A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

Zhu, Jiaojiao; Li, Yali; Yang, Bingjun; Liu, Lingyang; Li, Junshuai; Yan, Xingbin; He, Deyan

doi:10.1002/smll.201801836

Cited by 125 publications

(77 citation statements)

References 41 publications

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“…In recent years, dual ion batteries (DIBs) with the unique anion insertion mechanism have attracted increasing attention. [ 6–11 ] Different from storing and releasing energy through metal ions shuttling between the positive and negative electrodes in the charging and discharging processes of the traditional metal ion batteries, DIBs store and release energy through the insertion/extraction of anions and cations in the electrolyte into/from the cathode and anode. [ 12–15 ] Therefore, DIBs have the higher working voltage.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Aqueous/Nonaqueous Water‐in‐Bisalt Electrolyte Enables Safe Dual Ion Batteries

Zhu

et al. 2020

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.201905838. Recently, a new class of aqueous electrolytes named "waterin-salt (WiS)" formulated with superconcentrated lithium salts Dual ion batteries (DIBs) have recently attracted ever-increasing attention owing to the potential advantages of low material cost and good environmental friendliness. However, the potential safety hazards, cost, and environmental concerns mainly resulted from the commonly used nonaqueous organic solvents severely hinder the practical application of DIBs. Herein, a hybrid aqueous/nonaqueous water-in-bisalt electrolyte with both broad electrochemical stability window and excellent safety performance is developed. The lithium-based DIB assembled using KS6 graphite and niobium pentoxide as the active materials in the cathode and anode exhibits good comprehensive performance including capacity, cycling stability, rate performance, and medium discharge voltage. Initial capacities of ≈47.6 and 29.6 mAh g −1 retention after 300 cycles can be delivered with a medium discharge voltage of around 2.2 V in the voltage window of 0-3.2 V at the current density of 200 mA g −1 . Good rate performance for the battery can be indicated by 29.7 mAh g −1 discharge capacity retention at 400 mA g −1 . It is noteworthy that the coulombic efficiency of the battery can reach as high as 93.9%, which is comparable to that of the corresponding DIBs using nonaqueous organic electrolytes.www.advancedsciencenews.com

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Section: Introductionmentioning

confidence: 99%

Hybrid Aqueous/Nonaqueous Water‐in‐Bisalt Electrolyte Enables Safe Dual Ion Batteries

Zhu

et al. 2020

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“…A reversible capacity of ≈54.6 mAh g −1 with 92.5% cycling stability over 400 cycles was reported for a potential range of 2.4–5.4 V at 100 mA g −1 . This KDIB could also demonstrate a promising energy density of 158.3 Wh kg −1 . Kovalenko's group investigated a high‐energy‐density DIB for grid scale application using 5 m KFSI in alkylcarbonates electrolyte.…”

Section: Dual‐ion Batteriesmentioning

confidence: 99%

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Rajagopalan

Tang

et al. 2020

Adv Funct Materials

669

401

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Demand for energy in day to day life is increasing exponentially. However, existing energy storage technologies like lithium ion batteries cannot stand alone to fulfill future needs. In this regard, potassium ion batteries (KIBs) that utilize K ions in their charge storage mechanism have attracted considerable attention due to their unique properties and are therefore established as one of the future battery systems of interest among the scientific community. Nevertheless, the development and identification of appropriate electrode materials is very essential for practical applications. This review features the current development in KIBs electrode and electrolyte materials, the present challenges facing this technology (in the commercial aspect), and future aspects to develop fully functional KIBs. The potassium storage mechanisms, evolution of the KIBs, and the advantages and disadvantages of each category of materials are included. Additionally, various approaches to enhance the electrochemical performances of KIBs are also discussed. This review is not only an amalgamation of different viewpoints in literature, but also contains concise perspectives and strategies. Moreover, the potential emergence of a novel class of K‐based dual ion batteries is also analyzed for the first time.

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“…The most common electrolytes for DCBs are organic carbonates and ionic liquid (IL) solvents paired with various inorganic/organic salts such as LiPF 6 , NaPF 6 , and n‐butyl pyridinium [PF 6 ] . Their concentration is usually set to be between 0.5 and 2 mol L −1 to ensure high ionic conductivity and low viscosity.…”

Section: Conventional Liquid Electrolytesmentioning

confidence: 99%

“…The most common electrolytes for DCBs are organic carbonates and ionic liquid (IL) solvents paired with various inorganic/ organic salts such as LiPF 6 , NaPF 6 , and n-butyl pyridinium [PF 6 ]. [26][27][28][29][30][31][32][33][34][35][36][37][38] Their concentration is usually set to be between 0.5 and 2 mol L À 1 to ensure high ionic conductivity and low viscosity. These electrolytes, however, suffer from severe decomposition on carbonaceous cathodes and/or anodes because of the superior catalytic activity of the defects in carbonaceous materials, [39][40][41] causing unsatisfactory Coulombic efficiency (CE) and inferior cycling performance of DCBs.…”

Section: Conventional Liquid Electrolytesmentioning

confidence: 99%

Electrolytes for Dual‐Carbon Batteries

Jiang

Luo

Zhong³

et al. 2019

ChemElectroChem

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Dual‐carbon batteries (DCBs) are a promising candidate for smart grid applications, owing to their low cost, high power capability, and environmentally friendly benefits. As an essential component of DCBs, electrolytes not only act as a medium for ion migration during the running of the battery, but also provide active ions to be intercalated into carbon electrodes, exerting significant impacts on the electrochemical performance and safety of the DCB. In this Review, we discuss recent progress in electrolyte research for DCBs, including conventional liquid electrolytes, highly concentrated electrolytes, and gel polymer electrolytes, with a focus on their stability and compatibility with carbon electrodes. Finally, we present perspectives on the current limitations and future research directions of electrolytes for DCBs. Some recommendations for battery evaluation are also offered.

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A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

Cited by 125 publications

References 41 publications

Hybrid Aqueous/Nonaqueous Water‐in‐Bisalt Electrolyte Enables Safe Dual Ion Batteries

Hybrid Aqueous/Nonaqueous Water‐in‐Bisalt Electrolyte Enables Safe Dual Ion Batteries

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Electrolytes for Dual‐Carbon Batteries

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