DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Xiaodong Hu,Kelei Zhuo,Dong Sun,Quanzhou Du,Li Sun,Yujuan Chen,Guangyue Bai,Jianji Wang
Reasonable design of electrode materials to match ionic liquid electrolytes is important for the development of high-performance supercapacitors in the future. Herein, we demonstrate a nitrogen-doped agar-derived porous carbon (NAGC) electrode material with high specific capacitance and long cycling life, which was prepared using agar as precursor, potassium carbonate as activator, and melamine as nitrogen source via one-step activation doping method. The combined action of melamine and potassium carbonate can regulate and control the physical and electrochemical properties of the prepared materials. NAGC presents a high specific surface area (3228 m 2 /g) and micropores-dominated hierarchical porous structure , which can provide more adsorption sites and benefit rapid ions transport. The NAGC electrode in 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim][BF 4 ]) ionic liquid electrolyte has a specific capacitance of 183 F/g at 1 A/g and 91 % capacitance retention from 1 to 10 A/g. Additionally, the assembled device with NAGC as both positive and negative electrode material has a wide operating voltage (3.6 V) and high energy density of 70.2 Wh/kg at a power density of 1.81 kW/kg. Also, it possesses a capacitance retention of 83.3 % after 50,000 cycles. This work provides a simple and effective way to achieve porous carbon materials with high specific capacitance and long cycle life.
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
ACS Applied Energy Materials
·
2023
·
IF 6.4
Haoyang Zhao,Jun Zhang,Tianqi Yang,Zheyu Jin,Xinping He,Zhongwei Wang,Yang Xia,Yao Wang,Xinyong Tao,Wenkui Zhang
Aqueous lithium-ion batteries (ALIBs) are attracting intense attention because of the intrinsic nonflammable nature of the aqueous electrolytes. However, its own narrow electrochemical window has led to numerous problems such as dissolution of electrode materials, hydrogen evolution at the anode, and poor cycling stability. Here, we report an “overcrowded electrolyte” using 1,4-dioxane as an additive, which has lone pairs of electrons on the oxygen atom to disrupt the original water-hydrogen bonding network by forming intermolecular hydrogen bonds, thereby inhibiting the hydrogen evolution reaction (HER) and decreasing the water activity. Furthermore, a layer of crystalline Li2CO3 is coated onto the surface of the TiNb2O7 anode material by supercritical fluid CO2 technology. The dense hydrophobic Li2CO3 coating layer can serve as a physical protection, which effectively blocks the direct contact between electrolyte and electrode. Under the synergistic effect of those two aspects, HER is greatly suppressed and the interface stability is enhanced. As a result, LiMn2O4/TiNb2O7 full cells exhibit a high initial coulomb efficiency of 95% with a capacity retention rate of 92% over 500 cycles under 1 C rate. This work provides a fundamental understanding of the interfacial chemistry of ALIBs and makes an important step forward in the development of high-performance and low-cost ALIBs for practical applications.
研究领域:
电化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2019
·Vol. 30
·期 33
·335701
·
IF 3.399
Fei Wang,Chuqing Wang,Hong Chen,Wenlong Zhang,Rujia Jiang,Zhanheng Yan,Zhongyuan Huang,Haihui Zhou,Yafei Kuang
The iron oxide-based anode materials are widely studied and reported due to their abundance, low cost, high energy density and environmental friendliness for lithium ion batteries (LIBs). However, the application of LIBs is always limited by the poor rate capability and stability. In order to tackle these issues, a novel material with carbon-encapsulated Fe3O4 nanorods stuck together by multilevel porous carbon (Fe3O4@C/PC) is prepared through directly carbonizing the Fe-based metal-organic framework under a nitrogen atmosphere. This novel material shows a high specific capacity and rate performance. The initial specific capacity can reach 1789 mAh g−1 at a current density of 0.1 A g−1, and the specific capacity still remains 1105.3 mAh g−1 and 783.5 mAh g−1 after 150 cycles at the current densities of 0.1 A g−1 and 1 A g−1, respectively. Even under a current density as high as 12 A g−1, the specific capacity can achieve 309 mAh g−1 after 2000 cycles with an average attenuation rate of 0.019% per cycle. Overall, the simple strategy, low cost and high capacity can make the practical application possible.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 43
·21248-21254
·
IF 9.931
Sheng Wang,Jue Wang,Jingjing Liu,Hucheng Song,Yijie Liu,Pengfei Wang,Ping He,Jun Xu,Haoshen Zhou
Solid-state electrolytes (SSEs) are potential candidates for developing high-energy-density and safe all-solid-state lithium (Li)-metal batteries due to the elimination of most of the safety issues encountered with liquid electrolytes. However, unfortunately, dangerous Li dendrites still form in SSEs. Herein, we report a simple nano-polishing method to prepare a high-performance all-solid-sate Li–air battery that consists of an air cathode, Li metal anode and ultra-fine surface Li1.5Al0.5Ge1.5P3O12 (LAGP) electrolyte. Such a design effectively reduces the interface impedance of the battery and meanwhile creates an ultra-smooth/flat interface between the Li metal and LAGP electrolyte that can produce a uniform electric field across the interface, thus enabling a homogeneous metal Li-forming/deforming environment during discharge/charge processes. As a result, a long cycle life all-solid-state Li–air battery has been obtained at room temperature at 400 mA g−1 with a capacity limitation of 1000 mA h g−1. The experimental results reveal that Li dendrites are suppressed through eliminating protrusion-induced locally concentrated free electron density on the surface of Li metal. The present ultra-fine interface engineering may be robust enough to suppress Li-dendrites, providing new insights into the interface between the Li-metal and SSE to develop future all solid-state Li-metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yang Zhang,Junwei Meng,Keyi Chen,Qingping Wu,Xiaoxue Wu,Chilin Li
The frustrating interfacial issue between Li metal anode and solid electrolyte is the main obstacle that restricts the commercial promotion of solid-state batteries. The garnet-type ceramic electrolyte with high stability against metallic Li has drawn much attention, but it also suffers from huge interfacial resistance and Li dendrite penetration due to the unavoidable formation of the carbonate passivation layer and limited interface contact. Herein, we propose a facile and effective method of flame vapor deposition to spray candle soot (CS) coating on the garnet surface. It enables the reduction of the carbonate layer and the conversion to a highly lithiophilic interlayer especially when in contact with molten Li. The lithiophilicity is rooted in the enrichment of graphitic polycrystalline domains in CS, which can be chemically or electrochemically lithiated to form the ionic/electronic dual-conductive network containing LiC6 moieties. The CS interlayer binds the Li metal with the garnet electrolyte tightly with gradual transition of Li-ion conductivity, leading to a significant reduction of the area-specific resistance to 50 Ω cm2 at 60 °C with high cycling and current endurance. Garnet-based symmetric cells and solid-state full cells conducting this strategy exhibit impressive electrochemical reversibility and durability under the preservation of the compact interface and smooth Li plating/stripping. The modified Li/garnet/FeF3 batteries exhibit a discharge capacity as high as 500 mA h g–1 and long-term cyclability for at least 1500 cycles (with capacity preserved at 281.7 and 201 mA h g–1 at 100 and 200 μA cm–2, respectively). This candle combustion strategy can be extended to more ceramic electrolytes compatible with high-temperature pretreatment.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Minghua Li,Deli Xu,Guoxian Wu,Sheng Wang,Hao Cheng,Jianshu He,Kangzhe Yu,Zhihan Liu,Yaqing Zhou,Bingbing Tian
All-solid-state lithium batteries (ASSLBs) have attracted significant attention due to their advantages of high energy density, enhanced safety profile, and potential for cost-effective manufacturing. At the same time, a superior anode that matches the ASSLBs is particularly important. In this work, we demonstrated chemically prelithiated MoS2 as an anode material for ASSLBs, which embeds lithium ions into a MoS2 matrix (LixMoS2) in advance to counteract lithium loss during the cycling. By a combination of LixMoS2, Li6PS5Cl (LPSC), and Li–In alloy, an all-solid-state lithium battery with superior long-term cycling and rate capability has been achieved. The cells exhibited a capacity retention rates of 93.4 and 90.8% after 100 cycles at both 0.2 and 1C, alongside a high specific discharge capacity of 480 mAh g–1 at 1C. Furthermore, when paired with a LiCoO2 (LCO) cathode, the full cell maintained a capacity retention rate of 95% over 300 cycles at 1C, with an average capacity loss of only 0.013 mAh g–1 per cycle. This work offers a feasible strategy for optimizing anode materials within sulfide-based ASSLBs, providing valuable insights for the development of high-performance ASSLBs for practical applications.
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
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Hao Wu,Wanbao Wu,Lin Xie,Chaochao Gao,Erlei Zhang,Jichuan Zhang,Peng He,Jiaheng Zhang
The high reactivity of sodium leads to significant safety challenges, while the unstable solid electrolyte interphase (SEI) further complicates its use in sodium-metal batteries (SMBs), collectively impeding their path to commercialization. A deep eutectic electrolyte (DEE) is introduced, which addresses these challenges by balancing high ionic conductivity with stable SEI formation. The introduction of N-methylacetamide enhances the nonflammability of the solvent and adjusts the SEI composition. The DEE accelerates the interfacial kinetics and promotes the formation of a uniform, inorganic-rich SEI with Na2S and NaF on the sodium anode. It also extends the electrochemical stability window to 4.8 V. Additionally, the DEE exhibits high ionic conductivity, enabling fast charging of the SMBs. In a Na3V2(PO4)3||Na cell, the electrolyte achieved a capacity retention of 96% after 1,500 cycles at a current density of 5 C. These findings offer important insights for advancing the commercialization of SMBs with enhanced safety features and superior electrochemical performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2024
·Vol. 14
·期 15
·2303229
·
IF 24.4
Ming Yang,Yujing Wu,Kaiqi Yang,Zhixuan Wang,Tenghuan Ma,Dengxu Wu,Fuqiang Xu,Li Yang,Pushun Lu,Jian Peng,Qifa Gao,Xiang Zhu,Zhiwen Jiang,Liquan Chen,Hong Li,Fan Wu
The rapid growth of lithium dendrites has seriously hindered the development and practical application of high-energy-density all-solid-state lithium metal batteries (ASSLMBs). Herein, a soft carbon (SC)-nano Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) (with high ionic conductivity and diffusion coefficient) mixed ionic and electronic conducting interface layer is designed to promote the rapid migration of Li + at the interfacial layer, induce the uniform deposition of lithium metal on nanoscale (nano) LLZTO ion-conducting network inside the interface layer, effectively suppress the growth of lithium dendrites, and significantly improve the electrochemical performance of ASSLMBs. LiZrO 2 @LiCoO 2 (LZO@LCO)/Li 6 PS 5 Cl(LPSCl)-nano LLZTO/Li ASSLMB achieves high current density (12.5 mA cm −2 ), ultra-high areal capacity (15 mAh cm −2 , corresponding to LZO@LCO mass loadings of 111.11 mg cm −2 ), and ultra-long cycle life (20 000 cycles). Therefore, the introduction of SC-nano LLZTO mixed conducting interface layer can greatly improve the interfacial stability between solid-state electrolyte (SSE) and lithium metal anode to enable dendrite-free ASSLMBs.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Cheng Zhu,Pan Hui,Li Fan,Duan Chun,Liu Hang,Zhong Hanyun,Sheng Chuanchao,Hou Guangjin,He Ping,Zhou Haoshen
Rechargeable Li-I 2 battery has attracted considerable attentions due to its high theoretical capacity, low cost and environment-friendliness. Dissolution of polyiodides are required to facilitate the electrochemical redox reaction of the I 2 cathode, which would lead to a harmful shuttle effect. All-solid-state Li-I 2 battery totally avoids the polyiodides shuttle in a liquid system. However, the insoluble discharge product at the conventional solid interface results in a sluggish electrochemical reaction and poor rechargeability. In this work, by adopting a well-designed hybrid electrolyte composed of a dispersion layer and a blocking layer, we successfully promote a new polyiodides chemistry and localize the polyiodides dissolution within a limited space near the cathode. Owing to this confined dissolution strategy, a rechargeable and highly reversible all-solid-state Li-I 2 battery is demonstrated and shows a long-term life of over 9000 cycles at 1C with a capacity retention of 84.1%.
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 Energy
·
2021
·
IF 17.881
Guijia Cui,Qingyu Dong,Zhuangzhou Wang,Xiao-Zhen Liao,Siqi Yuan,Meidan Jiang,Yanbin Shen,Hong Wang,Haiying Che,Yu-Shi He,Zi-Feng Ma
NASICON-type (Na super ionic conductor) Na 4 VMn(PO 4 ) 3 (NVMP) cathode material has attracted increasing attention due to its higher sodium de-/intercalation voltage, lower cost and greener resources compared with Na 3 V 2 (PO 4 ) 3 . However, the poor electronic conductivity limits the exploitation of its electrochemical performance. In this work, we achieved an ultrahigh rate capable and long cycle life NVMP/C-rGO composite using the simple and scalable spray-drying technique, in which low-fraction rGO nanosheets (2.14 wt%) highly dispersed and bridged the carbon shelled NVMP nanoparticles to form an effective electron conductive network. Benefiting from this favorable nano-architecture, the elaborately designed NVMP/C-rGO composite exhibited excellent performance as cathode in sodium ion batteries, delivering reversible capacities of 105.5 mA h g −1 at 1 C (1 C = 110 mA h g −1 ) and 102.6 mA h g −1 at 50 C with capacity retention of 90.6% (1 C) and 80.4% (50 C) over 500 cycles, respectively. This is the highest rate performance for Na 4 VMn(PO 4 ) 3 materials reported so far. This work provides a practicable tactic for fabricating advanced polyanion-type cathode materials which can be commercially scale up for sodium energy storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yueang Jin,Xueqian Zhang,Yongchun Zhu,Jiajia Ye,Yitai Qian,Zhiguo Hou
Vanadium oxide has been extensively studied as a host of zinc ion intercalation but still suffers from low conductivity, dissolution, and byproduct accumulation during cycling. Here, we hydrothermally synthesize the VO2@MXene Ti3C2 (MV) composite and find that in the MV//3 M Zn(CF3SO3)2//Zn system, the double hydroxide Zn12(CF3SO3)9(OH)15·nH2O (ZCOH) uniformly covers VO2 during the charging process and dissolves reversibly during the discharge process. In situ X-ray diffraction of the MV combined with in situ pH measurements reveals that ZCOH acts as a pH buffer during cycling, which is beneficial to the cycling stability of batteries. And the theoretical calculation indicates that the decomposition energy required by ZCOH on the MV surface is lower than that on pure VO2, which is more conducive to ZCOH dissolution. The coin battery exhibits high-rate performance of 65.1% capacity retention at a current density of 15 A g–1 (compared to 0.6 A g–1) and a long cycling life of 20,000 cycles with a capacity retention of 80.7%. For a 22.4 mA h soft-packaged battery, its capacity remains at 72.1% after 2000 cycles. This work demonstrates the active role of ZCOH in the electrochemical process of VO2 and provides a new perspective for exploiting this mechanism to develop high-performance aqueous zinc-ion battery vanadium oxide cathode materials.
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
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Bin Yang,Ziqiang Yang,Xueqian Zhang,Ya Zhao,Youyu Wang,Jiahao Chen,Sen Wang,Qing Zhao,Zhiguo Hou
Sodium metal battery is considered as one of the most promising energy storage/conversion devices due to their high energy density, and abundant sodium reserves. However, its development is hampered by the limited metallic utilization and detrimental sodium dendrite growth ascribed to the unstable, and fragile solid electrolyte interphase (SEI). Here, the high stable and modulus SEI is constructed with a component of a thin and dense layer of high Na-ion conductive Na 2 SiO 3 . It is in situ formed by the reaction between sodium anode and fish-skin structure separator, which exhibits a 3D porous polyvinylidene fluoride-based framework embedded with thin and robust vermiculite sheets. The robust interphase cannot only suppress sodium dendrite growth but also enable high energy density with small interphase-consumed Na ions in anode-less batteries. Accordingly, the as-assembled NaNi 1/3 Fe 1/3 Mn 1/3 O 2 //Na cell shows 83% capacity retention after 5000 cycles at a rate of 5 °C. Moreover, the proof-of-concept pouch cells deliver an energy density of 205 Wh kg −1 (based on the total mass of the battery), and high safety (not catching fire after punctured) under anode-less condition (with a low negative/positive capacity ratio of ≈2.1).
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）