Anode Materials: Nanosheets‐Assembled CuSe Crystal Pillar as a Stable and High‐Power Anode for Sodium‐Ion and Potassium‐Ion Batteries (Adv. Energy Mater. 20/2019)

Lin, Hezhe; Li, Ma‐Lin; Yang, Xu Sheng; Yu, Dongxu; Zeng, Yi; Wang, Chunzhong; Chen, Gang; Du, Fei

doi:10.1002/aenm.201970073

Cited by 34 publications

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“…[ 134,139 ] As seen in Figure 18 a,b, CoSe 2 features only one well‐shaped cathodic peak in a conventional carbonate electrolyte, but show three peaks in the diglyme electrolyte. [ 151,154 ] Such CV patterns were also observed for other TMSe (FeSe 2 , [ 139 ] Fe 7 Se 8 , [ 146 ] ZnSe, [ 143 ] CuSe, [ 155 ] etc.) in the diglyme electrolyte, but the underlying mechanisms are still suggested to be the reformation of TMSe rather than the phase segregation of transition metals and selenium.…”

Section: Conversion‐type Materialssupporting

confidence: 57%

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Yang

Rogach

2020

Advanced Energy Materials

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type is cheap but with a rather low energy density and cannot survive many cycles; the latter type has higher energy density and longer cycle life, but is more expensive. [3] Both those secondary batteries suffer from the memory effect, and their use is under serious environmental concerns due to the involvement of the toxic lead and cadmium. [3] Nickel-metal hydride (Ni-MH) batteries can deliver higher energy capacity (the amount of stored energy in per unit mass, usually measured in Wh kg -1 ) and are more environmentally friendly, and from these reasons they used to dominate the market for electrical tools and EV. [4] At present, however, the share of Ni-MH batteries is shrinking, as we have another choice with a much higher energy density, namely lithium ion batteries (LIBs). The energy density of Ni-MH batteries is 60-70 Wh kg -1 , and that of LIBs was about 110 Wh kg -1 when they were commercially launched. [5] In the last decade, the price of LIBs decreased by ≈80% (now reaching <$200 kWh -1 ), and their energy density has been significantly improved (>200 Wh kg -1 ). [6] Other advantages of LIBs include long cycle life, low self-discharge, and absence of the memory effect. Thus far, being cost-effective and performance-competitive, LIBs have conquered the market for various important applications such as mobile phones, portable electronics, and EV.Beyond the state-of-the-art LIBs, efforts of battery researchers are going into following directions. The energy density of gasoline is about 13 kWh kg -1 , a value LIBs would never get close to. [7] It is normal to have "range anxiety" in the transition from petrol vehicles to EV. To eliminate such anxiety and make LIBs more competitive, intensive efforts are being placed into the research of high-capacity electrode materials for LIBs (such as silicon and lithium metal anode) and other battery systems (e.g., lithium-sulfur, lithium-air, and zinc-air batteries). [8] Another important direction is the development of safer batteries, such as aqueous and all-solid-state batteries, as safety concerns on LIBs are mainly related to the use of flammable electrolytes. [9,10] At the same time, the demand for LIBs worldwide is still increasing, and the production of the LIBs is growing rapidly, while the important constituting elements of those batteries, especially lithium and cobalt, are limited in supply. [5] Even though the availability of lithium at the present time may not be the major problem, and the recycling of used LIBs is under consideration, the world is faced with the potential risks in supply chains, as the annual global lithium production has already surpassed 0.085 million tons in 2018, while the total lithium reserve is estimated to be ≈14 million The increase in electricity generation poses growing demands on energy storage systems, thus offering a chance for the success of the reliable and cost-effective energy storage technologies. Sodium ion batteries are emerging as such a technology, which is however not yet mature enough to enter the market. At th...

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Section: Conversion‐type Materialssupporting

confidence: 57%

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Yang

Rogach

2020

Advanced Energy Materials

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“…As can be seen, XRD profiles with different state ( Figure a) of discharge/charge in the first cycle at a current density of 25 mA g −1 were collected in Figure 5b. As well demonstrated in the literature, the elemental Se and P can uptake K + when used as anode, and the final discharged product is K 2 Se (CIF number:60 440) and K 3 P (ICSD.No. 25 550), respectively.…”

Section: Resultsmentioning

confidence: 53%

“…25 550), respectively. For Se 3 P 4 @C composite anode, the characteristic peaks of K 2 Se (22.5°) and K 3 P (25.3°) phases were also observed when discharged to 0.5 V and these peaks become stronger when further discharged to 0.01 V, as shown in Figure 5b . The strong peak at 25.3° corresponds to the (102) of layered structure of K 3 P phase.…”

Section: Resultsmentioning

confidence: 87%

Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Zhao

et al. 2020

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Potassium‐ion batteries have attracted increasing attention for next‐generation energy storage systems due to their high energy density and abundance of potassium. However, the lack of suitable anode highly hampers its practical application due to the large ionic radius of K+. Herein, a Se3P4@mesoporous carbon (Se3P4@C) composite is reported as a high‐performance anode for potassium‐ion batteries. The Se3P4@C composite is synthesized through an in situ combination reaction between red phosphorus and Se within a porous carbon matrix. In this way, the nano‐sized Se3P4 is well confined in the porous carbon and thus exhibits a close contact with the carbon matrix. This can significantly improve the conductivity and alleviate the volume change during the cycling process. As a result, the Se3P4@C exhibits a high reversible initial capacity of 1036.8 mAh g−1 at a current density of 50 mA g−1 as well as an excellent cycle performance with a capacity decay of 0.07% per cycle over 300 cycles under 1000 mA g−1. In terms of high specific capacity and stable cycling performance, the Se3P4@C anode is a promising candidate for advanced potassium‐ion batteries.

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“…It is natural to use one of the existing PIBs anode materials in the PIHCs system. There are many kinds of PIBs anode materials, including metal, [ 10 ] transition‐metal selenides/sulfides, [ 11,12 ] alloy‐based materials, [ 13 ] and carbon‐based materials. [ 14–18 ] The carbon‐based anode with the intercalation mechanism is regarded as one of the best candidates for a PIHC in a large‐scale practical storage application in the future.…”

Section: Introductionmentioning

confidence: 99%

Rational Construction of Nitrogen‐Doped Hierarchical Dual‐Carbon for Advanced Potassium‐Ion Hybrid Capacitors

Ruan

Chen

et al. 2020

Advanced Energy Materials

203

139

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Potassium‐ion hybrid capacitors (PIHCs), elaborately integrate the advantages of high output power as well as long lifespan of supercapacitors and the high energy density of batteries, and exhibit great possibilities for the future generations of energy storage devices. The critical next step for future implementation lies in exploring a high‐rate battery‐type anode with an ultra‐stable structure to match the capacitor‐type cathode. Herein, a “dual‐carbon” is constructed, in which a three‐dimensional nitrogen‐doped microporous carbon polyhedron (NMCP) derived from metal‐organic frameworks is tightly wrapped by two‐dimensional reduced graphene oxide (NMCP@rGO). Benefiting from the synergistic effect of the inner NMCP and outer rGO, the NMCP@rGO exhibits a superior K‐ion storage capability with a high reversible capacity of 386 mAh g−1 at 0.05 A g−1 and ultra‐long cycle stability with a capacity of 151.4 mAh g−1 after 6000 cycles at 5.0 A g−1. As expected, the as‐assembled PIHCs with a working voltage as high as 4.2 V present a high energy/power density (63.6 Wh kg−1 at 19 091 W kg−1) and excellent capacity retention of 84.7% after 12 000 cycles. This rational construction of advanced PIHCs with excellent performance opens a new avenue for further application and development.

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Anode Materials: Nanosheets‐Assembled CuSe Crystal Pillar as a Stable and High‐Power Anode for Sodium‐Ion and Potassium‐Ion Batteries (Adv. Energy Mater. 20/2019)

Cited by 34 publications

References 0 publications

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Rational Construction of Nitrogen‐Doped Hierarchical Dual‐Carbon for Advanced Potassium‐Ion Hybrid Capacitors

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Anode Materials: Nanosheets‐Assembled CuSe Crystal Pillar as a Stable and High‐Power Anode for Sodium‐Ion and Potassium‐Ion Batteries (Adv. Energy Mater. 20/2019)

Cited by 34 publications

References 0 publications

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Advanced Se3P4@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Rational Construction of Nitrogen‐Doped Hierarchical Dual‐Carbon for Advanced Potassium‐Ion Hybrid Capacitors

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Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries