Anion-hosting cathodes capable of reversibly storing large-size anions play a leading role in dual-ion batteries (DIBs). The purpose of the present review is to summarize the most promising anion-hosting cathodes for current and late-stage DIBs. This review first summarizes the developments in conventional graphite cathodes, especially the latest advances in the graphite-related research. Next, organic cathodes for the anion storage are discussed, including aromatic amine polymers, heterocyclic polymers, bipolar compounds, and all-carbon-unsaturated compounds. Then, the review focuses on the conversion-type cathodes with high theoretical specific capacities. Finally, the future research directions of the cathodes of DIBs are proposed. 

Anion-hosting cathodes for current and late-stage dual-ion batteries

The utilization of hydrogen (H2) as a renewable substitute for fossil fuel can mitigate issues related to energy shortage and associated global warming. The generation of H2 via water splitting...

2D Transition Metal-Based Phospho-Chalcogenides and their Applications in the Photocatalytic and Electrocatalytic Hydrogen Evolution Reaction

Developing eco-friendly strategies to produce green fuel has attracted continuous and extensive attention. In this study, a novel gas-templating method was developed to prepare 2D porous S-doped g-C3N4 photocatalyst through simultaneous pyrolysis of urea (main g-C3N4 precursor) and ammonium sulfate (sulfur source and structure promoter). Different content of ammonium sulfate was examined to find the optimal synthesis conditions and to investigate the property-governed activity. The physicochemical properties of the obtained photocatalysts were analyzed by X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), scanning transmission electron microscopy (STEM), specific surface area (BET) measurement, ultraviolet-visible light diffuse reflectance spectroscopy (UV/vis DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectroscopy and reversed double-beam photo-acoustic spectroscopy (RDB-PAS). The as-prepared S-doped g-C3N4 photocatalysts were applied for photocatalytic H2 evolution under vis irradiation. The condition-dependent activity was probed to achieve the best photocatalytic performance. It was demonstrated that ammonium sulfate played a crucial role to achieve concurrently 2D morphology, controlled nanostructure, and S-doping of g-C3N4 in a one-pot process. The 2D nanoporous S-doped g-C3N4 of crumpled lamellar-like structure with large specific surface area (73.8 m2 g−1) and improved electron−hole separation showed a remarkable H2 generation rate, which was almost one order in magnitude higher than that of pristine g-C3N4. It has been found that though all properties are crucial for the overall photocatalytic performance, efficient doping is probably a key factor for high photocatalytic activity. Moreover, the photocatalysts exhibit significant stability during recycling. Accordingly, a significant potential of S-doped g-C3N4 has been revealed for practical use under natural solar radiation.

/pdf/development-of-sulfur-doped-graphitic-carbon-nitride-for-3h6yjl08.pdf

Development of Sulfur-Doped Graphitic Carbon Nitride for Hydrogen Evolution under Visible-Light Irradiation

Abstract Aqueous zinc-ion batteries (AZIBs) are one of the most compelling alternatives of lithium-ion batteries due to their inherent safety and economics viability. In response to the growing demand for green and sustainable energy storage solutions, organic electrodes with the scalability from inexpensive starting materials and potential for biodegradation after use have become a prominent choice for AZIBs. Despite gratifying progresses of organic molecules with electrochemical performance in AZIBs, the research is still in infancy and hampered by certain issues due to the underlying complex electrochemistry. Strategies for designing organic electrode materials for AZIBs with high specific capacity and long cycling life are discussed in detail in this review. Specifically, we put emphasis on the unique electrochemistry of different redox-active structures to provide in-depth understanding of their working mechanisms. In addition, we highlight the importance of molecular size/dimension regarding their profound impact on electrochemical performances. Finally, challenges and perspectives are discussed from the developing point of view for future AZIBs. We hope to provide a valuable evaluation on organic electrode materials for AZIBs in our context and give inspiration for the rational design of high-performance AZIBs. 

Unveiling Organic Electrode Materials in Aqueous Zinc-Ion Batteries: From Structural Design to Electrochemical Performance

In the present context of the global energy crisis, green hydrogen is gaining attention as a potent energy carrier. The hydrogen business has experienced a significant upsurge as a result of the worldwide trend towards decarbonization and mitigating the reckless use of fossil fuels. In this review, an outline of current trends, major barriers, and envisaged paths for future advancement of photolysis of hydrogen generation is addressed, with a special emphasis on hydrogen evolution reactions via hybrid photocatalysts that are mostly derived from metal-organic frameworks (MOFs), covalent organic framework (COF), graphitic carbon nitride (g-C3N4), low-dimensional transition metal dichalcogenides, metal oxides and molecular catalytic systems. This paper also presents an in-depth present time assessment of green hydrogen economy, which implement both traditional and renewable sources of energy. Additionally, the paper ruminates on the utilization, storage, transportation and supply of hydrogen, as well as the key barriers and prospects associated with the industrial implementation of such systems. 

Contemporary Progress on Photo-induced Green Hydrogen Evolution: Potential, Challenges, and Perspectives for the Hydrogen Energy based Economy -An Updated Review

A novel small organic molecule namely N,N’-bis(2-anthraquinone)-dihydrophenazine (DAQ-DPZ, 270 mAh/g) with n-p-n molecular heterojunction configuration is designed as the bipolar electrode material for Li-dual-ion batteries. To delay the dissolution for small-molecule organic electrodes, DAQ-DPZ is further coated by a protective carbon layer (DAQ-DPZ@C) through the process called surface self-carbonization. As expected, the resulting DAQ-DPZ@C can show the peak discharge capacity of 269 mAh/g and high median potential of 2.62 V in 1.6–4.4 V (vs. Li+/Li), corresponding to the peak energy density of 704 Wh kg−1 in Li-dual-ion half cells. Furthermore, DAQ-DPZ@C in the symmetric Li-dual-ion batteries can deliver the peak discharge capacity of 88 mAh/gcathode and the peak energy density of 113 Wh kg-1cathode, stably running for over 5000 cycles. To the best of our knowledge, these results are the top ones for small-molecule organic bipolar electrodes in the symmetric Li-dual-ion batteries. 

Carbon-coating small-molecule organic bipolar electrodes for symmetric Li-dual-ion batteries

A non-flammable potassium-ion battery is constructed by using an advanced n-type organic cathode called 2PTCDA@C and K-metal anode in triethyl phosphate electrolyte, which can show the peak discharge capacity of 125 mAh g−1cathode in 1.5–3.5 V and stably run for 100 cycles. 

An organic cathode in non-flammable phosphate electrolyte for K-ion batteries

Small-molecule organic cathodes face dissolution problem in potassium-ion batteries (PIBs). For the first time, an interesting and effective strategy is unveiled to resolve this trouble by designing a new soluble small-molecule organic compound namely [N,N'-bis(2-anthraquinone)]-1,4,5,8-naphthalenetetracarboxdiimide (NTCDI-DAQ, 237 mAh g-1): Through the precise manipulation of carbonization temperature and time, the molecules on the surface of NTCDI-DAQ particles can be transformed into the amorphous carbon with the controllable thickness. This strategy called surface self-carbonization can form a carbon protective layer on organic cathodes and significantly increase their insolubility against liquid electrolytes without affecting the electrochemical behaviors of bulk particles. As a result, the as-obtained NTCDI-DAQ@C sample displays significantly improved cathode performance in PIBs. In half cells, NTCDI-DAQ@C shows superior capacity stability of 84% to 35% of NTCDI-DAQ during 30 cycles under the same conditions. In the full cells with KC8 anode, NTCDI-DAQ@C delivers a peak discharge capacity of 236 mAh g-1cathode and a high energy density of 255 Wh kg-1cathode in 0.1-2.8 V, maintaining 40% capacity retention during 3000 cycles at 1 A g-1. To the best of our knowledge, the integrated performance of NTCDI-DAQ@C is the best one among the soluble organic cathodes reported in PIBs.

Small-molecule Organic Cathodes with Carbon Coating for Highly Efficient Potassium-ion Batteries.

Self-Carbonation of Soluble Organic Cathodes for Highly Efficient Potassium-Ion Batteries

Design of Bipolar Polymer Electrodes for Symmetric Li-Dual-Ion Batteries

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Chenbin Tang

Author Tools

Chat about Author