Rechargeable batteries are attractive power storage equipment for a broad diversity of applications. Lithium-ion (Li-ion) batteries are widely used the superior rechargeable battery in portable electronics. The increasing needs in portable electronic devices require improved Li-ion batteries with excellent results over many discharge-recharge cycles. One important approach to ensure the electrodes’ integrity is by increasing the storage capacity of cathode and anode materials. This could be achieved using nanoscale-sized electrode materials. In the article, we review the recent advances and perspectives of carbon nanomaterials as anode material for Lithium-ion battery applications. The first section of the review presents the general introduction, industrial use, and working principles of Li-ion batteries. It also demonstrates the advantages and disadvantages of nanomaterials and challenges to utilize nanomaterials for Li-ion battery applications. The second section of the review describes the utilization of various carbon-based nanomaterials as anode materials for Li-ion battery applications. The last section presents the conclusion and future directions.

Reduce graphene oxide (rGO) aerogels with different precursor graphene oxide sheet sizes are synthesized using L-ascorbic acid reduction followed by an ambient pressure drying method. The sheet sizes determine the oxygen functionality content during aerogel formation, which subsequently affect its structural properties. The optimized sheet size renders strong parallel sheet stacking to provide mechanical strength that withstands capillary action during aerogel formation with a high surface area (190.40 m 2 g −1 ) and pore volume (0.261 cm 3 g −1 ). Such surface properties enhance the electrochemical properties of rGO aerogel (182 F g −1 at 0.75 A g −1 ) and render it to be an excellent electrode material for a supercapacitor.

In terms of mechanical properties, atomically thin, 2D layered materials outperform traditional bulk materials and even some 1D nanowires. [10] In addition, new 2D-layered semiconductors could assist next-generation photodetectors avoid some of the limitations of traditional semiconductor technology. [11][12][13][14][15][16][17][18][19][20] Layered 2D semiconducting crystals have strong covalent bonds between their layers but they have weak van der Waals (vdW) bonds. As a result, it is possible to produce ultrathin 2D materials on flexible polymer substrates using mechanical transfer and delamination techniques that do not account for crystal lattice mismatch. [21][22][23] Second, trap states, such as point and line defects at a covalently or ionically bound interface are typically absent in 2D-layered crystals, which is due to the interlayer vdW bonding without any dangling bonds. This implies that reducing the chance of nonradiative carrier recombination will improve the efficiency of the devices that convert light into electricity. Several monolayer or multilayer 2D materials have more importantly been developed. [24][25][26][27][28][29][30][31] For example, transition-metal dichalcogenides (TMDs) have been discovered to be high-performance piezoelectric materials, [19,[32][33][34][35][36][37][38][39][40][41][42][43][44][45] h-BN, and III-VI compounds, which implies that the mechanical agitation can directly affect the device's performance. [46][47][48][49] Ultrathin 2D layered semiconductor photodetectors' photoelectric conversion efficiency is lower than anticipated despite these benefits because the active monolayer or a few layers do not effectively absorb light. Furthermore, most 2D semiconductors only have piezoelectricity in the layers with an odd number of layers, such as a single layer. This makes it hard to use them in piezo-phototronic systems. It is very important to look for suitable piezoelectric 2D crystals with no thickness limit in order to solve the problems with regards to making high-performance flexible self-powered photodetectors. A novel technique called the piezo-phototronic effect involves externally deforming the device to regulate the creation, recombination, and separation of charge carriers produced by photons. [50] This finding significantly affects how well a device performs in flexible optoelectronics. There has been a lot of interest in 2D piezo-phototronic nanomaterials since Wu et al. published the initial experimental investigation of monolayer MoS 2 -based strain-gated flexible optoelectronics. [51] The piezo-phototronic effect in 2D-layered piezoelectric P-N heterojunction flexible photodetectors has been studied in greatThe piezo-phototronic effect shows promise with regards to improving the performance of 2D semiconductor-based flexible optoelectronics, which will potentially open up new opportunities in the electronics field. Mechanical exfoliation and chemical vapor deposition (CVD) influence the piezo-phototronic effect on a transparent, ultrasensitive, and flexible v...

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