Boron-doped graphene anode coupled with microporous activated carbon cathode for lithium-ion ultracapacitors

Bhattacharjee, Udita; Bhowmik, Subhajit; Ghosh, Sourav; Naresh, Vangapally; Martha, Surendra K.

doi:10.1016/j.cej.2021.132835

Cited by 38 publications

(27 citation statements)

References 42 publications

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“…Both the materials show a characteristic peak at around 24-26°, corresponding to the (002) plane of graphitic carbon (Figure 2a). [7] Attributed to the formation of ordered turbostratic carbon and increased degree of graphitization with improved conductivity, activated carbon shows a slight shift towards the right side with increased peak intensity. [22] Additionally, a smaller peak at ≈43° is indexed to the (100) plane of carbon.…”

Section: Resultsmentioning

confidence: 99%

“…[22] Additionally, a smaller peak at ≈43° is indexed to the (100) plane of carbon. [7] Figure 2b shows the Raman spectra of both the activated and non-activated carbons in the range of 900-3000 cm −1 with D and G-bands positioned at 1350 and 1582 cm −1 respectively. The sp 2 hybridized graphitic layers and tangential vibration of carbon atoms symbolic of their degree of graphitization and conductivity is indicated by the G-band.…”

Section: Resultsmentioning

confidence: 99%

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A High‐Energy Density Li‐Ion Hybrid Capacitor Fabricated from Bio‐Waste Derived Carbon Nanosheets Cathode and Graphite Anode

et al. 2022

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Hence, the quest for a single energy storage system equipped with both high energy and power characteristics along with good rate and stability seems insatiable. Early 2000s has seen the advent of Li-ion hybrid capacitors (LIHC) which conjugates a high-capacity anode capable of high charge acceptance with reversible Li-ion insertion and de-insertion and a high surface area porous cathode with efficient ion adsorption properties exhibiting electrical double layer charge (EDLC) storage behavior. [4][5][6] This coalesces of a battery-type anode with high energy density, and supercapacitor cathode with high power density is expected to integrate the complementary characteristics of these two devices. The charge storage mechanism in LIHCs is different from that of conventional batteries and supercapacitors. Upon charging the system above its open-circuit voltage (OCV), the PF 6 − and Li + ions from the electrolyte get adsorbed on the cathode and intercalate on the anode, respectively. However, when the system is discharged below its OCV, the de-intercalated PF 6 − ions gets desorbed on the cathode and the reverse process takes place during charging. [7][8][9][10] Various metal alloys, oxides, and carbon materials are explored as electrodes for LIHCs. Specific to the carbon-based anode counterparts, graphene, graphite, hard carbon, soft carbon, carbon nanofibers, etc., are studied. [11][12][13] The LIHCs with graphene//activated carbon (AC), graphite// AC, hard carbon//AC have shown 80-150 Wh kg −1 energy densities at 150-65 W kg −1 power densities. [14][15][16] One of the reports investigates the electrochemical performance of natural graphite, artificial graphite, and hard carbon as anodes for LIHCs. [16] Solid electrolyte interface (SEI) formation is essentially required by the carbon anodes to protect the consumed electrolyte decomposition and continue Li-ion insertion and de-insertion. [17,18] In general, hard carbons are found to have superior initial irreversible capacity loss resulting from the energy consumed during the SEI formation. [19] Nevertheless, the hard carbons are also proven to have better rate capability and stability than other carbon anodes. In another report, the electrochemical performances of petroleum coke-derived soft carbon and graphite anodes were examined. The petroleum coke-derived soft carbon showed superior cycle stability similar to EDLCs while the graphite exhibited high charge storage properties. [20,21] The unaltered fact of high energy battery anodeThe Li-ion hybrid capacitor (LIHC) system explores the possibility of achieving both high energy and power density in a single energy storage system with an intercalation anode and capacitive cathode. However, to achieve a high power and energy-based system, the properties of the cathode electrode material are vital. Here, bio-waste plant stem-derived activated porous carbon is explored as a cathode for LIHC application. A specific surface area of 1826 m 2 g −1 , enhanced degree of crystallinity, and graphitization results for porous ca...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A High‐Energy Density Li‐Ion Hybrid Capacitor Fabricated from Bio‐Waste Derived Carbon Nanosheets Cathode and Graphite Anode

et al. 2022

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“…On the contrary, B content was 17.94 at.% for BGO and N content was 6.13 at.% for NGO. Binding energies for corresponding bonds having 0.5 ± relative variations are given in Table 2 22‐24 . Carbon C1s peaks for all doped systems appeared at ca.…”

Section: Resultsmentioning

confidence: 99%

“…Binding energies for corresponding bonds having 0.5 ± relative variations are given in Table 2. [22][23][24] Carbon C1s peaks for all doped systems appeared at ca. 284.6 eV which illustrates the existence of primary bonds C=C/C-C of graphene in-plane bonding network.…”

Section: Xps Analysismentioning

confidence: 99%

Binder free heteroatom‐doped graphene oxide as high energy density electrodes for supercapacitor applications

Latif

Raza

Rehman

et al. 2022

Intl J of Energy Research

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We explored the potential of heteroatom-doped graphene oxide (GO)-based electrodes for energy storage. Binder-free electrodes were synthesized using the hydrothermal method, where doping of GO and its electrode development was achieved simultaneously in one step. GO was doped with nitrogen (NGO) and boron (BGO) using urea and boric acid as nitrogen (N) and boron (B) sources, respectively. In addition, GO was also co-doped with B and N (BNGO). The atomic percentages of nitrogen and boron in NGO and BGO were found out to be 6.13% and 17.94%, respectively, as revealed by XPS. The BNGO had atomic percentages of boron and nitrogen as 23.76% and 3.64%, respectively. Electrodes were electrochemically characterized in 3 M KOH electrolyte by employing cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge-discharge (GCD). CV analysis revealed that NGO and BNGO exhibited superior charge storage capacity with a high specific capacitance of 855 and 811 F g À1 , respectively, at 1 m Vs À1 . CV data were further analyzed to identify and quantify charge storage mechanism, and it suggested that binder-free-doped electrodes exhibited diffusioncontrolled charge storage as dominant behavior. Thus, our results demonstrate an approach to dope GO and develop high-performance, binder-free electrodes for supercapacitor applications in a facile single-step hydrothermal method.

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“…Interestingly, there are many experimental activities concerning graphene as a LIB anode [36,[106][107][108][109]. For instance, Pan et al [105] synthesized disordered graphene sheets by different means including electron beam irradiation, low-temperature pyrolysis, and hydrazine reduction process.…”

Section: Graphenementioning

confidence: 99%

Carbon-based materials and their composites as anodes: A review on lithium-ion batteries

Fakić

Kumar

Alipour

et al. 2022

jcc

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Providing powerful, sustainable, and green energy sources is one of the most difficult challenges for maintaining a cleaner environment today. Rechargeable lithium-ion batteries (LIBs), as effective energy storage devices, have gained lots of attention because of their relatively low self-discharge rate, high energy density, and rapid response. Since the efficiency of LIBs is significantly dependent on electrode materials, special consideration has been given to the design of different electrodes. Carbon-based materials are considered as promising LIB anode materials because of their unique structural, electrical, and mechanical properties. Nonetheless, more research is still needed to identify most optimal carbonaceous materials for improving the electrochemical, thermal, and mechanical properties of anodes. In this regard, transition metals and silicon (Si), as high-capacity materials, can be combined with carbon to create high-potential LIBs. This paper reviews various carbonaceous materials and their composites used as LIB anodes. Finally, present challenges and future outlook on these anodes are presented.

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Boron-doped graphene anode coupled with microporous activated carbon cathode for lithium-ion ultracapacitors

Cited by 38 publications

References 42 publications

A High‐Energy Density Li‐Ion Hybrid Capacitor Fabricated from Bio‐Waste Derived Carbon Nanosheets Cathode and Graphite Anode

A High‐Energy Density Li‐Ion Hybrid Capacitor Fabricated from Bio‐Waste Derived Carbon Nanosheets Cathode and Graphite Anode

Binder free heteroatom‐doped graphene oxide as high energy density electrodes for supercapacitor applications

Carbon-based materials and their composites as anodes: A review on lithium-ion batteries

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