scholarly journals Blowing Iron Chalcogenides into Two-Dimensional Flaky Hybrids with Superior Cyclability and Rate Capability for Potassium-Ion Batteries

ACS Nano ◽  
2021 ◽  
Vol 15 (2) ◽  
pp. 2506-2519
Author(s):  
Hu Wu ◽  
Shiyao Lu ◽  
Siyuan Xu ◽  
Jing Zhao ◽  
Yuankun Wang ◽  
...  
Keyword(s):  
Rate Capability ◽  
Potassium Ion ◽  
Two Dimensional ◽  
Iron Chalcogenides

Bi-continuous ion/electron transfer avenues enhancing the rate capability of SnS2 anode for potassium-ion batteries

2021 ◽  
Vol 506 ◽  
pp. 230160
Author(s):  
Huiqiao Liu ◽  
Yanan He ◽  
Hang Zhang ◽  
Kangzhe Cao ◽  
Shaodan Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Rate Capability ◽  
Potassium Ion

Two-dimensional C3N/blue phosphorene vdW heterostructure for Li, Na and K-ion batteries

2021 ◽  
Author(s):  
Mohammad Ubaid ◽  
Anver Aziz ◽  
Bhalchandra S. Pujari
Keyword(s):  
Van Der Waals ◽  
Potassium Ion ◽  
Two Dimensional ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure ◽  
Sodium And Potassium ◽  
Blue Phosphorene

We investigate a van der Waals heterostructure constructed using BP and C3N and investigate its use as an anode for lithium-, sodium- and potassium-ion batteries.

Porous CoC2O4/Graphene Oxide Nanocomposite for Advanced Potassium-Ion Storage

2019 ◽  
Vol 19 (6) ◽  
pp. 3610-3615 ◽  
Author(s):  
Lifeng Wang ◽  
Kaiyuan Wei ◽  
Pengjun Zhang ◽  
Hong Wang ◽  
Xiujun Qi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Rate Capability ◽  
Lithium Ion ◽  
Potassium Ion ◽  
Practical Applications ◽  
Ion Storage ◽  
Cheap Method ◽  
Excellent Cycling Stability

Potassium-ion batteries (PIBs), as one of the alternatives to lithium-ion batteries (LIBs), have attracted considerable attention on account of the affluence and low-cost of potassium. Moreover, CoC2O4 and graphene oxide (GO) have been used very well in lithium-ion batteries. Hence, the hybrid CoC2O4/GO was investigated as a new anode material for PIBs. The hybrid CoC2O4/GO was synthesized by a facile and cheap method combined with supersonic dispersion. Electrochemical measurements reveal that the hybrid CoC2O4/GO delivered an excellent cycling stability of 166 mAh g−1 at 50 mA g−1 and a superior rate capability even at 1 A g−1. These results demonstrate although the cycle ability was insufficient for practical applications, transition-metal oxalates composites can still bring new hope to the development of PIBs.

scholarly journals Hollow N-doped carbon nanofibers provide superior potassium-storage performance

2020 ◽  
Vol 2 (9) ◽  
pp. 4187-4198
Author(s):  
Ya Ru Pei ◽  
Ming Zhao ◽  
Hong Yu Zhou ◽  
Chun Cheng Yang ◽  
Qing Jiang
Keyword(s):  
Carbon Nanofibers ◽  
Rate Capability ◽  
Potassium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Storage Performance ◽  
Cycling Life

As an anode in potassium-ion batteries, the hollow N-doped carbon nanofibers fabricated from polyaniline exhibit ultra-high rate capability and ultra-long cycling life.

Boosting the potassium-ion storage performance of a carbon anode by chemically regulating oxygen-containing species

2019 ◽  
Vol 55 (94) ◽  
pp. 14147-14150 ◽  
Author(s):  
Rui Zhang ◽  
Haibo Li ◽  
Rui Li ◽  
Denghu Wei ◽  
Wenjun Kang ◽  
...  
Keyword(s):  
Rate Capability ◽  
Reversible Capacity ◽  
Potassium Ion ◽  
Cycling Stability ◽  
Carbon Anode ◽  
Storage Performance ◽  
Ion Storage ◽  
Melamine Foam

The oxygen-containing species in melamine foam carbons are chemically regulated. The optimized carbon anode shows an enhanced potassium-ion storage performance in terms of reversible capacity, rate capability, and long-term cycling stability.

Zero-strain K0.6Mn1F2.7 hollow nanocubes for ultrastable potassium ion storage

2018 ◽  
Vol 11 (10) ◽  
pp. 3033-3042 ◽  
Author(s):  
Zhiwei Liu ◽  
Ping Li ◽  
Guoquan Suo ◽  
Sheng Gong ◽  
Wei (Alex) Wang ◽  
...  
Keyword(s):  
Rate Capability ◽  
Potassium Ion ◽  
Cycling Stability ◽  
New Class ◽  
Ion Storage

In this report, we develop a new etching route to fabricate a new class of zero-strain potassium fluoromanganate hollow nanocubes (KMnF-NCs) for boosting the performance of KIBs in terms of capacity, rate capability and cycling stability.

Two-dimensional transition metal dichalcogenides as promising anodes for potassium ion batteries from first-principles prediction

2019 ◽  
Vol 21 (42) ◽  
pp. 23441-23446 ◽  
Author(s):  
Zixiang Zhang ◽  
Mingye Yang ◽  
Ni Zhao ◽  
Lu Wang ◽  
Youyong Li
Keyword(s):  
Transition Metal ◽  
First Principles ◽  
Transition Metal Dichalcogenides ◽  
Atomic Radius ◽  
Potassium Ion ◽  
Two Dimensional ◽  
Migration Barriers ◽  
Metal Dichalcogenides ◽  
Na Ions

Although K possesses a larger atomic radius, its migration barriers on TMD monolayers are much smaller than those of Li and Na ions. Among them, both VS2 and TiS2 are suggested to be the best electrode for KIBs.

Highly Conductive Two-Dimensional Metal–Organic Frameworks for Resilient Lithium Storage with Superb Rate Capability

ACS Nano ◽  
2020 ◽  
Vol 14 (9) ◽  
pp. 12016-12026 ◽  
Author(s):  
Zhenzhen Wu ◽  
David Adekoya ◽  
Xing Huang ◽  
Milton J. Kiefel ◽  
Jian Xie ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Rate Capability ◽  
Two Dimensional ◽  
Lithium Storage ◽  
Metal Organic

scholarly journals Dual-phase nanostructuring of layered metal oxides for high-performance aqueous rechargeable potassium ion microbatteries

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ying-Qi Li ◽  
Hang Shi ◽  
Sheng-Bo Wang ◽  
Yi-Tong Zhou ◽  
Zi Wen ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Electrical Power ◽  
Rate Capability ◽  
Interlayer Spacing ◽  
Potassium Ion ◽  
Dual Phase ◽  
Ultrahigh Energy ◽  
Practical Capacity ◽  
On Chip

Abstract Aqueous rechargeable microbatteries are promising on-chip micropower sources for a wide variety of miniaturized electronics. However, their development is plagued by state-of-the-art electrode materials due to low capacity and poor rate capability. Here we show that layered potassium vanadium oxides, KxV2O5·nH2O, have an amorphous/crystalline dual-phase nanostructure to show genuine potential as high-performance anode materials of aqueous rechargeable potassium-ion microbatteries. The dual-phase nanostructured KxV2O5·nH2O keeps large interlayer spacing while removing secondary-bound interlayer water to create sufficient channels and accommodation sites for hydrated potassium cations. This unique nanostructure facilitates accessibility/transport of guest hydrated potassium cations to significantly improve practical capacity and rate performance of the constituent KxV2O5·nH2O. The potassium-ion microbatteries with KxV2O5·nH2O anode and KxMnO2·nH2O cathode constructed on interdigital-patterned nanoporous metal current microcollectors exhibit ultrahigh energy density of 103 mWh cm−3 at electrical power comparable to carbon-based microsupercapacitors.

scholarly journals A Mn3O4 nanospheres@rGO architecture with capacitive effects on high potassium storage capability

2019 ◽  
Vol 1 (11) ◽  
pp. 4347-4358
Author(s):  
Chandrasekaran Nithya ◽  
Palanivelu Vishnuprakash ◽  
Sukumaran Gopukumar
Keyword(s):  
Anode Material ◽  
Potassium Ion ◽  
Two Dimensional ◽  
High Potassium

A two dimensional (2D) Mn3O4@rGO architecture has been investigated as an anode material for potassium-ion secondary batteries.

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