Hierarchically porous carbon supported Sn4P3 as a superior anode material for potassium-ion batteries

Li, Deping; Zhang, Yamin; Sun, Qing; Zhang, Shengnan; Wang, Zhongpu; Zhen, Liang; Si, Pengchao; Ci, Lijie

doi:10.1016/j.ensm.2019.04.037

Cited by 134 publications

(65 citation statements)

References 40 publications

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“…As the current density rolls back to 0.1 A g −1 , the specific capacity can be returned to 331.1 mAh g −1 . The above results indicate that the ED‐MoS 2 @CT electrode possesses the superior potassium storage properties, which are not only superior to the contrast samples (for the detail information, see Figure S12 in the Supporting Information) but also comparable for most previously reported PIB anode materials (Figure e) . Notably, the fabricated ED‐MoS 2 @CT electrode exhibits the outstanding cycling stability at high current densities.…”

Section: Resultssupporting

confidence: 65%

Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Cui

Liu

Feng

et al. 2020

Adv Funct Materials

159

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The large volume expansion induced by K+ intercalation is always a big challenge for designing high‐performance electrode materials in potassium‐ion storage system. Based on the idea that large‐sized ions should accommodate big “houses,” a facile‐induced growth strategy is proposed to achieve the self‐loading of MoS2 clusters inside a hollow tubular carbon skeleton (HTCS). Meantime, a step‐by‐step intercalation technology is employed to tune the interlayer distance and the layer number of MoS2. Based on the above, the ED‐MoS2@CT hybrids are achieved by self‐loading and anchoring the well‐dispersed ultrathin MoS2 nanosheets on the inner surface of HTCSs. This unique compositing model not only alleviates the mechanical strain efficiently, but also provides spacious “roads” (hollow tubular carbon skeleton) and “houses” (interlayer expanded ultrathin MoS2 sheets) for fast K+ transition and storage. As an anode of potassium‐ion batteries, the resultant ED‐MoS2@CT electrode delivers a high specific capacity of 148.5 mAh g−1 at 2 A g−1 after 10 000 cycles with only 0.002% fading per cycle. The assembled ED‐MoS2@CT//PC potassium‐ion hybrid supercapacitor device shows a high energy density of 148 Wh kg−1 at a power density of 965 W kg−1, which is comparable to that of lithium‐ion hybrid supercapacitors.

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Section: Resultssupporting

confidence: 65%

Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Cui

Liu

Feng

et al. 2020

Adv Funct Materials

159

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“…Inspired by the existing pioneering work involving graphite, tremendous efforts have been devoted to this area of research. To date, several categories of materials are verified to be effective for potassium storage in terms of anodes, including carbon nanophases (eg, hard carbon, graphite, and heteroatom‐doped carbon), alloy‐type (semi‐)metals (eg, Sn, Bi, Sb, and P), metal oxides (eg, Nb 2 O 5 , SnO 2 , Fe x O, and Sb 2 MoO 6 )/sulfides (eg, MoS 2 , VS 2 , SnS 2 , and Sb 2 S 3 ) and phosphides (eg, FeP, CoP, Sn 4 P 3 , and GeP 5 ), sylvite compounds (eg, KVPO 4 F, K 2 V 3 O 8 , KTi 2 (PO 4 ) 3 , and K x Mn y O z ), metal‐organic composites (eg, Co 3 [Co(CN) 6 ] 2 and K 1.81 Ni[Fe(CN) 6 ] 0.97 ·0.086H 2 O), and pure organic polymers (eg, boronic ester, fluorinated covalent triazine, perylene‐tetracarboxylate, perylenetetracarboxylic diimide, azobenzene‐4,4′‐dicarboxylic acid potassium, 2,2′‐azobis[2‐methylpropionitrile], and poly[pyrene‐ co ‐benzothiadiazole]). However, most carbon materials barely deliver reversible capacities exceeding 300 mAh g −1 despite their excellent electrochemical cyclability.…”

Section: Introductionmentioning

confidence: 99%

Metal chalcogenides for potassium storage

Zhou

Liu

Zhang

et al. 2020

InfoMat

178

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Potassium-based energy storage technologies, especially potassium ion batteries (PIBs), have received great interest over the past decade. A pivotal challenge facing high-performance PIBs is to identify advanced electrode materials that can store the large-radius K + ions, as well as to tailor the various thermodynamic parameters. Metal chalcogenides are one of the most promising anode materials, having a high theoretical specific capacity, high in-plane electrical conductivity, and relatively small volume change on charge/discharge. However, the development of metal chalcogenides for PIBs is still in its infancy because of the limited choice of high-performance electrode materials. However, numerous efforts have been made to conquer this challenge. In this article, we overview potassium storage mechanisms, the technical hurdles, and the optimization strategies for metal chalcogenides and highlight how the adjustment of the crystalline structure and choice of the electrolyte affect the electrochemical performance of metal-chalcogenide-based electrode materials. Other potential potassium-based energy storage systems to which metal chalcogenides can be applied are also discussed. Finally, future research directions focusing on metal chalcogenides for potassium storage are proposed. K E Y W O R D Senergy storage, metal chalcogenides, modification strategies, nanocomposites, potassium ion batteries

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“…Potassium-ion batteries (PIBs), rooting in competitive crust reserves (~15000 ppm) and feasible K-ion insertion/extraction in commercial graphite electrode, are attracting enormous attentions. Besides, the redox potential of K + /K (-2.93V) is lower than that of Na + /Na (-2.71V), and close to Li + /Li (-3.04 V), indicating that PIBs can work within a high voltage platform and deliver a high energy density 6,7 . In addition, in organic solvent electrolytes, such as propylene carbonate (PC), K + /K (-2.88 V) exhibits the lowest redox potential compared to Li + /Li (-2.79 V) and Na + /Na (-2.56 V) 8,9 .…”

Section: Introductionmentioning

confidence: 96%

Calcium Gluconate-derived Ultrathin Carbon Nanosheets for High-Efficient Capacitive Energy Storage

Zhang¹,

Wang²,

et al. 2020

Preprint

Self Cite

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Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (497.7 mAh g-1), superior rate capability (154.8 mAh g-1 at an ultrahigh current density of 5.0 A g-1) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~72.4% after 4000 cycles at 1.0 A g-1). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g-1, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.

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Hierarchically porous carbon supported Sn4P3 as a superior anode material for potassium-ion batteries

Cited by 134 publications

References 40 publications

Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Metal chalcogenides for potassium storage

Calcium Gluconate-derived Ultrathin Carbon Nanosheets for High-Efficient Capacitive Energy Storage

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Hierarchically porous carbon supported Sn4P3 as a superior anode material for potassium-ion batteries

Cited by 134 publications

References 40 publications

Controlled Design of Well‐Dispersed Ultrathin MoS2 Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Controlled Design of Well‐Dispersed Ultrathin MoS2 Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Metal chalcogenides for potassium storage

Calcium Gluconate-derived Ultrathin Carbon Nanosheets for High-Efficient Capacitive Energy Storage

Contact Info

Product

Resources

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Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions

Controlled Design of Well‐Dispersed Ultrathin MoS₂ Nanosheets inside Hollow Carbon Skeleton: Toward Fast Potassium Storage by Constructing Spacious “Houses” for K Ions