JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Chongyang Zhou,Han Sun,Qian Wang,Jakob B. Grinderslev,Dan Liu,Yigang Yan,Torben R. Jensen
Designing solid electrolytes for all-solid-state lithium batteries that can be compatible with high-voltage cathodes is challenging. Here we report that the nanocomposite Li 2 B 12 H 12 -Al 2 O 3 mechano-chemically treated for 120 h achieves an electrochemical stability window up to ∼ 3.8 V owing to the interfacial interaction via B-O bonds and a high lithium ionic conductivity , σ(Li + ) = 2.73 × 10 −5 S cm −1 at 30 °C. Moreover, this electrolyte shows high compatibility with the lithium metal anode as demonstrated by stable Li plating/stripping for 300 cycles. These electrolyte properties enable the first demonstration of a 3.8 V all-solid-state battery In 1.3 Li 0.3 |Li 2 B 12 H 12 -Al 2 O 3 (25 vol%)|LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) operating for 120 cycles with a rate of 0.2 C and at 30 °C, with a reversible specific capacity of 77.5 mAh g −1 and Coulombic efficiency of 99.8 %. The results demonstrate the potential of hydroborates as electrolyte for all-solid-state lithium batteries.
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高影响因子
APPLIED ENERGY
·
2023
·
IF 11.2
Ali Reza Kamali,Siyuan Li
Polyethylene terephthalate (PET) is one of the most widely used plastic materials, and therefore, its clean, efficient and low-cost valorization into high-value materials is of substantial economic and environmental interest. Here, for the first time, the utilization of molten salts for the facile, scalable and fast depolymerization of PET into terephthalic acid (C 8 H 6 O 4 ) is reported. It is asserted that the simple heat-treatment of PET in molten KCl-LiCl containing SnCl 2 in air leads to the green preparation of nanocrystalline terephthalic acid embedded with SnO 2 nanocrystals, with an excellent performance as the anode of lithium ion batteries (LIBs). The structural, morphological, thermal, surface, electrical and electrochemical characteristics of plastic-derived nanocomposites are evaluated by various techniques. The sample prepared at 500 °C (PDN-500) contains 28.3 wt% SnO 2 , and exhibits an enhanced bulk electrical conductivity of 447.3 S m −1 , and an excellent Li-ion storage capacity of 498 mAh g -1 after 500 cycles, corresponding to 1657 mAh per gram of SnO 2 . This performance is accompanied by an enhanced lithium ions diffusion coefficient of 8.51 × 10 −10 cm 2 s −1 recorded after 300 cycles, and a capacitive storage contribution of above 42 %. The sustainability of the presented molten salt approach is discussed from two complementary points of view, in terms of the clean conversion of waste plastics into high-performance anode materials for LIBs, as well as the facile and scalable depolymerization of PET, reducing the waste plastics in our environment. This article proposes an efficient and green strategy for the valorization of waste plastics into nanostructured SnO 2 @terephthalic acid for energy storage applications .
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2023
·
IF 4
Yitong Guo,Darong Liu,Bowen Huang,Libo Wang,Qixun Xia,Aiguo Zhou
In this study, highly pure Mo 2 CT x MXene was made from Mo 2 Ga 2 C by hydrothermal method in five different etching solutions (LiF, NaF, KF, NH 4 F or HF). The as-prepared multi-layer MXene samples were furthered delaminated by tetrabutyl-ammonium hydroxide (TBAOH) to increase the interlayer distance. The c -lattice parameter ( c -LP) was increased from 20.3 Å to 23.87 Å. Thereafter, the electrochemical properties of Mo 2 CT x MXene samples as anode of Li-ion batteries (LIBs) were investigated. The multilayer Mo 2 CT x MXene made by KF + HCl etching had some residual K + on the surface and had higher discharge specific capacity (32.7 mA h/g at the current density of 800 mA/g) than the samples made by other etchants. This is because that the residual K + on MXene surface pillar the multi-layer structure, which provides larger room for Li + storage and immigration. The Mo 2 CT x MXene after delamination with the c -LP of 23.87 Å presented a high discharge specific capacity of 239 mA h/g at the current density of 800 mA/g, which was 7.3 times higher than the discharge specific capacity of Mo 2 CT x MXene before delamination. The final discharge specific capacity was 118.83 mA h/g at 2000 mA/g after 100 cycles. The superior electrochemical performance of delaminated Mo 2 CT x MXene was attributed to the more easily accessible ion active sites between layers and the lower resistance. Therefore, the increasing of interlayer distance is the main direction to improve the performance of Mo 2 CT x as anode of LIBs.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Changsheng Guo,Yao Qian,Pengbi Liu,Qinglei Zhang,Xianhua Zeng,Zhiwei Xu,Songnan Zhang,Nan Li,Xiaoming Qian,Feiyue Yu
To coordinate the trade-off between the separation and permeation of the nanofiltration membrane for the separation of Mg2+/Li+, we regulated poly(ethyleneimine)/piperazine interface polymerization parameters to construct a positively/negatively charged ultrathin Janus nanofiltration membrane at a free aqueous–organic interface. At the optimized interfacial polymerization parameters, 0.03 wt % of piperazine reacted with trimethylbenzene chloride prior to poly(ethyleneimine), forming a primary polyamide layer with fewer defects or limiting large-scale defects of the polyamide layer. The controlled subsequent reaction of poly(ethyleneimine) and trimethylbenzene chloride results in a Janus nanofiltration membrane, with one side enriched with the carboxyl groups, the other side enriched with the amine groups, and a dense polyamide structure in the middle. Under the optimum conditions, the positive potential of the rear surface of the prepared membrane was 14.57 mV, and the water contact angle reached 71.31°, while the negative potential of the front surface was −25.48 mV, and the water contact angle was 12.93°, confirming a Janus membrane with opposite charges and large hydrophilicity differences in the front and rear surfaces. With a high cross-linking degree, a 40 nm thick polyamide layer is 29.09% more thinner than the traditional polyamide membrane. The ultrathin Janus nanofiltration membrane showed an excellent separation factor (SLi,Mg of 18.26), stability, and water permeability flux (10.6 L·m–2·h–1·bar–1). The rejections to MgCl2, CaCl2, MgSO4, and Na2SO4 are measured above 90% at a nearly constant permeability of 10.6 L·m–2·h–1·bar–1, particularly stable rejections to MgCl2 and Na2SO4.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
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IF 5.2
Yuwen Gao,Shougui Wang,Fei Gao,Changqing Guo,Jipeng Dong,Guanghui Chen
The Li 1.6 Mn 1.6 O 4 driven lithium ion-sieve (LIS) is considered as a potential adsorbents for recovering Li + ions from brines owing to their good theoretical adsorption performance and excellent adsorption selectivity. However, the poor cycle stability and the decrease of adsorption capacity resulting from the manganese dissolution loss limit its practical applications. In this work, to mitigate this issue, several novel Al and Cr co-doped manganese LISs were prepared by a facile hydrothermal synthesis method, followed by the acid treatment. The characterization results show that Al and Cr ions are uniformly doped into the spinel crystal structure of LIS, and the introduction of Al and Cr ions can cause the crystal shrinkage, decrease the Mn 3+ content, and raise the mean valence of manganese in the co-doped samples, effectively improving their structural stability. Compared with un-doped ion-sieve H 1.6 Mn 1.6 O 4 , the optimal co-doped ion-sieve H 1.6 Mn 1.54 Al 0.02 Cr 0.04 O 4 with 2% Al doping and 4% Cr doping possesses a higher lithium adsorption capacity, lower manganese dissolution loss, and stronger cyclic stability. Additionally, the H 1.6 Mn 1.54 Al 0.02 Cr 0.04 O 4 possesses a high adsorption selectivity of Li + over Mg 2+ , Ca 2+ , K + and Na + . Furthermore, the lithium adsorption is determined to be a chemical and monolayer adsorption process on the prepared LIS. The good lithium adsorption capacity and adsorption selectivity as well as the good recyclability make the prepared Al and Cr co-doped LIS a promising adsorbent for the efficient lithium recovery form brines.
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高影响因子
Journal of the American Chemical Society
·
2023
·
IF 15
Feng Li,Xiaobin Cheng,Gongxun Lu,Yi-Chen Yin,Ye-Chao Wu,Ruijun Pan,Jin-Da Luo,Fanyang Huang,Li-Zhe Feng,Lei-Lei Lu,Tao Ma,Lirong Zheng,Shuhong Jiao,Ruiguo Cao,Zhi-Pan Liu,Hongmin Zhou,Xinyong Tao,Cheng Shang,Hong-Bin Yao
Solid electrolytes (SEs) are central components that enable high-performance, all-solid-state lithium batteries (ASSLBs). Amorphous SEs hold great potential for ASSLBs because their grain-boundary-free characteristics facilitate intact solid–solid contact and uniform Li-ion conduction for high-performance cathodes. However, amorphous oxide SEs with limited ionic conductivities and glassy sulfide SEs with narrow electrochemical windows cannot sustain high-nickel cathodes. Herein, we report a class of amorphous Li–Ta–Cl-based chloride SEs possessing high Li-ion conductivity (up to 7.16 mS cm–1) and low Young’s modulus (approximately 3 GPa) to enable excellent Li-ion conduction and intact physical contact among rigid components in ASSLBs. We reveal that the amorphous Li–Ta–Cl matrix is composed of LiCl43–, LiCl54–, LiCl65– polyhedra, and TaCl6– octahedra via machine-learning simulation, solid-state 7Li nuclear magnetic resonance, and X-ray absorption analysis. Attractively, our amorphous chloride SEs exhibit excellent compatibility with high-nickel cathodes. We demonstrate that ASSLBs comprising amorphous chloride SEs and high-nickel single-crystal cathodes (LiNi0.88Co0.07Mn0.05O2) exhibit ∼99% capacity retention after 800 cycles at ∼3 C under 1 mA h cm–2 and ∼80% capacity retention after 75 cycles at 0.2 C under a high areal capacity of 5 mA h cm–2. Most importantly, a stable operation of up to 9800 cycles with a capacity retention of ∼77% at a high rate of 3.4 C can be achieved in a freezing environment of −10 °C. Our amorphous chloride SEs will pave the way to realize high-performance high-nickel cathodes for high-energy-density ASSLBs.
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高影响因子
ACTA MATERIALIA
·
2023
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IF 9.4
Ruineng Ruan,Haibo Xiao,Wenjing Dong,Zhanghong Yu,Xunying Wang,Baoyuan Wang,Chen Xia,Hao Wang
Fast ionic transportation is in high demand for developing low-temperature solid oxide fuel cells (LT-SOFCs). Facing this challenge, a new H + /O 2− /Li + triple conductor is designed in this study from a lithium-metal oxide, spinel Li 4 Ti 5 O 12 (LTO). First-principle calculation based on density functional theory (DFT) reveals the proton transport barrier in LTO can be as low as 0.37 eV while the barrier for oxygen ion transportation is 0.94 eV. Using the designed LTO as the electrolyte and a typical cathode of lithium-ion battery, LiNi 0.8 Co 0.15 Al 0.05 O 2-δ , as the symmetrical electrodes, an all-lithium-metal-oxides-based LT-SOFC is constructed. High performance is achieved by the SOFC at 550–425 °C, i.e. 625 mW cm −2 at 550 °C, and a low activation energy of 0.60 eV is found with respect to the ionic conductivity of LTO at 550–475 °C. Further study confirms the dual O 2− /H + conduction of LTO via the application of proton and oxygen ion filters as well as the transference number test. Additionally, particular attentions are paid to the transport behavior of Li + in the cell via a charging process study and from XRD results. The possible contribution of triple conduction on fuel cell performance is discussed. This work demonstrates the great promise of triple H + /O 2− /Li + conducting lithium-metal oxides for LT-SOFC electrolyte development.
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高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Yuhan Ma,Rui Zhang,Liu Wang,Jiaxin Wu,Biao Chen,Yan Yu,Lingyun Li,Fang He,Chunsheng Shi,Naiqin Zhao,Chunnian He,Andrew Barnabas Wong
Polyethylene oxide (PEO)-based solid-state electrolyte (SSE) is attractive due to its excellent adhesion with electrodes and good processability. However, lithium dendrites easily penetrate PEO because of its soft nature, which results in inferior battery performance and safety issues. Here, a novel self-healing PEO-based SSE is prepared by incorporating 2 wt% amorphous three-dimensional carbon (3DC). This SSE possesses suitably low electronic conductivity for battery applications (on the order of 10 −9 S cm −1 ), which is five orders of magnitude lower than its ionic conductivity (10 −4 S cm −1 ) at 60 °C. In addition, the improved fluidity and strong adhesion between the 3DC and the PEO matrix contribute to the self-healing ability of SSE, which will repair the cracks of SSE formed during battery cycling. Moreover, this SSE shows enhanced ionic and thermal conductivities and mechanical strength, suppressing the formation and growth of lithium dendrites. As a result, this SSE exhibits excellent electrochemical stability, achieving 5000 h of stable cycles in lithium symmetric cell (0.1 mA cm −2 , 0.1 mAh cm −2 ) and 850 long-term stable cycles for the LFP//Li full cell at 1 C (0.31 mA cm −2 ).
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ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Yuqing Bai,Le Wei,Yuebin Lian,Zhihe Wei,Daqi Song,Yanhui Su,Xiong Zhu,Wenxuan Huo,Jian Cheng,Yang Peng,Zhao Deng
Li-CO2 batteries that integrate energy storage with greenhouse gas fixation have received a great deal of attention in the pursuit of carbon neutrality. However, cyclic accumulation of the insulative and insoluble Li2CO3 on the cathode surface severely restrains the battery cyclability, especially under a high depth of discharge/charge. Herein, we design and fabricate a microreactor-type catalyst by embedding Ru nanoparticles into the shells of mesoporous hollow carbon spheres. We show that both the hollow cavity and mesoporous shell are indispensable for concertedly furnishing a high activity to catalyze reversible Li2CO3 formation/decomposition. This unique structure ensures that the Ru sites masked by exterior Li2CO3 deposits during charging can resume the redox process of discharge by working with the prestored electrolyte to establish an inner reaction path. The thus fabricated Li-CO2 batteries demonstrate remarkable cyclability of 1085 cycles under 0.5 Ah g–1 and 326 cycles under 2 Ah g–1 at 1 A g–1, outshining most of the literature reports. This study highlights a smart catalyst design to boost the reversibility and cyclability of Li-CO2 batteries through an “in & out” strategy.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 10
·6613-6624
·
IF 2.1
Gong Huixia,Wang Liqin,Wang Jianshe,Liu Qingchao
Lithium-oxygen (Li-O 2 ) batteries have become one of the most promising next-generation energy storage systems due to their high theoretical specific capacity. However, Li-O 2 batteries still face the problem of high charging voltage due to incomplete decomposition of discharge products. Here, a nitrogen-doped hollow spherical carbon composite containing Ni/Co nanoparticles was prepared by hydrothermal and pyrolysis strategies, and used as positive catalyst for Li-O 2 batteries to adjust the morphology of the discharge product. The porous hollow carbon sphere provides sufficient space for the storage of discharge products. Nitrogen-doped carbon nanospheres can change the local charge density, improve the electron transfer performance, and reduce the resistivity of carbon nanospheres. In addition, the abundant M-N x active groups enhance the affinity of the positive electrode to the reaction intermediates, thus regulating the morphology of the discharge product Li 2 O 2 . Benefiting from the above synergistic advantages, the electrochemical performance of the Li-O 2 battery including round-trip efficiency, discharge capacity, and cycling stability is greatly improved. Graphical Abstract
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高影响因子
DESALINATION
·
2023
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IF 9.9
Ning Han,Yifei Li,Haisen Peng,Ruize Gao,Qiongqiong He,Zhenyong Miao,Keji Wan
With the continuous development of the global society, people's demand for lithium is increasing. Recovering valuable lithium from waste lithium-ion batteries and fly ash is essential for environmental protection and energy saving. We have developed a new imprinted capacitance deionization technology (N@Li + -IPDI), which can selectively recover lithium ion from acidic solution (pH = 2) under complex environment. The recovery capacity of N@Li + -IPDI electrode material was up to 20.26 mg/g. Separation of Li + from Na + , K + , and Al 3+ was achieved based on the size effect. Separation from Mg 2+ was due to the higher hydration energy of Mg 2+ (1940 kJ/mol) than Li + (510 kJ/mol). After 5 regeneration cycles, recovery effect of N@Li + -IPDI was 93.42 % of original. Through density functional theory (DFT) modeling, bond length of Li + -O was 2.04–2.05 Å, and adsorption energy of 2H12C4-Li + (−33.66 Kcal/mol) was the largest among the five ions. In addition, energy and structure of deprotonation process were studied, and the energy required for deprotonation was 6.33 kJ/mol, which was the reason Li + adsorption is difficult in acidic environment. This research provides a new green ion recovery technology with excellent selectivity , high adsorption and conductivity for Li + recovery in acid solution, to meet the challenge of growing demand for lithium.
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高影响因子
DESALINATION
·
2023
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IF 9.9
Qingyi Wang,Yuyang Wang,Yangxiang Huang,Huimin Wang,Yang Gao,Mingyu Zhao,Longdou Tu,Lixin Xue,Congjie Gao
To effectively separate Mg 2+ and Li + from high Mg 2+ /Li + ratio salt lake brine, positively charged thin film composite polyamide (TFC-PA) nanofiltration (NF) membranes were prepared by the interface polymerization involving polyethyleneimine (PEI) with benzenetricarbonyl chloride (TMC). In this work, the structures and performances of PEI based TFC-PA NF membrane prepared on polysulfone (PSF) ultrafiltration substrates from the normal interface polymerization process PSF(NIP), was compared with those on the same substrates from the reverse-phase interface polymerization (RIP) process PSF(RIP), and those on polyethylene substrates from RIP process PE(RIP). Results showed that PSF(RIP) showed improved Mg 2+ /Li + separation factor S Li/Mg from PSF(NIP) with an increased surface positive charge, but with greatly reduced water flux values due to reduced surface roughness , increased surface hydrophobicity , and decreased MWCO Stokes pore radius. PE(RIP) NF membrane showed not only higher Mg 2+ /Li + separation factor S Li/Mg , but also higher water flux values due to increased surface roughness, decreased PA cross-linking degree, reduced PA separation layer thickness, and increased MWCO Stokes pore radius. PE(RIP) NF membrane also showed high rejection rates to a variety of divalent metal salts with high separation factors S Li/Mg of 40–49, high brine permeability values of 10.5 L·m −2 ·h −1 ·bar −1 , and excellent chemical and operational stability.
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危险品化学品经营许可证（带存储）