JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Hanning Zhang,Mingxi Ren,Wei Jiang,Jie Yao,Limei Pan,Jian Yang
Sodium-ion batteries (SIBs) have attracted much attention owing to their abundant resources, low cost, suitable energy density and low potential window. However, SIBs still suffer from poor charge transmission kinetics caused by large Na + radius. Therefore, anode materials are considered as the key to the development of high-performance SIBs. Herein, hierarchical Sb 2 S 3 @m-Ti 3 C 2 T x composites with Sb 2 S 3 content of 40–60% were in-situ synthesized by a simple wet chemical method , in which amorphous spherical Sb 2 S 3 particles with a size of 150–200 nm nucleate and grow uniformly on the surface of m-Ti 3 C 2 T x with the formation of Ti-S bond. m-Ti 3 C 2 T x , as a three-dimensional conductive skeleton, not only improved the electron and Na + transportation, but also significantly inhibited the agglomeration and grain growth of Sb 2 S 3 particles, promoted the electrolyte penetration, and effectively absorbed the volume expansion of Sb 2 S 3 during charging and discharging cycles. As a result, the optimized 50% Sb 2 S 3 @m-Ti 3 C 2 T x showed good rate ability and cycling performance, including a capacity of 156 mAh g −1 after 100 cycles at 0.1 A g −1 and 72 mAh g −1 after 1000 cycles at 2 A g −1 with only 0.37% attenuation per cycle. This work provided a simple and effective strategy for the design and construction of MXene-based hybrids as SIBs anode.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Wentong Yang,Yixiong Ji,Wangxian Chen,Yining Pan,Zifei Chen,Shaoyang Wu,Salvy P. Russo,Yang Xu,Trevor A. Smith,Anthony Chesman,Paul Mulvaney,Fangyang Liu
Sodium (Na) doping is a well-established technique employed in chalcopyrite and kesterite solar cells. While various improvements can be achieved in crystalline quality, electrical properties, or defect passivation of the absorber materials by incorporating Na, a comprehensive demonstration of the desired Na distribution in CZTSSe is still lacking. Herein, a straightforward Na doping approach by dissolving NaCl into the CZTS precursor solution is proposed. It is demonstrated that a favorable Na ion distribution should comprise a precisely controlled Na + concentration at the front surface and an enhanced distribution within the bottom region of the absorber layer. These findings demonstrated that Na ions play several positive roles within the device, leading to an overall power conversion efficiency of 12.51%.
研究领域:
材料科学
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可再生能源
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光伏技术
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Yi Han,Yichao Wang,Dong Liu,Xiang Hui,Xiaoshuang Ma,Pengju Sun,Jianqiang Li,Zhipeng Xing,Zhenfu Zhang,Li-Feng Zhu
(K,Na)NbO3-based ceramics are promising lead-free piezoelectrics due to their excellent piezoelectric coefficient (d33) and high Curie temperature (Tc), but their poor mechanical properties limit high-reliability applications. To address this issue, 0.97K0.5Na0.5Nb0.95Sb0.05O3-0.03Bi0.5Na0.5ZrO3-0.5%wtBiFeO3-xZrO2(KNNS-xZrO2) textured ceramics were developed. Excessive ZrO2 improved mechanical performance, while <001>-oriented samples exhibited strong piezoelectricity. At x = 0.01, the ceramics achieved high values in the KNN system: d33 ∼ 326 pC·N−1, Hv ∼ 8.46 ± 0.14 GPa, E ∼ 172 ± 4 GPa, and fracture toughness KIC ∼ 1.70 ± 0.09 MPa·m1/2. Based on these outstanding properties, a KNNS-0.01ZrO2 piezoelectric wristband was fabricated to monitor human heart rate, producing stable current signals under different motion states. This work provides insights for reliable piezoelectric sensors and actuators.
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Yongsheng Huang,Weili Sun,Mingyu Zhi,Yi Wu,Kai Liu,Shijian Zheng,Qingqing Zhang,Sheng Dai
The poor electrode/electrolyte interface compatibility and inferior electrolyte oxidative tolerance in commercial ethylene carbonate (EC)-based electrolytes have hindered the development of high-voltage sodium-ion batteries (SIBs). In this study, an anionic chemistry strategy is proposed to strengthen Na + -anion coordination in the solvation sheath, and subsequently reduce the coordination numbers of EC solvents with the addition of NaClO 4 into NaPF 6 /EC/DEC electrolytes. Theoretical and experimental results confirm that the competitive coordination capabilities of Na + -ClO 4 − , with high binding energy, induce a wide electrochemical window up to 4.8 V, highly reversible Na + plating/stripping, and fast desolvation kinetics at the electrode/electrolyte interface, thereby hindering the continuous electrolyte decomposition. The optimized electrolyte PEDCF-0.20 demonstrates weakened Na + -EC coordination, increased interaction of Na + -anion in solvation, facilitating the formation of an inorganic-rich interface layer. Consequently, a 2.1 Ah cylindrical full cell of hard carbon//NaNi 1/3 Fe 1/3 Mn 1/3 O 2 delivers an impressive capacity retention of 93.7% after 300 cycles at an extended charging cutoff voltage of 4.1 V. This work provides a new insight into regulating the competitive coordination of anions to guarantee the remarkable cycling stability of high-voltage SIBs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Chem
·
2023
·
IF 23.5
Yuchen Ji,Jimin Qiu,Wenguang Zhao,Tongchao Liu,Zihang Dong,Kai Yang,Guorui Zheng,Guoyu Qian,Ming Yang,Qindong Chen,Khalil Amine,Feng Pan,Luyi Yang
The unstable and fragile solid electrolyte interphase (SEI) has restricted the application of Na metal anodes. Despite numerous research efforts being put into understanding its chemical composition and physical properties, direct observation of its formation remains a challenge due to the lack of temporal and spatial resolution. Here, through combined in situ probing techniques, we exhibit two pivotal stages associated with SEI instability during the often-neglected formation process. It is revealed that Na metal that is not uniformly passivated at the initial (passivating) stage will trigger unrestricted electrolyte decomposition and homogeneous components distribution during the subsequent (growing) stage. SEI with homogenously distributed components is found to have higher solubility than that with a layered structure evolved from a compact passivation layer. Through demonstrating an SEI dissolution model that is closely related to its formation process and compositional distribution, this work sheds light on an uncharted territory of Na metal batteries.
研究领域:
电化学
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材料科学
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能源存储
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电池技术
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界面化学
✓ 已验证
DOI
高影响因子
Nature Energy
·
2025
·
IF 60.1
Liu Yuan,Mao Huican,Bai Rui,Weng Suting,Zhang Qiangqiang,Rong Xiaohui,Chen Xiao,Zhang Chu,Han Shuai,Ding Feixiang,Wang Xuefeng,Lu Yaxiang,Zhao Junmei,Wei Fei,Chen Liquan,Hu Yong-Sheng
Side reactions between high-voltage cathodes and electrolytes remain a critical obstacle to the advancement of solid-state batteries—particularly for Na-ion systems—due to the higher Na + /Na redox potential. Despite recent extensive efforts, achieving a long cycle life is still challenging at the 4.2 V cut-off (versus Na + /Na). Here we design a room-temperature isotropic epitaxial growth to achieve a relatively uniform and dense metal–organic framework epilayer on Na 3 V 2 O 2 (PO 4 ) 2 F surfaces. Despite using polyethylene oxide, a typical ether-based solid polymer electrolyte, the cathode with isotropic epilayer exhibits enhanced cycling performance at the 4.2 V cut-off (retaining up to 77.9% of its initial capacity after 1,500 cycles). Combining experimental measurements and theoretical analyses, the key factor governing isotropic epitaxial growth behaviour is explicitly elucidated. Furthermore, we develop a self-designed high-sensitivity characterization method, in situ linear sweep voltammetry coupled with gas chromatography–mass spectrometry, to elucidate the failure mechanism of polyethylene oxide on Na 3 V 2 O 2 (PO 4 ) 2 F surfaces and and to reveal the excellent electrochemical stability of the isotropic epilayer. Interestingly, the universality of this approach has also been validated, highlighting its strong potential as an effective strategy for enabling high-energy-density batteries.
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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固态离子学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 43
·e202403318
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IF 1.9
Xinyue Zhang,Qiurong Chen,Yan Luo
Graphical In order to improve the stability and controlled release properties, NaClO 2 is microencapsulated based on emulsion crosslinking method adopting high biocompatibility sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) as shell material. The resulted sample is featured with selectivity and no secondary pollution, and brings about continuous degrading both liquid and gaseous formaldehyde. Sodium chlorite (NaClO 2 ) is a new type of air disinfectant, which can oxidize formaldehyde into carbon dioxide (CO 2 ) on account of releasing chlorine dioxide (ClO 2 ) gas under acidic condition. Unfortunately, NaClO 2 is prone to moisture absorption and decomposition when exposed to air. In this paper, NaClO 2 was microencapsulated based on emulsion crosslinking method for improving its stability and controlled release properties. Due to their high biocompatibility, sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) were selected as the wall material to prepare NaClO 2 -SA/CMC-Na composite microcapsules. The results showed that mean particle size of NaClO 2 -SA/CMC-Na composite microcapsules was about 225 nm, and their encapsulation ratio was up to 73.18%. In addition, the thermal stability and environmental tolerance of NaClO 2 are improved greatly through microencapsulating. It was proved by formaldehyde degradation testing that the efficiency of formaldehyde degradation using resulted samples can continue to increase after seven days in pH 6.5 environment, indicating their good controlled-release performance. Moreover, degradation efficiency on 30 µg/mL formaldehyde solution using the resulted microcapsules is up to 97.08%. Meanwhile, after 20 repetition degradation, NaClO 2 -SA/CMC-Na composite microcapsules can still continuously degrade formaldehyde gas. Therefore, NaClO 2 -SA/CMC-Na composite microcapsules reveal good stability and prolonged action on formaldehyde degradation.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 35
·25852-25864
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IF 3.9
Renzhong Xue,Xiaosong Liu,Kun Yang,Xiang Zhu
In this study, Cd1−xNaxCu3Ti4O12 (x = 0, 0.02, 0.04, 0.06, and 0.08) ceramics were prepared via a solid-state method. The phase composition, microstructure, and defect characteristics as well as optical, dielectric, and nonlinear properties of the ceramics were systematically studied. A CuO second phase was detected in doped samples. Grain boundary precipitates, Na with a low melting point, and oxygen and cation vacancies together caused the grain size to first increase and then decrease with an increase in the Na+ doping amount. The abundant emerging cation vacancies with an increase in Na+ content led to a decrease in the optical energy band. The sample with x = 0.04 exhibited the highest ε′ value (∼35 800) due to its largest grain size. Moreover, it possessed a lower tan δ (∼0.053) at 10 kHz, which was attributed to the multiplication of insulating grain boundaries. The huge dielectric constant originated from Maxwell–Wagner polarization at low frequencies and followed the internal barrier effect model. The lowest tan δ (∼0.037) and optimal nonlinear properties (α = 3.66 and Eb = 3.82 kV cm−1) were obtained in the sample with x = 0.08, which were associated with its highest grain boundary resistance and barrier height. Electric modulus data proved that dielectric relaxation at low frequencies was associated with grain boundaries. Dielectric anomalies in the high temperature range were attributed to oxygen vacancies.
研究领域:
材料科学
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物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Xu Qiuchen,Tang Shanshan,Li Nachuan,Wang Yan,Zhao Xiaoju,Zhang Xiao,Geng Shitao,Yuan Bin,Wang Shuo,Ouyang Zhaofeng,Liao Meng,Ma Linlin,Shang Ming,Sun Yifan,Peng Huisheng,Sun Hao
Rechargeable sodium-chlorine (Na-Cl 2 ) batteries show great promise in grid energy storage applications due to their high electrochemical performance. However, the use of highly corrosive thionyl chloride (SOCl 2 )-based electrolytes has severely hindered their real-world applications. Here we show a non-corrosive ester (methyl dichloroacetate) as a promising alternative to SOCl 2 , which can form a non-corrosive electrolyte with aluminum chloride and sodium bis(fluorosulfonyl)imide for high-performance rechargeable Na-Cl 2 batteries. The resultant battery shows a reversible capacity of up to 1200 mAh g −1 at a current density of 100 mA g −1 calculated based on the mass of carbon with a discharge voltage of ~2.5 V, a wide temperature range from −40 to 80 °C, and long-term cycling stability of 700 cycles at −40 °C, which outperforms conventional rechargeable Na-Cl 2 batteries and state-of-the-art Na metal batteries. The electrochemical performance and safety have been further extended to fibre batteries, which realize wearable applications of rechargeable Na-Cl 2 batteries. Based on donor number and charge transfer as two key descriptors, we further propose the design principle of organic electrolytes for rechargeable Na-Cl 2 batteries, which can fully unlock the designability and sustainability of organic solvents towards practical Na-Cl 2 batteries.
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
PubMed
高影响因子
NANO LETTERS
·
2024
·
IF 9.6
Xiangnan Li,Xinyu Tang,Mengdan Zhang,Ming Ge,Xiaojian Liu,Yuantao Cui,Yiwei Xu,Huishuang Zhang,Yanhong Yin,Shu-Ting Yang
The development prospect of layered transition metal oxides in sodium-ion batteries is excellent, but there are some problems, such as poor cycle stability and a complex phase transition. The spherical NaNi0.25Fe0.15Mn0.3Ti0.1Sn0.05Co0.05Li0.1O2 (SP-HEO) has been developed to address the challenges faced by O3-type layered oxide in sodium-ion batteries. The SP-HEO material is synthesized by piling and high entropy. The multiple strategies combine to enhance the electrochemical performance and air stability. The SP-HEO demonstrated a specific discharge capacity of 150.1 mA h g–1 at 0.1 C and 100.4 mA h g–1 at 7 C. Ex situ XRD analysis confirmed that the SP-HEO effectively retards complex phase transitions. This study not only introduces a high-entropy design for high tap density spherical storage materials but also dispels industry concerns regarding the performance of sodium ion layered oxide cathode materials.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
He Li,Jiali Jiang,Jianxing Huang,Yunhui Wang,Yueying Peng,Yiyong Zhang,Bing-Joe Hwang,Jinbao Zhao
In this study, one-dimensional Cu2–xSe nanorods synthesized by a simple water evaporation-induced self-assembly approach are served as the anode material for Na-ion batteries for the first time. Cu2–xSe electrodes express outstanding electrochemical properties. The initial discharge capacity is 149.3 mA h g–1 at a current density of 100 mA g–1, and the discharge capacity can remain at 106.2 mA h g–1 after 400 cycles. Even at a high current density of 2000 mA g–1, the discharge capacity of the Cu2–xSe electrode still remains at 62.8 mA h g–1, showing excellent rate performance. Owing to the excellent electronic conductivity and one-dimensional structure of Cu2–xSe, the Cu2–xSe electrodes manifest fast Na+ ion diffusion rate. Moreover, detailed Na+ insertion/extraction mechanism is further investigated by ex situ measurements and theoretical calculations.
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
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2021
·Vol. 37
·期 2
·286-292
·
IF 1.307
Hu Tao,Yang Weiwei,Wang Cheng,Bu Yali,Jin Feng,Zhang Dongwen,Gu Min,Liu Wenhui,Liang Qinghua,Liu Ruiqing,Feng Xiaomiao,Ma Yanwen
Sodiumion batteries(SIBs) have attracted intensive attention as promising alternative to lithium-ionbatteries(LIBs) for large scale energy storage systems because of low cost of sodium, similar energy storage mechanism and the reasonable performance. However, it is still a great challenge to search and design a robust structure of anode materials with excellent cycling stability and high rate capability for SIBs. Herein, multilayer porous vanadium nitride (VN) microsheets are synthesized through a facile and scalable hydrothermal synthesis-nitrogenization strategy as an effective anode material for SIBs. The multilayer porous VN microsheets not only offer more active sites for fast Na + insertion/extraction process and short diffusion pathway, but also effectively buffer the volume change of anode due to more space in the multilayer porous structure. The large proportions of capacitive behavior imply that the Na + charge storage depends on the intercalation pseudocapacitive mechanism. The multilayer porous VN microsheets electrodes manifest excellent cycling stability and rate capability, delivering a discharge capacity of 156.1 mA·h/g at 200 mA/g after 100 cycles, and a discharge capacity of 111.9 mA·h/g at 1.0 A/g even after 2300 cycles with the Coulombic efficiency of nearly 100%.
研究领域:
材料科学
·
能源存储
✓ 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）