Small
·
2023
·
IF 13.3
Weijing Zuo,Yawei Guo,Chi Zhang,Lan Zhang,Suojiang Zhang
Lithium–sulfur batteries (LSBs) with superior energy density are among the most promising candidates for next-generation energy storage techniques. Sulfurized polyacrylonitrile (SPAN) exhibits competitive advantages in terms of cycle stability, rate performance as well as cost. However, the preparation of high-loading SPAN electrodes is still challenging. Herein, inspired by mussel and cobweb, a high-loading SPAN electrode is enabled by the combination of polydopamine (PDA) coating and a bimodal distributed single-wall carbon nanotubes (SWCNT) slurry dispersed in polyvinylpyrrolidone (PVP), their synergistic effect not only constructs effective electron percolating networks within the electrode but also make high active material (AM) ratio possible. High areal capacity PDA@SPAN electrode (18.40 mAh cm −2 in the initial cycle) with negligible specific capacity attenuation as the mass loading increasement is realized through the facile slurry casting process. The dynamic N─H…O hydrogen bond is formed between PDA and PVP and the electrode integrity during charge/discharge is greatly strengthened. The battery with an areal AM loading of 7.16 mg cm −2 (5.16 mAh cm −2 ) retains 92.0% of capacity in 80 cycles and 87.18% in 160 cycles, and it also shows stable cycle performances even with a high loading of 19.79 mg cm −2 and lean electrolyte (3.28 µL mg −1 ).
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Li Luo,Kui Liang,Zeba Khanam,Xincheng Yao,Muhammad Mushtaq,Ting Ouyang,M.-Sadeeq Balogun,Yexiang Tong
Flexible lithium-ion batteries (FLIBs) are intensively studied using free-standing transition metal oxides (TMOs)-based anode materials. However, achieving high areal capacity TMO-based anode materials is yet to be effectively elucidated owing to the poor adhesion of the active materials to the flexible substrate resulting in low active mass loading, and hence low areal capacity is realized. Herein, a novel monolithic rutile TiO 2 microparticles on carbon cloth (ATO/CC) that facilitate the flower-like arrangement of TiO 2 nanowires (denoted ATO/CC/OTO) is demonstrated as high areal capacity anode for FLIBs. The optimized ATO/CC/OTO anode exhibits high areal capacity (5.02 mAh cm −2 @0.4 mA cm −2 ) excellent rate capability (1.17 mAh cm −2 @5.0 mA cm −2 ) and remarkable cyclic stability (over 500 cycles). A series of morphological, kinetic, electrochemical, in situ Raman, and theoretical analyses reveal that the rational phase boundaries between the microparticles and nanowires contribute to promoting the Li storage activity. Furthermore, a 16.0 cm 2 all-FLIB pouch cell assembled based on the ATO/CC/OTO anode and LiNiCoMnO 2 cathode coated on ATO/CC (ATO/CC/LNCM) exhibits impressive flexibility under different folding conditions, creating opportunity for the development of high areal capacity anodes in future flexible energy storage devices.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Linlin Hu,Xudong Zhang,Bing Li,Mihan Jin,Xiaohui Shen,Zongwu Luo,Zhanyuan Tian,Lizhi Yuan,Junkai Deng,Zhengfei Dai,Jiangxuan Song
Although silicon has the highest theoretical capacity among the existing anode materials, its practical application is highly hindered by huge interface stress arising from large volume change upon cycling. Herein, an efficient energy-dissipation engineering was harnessed on high-capacity silicon anodes through a synergized “static” (chemically crosslinking) and “dynamic” (physically crosslinking) binder. In this dual network, the disassociation of non-covalent hydrogen bonds greatly facilitates the dispersion and release of unfavorable stress, while the permanent chemical bonding network enables a deformable network to sustain the electrode structure. Such a strategy effectively avoids both materials and electrodes deterioration and promises a better Si-based anode: a high areal capacity of 2 mAh cm −2 with capacity retention of 91.3% after 200 cycles. Meanwhile, the energy-dissipation mechanism was further clarified by temperature-dependent FTIR and finite element simulations.
研究领域:
材料科学
·
电化学
·
锂离子电池
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 11
·期 22
·2100601
·
IF 29.368
Kai Yang,Luyi Yang,Zijian Wang,Bin Guo,Zhibo Song,Yanda Fu,Yuchen Ji,Mingqiang Liu,Wenguang Zhao,Xinhua Liu,Shichun Yang,Feng Pan
In order to prepare electrodes with high mass loading and areal capacities, the key issue is to achieve depolarization for both ion and electron transfer on the electrode material surface. In this work, through copolymerization of xanthan gum (XG) and amorphophallus konjac gum (KG) followed by an ice-templating method, aligned electrodes with high areal mass loading of active materials are prepared. In addition to firmly holding active materials together, the prepared KG–XG copolymer also facilitates improved effective porosity as well as homogeneous dispersion of conductive agents (i.e., CNTs). Consequently, with minimum inactive components (i.e., binder and conductive agents), the proposed electrode structure delivers good cycling stability and rate capability under high areal loading (as high as 200 mg cm −2 ). The excellent electrochemical performance can be attributed to the unique aligned structure where the robust conductive network provides an efficient electron and lithium-ion pathway, and the homogenous porosity is beneficial for the electrolyte percolation, hence the reduced polarization during charge transfer. In addition, this electrode preparation method is found to be universal as it is suitable for various types of anode and cathode materials.
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
Journal of Materiomics
·
2022
·
IF 8.589
Mingyuan Gao,Yuexin Liu,Xiaoyu Li,Ying Liu,Zixing Wang,Kefeng Cai
The design of supercapacitor materials with both high areal capacity ( C ) and high mass loading is vitally important for enhancing energy density ( E ). Herein, we prepared a NiCo OH/NiCoOOH composite film consisting of NiCo OH/NiCoOOH nanosheets on an expanded graphite paper (EGP) by using a facial anodization method. The as-prepared NiCo OH/NiCoOOH film exhibits ultra-high C of 11 mA·h·cm −2 at a mass loading of 165 mg·cm −2 , high rate capability of 71% and excellent cycling stability of 95% after 12 000 cycles. The outstanding performance is ascribed to the low-crystalline feature of the NiCo OH/NiCoOOH nanosheets, and the synergistic effect of the NiCo OH and NiCoOOH phases and high conductive porous EGP. An aqueous asymmetric supercapacitor, assembled with the NiCo OH/NiCoOOH on EGP and Fe 2 O 3 on EGP as positive- and negative-electrode, respectively, shows a highest E of 3.8 mW·h·cm −2 at a power density ( P ) of 4 mW·cm −2 and a maximum P of 107 mW·cm −2 at an E of 2.7 mW·h·cm −2 .
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
Energy Storage Materials
·
2021
·
IF 17.789
Pan Xu,Xinyu Hu,Xiaoyu Liu,Xiaodong Lin,Xiaoxiang Fan,Xueyang Cui,Cui Sun,Qihui Wu,Xiaobing Lian,Ruming Yuan,Mingsen Zheng,Quanfeng Dong
ABSTRACT Lithium dendrites, “dead lithium”, infinite volume change and fragile solid electrolyte interphase (SEI) appear indefinitely during Li plating/stripping process, which severely resist the practical application of lithium metal batteries (LMBs). Herein, by a functionalized framework, a phosphorized copper mesh as support skeleton, the lithium plating/stripping has been gridded into zoning effect, thus a desired lithium anode with excellent performance and practical application significance can be achieved. The framework-based lithium anode showed multi-functions with many advantages: enhancing lithium affinity, mitigating volume expansion, improving the current distributions, and inducing uniform deposition of Li + . Thus, a highly reversible and dendrite-free lithium anode under large capacity could be successfully realized, which has been verified by operando optical dynamic test and COMSOL simulation. As expected, symmetric-cell displays low overpotential (~210 mV) at ultra-high current density of 20 mA cm −2 and long lifespan (>1600 h) at ultra-high areal capacity of 50 mAh cm −2 , moreover, full-cell delivers high cycling stability (2 C, 500 cycles) and outstanding rate performance with a lower polarization.
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 Nano
·
2025
·
IF 16
Tengfei Wang,Keyi Chen,Guyue Li,Zhang Chen,Yanfeng Gao,Chilin Li
Regulating the artificial solid electrolyte interphase (SEI) and interfacial solvation structure of the electrolyte is crucial for developing rechargeable magnesium batteries (RMBs) with long cycling life, high current density tolerance, and fast ion transport capability operated under extreme environments, such as low temperatures. Herein, an effective strategy using oligomeric poly(3,4-dihydro-2H-pyran) (polyDHP) is proposed to modulate the interfacial solvation structure of RMBs, with the construction of an artificial SEI with rapid Mg-ion conductivity. The steric hindrance of polyDHP and its electrostatic interaction with Mg2+ reduce the solvent molecules in the first solvation shell, allowing polyDHP molecules to participate in coordination, thus lowering the desolvation energy barrier of Mg2+ and facilitating their deposition and stripping. Furthermore, due to the glass transition behavior, oligomeric polyDHP exhibits a more ordered structure with more continuous internal ion transport channels at −20 °C, therefore enabling stable RMB operation at lower temperatures for the first time. The corresponding Mg symmetric cells display a much lower overpotential (400 mV) and excellent cycling stability at both room temperature (over 5000 h at 5 mA cm–2 and 10 mA h cm–2) and a low temperature of −20 °C (over 1300 h at 3 mA cm–2 and 3 mA h cm–2). This strategy supports the stable cycling of CuS∥Mg full cells for over 200 cycles at −20 °C. This work reveals the importance of regulating the interfacial solvation structure, promoting the realistic applications of RMBs under extreme conditions.
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
Journal of Energy Chemistry
·
2024
·
IF 14
Mengjun Sun,Zhi Wang,Zhe Sheng,Xiang Zhen,Juhui Jiang,Xiaobing Wang,Jia Xie
In-situ polymerized solid-state lithium metal batteries have garnered significant attention due to their conformal interface contact and continuous pathways for lithium ion (Li + ) conduction. However, their electrochemical performance is often hindered by slow Li + transport within high-area-loading cathodes. This study presents an in-situ poly( ɛ -caprolactone) electrolyte with gradient molar mass (iGPCE) through lithium metal anode (LMA)-induced anionic ring-opening polymerization. Our electrochemical and kinetic analyses reveal that the iGPCE, characterized by low molar mass ( M ), significantly enhances Li + diffusion within high-area-loading cathodes and bulk electrolytes, thereby reducing concentration polarization and promoting uniform electrochemical reactions. Moreover, the high M region on LMA side acts as artificial solid electrolyte interphases, stabilizing the stripping and plating of lithium. Consequently, Li//LFP (20 mg cm −2 ) and Li//NCM622 (7.4 mg cm −2 ) utilizing iGPCE exhibit stable charge/discharge behaviors. This study offers a fresh approach to accelerate Li + diffusion kinetics of high-area-loading batteries and suggests broad applicability in other systems.
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 Nano Materials
·
2020
·
IF 0
Kunlei Zhu,Qian Li,Zhongmeng Xue,Qi Yu,Xicheng Liu,Zhongqiang Shan,Kai Liu
High cost, low safety, and low capacity are critical factors limiting the wide application of lithium (Li) batteries in our daily life. TiO2 and LiMn2O4 are both advanced electrode materials with advantages of low cost and high safety. Although TiO2/LiMn2O4 full batteries have been reported by several groups, these batteries only deliver low areal capacities (<1 mA cm–2), which is far from the criterion of commercially available Li-ion batteries (at least 2 mA cm–2). Here, we report high-areal-capacity TiO2/LiMn2O4 full batteries using a configuration containing anodes of mesoporous TiO2 spheres and cathodes of LiMn2O4 nanorods. Specifically, mesoporous TiO2 spheres are prepared by an improved solvothermal method, and their electrochemical performance is investigated using Li/TiO2 half-batteries. Because of their high specific areas, abundant pores, and stable structures, the mesoporous TiO2 spheres demonstrate remarkable cycling performances: after a test period as long as ∼1000 h, they still deliver a capacity as high as 150 mAh g–1 beyond 500 cycles at 1 C (1 C = 170 mAh g–1). LiMn2O4 nanorods are fabricated using β-MnO2 nanorods as the precursor, and their electrochemical performances are studied using Li/LiMn2O4 half-batteries as well. Furthermore, we design TiO2-limited TiO2/LiMn2O4 full batteries and investigate their electrochemical performances. The mesoporous TiO2 sphere/LiMn2O4 nanorod full batteries exhibit areal capacities as high as ∼4 mA cm–2, which is much higher than the values of conventional TiO2/LiMn2O4 full batteries and comparable to those of commercially available Li-ion batteries. This work could make a substantial step toward the commercialization of TiO2/LiMn2O4-based full batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
ADVANCED MATERIALS
·
2024
·
IF 27.4
Menghua Wu,Chuan Shi,Junwei Yang,Yu Zong,Yu Chen,Zhiguo Ren,Yuanxin Zhao,Zhao Li,Wei Zhang,Liyu Wang,Xinliang Huang,Wen Wen,Xiaolong Li,Xin Ning,Xiaochuan Ren,Daming Zhu
Resolving the sluggish transport kinetics of divalent Zn 2+ in the cathode lattice and improving mass-loading performance are crucial for advancing the zinc-ion batteries (AZIBs) application. Herein, PEO-LiV 3 O 8 superlattice nanosheets (PEO-LVO) with expanded interlayer spacing (1.16 nm) are fabricated to provide a high-rate, stable lifetime, and large mass-loading cathode. The steady in-plane expansion without shrinkage after the first cycle, but reversible H + /Zn 2+ co-insertion in PEO-LVO are demonstrated by operando synchrotron X-ray diffraction and ex situ characterizations. Moreover, the large capacity of PEO-LVO is traced back to the optimized Zn 2+ insertion chemistry with increased Zn 2+ storage ratio, which is facilitated by the interlayer PEO in lowering the Zn 2+ diffusion barrier and increased number of active sites from additional interfaces, as anticipated by density functional theory. Due to the optimized ion insertion resulting in stalled interfacial byproducts and rapid kinetics, PEO-LVO achieves excellent high mass-loading performance (areal capacity up to 6.18 mAh cm −2 for freestanding electrode with 24 mg cm −2 mass-loading and 2.8 mAh cm −2 at 130 mA cm −2 for conventional electrode with 27 mg cm −2 mass-loading). As a proof-of-concept, the flexible all-solid-state fiber-shaped AZIBs with high mass-loading woven into a fabric can power an electronic watch, highlighting the application potential of PEO-LVO cathode.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Guifeng Zhang,Weijun Zhou,Xiang Han,Qinghua Tian,Junling Xu,Jizhang Chen
With notable advantages of cost-effectiveness and inherent safety, aqueous zinc-ion batteries (AZIBs) offer significant potential for large-scale energy storage. Nevertheless, the electrodes produced using traditional binders via slurry coating methods face problems of inadequate mass loadings and vulnerability to exfoliation when subjected to deformations. In this study, all-in-one integrated electrodes consisting of polyaniline active material, carbon nanotube conductive network, and carboxymethyl cellulose mechanical framework are fabricated via a scalable and cost-effective approach. Through the synergistic interaction of these constituents, the optimized integrated electrode realizes exceptional flexibility, impressive mechanical strength (20.0 MPa), excellent electrical conductivity (628.5 S m −1 ), and favorable hydrophilicity. At a mass loading of 2 mg cm −2 , the integrated electrode offers considerably improved rate capability and cyclability compared to those electrodes based on binders. Under remarkable mass loadings of 8 and 14 mg cm −2 , the integrated electrodes can deliver large areal capacities of 1.25 and 1.58 mAh cm −2 at 0.2 A g −1 and remarkable capacity retentions of 99.1 and 94.8 % after 3000 cycles, respectively. Furthermore, a high-performance pouch-type battery is assembled using the integrated electrode and demonstrates strong resistance to mechanical deformations. The proposed strategy in this work provides a new opinion for designing high-mass-loading electrodes for AZIBs.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Xiong Liu,Guobao Xu,Shouji Huang,Lun Li,Yuan Wang,Liwen Yang
Aqueous zinc ion batteries (ZIBs) have drawn attractive attention due to low cost and high safety. However, further development and application of the aqueous ZIBs depend on cathode materials with large capacity, high rate and cyclic performances as well as high areal capacity. Herein, free-standing composite (named as NVO⊂CNTs 6:4) of Na x V 2 O 5 •nH 2 O (NVO) nanobelts and carbon nanotubes (CNTs) is fabricated by hydrothermal self-assembly followed vacuum filtration and freeze-drying processes. In virtue of porous and conductive architecture, the free-standing NVO⊂CNTs 6:4 composite exhibits good proton and Zn 2+ storage performance. When it is used as a cathode for the aqueous ZIBs, the battery exhibits large areal capacity of 3.03 mAhcm −2 at 3 mAcm −2 and superior high-rate capability of 210.4 mAhg −1 at 30 Ag −1 as well as long-term durability with capacity retention of 92.5% after 2500 cycles. Even at a high mass loading of 12 mgcm −2 , the battery can still deliver large capacity of 330.5 mAhg −1 at 2 Ag −1 . Our results disclose the NVO-based free-standing composite with high areal capacity, excellent rate and cyclic performances, highlighting its great potential application in high-performance aqueous ZIBs.
研究领域:
材料科学
·
电化学
✓ 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）