Green energy storage chemistries based on neutral aqueous electrolytes

Chang, Zheng; Yang, Yanming; Li, Minxia; Wang, Xiaowei; Wu, Yuping

doi:10.1039/c4ta00565a

Cited by 121 publications

(81 citation statements)

References 162 publications

(186 reference statements)

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“…[28,29] More importantly,a queous electrolytes are environmentally friendly and nonexplosive, which is practically very important. Electrochemical cells containing aqueous electrolytes usually do not require the strict assembly conditions that are needed for cells containing non-aqueous electrolytes, as it is not necessary to prevent the invasion of water vapor;t his reduces costs and makes electrochemicalc ells containing aqueous electrolytes adaptable for many practical applications.…”

Section: Aqueouse Lectrolytesmentioning

confidence: 99%

Carbon‐Based Materials for Lithium‐Ion Batteries, Electrochemical Capacitors, and Their Hybrid Devices

2015

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A rapidly developing market for portable electronic devices and hybrid electrical vehicles requires an urgent supply of mature energy-storage systems. As a result, lithium-ion batteries and electrochemical capacitors have lately attracted broad attention. Nevertheless, it is well known that both devices have their own drawbacks. With the fast development of nanoscience and nanotechnology, various structures and materials have been proposed to overcome the deficiencies of both devices to improve their electrochemical performance further. In this Review, electrochemical storage mechanisms based on carbon materials for both lithium-ion batteries and electrochemical capacitors are introduced. Non-faradic processes (electric double-layer capacitance) and faradic reactions (pseudocapacitance and intercalation) are generally explained. Electrochemical performance based on different types of electrolytes is briefly reviewed. Furthermore, impedance behavior based on Nyquist plots is discussed. We demonstrate the influence of cell conductivity, electrode/electrolyte interface, and ion diffusion on impedance performance. We illustrate that relaxation time, which is closely related to ion diffusion, can be extracted from Nyquist plots and compared between lithium-ion batteries and electrochemical capacitors. Finally, recent progress in the design of anodes for lithium-ion batteries, electrochemical capacitors, and their hybrid devices based on carbonaceous materials are reviewed. Challenges and future perspectives are further discussed.

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Section: Aqueouse Lectrolytesmentioning

confidence: 99%

Carbon‐Based Materials for Lithium‐Ion Batteries, Electrochemical Capacitors, and Their Hybrid Devices

2015

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“…The instability of perovskite-and NASICON-type solid electrolytes against metallic Li and the solid/liquid interface need to be improved as well. [257][258][259] It's reported that using polymeric solid electrolyte as a buffer layer could alleviate the instability of NASICON-type solid electrolytes, 64,243,[260][261][262] the long-term stability, however, needs further confirmation. 58 The development of solid electrolytes with superior conductivity and electrochemical stability will undoubtedly stimulate the development of Li-redox flow batteries together with a deep understanding of the fundamentals on ionic mobility in the bulk material.…”

Section: Polymeric Electrolytesmentioning

confidence: 99%

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

et al. 2015

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Electrical energy storage system such as secondary batteries is the principle power source for portable electronics, electric vehicles and stationary energy storage. As an emerging battery technology, Li-redox flow batteries inherit the advantageous features of modular design of conventional redox flow batteries and high voltage and energy efficiency of Li-ion batteries, showing great promise as efficient electrical energy storage system in transportation, commercial, and residential applications. The chemistry of lithium redox flow batteries with aqueous or non-aqueous electrolyte enables widened electrochemical potential window thus may provide much greater energy density and efficiency than conventional redox flow batteries based on proton chemistry. This Review summarizes the design rationale, fundamentals and characterization of Li-redox flow batteries from a chemistry and material perspective, with particular emphasis on the new chemistries and materials. The latest advances and associated challenges/ opportunities are comprehensively discussed.

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“…[5][6][7] Investigation into less explored or unexplored renewable sources can help to diversify the world energy matrix in the mid-and in the long-term. 8 Salinity gradient energy (SGE) or blue energy is among unexplored clean and renewable energy sources with great potential for energy storage. This technology only depends on the difference between the salinity of two water reservoirs such as seawater and river water.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Systems for Renewable Energy Conversion from Salinity and Proton Gradients

Morais¹,

Lima²,

Gomes³

et al. 2018

J. Braz. Chem. Soc.

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Ever-rising energy demand, fossil fuel dependence, and climate issues have harmful consequences to the society. Exploring clean and renewable energy to diversify the world energy matrix has become an urgent matter. Less explored or unexplored renewable energy sources like the salinity and proton gradient energy are an attractive alternative with great energy potential. This paper discusses important electrochemical systems for energy conversion from natural and artificial concentration gradients, namely capacitive mixing (CapMix), mixing entropy batteries (MEB), and neutralization batteries (NB); the working principle and thermodynamic formalism of these systems; and the materials employed in the assembly of these systems.

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Green energy storage chemistries based on neutral aqueous electrolytes

Cited by 121 publications

References 162 publications

Carbon‐Based Materials for Lithium‐Ion Batteries, Electrochemical Capacitors, and Their Hybrid Devices

Carbon‐Based Materials for Lithium‐Ion Batteries, Electrochemical Capacitors, and Their Hybrid Devices

A chemistry and material perspective on lithium redox flow batteries towards high-density electrical energy storage

Electrochemical Systems for Renewable Energy Conversion from Salinity and Proton Gradients

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