In-situ thermally fabricated porous and heterogeneous yolk-shell selenides wrapped in carbon as anode for high-performance hybrid lithium-ion capacitors

Tetrabutylammonium‐Intercalated 1T‐MoS2 Nanosheets with Expanded Interlayer Spacing Vertically Coupled on 2D Delaminated MXene for High‐Performance Lithium‐Ion Capacitors

“…These results are superior to the previous LICs, such as FeS 2 /C//AC (152 Wh kg −1 ), [ 66 ] MoS 2 //AC (75 Wh kg −1 ), [ 67 ] MoS 2 /CP//21KS (88 Wh kg −1 ), [ 68 ] AC//TiO 2 @PCNF‐12 (67 Wh kg −1 ), [ 69 ] CTAB‐Sn(IV)@Ti 3 C 2 T x //AC (106 Wh kg −1 ), [ 31 ] E‐NF@N‐CNB//GCNS (78 Wh kg −1 ), [ 70 ] NPCM‐A//MoS 2 /N‐NPCM (120 Wh kg −1 ), [ 71 ] Ti 3 C 2 T x /CNT//AC (67 Wh kg −1 ), [ 13 ] and Z@C@P//AC (136 Wh kg −1 ). [ 72 ] Moreover, the GNC//1T‐MoS 2 /d‐Ti 3 C 2 T x LIC shows superior long‐term cycling stability with a capacity retention of 83% after 5000 times at 2 A g −1 as well as a nearly 100% Coulombic efficiency (Figure 7f). Besides, comparing with previous studies about MXenes or MoS 2 used in LICs (Tables S2 and S3, Supporting Information), this work has obvious advantages in all aspects of electrochemical performance.…”

Robust and Fast Lithium Storage Enabled by Polypyrrole-Coated Nitrogen and Phosphorus Co-Doped Hollow Carbon Nanospheres for Lithium-Ion Capacitors

“…The energy density and power density of the NPHCS@PPy//NPC LIC were calculated based on the GCD profiles and depicted in the Ragone plot (Figure 4E). The device achieves a high energy density of 145 W h kg −1 at a power density of 225 W kg −1 and still retains a decent energy density of 59 W h kg −1 even at a high power density of 22,500 W kg −1 , which are superior to previously reported LICs, such as N-doped porous carbon (NPC)//NPC (Zou et al, 2020), High-defect mesoporedominant porous carbon (HDMPC)//HDMPC (Niu et al, 2018), Fe 3 O 4 @C//CNT@PPy (Han et al, 2019), MnO@C// Porous carbon (PC) (Yan et al, 2018), ZnSe@CoSe 2 @C@Ndoped carbon (NC)//AC (Chen et al, 2020), Pre-lithiated graphene (PG)//AC (Ren et al, 2014), TiNb 2 O 7 @C//Carbon fibers (CFs) (Wang and Shen, 2015), Porous carbon frameworks (PCF)//PCF (Qian et al, 2021) (Cheng et al, 2019), MnNCN//AC (Liu et al, 2017) and Co 3 ZnC@N-doped carbon (NC)// Mesoporous carbon (MC) (Zhu et al, 2018). The detail comparison are shown in Supplementary Table S1.…”

Scalable Production of Wearable Solid‐State Li‐Ion Capacitors from N‐Doped Hierarchical Carbon

“…Furthermore, the flexible LIC also displays excellent rate capability that can retain 45 F g ‐1 (31.3 mAh g ‐1 ) at a large current density of 5 A g ‐1 , as shown as in Figure 5e. Ragone plot obtained from the GCD tests presents that as‐prepared LIC shows an energy density of 170 Wh kg ‐1 based on the total mass of active materials on both cathode and anode at 300 W kg ‐1 , which is superior to the previously reports, [ 51–60 ] as shown as in Figure 5f. Moreover, the as‐prepared flexible LIC presents an excellent cyclic stability with a capacity retention of 91% after 10 000 cycles at the current density of 2 A g ‐1 and the coulombic efficiency keeps nearly 100% during the cycling tests (Figure 5g).…”