Energy Storage Materials
·
2024
·
IF 18.9
Shaoming Feng,Lei Fan,Hao Zhou,Haomiao Li,Shuai Yan,Weixin Zhang,Yewei Guo,Bo Li,Kai Jiang,Kangli Wang
Liquid metal batteries (LMBs) with Na anode exhibit the advantages of low-cost, high-safety, long-lifespan, and easy scale-up, making them promising for large-scale energy storage applications. However, the high solubility of Na and its sluggish kinetics in discharge products result in severe self-discharge and low cathode utilization, significantly hindering the development of Na-based LMBs. In this study, a stable Na-Li dual cation LMB with metal Sb cathode is designed based on the in-situ displacement reaction between Na and molten salts of lithium halides electrolyte. This design effectively suppresses the self-discharge of the battery, and the multistage discharge mechanism of the dual-cation system enhances cathode utilization. Moreover, the self-healing property of the Sb cathode protects the electrode against volume expansion and degradation, enhancing cycling performance. The Na-Li| LiCl-KCl-NaCl |Sb cell was constructed and operated at 485 °C. The battery retained 97.02 % of its capacity after 800 cycles at 0.6 C, with a decay rate of 0.00373 % per cycle. Furthermore, the battery achieves a cathode material utilization of 89 % at 0.6 C. These improvements effectively promote the development and application of LMBs.
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DOI
高影响因子
Particuology
·
2025
·
IF 4.3
Yiying Wang,Dandan Shi,Yue Cao,Xing Han,Tianying Zhang,Kaipeng Zhong,Qi Zhao,Naicai Xu,Shaoju Bian
Driven by the increasing global demand for lithium, significant attention has been directed toward developing efficient technologies for lithium extraction from Salt Lake brines. Li 1.6 Mn 1.6 O 4 spinel shows high lithium selectivity and notable theoretical uptake capacity, indicating strong application potential in lithium extraction. However, the industrial application of this material is limited by its strong Jahn-Teller effect and manganese dissolution loss. In this study, LiOH and MnCO 3 were selected as the raw materials and La 2 O 3 was used as the doping modifier. The La 3+ -doped Li 1.6 Mn 1.6 O 4 precursor (La-LMO) was fabricated through hydrothermal and high-temperature solid-phase synthesis techniques. Then La 3+ doped H 1.6 Mn 1.6 O 4 lithium ion-sieve (La-HMO) was prepared by pickling. The materials' structure and morphology were examined using XRD, SEM, TEM, and XPS techniques. La 3+ doping does not alter the spinel structure of LMO but reduces Mn 3+ content, mitigates the Jahn-Teller effect, lowers the manganese dissolution rate, and enhances structural stability. Adsorption of Li + onto La-HMO follows pseudo-second-order kinetics and fits the Langmuir model, suggesting homogeneous monolayer adsorption driven by chemisorption. In the lithium extraction experiment from the brine of West Tai Kinel Salt Lake, La-HMO demonstrated high adsorption capacity and superior selectivity for Li + . After five cycles, La-HMO maintained an adsorption capacity of 33.10 mg/g, higher than the 26.80 mg/g for undoped HMO. The manganese dissolution rate dropped from 4.65% to 4.04%. The study significantly improved the adsorption properties and structural stability of HMO by doping La 3+ , which has broad application prospects in the separation and extraction of lithium resources in Salt Lake.
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产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-16
·
IF 36.3
Yuan Haoyang,Lin Wenjun,Tian Changhao,Buga Mihaela,Huang Tao,Yu Aishui
A high-proportion inorganic composite quasi-solid-state electrolyte was fabricated through the integration of high-speed defoamed mixers with in situ polymerization methodology.
The intermediate phase, which exhibits an affinity for anion adsorption, facilitates the partial dissociation of lithium-ion solvation structures, thereby enhancing transport kinetics.
The exceptional interfacial stability was demonstrated through a lithium-symmetric cell operating without short-circuiting for 6000 h, while the 5 V-class lithium metal cell maintained 80.5% capacity retention after 200 cycles in 0.5C.
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产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Mingjie Du,Xiaoqing Tian,Ran Ran,Wei Zhou,Kaiming Liao,Zongping Shao
The cycling performance of lithium–sulfur (Li–S) batteries, which is a major parameter determining the practical application of such an advanced high-energy-density battery system (1675 mA h g–1), is strongly affected by the properties of the cathodic sulfur hosts. As a desirable sulfur host, it should possess high surface area, good electronic conductivity, and superior physisorption and chemisorption to polysulfides. Here, by taking advantage of the magnesiothermic denitriding technology, the graphitic carbon nitride (GCN) with a tunable nitrogen content, surface area, and pore volume has been designed as a sulfur host for high-performance Li–S batteries. With a nitrogen content of ∼6%, a surface area of 594 m2 g–1, and a pore volume of about 2 cm3 g–1, the GCN-based host can retain sulfur and allow its reversible convention within cathodic region, thereby delivering a high capacity of 852.2 mA h g–1 at 0.5 C with a low capacity decay of 0.12% per cycle within 300 cycles. This work provides a feasible way to design nitrogen-doped carbon materials with tunable nitrogen content and enlightens the host material design for practical Li–S batteries.
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DOI
高影响因子
RARE METALS
·
2018
·Vol. 37
·期 6
·488-496
·
IF 1.5
He Zi-Jian,Fan Li-Zhen
High-performance solid polymer electrolyte (SPE) has long been desired for the next-generation high energy density and safe rechargeable lithium batteries. A SPE composed of 80 wt% lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), 20% poly(ethylene carbonate) (PEC) and a polyamide (PA) fiber membrane backbone was prepared by solution-casting method. This solid electrolyte exhibits quite high ionic conductivity and lithium ion transference number ( t + ), and excellent mechanical strength. The as-prepared solid electrolyte shows good wettability to porous electrodes during cycles, which is beneficial to form ionically conductive phase throughout porous electrodes. All-solid-state LiFePO 4 |Li cells assembled with the as-prepared solid electrolyte deliver a high initial discharge specific capacity of 125.7 mAh·g −1 and good cycling stability at 55 °C (93.4% retention at 1C after 200 cycles), and superior cycle performance. Outstanding electrochemical performance can be mainly ascribed to the improved ionic conductivity in the entire porous electrodes due to the good wettability of SPE.
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高影响因子
ChemSusChem
·
2017
·Vol. 10
·期 7
·1385-1389
·
IF 7.226
Hao Wan,Ya Mao,Zixuan Liu,Qingyou Bai,Zhe Peng,Jingjing Bao,Gang Wu,Yang Liu,Deyu Wang,Jingying Xie
As the first step during discharge, the mass transfer of oxygen should play a crucial role in Li–air batteries to tailor the growth of discharge products, however, not enough attention has been paid to this issue. Herein, we introduce an oxygen-enriching cosolvent, 1,2-(1,1,2,2-tetrafluoroethoxy) ethane (FE1), into the electrolyte, and investigate its influence on the discharge performance. The incorporation of this novel cosolvent consistently enhances the oxygen solubility of the electrolyte, and improves the oxygen diffusivity following a volcano-shape trend peaking at 50 % FE1. It is interesting that the discharge capacities obtained with the investigated electrolytes share the similar volcano trends as the oxygen transport under 50 mA g carbon −1 and higher current densities. The improved oxygen diffusion could benefit the volumetric utilization of the air cathode, especially at the separator side, probably owing to the fast oxygen transport to moderate its concentration gradient. Our results demonstrate the importance of oxygen provision, which easily becomes the capacity-determining factor. Graphical Got Oxygen? The enhancement of oxygen provision is achieved by incorporating 1,2-(1,1,2,2-tetrafluoroethoxy) ethane as the cosolvent in the electrolyte. The oxygen's diffusivity, rather than solubility, exerts the principal effect on discharge performance of the Li–air battery, especially at higher current density, owing to the ameliorated oxygen's accessibility, which improves the utilization ratio of the whole air cathode.
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高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 23
·1700693
·
IF 4.279
Kailiang Liu,Hongguang Sun,Shanmu Dong,Chenglong Lu,Yang Li,Junmei Cheng,Jianjun Zhang,Xiaogang Wang,Xiao Chen,Guanglei Cui
The increasing interest in Li–O 2 battery arises from its unparalleled theoretical energy density. Nevertheless, the poor reversibility of cathode reaction and unstable characteristic of Li anode hinder its further application. To address these issues, a high-performance sandwich-structured quasisolid polymer electrolyte (QSPE) is designed to meet the requirement of both cathode and anode. For the first time, lithiated Nafion ionomer (Li-Nafion) is introduced into Li–O 2 cell to separate “catholyte” and “anolyte.” Redox mediator (RM) is introduced into gel-like catholyte, based on polymethymethacrylate, to achieve high capacity and reversibility. Polypropylene carbonate is chosen as solid-state anolyte for enhancing interface stability of lithium anode. It is demonstrated that the QSPE exhibits excellent permselectivity to block RM shuttling, as well as good ionic conductivity and high electrochemical window. A solution mechanism formation of discharge product is demonstrated in the Li–O 2 cell with QSPE and the RM works well for cycles at room temperature. This sandwich-structured design strategy will provide a new pathway to promote the properties of Li–O 2 battery.
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高影响因子
RARE METALS
·
2022
·Vol. 42
·期 3
·875-884
·
IF 6.318
Wang Xin,Shen Xiu,Zhang Peng,Zhou Ai-Jun,Zhao Jin-Bao
In the polyoxyethylene (PEO)-based solid-state electrolytes, the low ionic conductivity of lithium ions limits its application in solid-state lithium batteries, so optimizing the conduction path of lithium ions is beneficial to improve the ionic conductivity. In this work, we report the use of hydrothermal carbon nano-sphere (HCS) modified glass fibers (GF) as a functional filler (GF@HCS) to improve the ionic conductivity of PEO composite solid-state electrolytes. The oxygen atoms in the hydroxyl groups on the surface of HCS can be complexed with Li ions as its transport sites, which means that it can promote the long-distance transport of Li ions along the glass fiber surface. With addition of 2 wt% GF@HCS fillers, the degree of crystallinity of PEO composite solid-state electrolyte is the smallest, and the ionic conductivity is significantly increased from 8.9 × 10 –5 to 4.4 × 10 –4 S·cm −1 at 60 °C. Moreover, the PEO composite solid-state electrolyte exhibits better lithium–metal interface stability in symmetric lithium batteries and superior rate performance in LiFePO 4 solid-state batteries. Graphical abstract
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高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Ziqi Guo,Weiwei Jiang,Chang-Zhong Liao,Chung-Kai Chang,Cunlei Zou,Wanyu Ding,Yong-Mook Kang,Jiliang Zhang
The chemical reaction of transition-metal oxides with Li ions can give much higher capacities than the intercalation of the commercial graphite in Li-ion batteries (LIBs). Yet, its lithiation process is usually oversimplified as a typical conversion reaction regardless of crystal structures of transition-metal oxides. Herein, we investigate the electrochemical performance of hexagonal NiO compared with the commonly used cubic NiO and other transition-metal oxides. Neither Li intercalation nor phase transformation is observed while hexagonal NiO starts to be lithiated, unlike other transition-metal oxides. Therein, the initial lithiation activates a conversion reaction confined to its surface producing ultrafine crystallites of ca. 5 nm. The unreacted NiO core does not maintain its single crystalline nature but forms the uniformly orientated crystallites . Further lithiation continues to reduce the size of the inner crystallites , accompanied by the formation of solid-electrolyte interface layers and loss of orientation. Complete lithiation yields ultrafine crystallites , and then this morphology is maintained during the following delithiation and subsequent cycles. This structural evolution inspires that the core-shell conversion reaction of transition-metal oxides enables their electrochemical stability to be extensively enhanced paving a novel way to properly manipulate the merit of conversion reaction in transition-metal oxides for the anode of LIBs.
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DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2018
·
IF 2.631
Feng Chen,Long Wu,Zeping Zhou,Jiajun Ju,Zhengping Zhao,Mingqiang Zhong,Tairong Kuang
Lignin is the most abundant and important macromolecule in organic matter and its yield is second only to cellulose. Lignin is abundant in source, low in price, and has a large number of active groups such as methoxy group and carboxyl group, so it has great utilization value. We used lignin as a carbon source to prepare porous carbon nanosphere (PCN) materials, and in-situ synthesized the MoS 2 on its surface. The high specific surface area (∼462.8 m 2 /g), large pore volume and good electron conductivity of the porous carbon scaffold facilitated the reversible electro-chemical reaction of S towards metallic Li, and thus the nano-hybrid showed a high specific energy and excellent cycle stability which still remained 520 mAh/g after 50 cycles.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shuzhang Niu,Si-Wei Zhang,Donyang Li,Xin Wang,Xiaomei Chen,Run Shi,Nan Shen,Mengtian Jin,Xian Zhang,Qing Lian,Runqing Huang,Abbas Amini,Yusheng Zhao,Chun Cheng
Constructing a multi-functionally artificial interphase layer is an emerging strategy to possibly address the issues of inhomogeneous Lithium (Li) nucleation and dendrite growth. In this study, a silver@fullerene (Ag@C 60 ) interphase layer with lithiophilic-lithiophobic gradient was designed, which was fabricated by series of deposition of silver and fullerene (Ag@C 60 ) on Cu foam current collector (ACCF). In this way, the typically uncontrolled Li deposition process will become a highly nucleation-guided process, due to the preferentially induced Li nucleation of Ag nanoparticles, which will guide the Li deposition sandwiched in C 60 and Ag layers. While the top lithiophobic fullerene layer is beneficial for regulating uniform Li-ion flux and facilitating the formation of LiF-rich SEI layer, finally suppressing the top deposition of Li metal, due to the high nucleation energy barrier on fullerene. Consequently, Li@ACCF exhibits a low overpotential of 14 mV and an ultra-stable cyclic life for more than 2500 h in symmetric cells. Besides, it also displays excellent long-term cycle life and high-rate performance in lithium-metal full cells. This deliberate design of the “push–pull” Li could ensure the uniform Li deposition sandwiched fullerene and silver layers and provide a feasible and efficient approach to advance the practical use of lithium-metal anodes for high-energy–density batteries.
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高影响因子
Science China-Materials
·
2022
·Vol. 65
·期 11
·2967-2974
·
IF 8.64
Yu Xinrun,Hu Xianluo
Lithium-metal batteries (LMBs) with high energy densities have aroused intensive interest in electrical energy storage devices but suffer from the risk of thermal runaway, especially under harsh conditions of high temperature or thermal abuse. Pursuing intrinsically thermally stable electrolytes with higher performance and higher safety beyond commercial liquid electrolytes is a major challenge in this field. Here we report on a unique, highly durable sulfolane-based gel electrolyte constructed by a facile gelling strategy. This method takes advantages of thermotolerant sulfolane as a plasticizer and strong dipole-dipole interactions to achieve the gelation of polymer polyvinylidene fluoride/polyethylene oxide. We systematically investigated the influence of gelled sulfolane on gel formation, lithium plating/stripping, and solid electrolyte interphase. Benefiting from favorable interface engineering, the sulfolane-based gel electrolyte remarkably enhances the cyclic and safety performances of LMBs. When used in the Li/LiCoO 2 battery, the resulting gel electrolyte enables long-term cycling stability at high temperatures up to 90°C. Moreover, the thermal safety of practical Li/LiCoO 2 pouch cells (up to 190°C) has also been demonstrated by accelerating rate calorimetry. These results contribute to the development of high-safety LMBs that require abuse tolerance, high energy, and long calendar life.
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高影响因子
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