Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 16
·9716-9725
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IF 10.733
Yuan Tian,Yongling An,Shenglin Xiong,Jinkui Feng,Yitai Qian
Metal-based anode materials such as Sb, Sn, Bi, etc., attract great attention for battery use due to their high electronic conductivity and high energy density. However, the large volume expansion during the alloying–dealloying process results in fast performance decay. In this work, we successfully grow hierarchical Sb, Sn and Bi firmly on MXene paper via a facile one-step electrodeposition process in a green ethylene glycol-based system. As robust, flexible, free-standing and binder-free anodes for potassium-ion batteries, the hierarchical structure provides a short diffusion distance for potassium ions and buffer volume change during the potassiation/depotassiation process. Highly conductive and flexible MXene paper serves as an elastic current collector providing an electronic highway to facilitate electron transport and accommodate volume change during the cycling process. MXene@Sb delivers a high reversible capacity of 516.8 mA h g−1, a high rate capacity of 270 mA h g−1 at 500 mA g−1, and stable capacity retention with a capacity fading rate of only 0.042% per cycle. This work may also be interesting in relation to research on other rechargeable batteries, catalysts, sensors, etc.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Han Wang,Bingzhe Jia,Zhilin Zhao,Chunyan Luo,Xinming Wu
Two-dimensional (2D) materials used in potassium ion batteries (PIBs) have high theoretical capacitance and excellent rate characteristics. However, the origin of low diffusion of potassium ions and poor storage kinetics still remain challenge mainly due to the large size of potassium ions (0.138 nm) and narrow 2D interlayer spacing. Herein, the V 2 CT x -based hybrids including 1T-MoS 2 (1T -MoS 2 @V 2 CT x ) has been successfully constructed by the magneto-hydrothermal method and proved to be an eminent anode, which can make PIBs have high reversible capacity and eminent rate performance at the same time. Moreover, the combination of 2D 1T-MoS 2 and V 2 CT x not only significantly promotes the transfer of interfacial charges as well as accelerates the transmission and diffusion of electrons and K + , but also helps to alleviate the volume changes caused by the insertion/extraction of large-sized K + during the cycle, which makes the electrode exhibit good cycle stability. Density functional theory (DFT) indicates that the synergy effect between 1T-MoS 2 and V 2 CT x has significantly strengthened the potassium affinities and ion diffusion kinetics in the 1T-MoS 2 @V 2 CT x anode by reducing the ion diffusion energy barrier, thereby showing outstanding K + storage performance, especially in 1T-MoS 2 @V 2 CF 2 . As a result, the 1T-MoS 2 @V 2 CT x anode shows a high reversible capacity of 887.3 mA h g −1 at 0.1 A g −1 , eminent rate performance of the capacity maintaining 563.6 mA h g −1 at 2.0 A g −1 and remarkable cycle stability of 601.2/374.7 mA h g −1 with 69.4/56.5% capacity retention after 2000 cycles at 1.0/2.0 A g −1 . This work provides a new way for the exquisite design of 2D composite electrodes with excellent performance in PIBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL COMMUNICATIONS
·
2016
·Vol. 52
·期 75
·11274-11276
·
IF 6.567
Jin Han,Maowen Xu,Yubin Niu,Guan-Nan Li,Minqiang Wang,Yan Zhang,Min Jia,Chang ming Li
Novel K2Ti8O17 is successfully fabricated via a facile hydrothermal method combined with a subsequent annealing treatment and further evaluated as an anode material for potassium-ion batteries for the first time. This study may provide a broader vision into developing anode materials for potassium-ion batteries.
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
MOLECULES
·
2023
·Vol. 28
·期 13
·5212
·
IF 4.6
Cunliang Zhang,Zhengyuan Chen,Haojie Zhang,Yanmei Liu,Wei Wei,Yanli Zhou,Maotian Xu
Antimony (Sb) is a potential candidate anode for potassium-ion batteries (PIBs) owing to its high theoretical capacity. However; in the process of potassium alloying reaction; the huge volume expansion (about 407%) leads to pulverization of active substance as well as loss of electrical contact resulting in rapidly declining capacity. Herein; uniformly dispersed Sb-Nanodot in carbon frameworks (Sb-ND@C) were constructed by in situ confined polymerization of ionic liquids. Attributed to the uniformly dispersed Sb-ND and confinement effect of carbon frameworks; as anode for PIBs; Sb-ND@C delivered a superior rate capability (320.1 mA h g−1at 5 A g−1) and an outstanding cycling stability (486 mA h g−1after 1000 cycles; achieving 89.8% capacity retention). This work offers a facile route to prepare highly dispersed metal-Nanodot via the in situ polymerization of ionic liquid for high-performance metal-ion batteriesKeywords:Sb;ionic liquids;nanodot;anode;potassium-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
Journal of Energy Storage
·
2024
·
IF 8.9
Lupeng Zhang,Wen Liu,Chenxi Liang,Yiyang Liu,Haining Wang,Shanfu Lu,Yan Xiang
Potassium-ion batteries (PIBs) have garnered considerable interest for promising stationary energy storage devices. However, the current researches of carbon anode for PIBs still face the severe challenge of low areal capacity, unsatisfactory kinetics rate and low initial coulombic efficiency from the practical application perspective. To solve these issues, we design Fluorine-doped Typha orientalis fibre (FTOF) membrane by constructing integrated architecture and regulating electronic structure, and this FTOF membrane is used as freestanding carbon anode. This novel carbon anode not only retains integrated architecture with bamboo-like microfiber, but also presents abundant F-doped site and vacancy defects. As a result, the FTOF electrode delivers high areal capacity (1.12 mAh cm −2 ) with initial coulombic efficiency (62.5 %), stable cycling performance (0.41 mAh cm −2 after 500 cycles) and excellent rate performance (0.50 mAh cm −2 at 4 mA cm −2 ), overmatching most of the reported studies. Theoretical calculations on K adsorption affinities at various configurations illuminate the synergistic effects of F-doping and vacancy defects in improving K + adsorption kinetics. Moreover, full cells deliver superior cycling performance with high capacity retention of 90.2 % after 1000 cycles. This work provides a rational electrode design strategy and theoretical guidance to achieve ultra-high areal capacity carbon anode for PIBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 3
·729
·
IF 4.6
Heying Chu,Yong Li,Yuanjie Liu,Xueping Chai,Hongzhou Zhang,Jingchuan Zhang
Bismuth-based materials that adhere to the alloy/dealloy reaction mechanism are regarded as highly promising anode materials for potassium-ion batteries due to their high volume-specific capacity and moderate reaction potentials. However, their commercial viability has been limited by the effects of structural collapse due to volume distortion and impeded electron conduction, resulting in rapid capacity decline. In this work, a carbon-coated nanosized BiPO4rod (BiPO4@C) was designed and fabricated to overcome the aforementioned challenges through the architecture engineering and anionic-tuning strategy. In particular, the nanosized nanorods significantly reduce the volume expansion; the incorporation of the bulk and open-skeleton anion PO43−serves to mitigate the considerable volume distortion and generates the high ionic conductivity product (K3PO4) to ameliorate the poor ionic transport due to the structural deformation. The elaborated BiPO4rods exhibit high specific capacity (310.3 mAh g−1, at 500 mA g−1), excellent cycling stability (over 700 cycles at 500 mA g−1) and superior rate performance (137.8 mAh g−1, at 1000 mA g−1). Systematic ex-situ XRD and TEM, as well as kinetic tests, have revealed the “conversion-multistep alloying” reaction process and the “battery-capacitance dual-mode” potassium storage mechanism. Moreover, the thick electrodes showed excellent specific capacity and rate performance, demonstrating their significant application potential in the next generation of SIBs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Xian Lu,Wei-Lin Lin,Yue-E Huang,Jia-Xiang Zhang,Lun-Hui Guan,Xiao-Ying Huang,Ke-Zhao Du,Xiao-Hui Wu
A strategy is developed to fabricate NiO-reduced graphene oxide (rGO) layer-modified nickel foam (M-NF) as a current collector. Red phosphorous (RP) nanoparticles embedded in rGO nanosheets (P-rGO) are loaded on the M-NF (P-rGO@M-NF) as a superior anode for high-performance potassium-ion batteries. The binder-free P-rGO@M-NF anode exhibits a remarkable electrochemical performance with outstanding cycling stability and high rate capability, delivering a specific capacity of 361.2 mA h g–1 at a current density of 100 mA g–1 after 125 cycles. Theoretical calculations reveal that RP loaded on NiO can absorb K atoms easily and exhibit a semiconductor-to-metal transition after the incorporation of K atoms, exhibiting the significantly enhanced conductivity. In addition, a NiO layer can efficiently anchor RP nanoparticles by a strong Ni–O–P bond, which can endow P-rGO@M-NF a long-term lifespan. Thus, the excellent potassium storage performance of P-rGO@M-NF can be attributed to synergistic effects between modified nickel foam and P-rGO network. This present strategy to modify the current collector for anchoring alloy-type RP can be extended to other novel electrodes for high-performance energy-storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Yuqing Gao,Xiaobo Chen,Xing Zhao,Lin Lan,Jun Zhang,Yao Cheng,Qiang Ru
A facile fabricating tactic of high-energy ball milling coupled with cold quenching is adopted to design an amorphous Se4P4/graphene (Se4P4/G) hybrid anode for potassium ion batteries (PIBs). Benefiting from the promoted electron transfer and effective volume constraint caused by the graphene matrix, the novel Se4P4/G anode realized a prominent K-storage and long-time durability, such as a high initial capacity of 931.23/870.3 mAh g–1 at 50 mAh g–1, and sustainable capacity of 296.67/293.33 mAh g–1 at 1 A g–1 for 1800 cycles. DFT theoretical calculation revealed that the Se4P4/G interface could facilitate the electron transfer and reduce the band gap, which boosted the potassium storage. The Se4P4/G with high efficient storage and long-term durability would be one of the attractive anode materials for PIBs, and ongoing efforts are currently directed to commercialize scientific research, which provides a new idea to yield the high-power potassium phosphide for PIBs in the future.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Junming Zhang,Yefeng Feng,Junhao Peng,Kaidan Wu,Zuyong Feng,Miao He,Kunhua Wen,Deping Xiong
MXenes, with their metallic conductivity and complex surface chemistry, are emerging as promising newcomers in the field of energy storage materials. In this work, we present innovative iterations of MXene synthesised by phytic acid selective etching and self-assembly, denoted P-MXene, with phytic acid adhered tightly to the surface and increased the interlayer spacing of the MXene, which was beneficial to the embedment/desorption of K + , and etched more active sites. When used as an anode material for potassium ion batteries, P-MXene exhibits superior specific capacity of 135 mAh*g −1 , long-term cycling stability capacity of 128.8 mAh*g −1 and higher rate performance (the final capacity of 110.0 mAh*g −1 ). This transformative development not only establishes a new paradigm for MXene derivatives, but also paves the way for the exploration of high-performance MXene-based energy storage 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
ChemElectroChem
·
2019
·Vol. 6
·期 17
·4689-4695
·
IF 3.975
Yuqing Gao,Qiang Ru,Yang Liu,Shikun Cheng,Li Wei,Francis Chi-Chung Ling,Fuming Chen,Xianhua Hou
Graphical Seeing red : Benefitting from the controllable interplanar spacing of MoS 2 and the high theoretical capacity provided by red phosphorus (RP) particles, the mosaic RP/MoS 2 (2 : 1) hybrid synthesized by a simple ball-milling approach delivers impressive electrochemical performance for potassium-ion batteries (KIBs). This study provides a new insight into developing the rational design of novel anode alternatives for KIBs. Low-cost, non-toxic, and abundant red phosphorus (RP) with high gravimetric discharge/charge capacity has been recognized as a promising anode candidate for potassium-ion batteries (KIBs). However, the large volumetric change, severe agglomeration, and rapid capacity attenuation during discharge/charge cycles are major obstacles for practical applications in potassium-ion storage. In order to eliminate such intrinsic deficiencies, a mosaic RP/MoS 2 hybrid is designed and prepared by using a simple ball-milling method and subsequently used as an anode for KIBs. The hybrid with a certain ratio of 2 : 1 can achieve a sustainable K + storage capability (246.6/239.6 mAh g −1 for 100 cycles at 50 mA g −1 ), considerable long-cycle performance (120.5/118.0 mAh g −1 at 1000 mA g −1 after 500 cycles), and good rate capability. The cycling performance is attributed to a pseudocapacitive effect, controllable interlayer spacing of MoS 2 , and enhanced conductivity. In view of the scalable synthesis process and considerable cycling durability, the RP/MoS 2 hybrid may shed light on the rational design of novel anode alternatives for KIBs.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2017
·
IF 4.396
Cailing Liu,Shaohua Luo,Hongbo Huang,Zhiyuan Wang,Aimin Hao,Yuchun Zhai,Zhaowen Wang
A novel layered ternary material K 0.67 Ni 0.17 Co 0.17 Mn 0.66 O 2 has been fabricated via a co-precipitation assisted solid-phase method and further evaluated as a cathode for potassium-ion batteries for the first time. Highly reversible K + intercalation/deintercalation is demonstrated in this material. It delivers a reversible capacity of 76.5 mAh/g with average voltage of 3.1 V and shows good cycling performance with capacity retention of 87% after 100 cycles at 20 mA/g. This work may give a new insight into developing cathode materials for potassium-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
CHEMICAL COMMUNICATIONS
·
2016
·Vol. 52
·期 78
·11661-11664
·
IF 6.567
Jin Han,Yubin Niu,Shu-juan Bao,Ya-Nan Yu,Shi-Yu Lu,Maowen Xu
Novel nanocubic KTi2(PO4)3 was successfully fabricated via a facile hydrothermal method combined with a subsequent annealing treatment and further evaluated as an electrode material for potassium-ion batteries for the first time. For comparison, carbon-coated KTi2(PO4)3 obtained by a normal cane sugar-assisted method reveals improved electrochemical performances in potassium-ion batteries. This work may give a new insight into developing electrode materials for potassium-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
危险品化学品经营许可证（带存储）