Potassium‐Ion Batteries: Red Phosphorus Potassium‐Ion Battery Anodes (Adv. Sci. 9/2019)

Chang, Wei-Yi; Wu, Jen‐Hsuan; Chen, Kuan‐Ting

doi:10.1002/advs.201970052

Cited by 3 publications

(5 citation statements)

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“…Ragone plot showed the maximal energy and power densities of ≈250 Wh kg −1 and ≈1400 W kg −1 , respectively, which were highly competitive compared with state-of-the-art K-ion full cells using elemental P anodes (Figure 5d). [24,37] In addition, it could retain 63% of the initial capacity after 100 cycles at 300 mA g −1 (Figure 5e), suggesting the high electrochemical reversibility of both electrodes. As a comparison, we conducted a RP@MWCNT/Prussian blue full cell and observed a sharp capacity decrease during the initial 40 cycles with an optimized N/P ratio of 1.3 (Figure S22, Supporting Information).…”

Section: Resultsmentioning

confidence: 94%

“…In stark contrast, a rapid capacity decay was demonstrated for RP@MWCNT, which only retained 19.6% of the original capacity after 100 cycles. At a higher current density of 0.8 A g −1 , the BRPH@ MWCNT showed a capacity increase at first, originated from the continuous activation of the inner active species in BRPH@ MWCNT, [36,37] and could retain 83.3% of the original capacity after 300 cycles (Figure S9, Supporting Information). This suggests that the BP/RP heterostructure significantly improves the reversibility of the K-P alloying/dealloying process.…”

Section: Resultsmentioning

confidence: 99%

“…c) Rate performance of the BRPH@MWCNT/Prussian blue full cell with an N/P ratio of 1.4. d) Ragone plot of our BRPH@MWCNT/Prussian blue full cell compared with other PIBs using phosphorus anodes. [24,37] The specific capacity, energy, and power densities were all calculated based on the total mass of active materials on both electrodes. e) Cycling performance of a BRPH@MWCNT/Prussian blue full cell at the current density of 300 mA g −1 .…”

Section: Discussionmentioning

confidence: 99%

“…a) Schematic illustration of the BRPH@MWCNT/Prussian blue full cell.b) Charge/discharge profiles of the K metal/BRPH@MWCNT half cell (red curve), K metal/Prussian blue half cell (blue curve) and BRPH@MWCNT/ Prussian blue full cell (yellow curve) at the current density of 100 mA g −1 . c) Rate performance of the BRPH@MWCNT/Prussian blue full cell with an N/P ratio of 1.4. d) Ragone plot of our BRPH@MWCNT/Prussian blue full cell compared with other PIBs using phosphorus anodes [24,37]. The specific capacity, energy, and power densities were all calculated based on the total mass of active materials on both electrodes.…”

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confidence: 99%

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Unlocking Deep and Fast Potassium‐Ion Storage through Phosphorus Heterostructure

Zhao

Geng

Zhou

et al. 2023

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Potassium‐ion battery represents a promising alternative of conventional lithium‐ion batteries in sustainable and grid‐scale energy storage. Among various anode materials, elemental phosphorus (P) has been actively pursued owing to the ideal natural abundance, theoretical capacity, and electrode potential. However, the sluggish redox kinetics of elemental P has hindered fast and deep potassiation process toward the formation of final potassiation product (K3P), which leads to inferior reversible capacity and rate performance. Here, it is shown that rational design on black/red P heterostructure can significantly improve K‐ion adsorption, injection and immigration, thus for the first time unlocking K3P as the reversible potassiation product for elemental P anodes. Density functional theory calculations reveal the fast adsorption and diffusion kinetics of K‐ion at the heterostructure interface, which delivers a highly reversible specific capacity of 923 mAh g−1 at 0.05 A g−1, excellent rate capability (335 mAh g−1 at 1 A g−1), and cycling performance (83.3% capacity retention at 0.8 A g−1 after 300 cycles). These results can unlock other sluggish and irreversible battery chemistries toward sustainable and high‐performing energy storage.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Unlocking Deep and Fast Potassium‐Ion Storage through Phosphorus Heterostructure

Zhao

Geng

Zhou

et al. 2023

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“…However, owing to the uneven distribution and limited resources of lithium, attention has shifted to other alternative rechargeable battery technologies [2]. Potassium-ion batteries (KIBs) are one of the promising candidates due to the abundance of potassium resources and the low cost of raw materials [3][4][5][6][7]. Considerable efforts have been devoted to searching for applicable anode materials to gain stable and fast K + insertion/extraction [8].…”

Section: Introductionmentioning

confidence: 99%

PEDOT-Coated Red Phosphorus Nanosphere Anodes for Pseudocapacitive Potassium-Ion Storage

Zhao

Wang

et al. 2021

Nanomaterials

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Potassium-ion batteries (KIBs) have come up as a potential alternative to lithium-ion batteries due to abundant potassium storage in the crust. Red phosphorus is a promising anode material for KIBs with abundant resources and high theoretical capacity. Nevertheless, large volume expansion, low electronic conductivity, and limited K+ charging speed in red phosphorus upon cycling have severely hindered the development of red phosphorus-based anodes. To obtain improved conductivity and structural stability, surface engineering of red phosphorus is required. Poly(3,4-ethylenedioxythiophene) (PEDOT)-coated red phosphorus nanospheres (RPNP@PEDOT) with an average diameter of 60 nm were synthesized via a facile solution-phase approach. PEDOT can relieve the volume change of red phosphorus and promote electron/ion transportation during charge−discharge cycles, which is partially corroborated by our DFT calculations. A specific capacity of 402 mAh g−1 at 0.1 A g−1 after 40 cycles, and a specific capacity of 302 mAh g−1 at 0.5 A g−1 after 275 cycles, were achieved by RPNP@PEDOT anode with a high pseudocapacitive contribution of 62%. The surface–interface engineering for the organic–inorganic composite of RPNP@PEDOT provides a novel perspective for broad applications of red phosphorus-based KIBs in fast charging occasions.

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Vacancies‐Induced Delocalized States Cobalt Phosphide for Binder‐Free Anode Toward Stable and High‐Rate Sodium‐Ion Batteries

Zhang,

Cheng,

Xia

et al. 2024

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Metal phosphides with easy synthesis, controllable morphology, and high capacity are considered as potential anodes for sodium‐ion batteries (SIBs). However, the inherent shortcomings of metal phosphating materials, such as conductivity, kinetics, volume strain, etc are not satisfactory, which hinders their large‐scale application. Here, a CoP@carbon nanofibers‐composite containing rich Co─N─C heterointerface and phosphorus vacancies grown on carbon cloth (CoP1‐x@MEC) is synthesized as SIB anode to accomplish extraordinary capacity and ultra‐long cycle life. The hybrid composite nanoreactor effectively impregnates defective CoP as active reaction center while offering Co─N─C layer to buffer the volume expansion during charge–discharge process. These vast active interfaces, favored electrolyte infiltration, and a well‐structured ion‐electron transport network synergistically improve Na+ storage and electrode kinetics. By virtue of these superiorities, CoP1‐x@MEC binder‐free anode delivers superb SIBs performance including a high areal capacity (2.47 mAh cm−2@0.2 mA cm−2), high rate capability (0.443 mAh cm−2@6 mA cm−2), and long cycling stability (300 cycles without decay), thus holding great promise for inexpensive binder‐free anode‐based SIBs for practical applications.

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Potassium‐Ion Batteries: Red Phosphorus Potassium‐Ion Battery Anodes (Adv. Sci. 9/2019)

Abstract: In article number 1801354 , Hsing‐Yu Tuan and co‐workers effectively activate red phosphorus as an anode for potassium‐ion batteries with a record‐high specific energy density.

Cited by 3 publications

References 0 publications

Unlocking Deep and Fast Potassium‐Ion Storage through Phosphorus Heterostructure

Unlocking Deep and Fast Potassium‐Ion Storage through Phosphorus Heterostructure

PEDOT-Coated Red Phosphorus Nanosphere Anodes for Pseudocapacitive Potassium-Ion Storage

Vacancies‐Induced Delocalized States Cobalt Phosphide for Binder‐Free Anode Toward Stable and High‐Rate Sodium‐Ion Batteries

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