Chemistry-An Asian Journal
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2022
·Vol. 17
·期 11
·e202200202
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IF 4.839
Yang Ling,Yuan Gao,Yan Peng,Shiyou Guan
Graphical Herein, we fabricated a novel porous SiOx/C nanohybrids , in which carbon and SiOx not only exhibited uniform distribution at the nanoscale, the stability of SiOx/C network can also be easily adjusted via controlling the hydrolysis and condensation rate of precursors in situ. Benefiting from the unique network structure and excellent structural stability, the SiOx/C(50) shows excellent electrochemical performance in LIBs. Silicon oxides (SiOx, 0
研究领域:
材料科学
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能源存储
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高影响因子
DALTON TRANSACTIONS
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2022
·Vol. 51
·期 31
·11909-11915
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IF 4.569
Siyu Chen,Yanan Xu,Hongbin Du
SiOx is one of the most promising anode materials for lithium-ion batteries (LIBs), due to its high theoretical capacity and low cost. However, the huge volume expansion and low electron/ion diffusion rate hinder its further commercial applications. Herein, a simple molecular polymerization method is developed to synthesize N,P co-doped SiOx–C composites (denoted as SiOx–C@CNT), in which SiOx and carbon are uniformly dispersed at the atomic level, and the embedded carbon nanotubes improve the lithium ion diffusion kinetics. Benefiting from the unique structure, the SiOx–C@CNT composites exhibit a high reversible capacity of 848 mA h g−1 at 0.1 A g−1 and long cycling stability (84.0% capacity retention after 1500 cycles). More impressively, the LiCoO2∥SiOx–C@CNT full battery also exhibits stable cycle life (only 4.7% capacity loss after 300 cycles at 1 C). These results show the application potential of the SiOx–C@CNT anode in LIBs.
研究领域:
材料科学
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能源存储
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高影响因子
Small
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2021
·Vol. 17
·期 42
·2102256
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IF 13.281
Zhibo Song,Shiming Chen,Yan Zhao,Shida Xue,Guoyu Qian,Jianjun Fang,Taohang Zhang,Chuanjiang Long,Luyi Yang,Feng Pan
Despite exhibiting high specific capacities, Si-based anode materials suffer from poor cycle life as their volume change leads to the collapse of conductive network within the electrode. For this reason, the challenge lies in retaining the conductive network during electrochemical processes. Herein, to address this prominent issue, a cross-linked conductive binder (CCB) is designed for commercially available silicon oxides (SiO x ) anode to construct a resilient hierarchical conductive network from two aspects: on the one hand, exhibiting high electronic conductivity, CCB serves as an adaptive secondary conductive network in addition to the stiff primary conductive network (e.g., conductive carbon), facilitating faster interfacial charge transfer processes for SiO x in molecular level; on the other hand, the cross-linked structure of CCB shows resilient mechanical properties, which maintains the integrity of the primary conductive network by preventing electrode deformation during prolonged cycling. With the aid of CCB, untreated micro-sized SiO x anode material delivers an areal capacity of 2.1 mAh cm −2 after 250 cycles at 0.8 A g −1 . The binder design strategy, as well as, the relevant concepts proposed herein, provide a new perspective toward promoting the cycling stability of high-capacity Si-based anodes.
研究领域:
材料科学
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能源存储
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高影响因子
MATERIALS LETTERS
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2023
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IF 3
Huaide Chen,Guojun Xu,Chenxin Jin,Jize Wu,Linwu Xiong,Xiaomin Li,Fugen Sun,Lang Zhou,Zhihao Yue
Silicon monoxide (SiO x , 0 < x < 2) has been limited in commercial applications due to its low electrical conductivity and large volume expansion effect. The existing method is to use liquid phase method for carbon coating treatment, but some problems such as uneven coating are still exist. Therefore, in this paper, C 2 H 2 is used as carbon source to coat SiO x material in a rotating chemical vapor deposition furnace to obtain hard carbon coated SiO x (SiO x @C) material. At the rate of 0.5C (1C = 2.1 A g −1 ), the discharge specific capacity of SiO x @C remained at 1116.8 mAh g −1 after 140 cycles, which is 539.8 mAh g −1 higher than SiO x .
研究领域:
材料科学
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能源存储
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EUROPEAN POLYMER JOURNAL
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2023
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IF 6
Xuexian Yu,Sainan Ma,Qinghua Zhang,Yang Hou,Qinggang He,Yingwu Luo,Xiang Gao
Stretchable lithium-ion batteries (LIBs) are key technologies for flexible/wearable electronics, yet low energy density and poor stability remain challenges. Here, we proposed a high-capacity stretchable SiO x /C anode with good stability, using triblock copolymer elastomer matrix poly(styrene-b-(n-butyl acrylate)-b-styrene) (SBAS) to provide stretchability (up to 1160%) and mechanical support. SBAS cross-links with SiO x to enhance interface adhesion. Single-walled carbon nanotubes (SWCNTs) were introduced to construct long-range conductive network and further improve mechanical strength. Besides, SBAS has strong π-π conjugation with SWCNTs, which keeps stability of the conductive network of integrated electrodes during stretching. When the deformation increases to 15%, resistance of the electrode only increases by 1.3 times. After 50 stretching-releasing cycles at 10% strain, it maintains a high capacity of 1442 mAh g −1 at 150 mA g −1 . After 100 cycles, it achieves an excellent capacity retention of 91.6%. This work provides new insight into the development of high-capacity anodes for stretchable LIBs.
研究领域:
材料科学
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能源技术
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纳米技术
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Haoqiang Wang,Xiaoqi Que,Yani Liu,Xingxing Wu,Qunhui Yuan,Jingyu Lu,Wei Gan
Silicon oxide (SiO x ) is an attractive anode material for lithium-ion battery due to its high specific capacity and low working potential. However, its scale utilization confronts with low electrical conductivity and large volume expansion. Herein, a yolk-shell structured N, S co-doped SiO x /C@void@C nanosphere is fabricated through a one-pot organosilica template mediated strategy. The co-doping of N, S enables SiO x /C@void@C with good conductivity, increased lithium storage capacity and improved interfacial contact. The hollow void between SiO x /C core and carbon shell effectively buffers the large volume change during the cycling. Consequently, the yolk-shell SiO x /C@void@C structures exhibit excellent electrochemical performance, with a high discharge specific capacity of 879 mAh·g −1 after 100 cycles at 0.1 A·g −1 , outstanding rate capability of 464 mAh·g −1 at 5 A·g −1 and excellent cycling stability of 584 mAh·g −1 after 500 cycles at 1.0 A·g −1 .
研究领域:
材料科学
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能源存储
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高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Weiting Tang,Li Feng,Xiujuan Wei,Guoyong Lai,Haopeng Chen,Zeheng Li,Xiuhuan Huang,Shuxing Wu,Zhan Lin
The large volume expansion hinders the commercial application of silicon oxide (SiOx) anodes in lithium-ion batteries. Recent studies show that binders play a vital role in mitigating the volume change of SiOx electrodes. Herein, we introduce the small molecule tannic acid (TA) with high branching into the linear poly(acrylic acid) (PAA) binder for SiOx anodes. The three-dimensional (3D) crosslinked network with multiple hydrogen bonds is formed by the incorporation of abundant hydroxyl groups with unique carboxyl groups, which increases the interfacial adhesive strength with SiOx particles. As a consequence, SiOx electrodes based on the PAA-TA binder show an excellent cycling performance with a high specific capacity of 1025 mA h g–1 at 500 mA g–1 after 250 cycles. Moreover, the SiOx||NCM811 full cell exhibits a reversible capacity of 143 mA h g–1 corresponding to 87.4% capacity retention after 100 cycles.
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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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Mengru Sun,Tiantian Fang,Huibin Liu,Yang Li,Wenchao Peng,Fengbao Zhang,Xiaobin Fan
Silicon oxides (SiO x ) have been widely recognized as a highly potential material for anodes in advanced lithium-ion batteries due to their remarkable reversible capacity. Nonetheless, the commercial utilization of SiO x anodes is still impeded by their low inherent electrical conductivity and substantial volumetric fluctuations. Herein, a layer-by-layer structure, composited of two-dimensional (2D) SiO x and nitrogen-doped carbon, is fabricated as a robust lithium-ion battery anode via the thermal pyrolysis of in situ formed siloxene/polyaniline. Nitrogen-doped carbon is distributed across both the interlayer and surface of 2D SiO x , yielding the composite anode with a stable electrode interface, superior structural integrity, and enhanced electrical conductivity. Therefore, the optimized 2D SiO x /nitrogen-doped carbon anode presents high reversible capacity (957.8 mAh/g at 0.1 A/g), ideal rate capability, and excellent cycling performance (696.4 mAh/g after 300 cycles at 1.0 A/g and 217.5 mAh/g over 1000 cycles at 5.0 A/g). This work provides a novel and simple approach to making 2D SiO x anodes hybridize with carbonaceous materials for lithium-ion batteries.
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材料科学
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能源存储
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高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Hao Liu,Xiao Zhang,Qiang Xu,Yanmei Jin,Shuliang Lv,Haihui Liu
Silicon-based anodes, with a theoretical capacity of ∼4200 mAh/g, are promising candidates for lithium-ion batteries. However, significant volume expansion during cycling leads to electrode fragmentation and poor cycling stability. This study presents a novel approach leveraging metal oxide coatings to simultaneously enhance the mechanical stability and the electronic and ionic diffusion capabilities of silicon-based anodes. TiO2–x/SiOx nanocomposites with a Maudan-like structure were synthesized via hydrolysis and subjected to high-temperature reduction in a H2/Ar atmosphere. The unique heterogeneous structure of these composites features oxygen vacancies in TiO2–x, which induce localized electronic states and generate embedded electric fields at the interface with TiOx. The oxygen vacancies provide additional pathways for electron transport and ion storage, while the embedded electric fields further optimize the electronic and ionic transport properties of the material. This synergistic effect significantly enhances the diffusion of electrons and lithium ions at the interface, effectively mitigating volumetric strain during electrochemical cycling. At a current density of 1 C, the TiO2–x/SiOx composite electrode maintains a capacity of 608.4 mAh/g after 1000 cycles. The synergistic effects of oxygen vacancies and embedded electric fields in TiO2–x/SiOx provide new avenues for silicon-based anode materials, particularly in electric vehicles and energy storage systems.
研究领域:
材料科学
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能源存储
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高影响因子
Nano-Micro Letters
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2025
·Vol. 17
·期 1
·1-16
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IF 36.3
Luo Cizhen,Zhang Huanrui,Sun Chenghao,Chen Xing,Zhang Wenjun,Mu Pengzhou,Xu Gaojie,Wu Rongxian,Lv Zhaolin,Zhou Xinhong,Cui Guanglei
Inspired by the microstructure of high-mechanical-property dragonfly wings, a phase separation structure design philosophy of in-situ solidified polymer electrolytes was first proposed, enabling superior mechanical properties of them.
By virtue of superior mechanical properties and the in-situ solidified preparation method, the failure behaviors of SiO x -based electrodes are effectively suppressed by the as-developed polymer electrolyte.
A dragonfly wing microstructure-inspired polymer electrolyte (denoted as PPM-PE) enables excellent electrochemical performance of SiO x -based electrodes in button-type and soft package full cells.
研究领域:
材料科学
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能源存储
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电池技术
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2021
·Vol. 31
·期 21
·2101145
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IF 18.808
Xiaoming Zhou,Yang Liu,Yang Ren,Tiansheng Mu,Xucai Yin,Chunyu Du,Hua Huo,Xinqun Cheng,Pengjian Zuo,Geping Yin
SiO x /C composites with a void-reserving structure are promising anodes for lithium-ion batteries. However, the facile and controllable synthesis of uniformly dispersed SiO x and carbon components, simultaneously incorporating ample voids, still remains a great challenge. Herein, a molecular polymerization strategy is devised to construct SiO x /C hollow particles for lithium-ion batteries. 3-aminopropyltriethoxysilane and dialdehyde molecules are judiciously engineered as silicon and carbon precursors to produce the polymer hollow spheres (PHSs) through a one-step aldimine condensation without any template and additive. A range of PHSs is obtained using terephthalaldehyde, glutaraldehyde, and glyoxal as the crosslinkers, demonstrating the high tunability of the strategy. Importantly, in situ pyrolysis of the PHSs warrants the homogeneous incorporation of SiO x ( < 5 nm) in carbon hollow capsids at a nanocluster scale. The obtained SiO x /C hollow spheres exhibit excellent Li + -ion storage behaviors, including cycling lifespan, coulombic efficiency, and rate performance. The superior performance is attributed to the well-dispersed SiO x nanoclusters in carbon substrate and the hollow structure. This molecular polymerization approach not only enables Si-based hollow composites effective and scalable anode materials but also opens up a new avenue for the controllable synthesis of template-free hollow architectures.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
Cell Reports Physical Science
·
2022
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IF 7.832
Fei Wang,Bo Wang,Zhongliang Yu,Chongyang Zhu,Peng Liu,Jingxuan Li,Bin Wang,Yu Zhou,Dianlong Wang,Hua Kun Liu,Shixue Dou
Due to the high energy density and low production cost, silicon oxide (SiO x ) is recognized as one of the most promising anode materials for lithium-ion batteries. However, the low initial coulombic efficiency and rapid capacity attenuation of SiO x anodes severely restricts its commercial application. Here, we propose a scalable strategy of pre-lithiation followed by a thermal passivation to improve the initial coulombic efficiency of SiO x anodes, boosting the large-scale commercial applications of the pre-lithiation strategy. First, the hollow porous SiO x @C spheres (Hp-SiO x @C) with adjustable shell thickness are designed using a self-transformation method, and then an air-stable pre-lithiated Hp-SiO x @C (ASP-Hp-SiO x @C) anode is prepared through an electrochemical pre-lithiation followed by a thermal passivation strategy. The ASP-Hp-SiO x @C anode delivers high initial coulombic efficiency of 99.2% and stable cycling performance after being exposed to the atmosphere with 10%–20% relative humidity for 48 h.
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高影响因子
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