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
·
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
·
材料科学
·
能源存储
·
电池技术
·
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
·
电化学
·
储能技术
·
固态离子学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wei Lu,Hongpo Liu,Shiquan Li,Jianhua Zhu,Yunfeng Chao,Zhuosen Wang,Yapeng Tian,Xinwei Cui
Sodium selenium (Na-Se) batteries are considered promising candidates for next-generation energy storage devices due to their high volumetric energy density. However, the Se cathode still faces the problems of the shuttling effect and sluggish selenium reduction kinetics. Improving the surface adsorption and catalytic process of selenium cathode can greatly solve the above issues and achieve excellent performance to enhance the application of Na-Se batteries. Herein, experimental and theoretical simulation results indicate that the boron and defects co-doped MXene (BD-MXene) could initiate the redistribution of electrons and improve the surface polarity, promoting chemical adsorption, thus effectively suppressing the shuttle effect. More importantly, the BD-MXene can promote the conversion between polyselenide, accelerating the electrochemical reaction kinetics of Sodium polyselenide. As a result, the obtained Se@BD-MXene exhibits a high rate performance of 502 mAh g −1 at 50 A g −1 (calculated based on Se@BD-MXene) and excellent cycling stability with a decay per cycle of 0.001 % over 4500 at 10 A g −1 . This work provides a viable strategy to design Se cathodes for Na-Se batteries with high-rate capability and long-term cycling.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
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
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 38
·22064-22071
·
IF 12.732
Wenda Zhang,Jie Feng,Fengqi Lu,Alberto J. Fernández-Carrión,Hui Fu,Xiaojun Kuang
Na-doped melilite-type silicate Sr2MgSi2O7 was reported to display high oxide ion conductivity. In this work, through multiple complementary techniques including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, solid-state 29Si and 23Na nuclear magnetic resonance spectroscopy, and DFT calculations of defect formation energies, we found that it is hard to replace Sr with Na in Sr2MgSi2O7, and the Sr2−xNaxMgSi2O7−0.5x compositions formed mixed crystalline Sr2MgSi2O7 and Na-containing glassy phases. AC impedance spectroscopy measurements indicated that the ionic conduction in Sr2−xNaxMgSi2O7−0.5x could be from Na+ ions in the glassy phase, instead of the oxide ions.
研究领域:
材料科学
·
固体离子导体
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无机非金属材料
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能源材料
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电化学
✓ 已验证
DOI
高影响因子
Research
·
2018
·
IF 0
Jianchao Sun,Yong Lu,Hao Yang,Mo Han,Lianyi Shao,Jun Chen
Na-CO 2 batteries have attracted significant attentions due to their high energy density and effective utilization of greenhouse gas CO 2 . However, all reported Na-CO 2 batteries employ excessive preloaded metal Na, which will lead to safety issues such as dendrite formation and short circuit. In addition, the charging mechanism of reported Na-CO 2 batteries is not very clear. Here we report the Na-CO 2 batteries, starting from the cathode of cheap Na 2 CO 3 and multiwalled carbon nanotubes (CNTs). Due to the effective electron transfer and high reactivity, the decomposition of Na 2 CO 3 and CNTs could take place under 3.8 V. The charging mechanism of 2Na 2 CO 3 + C → 4Na + 3CO 2 without any side reactions is revealed by in/ex situ techniques such as Raman, gas chromatograph, and optical microscope. Dendrite-free Na can quantitatively deposit on the Super P/Al anode because of large specific surface area and low nucleation barrier of the anode for Na plating. The batteries could deliver an energy density of 183 Wh kg −1 (based on the whole mass of the pouch-type batteries, 4 g) with stable cycling performance. This work reveals that safe rechargeable Na-CO 2 batteries could be constructed by cheap Na 2 CO 3 and multiwalled carbon nanotubes.
研究领域:
储能
·
电化学
·
材料科学
·
可持续能源
✓ 已验证
DOI
Advanced Science
·
2025
·
IF 14.1
Yanli Zhou,Ao Xu,Zhiqi Li,Yifei Wang,Jiawen Yan,Fuyi Jiang,Wei Liu,Xin Gu,Huan Pang,Jian Yang
Conversion-based metal sulfides/selenides anodes are promising for sodium-ion batteries (SIBs) owing to their high capacities and good electronic conductivity. However, their large volumetric variation during cycling often leads to rapid capacity decay, hindering commercial applications. Meanwhile, developing a low-cost and efficient synthesis strategy to enhance sodium storage remains challenging. Herein, defect engineering is introduced in bulk Fe 7 Se 8 (bulk-Fe 7 Se 8-x ) to fabricate a carbon-free and defect-rich anode. The optimized bulk-Fe 7 Se 8-x realizes remarkable fast-charging performance and good temperature adaptability, achieving excellent cyclic stability (384 mAh g −1 after 1300 cycles at 5 A g −1 and 25 °C, 170.6 mAh g −1 after 1000 cycles at 2 A g −1 and 0 °C, and 371.7 mAh g −1 after 500 cycles at 5 A g −1 and 40 °C) and ultrahigh rate capability (up to 40 A g −1 ), significantly surpassing reported Fe 7 Se 8 anodes. Reaction mechanism and reaction kinetics are elucidated through in/ex situ characterization, kinetics analysis, and DFT calculations. Furthermore, the exploration of full cells demonstrates their potential application of bulk-Fe 7 Se 8-x in SIBs. The universal strategy is also successfully applied to synthesize the high-performance, defect-rich bulk-Fe 7 S 8-x and bulk-CoSe 2-x , which provides an effective approach for other conversion-based anode materials.
✓ 已验证
产品关联
DOI
PubMed
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
·
可再生能源
·
光伏技术
✓ 已验证
DOI
高影响因子
Small
·
2025
·Vol. 21
·期 19
·2410703
·
IF 12.1
Chongyang Zhang,Weijia Guo,Xingchen Zhang,Yutian Lu,Zhenxing Yue
Tetragonal tungsten bronze (TTB)-structured ceramics exhibit extraordinary and fascinating dielectric properties due to their unique structural characteristics and abundant compositional tunability. The dielectric and ferroelectric properties are affected by commensurate or incommensurate modulated structures. Herein, the antiferroelectric-relaxor ferroelectric (AFE-RFE) transition in K 2- x Na x PrNb 5 O 15 ceramics with a TTB structure is successfully achieved by constructing incommensurate modulated structures, which are attributed to cation disorder and lattice distortion arising from Na + substitution. Compositions with x ≤ 0.2 exhibit antiferroelectric phases at ambient temperature, with two dielectric anomalies corresponding to ferroelectric-antiferroelectric and antiferroelectric-paraelectric transitions in the dielectric spectra. When x ≥ 0.4, the samples transition into relaxor ferroelectrics with one dielectric anomaly representing the ferroelectric phase transition. Excessive Na + substitution eliminates the AFE temperature plateau and enhances relaxation, as evidenced by the increased incommensurability parameter δ . Notably, the composition with x = 1.0, which has the maximum δ value of 0.255, achieves a high recoverable energy density of 4.65 J cm − 3 and maintains a stable energy storage efficiency exceeding 90%. This work proposes an intriguing strategy for achieving the AFE-RFE transition and provides critical experimental support for the comprehensive investigation of the antiferroelectric with TTB structures.
研究领域:
材料科学
·
铁电材料
·
介电材料
·
储能材料
·
晶体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Engineering
·
2021
·
IF 7.553
Qiangqiang Zhang,Quan Zhou,Yaxiang Lu,Yuanjun Shao,Yuruo Qi,Xingguo Qi,Guiming Zhong,Yong Yang,Liquan Chen,Yong-Sheng Hu
The low ionic conductivity of solid-state electrolytes (SSEs) and the inferior interfacial reliability between SSEs and solid-state electrodes are two urgent challenges hindering the application of solid-state sodium batteries (SSSBs). Herein, sodium (Na) super ionic conductor (NASICON)-type SSEs with a nominal composition of Na 3+2 x Zr 2– x Mg x Si 2 PO 12 were synthesized using a facile two-step solid-state method, among which Na 3.3 Zr 1.85 Mg 0.15 Si 2 PO 12 ( x = 0.15, NZSP-Mg 0.15 ) showed the highest ionic conductivity of 3.54 mS∙cm −1 at 25 °C. By means of a thorough investigation, it was verified that the composition of the grain boundary plays a crucial role in determining the total ionic conductivity of NASICON. Furthermore, due to a lack of examination in the literature regarding whether NASICON can provide enough anodic electrochemical stability to enable high-voltage SSSBs, we first adopted a high-voltage Na 3 (VOPO 4 ) 2 F (NVOPF) cathode to verify its compatibility with the optimized NZSP-Mg 0.15 SSE. By comparing the electrochemical performance of cells with different configurations (low-voltage cathode vs high-voltage cathode, liquid electrolytes vs SSEs), along with an X-ray photoelectron spectroscopy evaluation of the after-cycled NZSP-Mg 0.15 , it was demonstrated that the NASICON SSEs are not stable enough under high voltage, suggesting the importance of investigating the interface between the NASICON SSEs and high-voltage cathodes. Furthermore, by coating NZSP-Mg 0.15 NASICON powder onto a polyethylene (PE) separator (PE@NASICON), a 2.42 A∙h non-aqueous Na-ion cell of carbon|PE@NASICON|NaNi 2/9 Cu 1/9 Fe 1/3 Mn 1/3 O 2 was found to deliver an excellent cycling performance with an 88% capacity retention after 2000 cycles, thereby demonstrating the high reliability of SSEs with NASICON-coated separator.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
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
危险品化学品经营许可证（带存储）