electrolyte, Na 2.7 ZrCl 5.3 O 0.7 , which reaches a Na-ion conductivity of 2.29 × 10 −4 S cm −1 at 25 °C without involving overly expensive raw materials such as rare-earth chlorides or Na 2 S. In addition to the efficient ion transport, Na 2.7 ZrCl 5.3 O 0.7 also shows an excellent deformability surpassing that of the widely studied Na 3 PS 4 , Na 3 SbS 4 , and Na 2 ZrCl 6 solid electrolytes. The combination of these advantages allows the all-solid-state cell based on Na 2.7 ZrCl 5.3 O 0.7 and NaCrO 2 to realize stable room-temperature cycling at a much higher specific current than those based on other non-viscoelastic chloride solid electrolytes in literature (120 mA g −1 vs. 12–55 mA g −1 ); after 100 cycles at such a high rate, the Na 2.7 ZrCl 5.3 O 0.7 -based cell can still deliver a discharge capacity of 80 mAh g −1 at 25 °C.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Zhen Li,Jinglin Mu,Xiaozhong Wu,Jiwen Li,Hao Yin,Tong Zhou,Xiangyan Shen,Pengfei Zhou,Jin Zhou
Making CF x -based batteries rechargeable represents a superior promise route to dramatically boost of secondary battery systems due to the unprecedented theoretical capacity and specific energy density of CF x . However, this goal has been plagued by a fundamental challenge of the high dissociation energy and the non-uniform deposition of the discharge products, alkaline metal fluoride (e.g., NaF). Herein, a novel strategy of engineering the discharge product NaF is developed. The hybrid Cu@CF 0.88 cathode material delivers a reversible discharge capacity of 700.6 mAh g −1 at 20 mAh g −1 and an energy density of 1541.1 Wh kg −1 , corresponding to 81.4% of the theoretical value. At 200 mAh g −1 , it gives a reversible discharge capacity of 250.1 mAh g −1 after 10 cycles. The Cu nanoparticles serve as preferential nucleation sites, effectively regulating the nucleation, crystallization, and spatial distribution of NaF in the initial discharge process. More importantly, an in situ generated intermediate NaCuF 3 induces the reconstruction of NaF into a more readily decomposable and electrochemically active amorphous phase. This strategy remarkably improves the reaction reversibility of the Na/CFₓ batteries, while additional efforts are required to optimize the long-term cycling stability for practical applications.
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DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Wenwen Yin,Xing Zhi,Yanyan Li,Jiawei Ma,Bernt Johannessen,Fangxi Xie,Mingmei Wu
Sodium superoxide is considered the preferred discharge product for sodium-air batteries (SABs) due to the reversible electrochemistry of the O 2 /O 2 − redox pair and the consequent low charge overpotential. However, air cathodes of SABs based on mono-metal systems have not yet achieved optimal adsorption of the discharge products, leading to suboptimal performance of SABs. In this study, we present FeCo bimetallic alloy particles anchored on carbon nanotubes (FeCo/C) as a demonstration of a bimetal-based air cathode for SABs. Na-air batteries with FeCo/C cathode can achieve a low overpotential gap of 500 mV, a high discharge capacity of 3392.20 mAh g −1 , and excellent cyclic stability over 200 cycles (800 h). Ex-situ spectroscopy confirms the successful formation of sodium superoxide as the main discharge product, establishing a clear correlation between excellent performance and discharge product composition and verifying the effectiveness of the bimetallic alloy cathode. Theoretical calculations further reveal that the bimetallic-based air cathode exhibits improved adsorption of sodium superoxide, significantly enhancing the performance of SABs. This work pioneers the use of bimetal alloy strategies to optimize discharge products in SABs, paving the way for their practical application.
研究领域:
材料科学
·
电化学
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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）