Chuang Yu

All-solid-state lithium metal batteries (ASSLMBs) hold tremendous promise as next-generation energy storage devices due to their remarkable energy densities. Nevertheless, uncontrolled growth of lithium dendrites resulting from nonuniform deposition and significant volume expansion hinders the commercial application of ASSLMBs. Herein, we designed an AgPF6 modified lithium composite anode to stabilize the interface between the lithium metal anode and Li5.5PS4.5Cl1.5 electrolytes. The optimal AgPF6 modified lithium composite accelerates Li diffusion within bulk lithium anode and facilitates the uniform deposition for lithium metal during the electrochemical process due to the generation of LiF-interface and Li–Ag alloy, which restricts the accumulation of inactive lithium. The enhanced compatibility between Li metal and sulfide electrolyte have been confirmed in both symmetric cells and ASSLMBs. The …

The fashion industry’s negative impact and overconsumption require urgent action to improve and reduce fashion consumption. Tactile gesture plays a vital role in understanding, selecting, and feeling attached to clothes. In this paper, we introduce the FabricTouch II dataset with multimodal infromation, which focuses on fabric assessment touch gestures and aims to support sustainable fashion consumption. By integrating gesture labels, we enhance the dataset’s comprehensiveness, improve recognition accuracy, and provide valuable information for consumers and intelligent systems, such as conversational agents in shop or home wardrobe. Additionally, this study has made preliminary explorations on recognizing fabric touch gestures using time-spectral representations of EMG combined with graph representations on this small batch dataset. The experiment found that the graph representation of EMG outperforms the regular neural network and that the representation capacity of bilateral EMG data is superior to that of unilateral data.

FeS2 conversion electrode materials demonstrate excellent (electro)chemical stability with sulfide electrolytes and can provide a high capacity at room temperature. However, the effect of operating temperature on their conversion kinetics and capacity has not yet been reported. In this study, we incorporated ionic conductors of Na3PS4 as ionic additives in the composite cathode and separator layer. The additives exhibit high ionic conductivity and good anode stability. The increased operating temperature accelerates the Na+ ion diffusion rate in both Na3PS4 solid electrolyte and cathode composite mixture, resulting in reduced resistance and excellent electrochemical performance for the corresponding all-solid-state sodium battery. XPS results indicate that the FeS2 active material maintains its original activity over extended cycles at varying operating temperatures. Moreover, the Na3PS4 solid electrolyte …

Spinel oxide anode materials are hardly used for commercial lithium-ion batteries because of their evident volume expansion in the discharging process and poor electronic conduction. Preparing a composite material of nanostructured spinel bimetallic oxides and carbon will solve the above problems and achieve outstanding electrochemical performance. In this study, an ultrafast approach (only 10 min) to synthesize spinel AMn2O4 (A= Co, Mn, Zn) nanopolyhedras and their composites with GO was successfully developed. Integrating spinel CoMn2O4 nanopolyhedras with GO can profoundly inhibit the problem of volume expansion but also eminently upgrading conductivity. The CoMn2O4/GO composite anode displays competent cyclic life and rate capability for lithium ion battery, delivering a large capacity of 738 mAh g−1 after 340 cycles at 2 A g−1. The ultrafast approach and alluring electrochemical …

Transition metal nitride negative electrode materials with a high capacity and electronic conduction are still troubled by the large volume change in the discharging procedure and the low lithium ion diffusion rate. Synthesizing the composite material of F-doped Fe3N and an N-doped porous carbon framework will overcome the foregoing troubles and effectuate a preeminent electrochemical performance. In this study, we created a simple route to obtain the composite of F-doped Fe3N nanoellipsoids and a 3D N-doped porous carbon framework under non-ammonia atmosphere conditions. Integrating the F-doped Fe3N nanoellipsoids with an N-doped porous carbon framework can immensely repress the problem of volume expansion but also substantially elevate the lithium ion diffusion rate. When utilized as a negative electrode for lithium-ion batteries, this composite bespeaks a stellar operational life and rate capability, releasing a tempting capacity of 574 mAh g–1 after 550 cycles at 1.0 A g–1. The results of this study will profoundly promote the evolution and application of transition metal nitrides in batteries.

LiNi0.8Co0.15Al0.05O2 (NCA) is a promising cathode for sulfide-based solid-state lithium batteries (ASSLBs) profiting from its high specific capacity and voltage plateau, which yielding high energy density. However, the inferior interfacial stability between the bare NCA and sulfides limits its electrochemical performance. Hereien, the dual-electrolyte layer is proposed to mitigate this effect and enhance the battery performances of NCA-based ASSLIBs. The Li3InCl6 wih high conductivity and excellent electrochemcial stability act both as an ion additives to promote Li-ion diffusion across the interface in the cathode and as a buffer layer between the cathode layer and the solid electrolyte layer to avoid side reactions and improve the interface stability. The corresponding battery exhibits high discharge capacities and superior cyclabilities at both room and elevated temperatures. It exhibits discharge performance of 237 …

The addition of electrolyte additives is an effective strategy for tuning the property of the electrolyte to engineer the electrode/electrolyte interface, and there exist obvious discrepancies regarding the effect of fluoroethylene carbonate (FEC) as an electrolyte additive on the performance of cathodes. Herein FEC is introduced into the electrolyte of the LiMn0.8Fe0.2PO4/Li cell and its effect on the properties of the LiMn0.8Fe0.2PO4 is investigated. It is found that the addition of FEC in the electrolyte has a positive effect on the performance of the LiMn0.8Fe0.2PO4 cathode, which can be attributed to the reduced products generated by the interfacial side-reactions on the LiMn0.8Fe0.2PO4 cathode surface and the decreased metal dissolution in the FEC-containing electrolyte, thanks to the higher oxidation resistance of FEC and the easier and stronger binding of FEC and PF6−.

All-solid-state Li batteries (ASSLBs) using solid electrolytes (SEs) have gained significant attention in recent years considering the safety issue and their high energy density. Despite these advantages, the commercialization of ASSLBs still faces challenges regarding the electrolyte/electrodes interfaces and growth of Li dendrites. Elemental doping is an effective and direct method to enhance the performance of SEs. Here, we report an Al-F co-doping strategy to improve the overall properties including ion conductivity, high voltage stability, and cathode and anode compatibility. Particularly, the Al-F co-doping enables the formation of a thin Li-Al alloy layer and fluoride interphases, thereby constructing a relatively stable interface and promoting uniform Li deposition. The similar merits of Al-F co-doping are also revealed in the Li-argyrodite series. ASSLBs assembled with these optimized electrolytes gain good …

Humor is pervasive in our daily life. It serves not only to build rapport but also to ease tension during interactions and create stronger social interactions. In the realm of Human-Robot Interaction (HRI), humor also plays a vital role in fostering engaging and positive interactions. However, endowing robots with the ability to express humor appropriately is still a challenge. Drawing inspiration from pantomime and sign language humor, our research focuses on the role of semantic gestures in the social robot's expression of humor. In this work, we conducted an experiment in which NAO robot made humorous performances by using a series of semantic gestures. The results of the online survey show that the semantic gesture can significantly enhance the degree of funniness of the robot humor performance. Furthermore, the impact of the semantic gesture is closely tied to both the clarity of its expression and the …

FeS2 shows significant potential as cathode material for all-solid-state lithium batteries (ASSLBs) due to its high theoretical specific capacity, low cost, and environmental friendliness. However, the poor ion/electron conductivity and large volume variation effect of FeS2 inhibit its practical applications. Here, the influence of particle size of FeS2 on the corresponding sulfide-based solid-state batteries is carefully investigated by tuning FeS2 size. Moreover, low operating temperature is chosen to mitigate the large volume changes during cycling in the battery. S-FeS2 with smaller particle sizes delivers superior electrochemical performances than that of the larger L-FeS2 in Li5.5PS4.5Cl1.5-based ASSLBs under different operating temperatures. S-FeS2 shows stable discharge capacities during 50 cycles with a current density of 0.1 mA/cm2 under -20 °C. When the current density rises to 1.0 mA/cm2, it delivers an …

Compared to traditional lithium‐ion batteries with liquid electrolytes, all‐solid‐state lithium batteries have attracted extensive attention due to their heightened safety and energy density. Lithium argyrodite materials are promising solid electrolytes (SE) due to their high ionic conductivity, low grain boundary resistance, and favorable mechanical properties. However, the poor chemical/electrochemical stability of lithium argyrodite electrolytes toward the bare lithium metal anode inhibits their applications in all‐solid‐state lithium metal batteries (ASSLMBs). Here, Li‐SnF2 composite anodeswas used to induce the formation of solid electrolyte interphase (SEI) composed of LiCl, LiF, and Li22Sn5 at the Li/SE interface.  The high interface energy barriers for LiF and LiCl induces the uniform deposition of lithium ions, thus hindering the growth of lithium dendrites. Meanwhile, the fast Li‐ion diffusion coefficient of the Li22Sn5 …

In situations where both deaf and non-deaf individuals are present in a public setting, it would be advantageous for a robot to communicate using both sign and natural languages simultaneously. This would not only address the needs for diverse users but also pave the way for a richer and more inclusive spectrum of human-robot interactions. To achieve this, a framework for a bilingual robot has been proposed in this paper. The robot exhibits the ability to articulate messages in spoken language, complemented by non-verbal cues such as expressive gestures, all while concurrently conveying information through sign language. The system can generate natural language expressions with speech audio, spontaneous prosody-based gestures, and sign language displayed on a virtual avatar on a robot's screen. The preliminary findings from this research showcase the robot's capacity to seamlessly blend natural …

Na3Zr2Si2PO12 (NZSP) shows great potential as candidate of solid electrolyte for solid-state sodium batteries. Herein, a high density NZSP solid electrolyte with space group of C2/c is synthesized by a new strategy. Such new strategy rivets most of NaF at the grain boundaries, effectively increasing the density of NZSP pellets. A small amount of F- doped into the lattice alters the lattice parameters of NZSP. The riveted NaF and doped F- cooperatively enhance the ionic conductivity of NZSP solid electrolyte. The optimized NZSP solid electrolyte, containing 3 wt%NaF additives and sintered at 1050 °C, exhibits a room-temperature Na+ conductivity of 7.2×10−4 S cm−1 and low activation energy of 0.23 eV. The solid-state battery using the optimized sample NZSP+3 wt%NaF as solid electrolyte has a wide electrochemical window of up to 7.0 V (vs. Na+/Na) and ultra-stable cycling capability towards the bare …

Vanadium-based compounds have earned incremental attention as cathode for aqueous zinc ion batteries (AZIBs) due to their ideal electrical conductivity, rich valence states and flexible crystal structures. Unfortunately, their storage mechanisms are confusing and not well-established, especially for nitride. Herein, we have constructed a cubic vanadium nitride and nitrogen/sulfur doped carbon composite (VN@N/S–C) as a cathode for AZIBs. An in-depth examination of ex-situ XRD and XPS reveal that the electrochemical reduction during the first discharge process promotes a structural transformation of cubic VN to layered Zn3+x(OH)2V2O7·2H2O, thus permitting subsequent insertion of Zn2+ in such layered structure. Ex-situ SEM studies of electrodes further identify a morphology change of nanoparticles to nanosheets, corresponding to VN and Zn3+x(OH)2V2O7·2H2O, respectively. New storage mechanism-the …

Achieving high energy densities for all-solid-state lithium batteries is restricted by the poor high voltage stability of solid electrolytes. Herein, F-doping strategy is successfully employed on Li3InCl6 to obtain enhanced voltage stability and electrode compatability towards bare LiNi0.7Mn0.2Co0.1O2 at high voltages. The optimized Li3InCl5.5F0.5 electrolyte exhibits a decreased conductivity of 1.00 mS/cm, a wider voltage window, and improved electrochemical performance in solid-state batteries when cycled at upper cut-off voltages of 4.5 and 4.8 V (vs. Li+/Li0). The generation of more stable LiInF4 phase in the cathode mixture of Li3InCl5.5F0.5-based battery ensures superior electrochemical performances compared to the Li3InCl6-based battery. The former battery exhibits a higher discharge capacity of 218.9 mAh/g and coulombic efficiency of 86.7% for the first cycle, and retains 80.0% of its original value after 100 …

Theory of Mind (ToM) is a fundamental cognitive architecture that endows humans with the ability to attribute mental states to others. Humans infer the desires, beliefs, and intentions of others by observing their behavior and, in turn, adjust their actions to facilitate better interpersonal communication and team collaboration. In this paper, we investigated trust-aware robot policy with the theory of mind in a multiagent setting where a human collaborates with a robot against another human opponent. We show that by only focusing on team performance, the robot may resort to the reverse psychology trick, which poses a significant threat to trust maintenance. The human's trust in the robot will collapse when they discover deceptive behavior by the robot. To mitigate this problem, we adopt the robot theory of mind model to infer the human's trust beliefs, including true belief and false belief (an essential element of ToM). We designed a dynamic trust-aware reward function based on different trust beliefs to guide the robot policy learning, which aims to balance between avoiding human trust collapse due to robot reverse psychology. The experimental results demonstrate the importance of the ToM-based robot policy for human-robot trust and the effectiveness of our robot ToM-based robot policy in multiagent interaction settings.

Human skeleton-based gesture classification plays a dominant role in social robotics. Learning the variety of human skeleton-based gestures can help the robot to continuously interact in an appropriate manner in a natural human-robot interaction (HRI). In this paper, we proposed a Flow-based model to classify human gesture actions with skeletal data. Instead of inferring new human skeleton actions from noisy data using a retrained model, our end-to-end model can expand the diversity of labels for gesture recognition from noisy data without retraining the model. At first, our model focuses on detecting five human gesture actions (i.e., come on, right up, left up, hug, and noise-random action). The accuracy of our online human gesture recognition system is as well as the offline one. Meanwhile, both attain 100% accuracy among the first four actions. Our proposed method is more efficient for inference of new human …

Zinc-based batteries (ZBs) have been deemed as a potential substitute for lithium-ion batteries due to its unique advantages of abundant resources, low cost and acceptable energy density. Despite great progress in designing electrode materials has been made, the development of high-performance ZBs still remain challenges, such as the dendrite growth of zinc anode, hydrogen evolution reaction, limited electrochemical stability window, water evaporation, and liquid leakage. Gel polymer electrolytes (GPEs), including hydrous GPEs with low content of active water and anhydrous GPEs without the presence of water, are proposed to avoid these problems. Furthermore, employing GPEs is conductive to fabricate flexible devices owing to the good mechanical strength. To date, most of researches focus on discovering new GPEs and exploring its application on flexible or wearable devices. Furthermore, recent …

Lithium argyrodites electrolyte with high ionic conductivity and relatively lower cost show great potential as candidates for solid-state batteries. Further improvement of their conductivities can accelerate their applications. One of the means to significantly promote the conductivity of Li-ion is dual doping. Herein, Ag/Br dual-doping strategy is applied on Li6PS5Br (2.76 mS cm−1) to boast its conductivity to 6.15 mS cm−1 for Li5.55Ag0.05PS4.6Br1.4. The structural variations and chemical/electrochemical stability of the obtained electrolyte are carefully investigated. Li3InCl6 electrolyte is introduced in the new battery configuration to mitigate the interfacial instability with LiNi0.6Mn0.2Co0.2O2 active material enabling good electrochemical performances. The assembled battery delivers a discharge capacity of 160.8 mAh g−1 for the 1st cycle and maintains 85.9% of the initial value after 50 cycles at 0.5C. This modification …

Because of their large volume variation and inferior electrical conductivity, Mn3O4-based oxide anode materials have short cyclic lives and poor rate capability, which obstructs their development. In this study, we successfully prepared a Mn3O4/N-doped honeycomb carbon composite using a smart and facile synthetic method. The Mn3O4 nanopolyhedra are grown on N-doped honeycomb carbon, which evidently mitigates the volume change in the charging and discharging processes but also improves the electrochemical reaction kinetics. More importantly, the Mn—O—C bond in the Mn3O4/N-doped honeycomb carbon composite benefits electrochemical reversibility. These features of the Mn3O4/N-doped honeycomb carbon (NHC) composite are responsible for its superior electrochemical performance. When used for Li-ion batteries, the Mn3O4/N-doped honeycomb carbon anode exhibits a high reversible …