Applications of Metal-organic Frameworks (MOFs) Materials in Lithium-ion Battery/Lithium-metal Battery Electrolytes

Chang, Zhi; Qiao, Yu; Yang, Huijun; Deng, Han; Zhu, Xingyu; He, Ping; Zhou, Huiqun

doi:10.6023/a20090442

“…为推动能源低碳化和绿色发展, 我国提出了"碳达峰、碳中和"的战略目标, 在这场新的能源革命中, 电化学储能技术迎来了大有可为的战略机遇. 锂离子电池和超级电容器是目前应用最为广泛的电化学储能器件 [1][2][3][4] . 但由于它们二者只能满足高能量或者高功率单一方面的需求, 在某些领域中的应用依然受到一定限制.…”

Section: 引言unclassified

Research on the Preparation and Potassium Storage Performance of F, N Co-doped Porous Carbon Nanosheets

Jiang¹,

Zheng²,

Meng³

et al. 2023

Acta Chimica Sinica

0

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Potassium-ion capacitor (PIC) is a new type of electrochemical energy storage device, and carbon-based materials are considered as one of the most promising candidate anode materials for K + storage. However, the migration rate of K + is slow and the material structure is easy to be damaged during the intercalation and de-intercalation processes because the K + has a larger radius, resulting in a significant decline in performance. Therefore, the development of low-cost carbon materials to meet the thermodynamic and kinetic requirements of K + diffusion has become the bottleneck of current development. In this work, the F and N co-doped porous carbon nanosheets (FNCPC) were prepared by direct high-temperature carbonization, in which the low-cost coal pitch as the carbon source, polytetrafluoroethylene as the fluorine source and sodium chloride as the template agent. The structure design of the nanosheet effectively shortens the transport path of ions, and the co-doping of F and N widens the layer spacing of carbon, alleviates the volume expansion problem, and also forms more surface defects, which provides more reactive sites for K + storage. In addition, electrochemical kinetic analysis and density functional theory (DFT) show that the FNCPC has remarkable pseudocapacitance characteristics and strong K adsorption energy. Benefiting from the synergistic optimization of structure and chemical properties, the FNCPC anode exhibits excellent potassium storage capacity (a high specific capacity of 212.8 mAh•g -1 at 2 A•g -1 ) and good cyclic stability. Furthermore, the PIC (AC//FNCPC) was constructed by using commercial activated carbon (AC) as cathode electrode and FNCPC as anode electrode, which

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Sustainable Lithium‐Metal Battery Achieved by a Safe Electrolyte Based on Recyclable and Low‐Cost Molecular Sieve

Chang

¹

,

Qiao

²

,

Yang

³

et al. 2021

Angewandte Chemie

2

0

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As one typical clean-energy technologies,l ithiummetal batteries,e specially high-energy-density batteries which use concentrated electrolytes hold promising prospect for the development of as ustainable world. However,c oncentrated electrolytes with aggregative configurations were achieved at the expense of using extra dose of costly and environmentalunfriendly salts/additives,w hich casts as hadowo ver the development of as ustainable world. Herein, without using any expensive salts/additives,w ee mployed commerciallyavailable low-cost and environmental-friendly molecular sieves (zeolite) to sieve the solvation sheath of lithium ions of classic commercialized electrolyte (LiPF 6 -EC/DMC), and resulting in aunique zeolite sieved electrolyte which was more aggregative than conventional concentrated electrolytes.I nspiringly,t he new-designed electrolyte exhibited largely enhanced anti-oxidation stability under high-voltage (4.6 volts) and elevated temperature (55 8 8C). NCM-811//Li cells assembled with this electrolyte delivered ultra-stable rechargeabilities (over 1000 cycles for half-cell;300 cycles for pouch-cell). More importantly,s ustainable NCM-811//Li pouch-cell with negligible capacity decayc an also be obtained through using recyclable zeolite sieved electrolyte.T his conceptually-new way in preparing safe and highly-efficient electrolyte by using low-price molecular sieve would accelerate the development of high-energy-density lithium-ion/lithium-metal batteries.

show abstract

Sustainable Lithium‐Metal Battery Achieved by a Safe Electrolyte Based on Recyclable and Low‐Cost Molecular Sieve

Chang

¹

,

Qiao

²

,

Yang

³

et al. 2021

View full text Add to dashboard Cite

As one typical clean-energy technologies,l ithiummetal batteries,e specially high-energy-density batteries which use concentrated electrolytes hold promising prospect for the development of as ustainable world. However,c oncentrated electrolytes with aggregative configurations were achieved at the expense of using extra dose of costly and environmentalunfriendly salts/additives,w hich casts as hadowo ver the development of as ustainable world. Herein, without using any expensive salts/additives,w ee mployed commerciallyavailable low-cost and environmental-friendly molecular sieves (zeolite) to sieve the solvation sheath of lithium ions of classic commercialized electrolyte (LiPF 6 -EC/DMC), and resulting in aunique zeolite sieved electrolyte which was more aggregative than conventional concentrated electrolytes.I nspiringly,t he new-designed electrolyte exhibited largely enhanced anti-oxidation stability under high-voltage (4.6 volts) and elevated temperature (55 8 8C). NCM-811//Li cells assembled with this electrolyte delivered ultra-stable rechargeabilities (over 1000 cycles for half-cell;300 cycles for pouch-cell). More importantly,s ustainable NCM-811//Li pouch-cell with negligible capacity decayc an also be obtained through using recyclable zeolite sieved electrolyte.T his conceptually-new way in preparing safe and highly-efficient electrolyte by using low-price molecular sieve would accelerate the development of high-energy-density lithium-ion/lithium-metal batteries.

show abstract

Applications of Metal-organic Frameworks (MOFs) Materials in Lithium-ion Battery/Lithium-metal Battery Electrolytes

Cited by 10 publications

References 24 publications

Research on the Preparation and Potassium Storage Performance of F, N Co-doped Porous Carbon Nanosheets

Research on the Preparation and Potassium Storage Performance of F, N Co-doped Porous Carbon Nanosheets

Sustainable Lithium‐Metal Battery Achieved by a Safe Electrolyte Based on Recyclable and Low‐Cost Molecular Sieve

Sustainable Lithium‐Metal Battery Achieved by a Safe Electrolyte Based on Recyclable and Low‐Cost Molecular Sieve

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