Building aqueous K-ion batteries for energy storage

Jiang, Liwei; Lu, Yaxiang; Zhao, Chenglong; Liu, Lilu; Zhang, Jie-Nan; Zhang, Qiangqiang; Shen, Xing; Zhao, Junmei; Yu, Xiqian; Li, Hong; Huang, Xuejie; Chen, Liquan; Hu, Yong‐Sheng

doi:10.1038/s41560-019-0388-0

Cited by 761 publications

(612 citation statements)

References 50 publications

Supporting

Mentioning

593

Contrasting

Unclassified

Order By: Relevance

“…[11] One of the main reasons for this reality is the lack of suitable high-performance PIB anode. [12] Despite the success achieved in potassium metal anode, [13][14][15] the longterm cycling of potassium metal anode is still a challenge. On the other hand, various alloying and intercalating anodes have attracted widespread attention.…”

Section: Introductionmentioning

confidence: 99%

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

et al. 2020

View full text Add to dashboard Cite

The limited potassium‐ion intercalation capacity of graphite hampers development of potassium‐ion batteries (PIB). Edge‐nitrogen doping is an effective approach to enhance K‐ion storage in carbonaceous materials. One shortcoming is the lack of precise control over producing the edge‐nitrogen configuration. Here, a molecular‐scale copolymer pyrolysis strategy is used to precisely control edge‐nitrogen doping in carbonaceous materials. This process results in defect‐rich, edge‐nitrogen doped carbons (ENDC) with a high nitrogen‐doping level (up to 10.5 at %) and a high edge‐nitrogen ratio (87.6 %). The optimized ENDC exhibits a high reversible capacity of 423 mAh g−1, a high initial Coulombic efficiency of 65 %, superior rate capability, and long cycle life (93.8 % retention after three months). This strategy can be extended to design other edge‐heteroatom‐rich carbons through pyrolysis of copolymers for efficient storage of various mobile ions.

show abstract

Section: Introductionmentioning

confidence: 99%

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Rechargeable aqueous Zn‐based batteries are attractive for large‐scale energy storage (LSES), due to their low cost, high safety, and eco‐friendliness, as well as high ionic conductivity of the aqueous electrolyte . Among the most studied cathode materials, such as Prussian blue analogues and vanadium‐based oxides, manganese oxides are more promising for practical use of aqueous Zn ion batteries, attributing to both the high operating cell voltage and considerable capacity delivery . However, the structure collapse of MnO 2 (α‐, β‐, γ‐, etc.)…”

mentioning

confidence: 99%

Unravelling H⁺/Zn²⁺ Synergistic Intercalation in a Novel Phase of Manganese Oxide for High‐Performance Aqueous Rechargeable Battery

Zhao

Chen

Wang

et al. 2019

Small

154

126

View full text Add to dashboard Cite

Aqueous Zn‐MnO2 batteries using mild electrolyte show great potential in large‐scale energy storage (LSES) application, due to high safety and low cost. However, structure collapse of manganese oxides upon cycling caused by the conversion mechanism (e.g., from tunnel to layer structures for α‐, β‐, and γ‐phases) is one of the most urgent issues plaguing its practical applications. Herein, to avoid the phase conversion issue and enhance battery performance, a structurally robust novel phase of manganese oxide MnO2H0.16(H2O)0.27 (MON) nanosheet with thickness of ≈2.5 nm is designed and synthesized as a promising cathode material, in which a nanosheet structure combined with a novel H+/Zn2+ synergistic intercalation mechanism is demonstrated and evidenced. Accordingly, a high‐performance Zn/MON cell is achieved, showing a high energy density of ≈228.5 Wh kg−1, impressive cyclability with capacity retention of 96% at 0.5 C after 300 cycles, as well as exhibiting rate performance of 115.1 mAh g−1 at current rate of 10 C. To the best current knowledge, this H+/Zn2+ synergistic intercalation mechanism is first reported in an aqueous battery system, which opens a new opportunity for development of high‐performance aqueous Zn ion batteries for LSES.

show abstract

“…The limited cycling life because of the degradation of electrode due to the constant movement of K + during charging/discharging processes is also restricting its further growth for practical applications. To mitigate these issues, Hu et al proposed a KIB full cell by taking perylene diimide as anode, Fe‐substituted Mn‐rich K x Fe y Mn 1 − y [Fe(CN) 6 ] w ·zH 2 O as cathode, and 22 m KCF 3 SO 3 water‐in‐salt as electrolyte . In this study, it was revealed that this aqueous electrolyte could effectively reduce the dissolution of the electrode materials due to the lack of free water.…”

Section: Different Electrolytesmentioning

confidence: 93%

“…The aqueous electrolyte‐based KIBs are considered to be a potential candidate for the grid‐scale applications mainly due to its non‐flammable nature . Other advantages of using aqueous batteries are its low cost, sustainability, environmental friendly nature, stability in air, ability to withstand overcharge due to the oxygen cycle, high electrolyte conductivity, etc.…”

Section: Different Electrolytesmentioning

confidence: 99%

“…In this study, it was revealed that this aqueous electrolyte could effectively reduce the dissolution of the electrode materials due to the lack of free water. Further, this combination of aqueous KIB could achieve an energy density of 80 Wh kg −1 with a good rate capability (20C) and wide temperature range of −20 to 60 °C . A study conducted by Ji et al, utilized KTi 2 (PO 4 ) 3 as anode and potassium‐acetate‐based aqueous solution as electrolytes .…”

Section: Different Electrolytesmentioning

confidence: 99%

See 1 more Smart Citation

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Rajagopalan

Tang

et al. 2020

Adv Funct Materials

702

401

View full text Add to dashboard Cite

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.

show abstract

Building aqueous K-ion batteries for energy storage

Cited by 761 publications

References 50 publications

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

Unravelling H⁺/Zn²⁺ Synergistic Intercalation in a Novel Phase of Manganese Oxide for High‐Performance Aqueous Rechargeable Battery

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Contact Info

Product

Resources

About

Building aqueous K-ion batteries for energy storage

Cited by 761 publications

References 50 publications

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

A Site‐Selective Doping Strategy of Carbon Anodes with Remarkable K‐Ion Storage Capacity

Unravelling H+/Zn2+ Synergistic Intercalation in a Novel Phase of Manganese Oxide for High‐Performance Aqueous Rechargeable Battery

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Contact Info

Product

Resources

About

Unravelling H⁺/Zn²⁺ Synergistic Intercalation in a Novel Phase of Manganese Oxide for High‐Performance Aqueous Rechargeable Battery