Highly disordered hard carbon derived from skimmed cotton as a high-performance anode material for potassium-ion batteries

He, Xiaodong; Liao, Jiaying; Tang, Zhongfeng; Xiao, Li‐Na; Ding, Xiang; Hu, Qiao; Zhang, Wen; Chen, Chunhua

doi:10.1016/j.jpowsour.2018.06.073

Cited by 110 publications

(45 citation statements)

References 34 publications

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“…The high peak ratio of D to G was 1.52, which implied the extremely low crystallinity of rGO. This claim was consistent with the absence of graphene peak in the XRD pattern of the ReSe 2 @rGO sample . The Eg and Ag‐like peaks of the ReSe 2 were also detected at 125 and 160 cm −1 , respectively …”

supporting

confidence: 87%

Rhenium Diselenide Anchored on Reduced Graphene Oxide as Anode with Cyclic Stability for Potassium‐Ion Battery

Yang

et al. 2019

Physica Rapid Research Ltrs

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An effective route is developed to fabricate ultrathin rhenium diselenide (ReSe2) nanosheets anchored on reduced graphene oxide (rGO) nanoflakes (ReSe2@rGO). When the ReSe2@rGO is used as an anode material in the potassium‐ion batteries (PIBs), the graphene offers a conductive matrix to buffer the volume alteration during repeated K+ insertion/extraction cycles. The stable interfacial connection between ReSe2 and graphene greatly promotes the integration of the active ReSe2 nanosheets, preventing their agglomeration. At the same time, these ultrathin nanosheets shorten the ion/electron diffusion path, leading to stable cyclic performance. As a result, the ReSe2@rGO anode enhances the electrochemical performance of the as‐synthesized PIB with a high specific capacity of over 250 mAh g−1 at a current density of 500 mA g−1 even after 200 cycles. Excellent rate performance and lengthy cyclic performance with 150 mAh g−1 at 2 A g−1 are also observed even after 500 cycles.

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supporting

confidence: 87%

Rhenium Diselenide Anchored on Reduced Graphene Oxide as Anode with Cyclic Stability for Potassium‐Ion Battery

Yang

et al. 2019

Physica Rapid Research Ltrs

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“…Carbonaceous materials are very attractive for PIBs anodes owing to their low price, high conductivity, and environmentally friendly. Since researchers found that K + can intercalate into graphite, many carbonaceous anode materials for PIBs have been investigated, including graphite, graphene, soft/hard carbon, heteroatom‐doped carbon, etc. Nevertheless, the theoretical capacity of graphite for PIBs is only 279 mA h g −1 by forming a KC 8 compound, 30% less than that of LIBs.…”

Section: Introductionmentioning

confidence: 99%

Oxygen/Fluorine Dual‐Doped Porous Carbon Nanopolyhedra Enabled Ultrafast and Highly Stable Potassium Storage

Wang

et al. 2019

Adv Funct Materials

127

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Carbon-based materials are promising anodes for potassium-ion batteries (PIBs). However, due to the significant volume expansion and structural instability, it is still a challenge to achieve a high capacity, high rate and long cycle life for carbonaceous anodes. Herein, oxygen/ fluorine dual-doped porous carbon nanopolyhedra (OFPCN) is reported for the first time as a novel anode for PIBs, which exhibits a high reversible capacity of 481 mA h g −1 at 0.05 A g −1 and excellent performance of 218 mA h g −1 after 2000 cycles at 1 A g −1 with 92% capacity retention. Even after 5000 robust cycles at 10 A g −1 with charging/discharging time of around 40 s, an unprecedented capacity of 111 mA h g −1 is still maintained. Such ultrafast potassium storage and unprecedented cycling stability have been seldom reported in PIBs. Quantitative kinetics analysis reveals that both diffusion and capacitance processes are involved in the potassium storage mechanism. Density functional theory calculations demon strate that the O/F dual-doped porous carbon promotes the K-adsorption ability and can absorb multiple K atoms with slight structural distortion, which accounts for the high specific capacity, outstanding rate capability, and excellent cycling stability of the OFPCN anode.

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“…[24][25] The short-range order with turbostratic nanodomains and associated increased interlayer spacing with respect to regular long-range order graphite makes the potassium-ion intercalation more feasible and without significant volume expansion. [26][27] Recently, from an environmental sustainability point of view, hard carbons derived from biomass sources represent an attractive class of anode materials for secondary rechargeable K + and Na + ion batteries. [25,[27][28][29] Moreover, their natural renewability and abundance from a wide range of (plant biomass, bacterial cellulose) source combined with the ability to functionalize, tune carbonization parameters and therefore the functionalities, surface area and structural morphologies of final carbon have fuelled the research efforts on biomass-derived carbon.…”

Section: Introductionmentioning

confidence: 99%

“…[26][27] Recently, from an environmental sustainability point of view, hard carbons derived from biomass sources represent an attractive class of anode materials for secondary rechargeable K + and Na + ion batteries. [25,[27][28][29] Moreover, their natural renewability and abundance from a wide range of (plant biomass, bacterial cellulose) source combined with the ability to functionalize, tune carbonization parameters and therefore the functionalities, surface area and structural morphologies of final carbon have fuelled the research efforts on biomass-derived carbon. [25,[30][31][32][33] In this study, we purpose the use of commercially available microcrystalline cellulose powder to produce hard carbons by simple one-step pyrolysis at different temperatures in an inert atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Potassium‐Ion Storage in Cellulose‐Derived Hard Carbon: The Role of Functional Groups

Kumar

Gaddam

Niaei

et al. 2020

Batteries & Supercaps

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Potassium‐ion storage is being explored by researchers for its advantages in forming graphite‐based intercalation compounds, with cost‐effective production compared to lithium‐ion systems. However, its poor performance in graphite‐based platforms, owing to the volume expansion required for intercalation, has demanded alternative materials for reversible potassiation. Herein, we demonstrate a simple one‐step pyrolysis approach to develop an amorphous hard carbon material from commercial cellulose for high‐performance potassium‐ion batteries (KIB). The larger interlayer spacing (∼0.4 nm) alongside the electronegative oxygen functional groups promotes potassium‐ion storage. High capacity, good rate and long cycling performance with lower‐volume expansion could be credited to the amorphous carbon that possesses turbostratic nanodomains. Further, oxygen functional groups on the carbon material are identified in our experimental studies, and density functional theory simulations indicate that these are likely to enhance the potassium‐ion capacity of the materials.

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Highly disordered hard carbon derived from skimmed cotton as a high-performance anode material for potassium-ion batteries

Cited by 110 publications

References 34 publications

Rhenium Diselenide Anchored on Reduced Graphene Oxide as Anode with Cyclic Stability for Potassium‐Ion Battery

Rhenium Diselenide Anchored on Reduced Graphene Oxide as Anode with Cyclic Stability for Potassium‐Ion Battery

Oxygen/Fluorine Dual‐Doped Porous Carbon Nanopolyhedra Enabled Ultrafast and Highly Stable Potassium Storage

Potassium‐Ion Storage in Cellulose‐Derived Hard Carbon: The Role of Functional Groups

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