ACS Sustainable Chemistry & Engineering
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2024
·
IF 7.1
Zhihong Cui,Peng Chen,Yuping Liu,Lu Zhang,Jingna Nie,Bo Shang,Changguo Chen,Guangsheng Huang,Dingfei Zhang,Fusheng Pan
Rechargeable magnesium batteries (RMBs) are considered as a potential rechargeable for replacing or assisting lithium metal batteries (LMBs). The Mg anode is prone to experiencing a native oxide layer in most electrolytes, resulting in an inferior overpotential and irreversible Mg plating/stripping behavior. Herein, we report for the first time that a novel Mg battery can be assembled using a non-nucleophilic Mg(HMDS)2-based electrolyte with I2 in a relatively large solvent molecule diglyme. An artificial interface phase of MgI2 was constructed in Mg(HMDS)2-AlCl3 electrolyte through the reaction of oxidant I2 and reductant Mg foil. This artificial interface phase is less sensitive to the electrolyte composition. The electrolyte decomposition and the Mg side reaction are effectively inhibited by the MgI2 interphase. In-situ MgI2 interphase significantly lessens the interface impedance and overpotential of the electrochemical Mg deposition/dissolution process. More importantly, the overpotential of the cell using Mg(HMDS)2-2AlCl3- I2/G2 electrolyte is decreased to 0.10 V vs Mg2+/Mg with high Coulombic efficiency of ∼99%, which is superior to the recently reported Mg(HMDS)2-based electrolytes. Besides, the first-principles calculations demonstrate that Mg is uniformly deposited on the MgI2 surface due to reversible Mg plating/stripping, low overpotential, and long-term cycle performance. Note that the as-fabricated novel Ni0.6Co0.4Se2|Mg(HMDS)2-AlCl3- I2/G2|Mg full battery delivers an initial specific capacity of 186 mAh g–1, and retains 120 mAh g–1 with Coulombic efficiency of 100% after 100 cycles. The novel Mg battery verifies the availability of the Mg(HMDS)2-AlCl3- I2/G2 electrolyte through electrolyte additive engineering. The high capacity and stable as-assembled Mg//Ni0.6Co0.4Se2 full cell confirms the compatibility of Mg(HMDS)2 and I2 as well as the utility of modified electrolyte and diselenides cathode materials in RMBs.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
Small
·
2018
·Vol. 14
·期 39
·1802694
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IF 9.598
Haiyan Lu,Fangxing Ai,Yanlong Jia,Chunyan Tang,Xinhe Zhang,Yunhui Huang,Hanxi Yang,Yuliang Cao
Hard carbon is considered as one of the most promising anodes in sodium-ion batteries due to its high capacity, low cost, and abundant resources. However, the available capacity and low initial Coulombic efficiency (ICE) limits the practical application of hard carbon anode. This issue results from the unclear understanding of the Na + storage mechanism in hard carbon. In this work, a series of hard carbons with different microstructures are synthesized through an “up to down” approach by using a simple ball-milling method to illustrate the sodium-ion storage mechanism. The results demonstrate that ball-milled hard carbon with more defects and smaller microcrystalline size shows less low-potential-plateau capacity and lower ICE, which provides further evidence to the “adsorption–insertion” mechanism. This work might give a new perspective to design hard carbon material with a proper structure for efficient sodium-ion storage to develop high-performance sodium-ion batteries.
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
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Jianyin Zhang,Xiuxia Lu,Xiaoxiao Shi,Haohao Liu,Limin Zhang,Xingwei Shi
Using (BiO) 2 CO 3 as the raw material and a simple molten salt process followed by ball-milling, mass manufacturing of 2D layered BiOCl nanoplates and carbon composites can be produced. XRD, XPS, SEM, and TEM were used to characterize the as-synthesised materials in great detail. Eletrochemical experiments demonstrate that after 100 cycles at a current density of 100 mA g −1 , the discharge capacity of the BiOCl@C composite electrode remains at 410 mAh/g, and average coulombic efficiencies can remain as high as 99 % after the first cycle. This work would establish a novel method for producing high-volumetric-energy–density BiOCl@C anode materials, which are likely to be viable candidates for application in lithium-ion batteries.
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
·
2025
·
IF 5.5
Yafang Zhao,Kai Zhang,Jun Zheng,Yanmei Zhao,Xiaokang Cai,Chao Liu,Ming Zhang,Zhongrong Shen
The closed pores resulting from distortion of the graphite domain structure are crucial for enhancing the reversible capacity of sodium storage in the hard carbon plateau region, as well as achieving a high initial Coulombic efficiency. In this study, we propose a method to enhance the reversible capacity of sodium storage in the hard carbon nanosphere plateau region by utilizing terephthalaldehyde (C8H6O2) and resorcinol (C6H6O2) for modulating closed pore size and graphite domain distribution through an aldol condensation reaction. The structural characterization reveals that an increase in the proportion of sp2 C in the precursor structure leads to graphite domains that are more easily twisted, leading to the formation of closed pores with smaller sizes during high-temperature pyrolysis. The target sample (PRHC-1500) exhibits a plateau capacity proportion of 59.23% and an initial Coulombic efficiency (ICE) of 81.14% in the half-cell. Additionally, the Coulombic efficiency remained at 100% even after undergoing 1000 cycles at a current density of 1600 mA g–1, thereby demonstrating exceptional cycling performance. This paper presents a valuable reference for modulating the closed-pore structure in hard carbon nanospheres by carefully selecting appropriate precursors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xin Xu,Yawen Qiu,Zichen Len,Zongquan Chen,Wenxuan Zhu,Wenqing Zhao,Yue Dai,Liang Cao,Hongbo Geng
Molybdenum disulfide (MoS 2 ) has garnered attention as a promising anode material for sodium-ion batteries due to its high theoretical capacity and unique lamellar texture. Nevertheless, unmodified MoS 2 suffers from inferior electrical conductivity, poor reaction reversibility, and suboptimal cycle life upon repeated sodiation/desodiation. In this study, a novel carbon-free V-heteroatom doping MoS 2 composite ( abbr. VMS) with hierarchical laurustinus-like structure was synthesized by a facile one-step hydrothermal process. Specifically, the rational doping of V-atoms can effectively modulate the intrinsic electronic structure of pure MoS 2 , resulting in enhanced Na-ion diffusion rate, improved reaction kinetics and reduced activation energy compared to bare MoS 2 . Additionally, the hierarchical structure of the VMS composite, with sufficient spacing, effectively mitigates mechanical stress and ensures the integrity of active materials. Consequently, the prepared VMS composite possesses exceptional reaction reversibility (average ICE value of 92 %) and remarkable capacity retention (92.1 % after 450 cycles at 10 A/g). These findings contribute valuable insights into the development of advanced MoS 2 -based anode for sodium ion batteries .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Xingyu Gao,Xiquan Qi,Xiangyu Zhao
Organic magnesium storage materials are intriguing as cathode materials for rechargeable magnesium batteries (RMBs) because of their flexible structure and the potential of fast Mg-ion diffusion kinetics. However, the dissolution of these materials in the electrolytes of the RMBs limits their application. Herein, the pentacenetetrone (PT) and its polymer poly(pentacenetetrone sulfide) (PPTS) are developed as cathode materials for RMBs. Given the benefit of its insoluble property in the Mg-ion electrolyte, the as-prepared PPTS cathode exhibits significantly enhanced reversible capacity, coulombic efficiency, and rate performance compared to PT. For instance, the high capacities of 241 mAh g–1 (100 mA g–1) and 131 mAh g–1 (2 A g–1) are obtained for the PPTS cathode, demonstrating a competitive rate performance of PPTS compared to previously reported organic cathodes of RMBs. In contrast, the soluble PT cathode exhibits much lower capacities of 163 mAh g–1 (100 mAh g–1) and 31 mAh g–1 (2 A g–1).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Batteries-Basel
·
2022
·Vol. 8
·期 9
·115
·
IF 5.938
Yuteng Gong,Chengxin Yu,Yu Li,Ji Qian,Chuan Wu,Ying Bai
Hard carbon (HC) has attracted extensive attention due to its rich material source, environmental non-toxicity, superior sodium storage capacity, and lower sodium storage potential, and is considered most likely to be a commercial anode material for sodium-ion batteries (SIBs). Nevertheless, the limited initial Coulombic efficiency (ICE) of HC is the main bottleneck hindering its practical application. To alleviate this issue, herein, a ZrO2coating was skillfully constructed by using a facile liquid phase coating method. The ZrO2coating can act as a physical barrier to prevent direct contact between the HC surface and the electrolyte, thus effectively reducing irreversible sodium adsorption and inhibiting the continuous decomposition of the electrolyte. Meanwhile, this fresh interface can contribute to the generation of a thinner solid electrolyte interface (SEI) with high ionic conductivity. As a result, the ICE of the ZrO2-coated HC electrode can be optimized up to 79.2% (64.4% for pristine HC). Furthermore, the ZrO2-coated HC electrode delivers outstanding cyclic stability so that the capacity retention rate can reach 82.6% after 2000 cycles at 1 A g−1(55.8% for pristine HC). This work provides a flexible and versatile surface modification method to improve the electrochemical property of HC, and hopefully accelerate the practical application of HC anodes for SIBs.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Green Energy & Environment
·
2024
·
IF 10.7
Wei Wu,Zhenglin Hu,Zhengfei Zhao,Aoxuan Wang,Jiayan Luo
Hard carbon (HC) is widely used in sodium-ion batteries (SIBs), but its performance has always been limited by low initial Coulombic efficiency (ICE) and cycling stability. Cathode compensation agent is a favorable strategy to make up for the loss of active sodium ions consumed by HC anode. Yet it lacks agent that effectively decomposes to increase the active sodium ions as well as regulate carbon defects for decreasing the irreversible sodium ions consumption. Here, we propose 1,2-dihydroxybenzene Na salt (NaDB) as a cathode compensation agent with high specific capacity (347.9 mAh g −1 ), lower desodiation potential (2.4–2.8 V) and high utilization (99%). Meanwhile, its byproduct could functionalize HC with more C O groups and promote its reversible capacity. Consequently, the presodiation hard carbon (pHC) anode exhibits highly reversible capacity of 204.7 mAh g −1 with 98% retention at 5 C rate over 1000 cycles. Moreover, with 5 wt% NaDB initially coated on the Na 3 V 2 (PO 4 ) 3 (NVP) cathode, the capacity retention of NVP + NaDB|HC cell could increase from 22% to 89% after 1000 cycles at 1 C rate. This work provides a new avenue to improve reversible capacity and cycling performance of SIBs through designing functional cathode compensation agent.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Xiaozhou Cao,Xiwen Wang,Xiangxin Xue
Graphical A Zn−Fe redox flow battery based on choline chloride ethylene glycol deep eutectic solvent is studied. The coulombic efficiency of the cell maintains at about 100 % more than 50 cycles and shows an anomalous variation due to the effect of RO − groups. The study shows the potential of deep eutectic solvent-based flow batteries for large-scale energy storage. Deep eutectic solvents (DESs) were considered as a potential electrolyte because of their low price, harmless to environment and wider electrochemical window potential compared to water. In this work, Fe(III)/Fe(II) and Zn(II)/Zn redox couples were used as the positive and negative active materials, respectively, in a DES system using choline chloride and ethylene glycol in a molar ratio of 1 : 2 (ethaline). The possible working mechanism of the battery was studied by cyclic voltammetry, spectroscopic and simulation methods. The effects of different temperatures, concentrations of zinc ions in the anolyte and current densities on battery performance were evaluated. The results showed that the designed zinc-iron battery should preferably be operated at a current density of 0.5 mA cm −2 and the temperature of 313~323 K, which will improve the energy efficiency and maintain a high coulombic efficiency. The variation of cycle performance test presents a different pattern from the usual batteries, which is due to the effect of RO − group. At 313 K and 0.5 mA cm −2 , the coulombic efficiency increases from 14.1 % to 100.2 % after 46 cycles, and then remains at about 100 % during the rest 54 cycles, which demonstrates a good cycle stability of DES-based zinc-iron battery.
研究领域:
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 28
·2102128
·
IF 18.808
Sichen Gu,Si-Wei Zhang,Junwei Han,Yaqian Deng,Chong Luo,Guangmin Zhou,Yanbing He,Guodan Wei,Feiyu Kang,Wei Lv,Quan-Hong Yang
Lithium metal anodes (LMAs) are promising for next-generation batteries but have poor compatibility with the widely used carbonate-based electrolytes, which is a major reason for their severe dendrite growth and low Coulombic efficiency (CE). A nitrate additive to the electrolyte is an effective solution, but its low solubility in carbonates is a problem that can be solved using a crown ether, as reported. A rubidium nitrate additive coordinated with 18-crown-6 crown ether stabilizes the LMA in a carbonate electrolyte. The coordination promotes the dissolution of NO 3 − ions and helps form a dense solid electrolyte interface that is Li 3 N-rich which guides uniform Li deposition. In addition, the Rb (18-crown-6) + complexes are adsorbed on the dendrite tips, shielding them from Li deposition on the dendrite tips. A high CE of 97.1% is achieved with a capacity of 1 mAh cm −2 in a half cell, much higher than when using the additive-free electrolyte (92.2%). Such an additive is very compatible with a nickel-rich ternary cathode at a high voltage, and the assembled full battery with a cathode material loading up to 10 mg cm −2 shows an average CE of 99.8% over 200 cycles, indicating a potential for practical use.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2019
·Vol. 25
·期 10
·4751-4760
·
IF 2.289
Li Ruopeng,Wang Bo,Gao Tiantian,Bao Changyuan,Song Rensheng,Wang Dianlong
A LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 binary inorganic electrolyte was prepared by using NaAlCl 4 ·2SO 2 as the functional additive and mixing with LiAlCl 4 ·3SO 2 . The obtained LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 not only has good non-flammability but also exhibits improved electrochemical performance for Li-metal batteries. With the addition of NaAlCl 4 ·2SO 2 , the fabricated Li/Cu cells using mixed inorganic electrolyte display higher average coulombic efficiency and more excellent cycling stability. Through scanning electron microscopy (SEM) characterization, it is demonstrated that the surficial morphology of Li-deposited layer is smoother in LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 binary electrolyte system than pure LiAlCl 4 ·3SO 2 . Furthermore, the fabricated Li/graphite cells using LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 binary electrolyte also show higher specific capacity and better cycling stability than using pure LiAlCl 4 ·3SO 2 electrolyte as well as the conventional organic electrolyte (1 M LiPF 6 in ethylene carbonate/dimethyl carbonate mixed solvent with 1:1 in volume). Consequently, LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 is proposed to have great potential for the safe and high-performance Li-metal batteries.
A LiAlCl 4 ·3SO 2 -NaAlCl 4 ·2SO 2 binary inorganic electrolyte is prepared by using NaAlCl 4 ·2SO 2 as the functional additive and mixing with LiAlCl 4 ·3SO 2 , which exhibits improved electrochemical performance for Li-metal batteries
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Yuanhui Cheng,Ningyuan Zhang,Qiuli Wang,Yinjian Guo,Shuo Tao,Zhijian Liao,Peng Jiang,Zhonghua Xiang
Zinc nickel flow battery is one of the most promising energy storage technologies for intermittently renewable solar and wind power. However, unpaired coulombic efficiency of nickel hydroxide cathode and zinc anode causes zinc accumulation in practical operation, which shortens the cycle life and impedes the commercialization of the battery. Here, we induce an additional O 2 /OH − redox couple integrated with NiOOH/Ni(OH) 2 as cathode energy storage materials . Benefit from the new reaction mechanism of the hybrid cathode, deposited zinc upon charge can be fully consumed during discharge, which completely avoids zinc accumulation issue. The new designed battery vigorously operates for more than 1100 h with negligible performance degradation , while the energy efficiency of pristine zinc-nickel flow battery dramatically reduces after 440 h. More importantly, the specific capacity of the cathode synchronously increases by 2.5 times and thereby the energy density . This system dexterously integrates dual redox couples into one hybrid unit at cathode complementing advantages of one another, demonstrating a broader method to solve the problem of unpaired coulombic efficiency in zinc based flow batteries.
研究领域:
能源存储技术
·
电化学工程
✓ 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）