المؤلفون: Penghao Song, Jian Yang, Chengyin Wang, Tianyi Wang, Hong Gao, Guoxiu Wang, Jiabao Li

المصدر: Nano-Micro Letters, Vol 15, Iss 1, Pp 1-14 (2023)

مصطلحات موضوعية: Iron sulfides, Heterostructure, Nitrogen-doped carbon nanotubes, Ester-based electrolyte, Ether-based electrolyte, Technology

الوصف: Highlights Iron sulfide-based heterostructure in situ hybridized with nitrogen-doped carbon nanotubes was prepared through a successive pyrolysis and sulfidation approach. The as-prepared Fe7S8/FeS2/NCNT electrode exhibits superior sodium storage performance in both ester and ether-based electrolytes. The structure advantages of the electrode contribute to high electrochemical performance in the ester-based electrolyte, while fast ionic diffusion and favorable capacitive behavior result in the robust sodium storage performance in the ether-based electrolyte.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2311-6706Test; https://doaj.org/toc/2150-5551Test

الوصول الحر: https://doaj.org/article/a3d94ff1cbdc432582105247cab5af56Test

المؤلفون: Xiao, Wei, Sun, Qian, Liu, Jian, Xiao, Biwei, Li, Xia, Glans, Per-Anders, Li, Jun, Li, Ruying, Li, Xifei, Guo, Jinghua, Yang, Wanli, Sham, Tsun-Kong, Sun, Xueliang

المصدر: ACS Applied Materials & Interfaces. 12(33)

مصطلحات موضوعية: Engineering, Materials Engineering, Chemical Sciences, Physical Chemistry, Affordable and Clean Energy, sodium-ion batteries, carbon anode, oxygenated functionalities, ether-based electrolyte, pseudocapacitive behavior, Nanoscience & Nanotechnology, Chemical sciences, Physical sciences

الوصف: The pursuit of a high-capacity anode material has been urgently required for commercializing sodium-ion batteries with a high energy density and an improved working safety. In the absence of thermodynamically stable sodium intercalated compounds with graphite, constructing nanostructures with expanded interlayer distances is still the mainstream option for developing high-performance carbonaceous anodes. In this regard, a surface-functionalized and pore-forming strategy through a facile CO2 thermal etching route was rationally adopted to engineer negligible oxygenated functionalities on commercial carbon for boosting the sodium storage process. Benefitted from the abundant ionic/electronic pathways and more active reaction sites in the microporous structure with noticeable pseudocapacitive behaviors, the functionalized porous carbon could achieve a highly reversible capacity of 505 mA h g-1 at 50 mA g-1, an excellent rate performance of 181 mA h g-1 at 16,000 mA g-1, and an exceptional rate cycle stability of 176 mA h g-1 at 3200 mA g-1 over 1000 cycles. These outstanding electrochemical properties should be ascribed to a synergistic mechanism, fully utilizing the graphitic and amorphous structures for synchronous intercalations of sodium ions and solvated sodium ion compounds, respectively. Additionally, the controllable generation and evolution of a robust but thin solid electrolyte interphase film with the emergence of obvious capacitive reactions on the defective surface, favoring the rapid migration of sodium ions and solvated species, also contribute to a remarkable electrochemical performance of this porous carbon black.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/0f9305q7Test

المؤلفون: Xiao, Wei, Sun, Qian, Liu, Jian, Xiao, Biwei, Liu, Yulong, Glans, Per-Anders, Li, Jun, Li, Ruying, Li, Xifei, Guo, Jinghua, Yang, Wanli, Sham, Tsun-Kong, Sun, Xueliang

مصطلحات موضوعية: Engineering, Materials Engineering, Chemical Sciences, Physical Chemistry, Affordable and Clean Energy, Sodium-ion batteries, Carbon anode, Microstructure, Ether-based electrolyte, Co-intercalation, Pseudocapacitive behavior, Macromolecular and Materials Chemistry, Nanotechnology, Macromolecular and materials chemistry, Materials engineering

الوصف: The porous carbon blacks rationally designed by a facile yet efficient NH3 thermal etching route have been investigated as anode materials in an ether-based electrolyte for sodium-ion batteries. The as-synthesized CBN35 carbon black with a 35% weight loss after NH3 thermal etching exhibited a large specific charge capacity of 352 mAh g−1 at 50 mA g−1 and a superior rate capability of 101 mAh g−1 at 16000 mA g−1, due to its highest microporosity, an appropriate surface area, a desirable microstructure, and a promising hybrid intercalation mechanism. Impressively, even cycled at 1600 mA g−1 over 3200 cycles, an outstanding reversible capacity of 103 mAh g−1 with a negligible 0.0162% capacity loss per cycle can still be achieved. Based on the multimodal characterizations including the structural probes of phase evolution for carbon materials, the electrochemical techniques, and the surface-sensitive XAS measurements, the exceptional electrochemical properties should stem from several merits of modified carbon black system. While the particular microporous structure provides relatively more accessible sodium storage sites, a novel hybrid intercalation mechanism in ether-based electrolyte would incorporate the sodium ion insertion into the disordered structure with the solvated sodium ion species co-intercalation into the graphitic phase. In addition to the diffusion-controlled redox reactions, the noticeable surface-induced pseudocapacitive reactions also significantly contribute to the charge storage upon sodiation and guarantee the rapid migrations of sodium ions/solvated compounds. This system further features a controlled emergence of a robust but thin solid electrolyte interphase layer, which could suppress the side reactions of active electrode with reactive electrolyte, maintain the fragile porous structure upon cycling, and facilitate the migrations of sodium ions and solvated sodium ion compounds.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/452347jvTest
https://escholarship.org/content/qt452347jv/qt452347jv.pdfTest

المؤلفون: Xiao, W, Sun, Q, Liu, J, Xiao, B, Liu, Y, Glans, PA, Li, J, Li, R, Li, X, Guo, J, Yang, W, Sham, TK, Sun, X

مصطلحات موضوعية: Sodium-ion batteries, Carbon anode, Microstructure, Ether-based electrolyte, Co-intercalation, Pseudocapacitive behavior, Macromolecular and Materials Chemistry, Materials Engineering, Nanotechnology

الوصف: The porous carbon blacks rationally designed by a facile yet efficient NH3 thermal etching route have been investigated as anode materials in an ether-based electrolyte for sodium-ion batteries. The as-synthesized CBN35 carbon black with a 35% weight loss after NH3 thermal etching exhibited a large specific charge capacity of 352 mAh g−1 at 50 mA g−1 and a superior rate capability of 101 mAh g−1 at 16000 mA g−1, due to its highest microporosity, an appropriate surface area, a desirable microstructure, and a promising hybrid intercalation mechanism. Impressively, even cycled at 1600 mA g−1 over 3200 cycles, an outstanding reversible capacity of 103 mAh g−1 with a negligible 0.0162% capacity loss per cycle can still be achieved. Based on the multimodal characterizations including the structural probes of phase evolution for carbon materials, the electrochemical techniques, and the surface-sensitive XAS measurements, the exceptional electrochemical properties should stem from several merits of modified carbon black system. While the particular microporous structure provides relatively more accessible sodium storage sites, a novel hybrid intercalation mechanism in ether-based electrolyte would incorporate the sodium ion insertion into the disordered structure with the solvated sodium ion species co-intercalation into the graphitic phase. In addition to the diffusion-controlled redox reactions, the noticeable surface-induced pseudocapacitive reactions also significantly contribute to the charge storage upon sodiation and guarantee the rapid migrations of sodium ions/solvated compounds. This system further features a controlled emergence of a robust but thin solid electrolyte interphase layer, which could suppress the side reactions of active electrode with reactive electrolyte, maintain the fragile porous structure upon cycling, and facilitate the migrations of sodium ions and solvated sodium ion compounds.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/452347jvTest

المؤلفون: Jinke Shen, Naiteng Wu, Wei Xie, Qing Li, Donglei Guo, Jin Li, Guilong Liu, Xianming Liu, Hongyu Mi

المصدر: Molecules; Volume 28; Issue 9; Pages: 3757

مصطلحات موضوعية: N-doped Fe 7 S 8, S co-doped carbon framework, ultrafast transport, ether-based electrolyte, sodium-ion batteries

جغرافية الموضوع: agris

الوصف: Fe-based sulfides are a promising type of anode material for sodium-ion batteries (SIBs) due to their high theoretical capacities and affordability. However, these materials often suffer from issues such as capacity deterioration and poor conductivity during practical application. To address these challenges, an N-doped Fe7S8 anode with an N, S co-doped porous carbon framework (PPF-800) was synthesized using a template-assisted method. When serving as an anode for SIBs, it delivers a robust and ultrafast sodium storage performance, with a discharge capacity of 489 mAh g−1 after 500 cycles at 5 A g−1 and 371 mAh g−1 after 1000 cycles at 30 A g−1 in the ether-based electrolyte. This impressive performance is attributed to the combined influence of heteroatomic doping and adjustable interface engineering. The N, S co-doped carbon framework embedded with Fe7S8 nanoparticles effectively addresses the issues of volumetric expansion, reduces the impact of sodium polysulfides, improves intrinsic conductivity, and stimulates the dominant pseudocapacitive contribution (90.3% at 2 mV s−1). Moreover, the formation of a stable solid electrolyte interface (SEI) film by the effect of uniform pore structure in ether-based electrolyte produces a lower transfer resistance during the charge–discharge process, thereby boosting the rate performance of the electrode material. This work expands a facile strategy to optimize the electrochemical performance of other metal sulfides.

وصف الملف: application/pdf

العلاقة: Materials Chemistry; https://dx.doi.org/10.3390/molecules28093757Test

الإتاحة: https://doi.org/10.3390/molecules28093757Test

المؤلفون: Huihun Kim, Milan K. Sadan, Changhyeon Kim, Ga-In Choi, Minjun Seong, Kwon-Koo Cho, Ki-Won Kim, Jou-Hyeon Ahn, Hyo-Jun Ahn

المصدر: Archives of Metallurgy and Materials, Vol vol. 66, Iss No 4, Pp 931-934 (2021)

مصطلحات موضوعية: sodium-ion batteries, sno2 anode, flexible electrode, nano sno2 particles, ether based electrolyte, Mining engineering. Metallurgy, TN1-997, Materials of engineering and construction. Mechanics of materials, TA401-492

الوصف: Sodium-ion batteries (SIBs) have attracted substantial interest as an alternative to lithium-ion batteries because of the low cost. There have been many studies on the development of new anode materials that could react with sodium by conversion mechanism. SnO2 is a promising candidate due to its low cost and high theoretical capacity. However, SnO2 has the same problem as other anodes during the conversion reaction, i.e., the volume of the anode repeatedly expands and contracts by cycling. Herein, anode is composed of carbon nanofiber embedded with SnO2 nanopowder. The resultant electrode showed improvement of cyclability. The optimized SnO2 electrode showed high capacity of 1275 mAh g–1 at a current density of 50 mA g–1. The high conductivity of the optimized electrode resulted in superior electrochemical performance.

وصف الملف: electronic resource

العلاقة: https://journals.pan.pl/Content/119272/PDF/AMM-2021-4-01-Hyo-Jun%20Ahn.pdfTest; https://doaj.org/toc/2300-1909Test

الوصول الحر: https://doaj.org/article/1a280411889d447b882480d258eaadefTest

المؤلفون: Xiaodan Li, Jinliang Li, Wenchen Zhuo, Zhibin Li, Liang Ma, Zhong Ji, Likun Pan, Wenjie Mai

المصدر: Nano-Micro Letters, Vol 13, Iss 1, Pp 1-14 (2021)

مصطلحات موضوعية: Iron selenide, Ether-based electrolyte, In situ visualization technique, Potassium-ion batteries, Technology

الوصف: Abstract As one of the promising anode materials, iron selenide has received much attention for potassium-ion batteries (KIBs). Nevertheless, volume expansion and sluggish kinetics of iron selenide result in the poor reversibility and stability during potassiation–depotassiation process. In this work, we develop iron selenide composite matching ether-based electrolyte for KIBs, which presents a reversible specific capacity of 356 mAh g−1 at 200 mA g−1 after 75 cycles. According to the measurement of mechanical properties, it is found that iron selenide composite also exhibits robust and elastic solid electrolyte interphase layer in ether-based electrolyte, contributing to the improvement in reversibility and stability for KIBs. To further investigate the electrochemical enhancement mechanism of ether-based electrolyte in KIBs, we also utilize in situ visualization technique to monitor the potassiation–depotassiation process. For comparison, iron selenide composite matching carbonate-based electrolyte presents vast morphology change during potassiation–depotassiation process. When changing to ether-based electrolyte, a few minor morphology changes can be observed. This phenomenon indicates an occurrence of homogeneous electrochemical reaction in ether-based electrolyte, which results in a stable performance for potassium-ion (K-ion) storage. We believe that our work will provide a new perspective to visually monitor the potassium-ion storage process and guide the improvement in electrode material performance.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2311-6706Test; https://doaj.org/toc/2150-5551Test

الوصول الحر: https://doaj.org/article/c1719acd9e4c48f495ba3092f27e9757Test

المؤلفون: Salimi, Pejman, Venezia, Eleonora, Taghavi, Somayeh, Tieuli, Sebastiano, Carbone, Lorenzo, Prato, Mirko, Signoretto, Michela, Qiu, Jianfeng, Proietti Zaccaria, Remo

المساهمون: Salimi, Pejman, Venezia, Eleonora, Taghavi, Somayeh, Tieuli, Sebastiano, Carbone, Lorenzo, Prato, Mirko, Signoretto, Michela, Qiu, Jianfeng, Proietti Zaccaria, Remo

مصطلحات موضوعية: biochar, ether-based electrolyte, lithium sulfide, lithium-metal free batterie, superior cycling stability, Settore CHIM/04 - Chimica Industriale

الوصف: The realization of a stable lithium-metal free (LiMF) sulfur battery based on amorphous carbon anode and lithium sulfide (Li2S) cathode is here reported. In particular, a biomass waste originating full-cell combining a carbonized brewer's spent grain (CBSG) biochar anode with a Li2S-graphene composite cathode (Li(2)S70Gr30) is proposed. This design is particularly attractive for applying a cost-effective, high performance, environment friendly, and safe anode material, as an alternative to standard graphite and metallic lithium in emerging battery technologies. The anodic and cathodic materials are characterized in terms of structure, morphology and composition through X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron and Raman spectroscopies. Furthermore, an electrochemical characterization comprising galvanostatic cycling, rate capability and cyclic voltammetry tests were carried out both in half-cell and full-cell configurations. The systematic investigation reveals that unlike graphite, the biochar electrode displays good compatibility with the electrolyte typically employed in sulfur batteries. The CBSG/Li(2)S70Gr30 full-cell demonstrates an initial charge and discharge capacities of 726 and 537 mAh g(-1), respectively, at 0.05C with a coulombic efficiency of 74%. Moreover, it discloses a reversible capacity of 330 mAh g(-1) (0.1C) after over 300 cycles. Based on these achievements, the CBSG/Li(2)S70Gr30 battery system can be considered as a promising energy storage solution for electric vehicles (EVs), especially when taking into account its easy scalability to an industrial level.

وصف الملف: ELETTRONICO

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000914395700001; volume:7; issue:2; journal:ENERGY & ENVIRONMENT MATERIALS; https://hdl.handle.net/10278/5057126Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85146350242

الإتاحة: https://doi.org/10.1002/eem2.12567Test
https://hdl.handle.net/10278/5057126Test

المؤلفون: ZHANG Fu-ming, WANG Jing, ZHANG Peng, SHI Zhi-qiang

المصدر: Cailiao gongcheng, Vol 49, Iss 1, Pp 11-22 (2021)

مصطلحات موضوعية: sodium ion battery, organic electrolyte, ether-based electrolyte, ester-based electrolyte, solid electrolyte interphase, Materials of engineering and construction. Mechanics of materials, TA401-492

الوصف: As the demand for large-scale batteries for electrical energy storage is increasing, sodium-ion batteries have attracted a lot of attention due to the abundance,cost-effectiveness of sodium resources and resemblance with lithium. In the key material selection of sodium ion battery, electrochemical performance and safety of a sodium-ion battery were affected by the electrolyte, which not only decides the electrochemical window and energy density, but also controls the electrode/electrolyte interfaces. In this paper, the basic requirements and classification of electrolyte of sodium ion battery were reviewed. The selective requirements of electrolyte in sodium ion batteries, the physicochemical properties of different sodium salts and the effects on solid electrolyte interface were discussed. Based on the compatibility of different solvents and materials as well as the energy storage mechanism of materials in different solvent systems, the solid electrolyte interface, rate and cycling performance obtained by materials in ether and ester based electrolytes were analyzed. Finally, the future development of sodium ion battery electrolyte in terms of matching with materials and key characterization methods were prospected.

وصف الملف: electronic resource

العلاقة: http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001121Test; https://doaj.org/toc/1001-4381Test

الوصول الحر: https://doaj.org/article/a92fa69e9eca4e159da778a7df530494Test

المؤلفون: Li, Xia, Lushington, Andrew, Sun, Qian, Xiao, Wei, Liu, Jian, Wang, Biqiong, Ye, Yifan, Nie, Kaiqi, Hu, Yongfeng, Xiao, Qunfeng, Li, Ruying, Guo, Jinghua, Sham, Tsun-Kong, Sun, Xueliang

المصدر: Nano Letters. 16(6)

مصطلحات موضوعية: Engineering, Materials Engineering, Chemical Sciences, Physical Chemistry, Affordable and Clean Energy, Lithium-sulfur batteries, molecular layer deposition, MLD, high temperature, carbonate based electrolyte, ether based electrolyte, Lithium−sulfur batteries, Nanoscience & Nanotechnology

الوصف: Lithium-sulfur (Li-S) battery is a promising high energy storage candidate in electric vehicles. However, the commonly employed ether based electrolyte does not enable to realize safe high-temperature Li-S batteries due to the low boiling and flash temperatures. Traditional carbonate based electrolyte obtains safe physical properties at high temperature but does not complete reversible electrochemical reaction for most Li-S batteries. Here we realize safe high temperature Li-S batteries on universal carbon-sulfur electrodes by molecular layer deposited (MLD) alucone coating. Sulfur cathodes with MLD coating complete the reversible electrochemical process in carbonate electrolyte and exhibit a safe and ultrastable cycle life at high temperature, which promise practicable Li-S batteries for electric vehicles and other large-scale energy storage systems.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/0bk7g8vtTest