Lithium Solutions Research Articles

Treatment Challenges of Methimazole-Induced Agranulocytosis in Younger Patients

Introduction: Methimazole is considered the first-line antithyroid drug for Graves’ disease (GD) in children and adolescents. However, it can lead to severe adverse effects, such as agranulocytosis, which can result from direct drug toxicity or immune-mediated responses. This report aims to describe the clinical management of an adolescent with GD who developed agranulocytosis following methimazole administration. Case Presentation: A 13-year-old female, diagnosed with GD, developed neutropenia six months after starting methimazole. She was admitted with high-grade fever, sore throat, palpitations, fatigue, myalgia, and diarrhea. The treatment regimen included filgrastim, antibiotics, β-blockers, a solution of potassium iodide (SSKI), cholestyramine, and lithium. Within seven days, her absolute neutrophil count gradually improved, her fever subsided, her hyperthyroidism was controlled, and she was discharged. Discussion: Antithyroid drug-induced neutropenia represents a serious complication. In these patients, effective infection management, control of hyperthyroidism, and supportive measures to promptly increase the neutrophil count can reduce the associated morbidity and mortality. Conclusions: Close monitoring and awareness of risk factors, such as age, female sex, and higher doses of methimazole, may decrease the risk of agranulocytosis and its fatal outcomes. Alternative treatments to control hyperthyroidism during methimazole-induced agranulocytosis include β-blockade, potassium iodide solution (SSKI), cholestyramine, steroids, and lithium.

“Acid + Oxidant” Treatment Enables Selective Extraction of Lithium from Spent NCM523 Positive Electrode

With the rapid development of new energy vehicles and energy storage industries, the demand for lithium-ion batteries has surged, and the number of spent LIBs has also increased. Therefore, a new method for lithium selective extraction from spent lithium-ion battery cathode materials is proposed, aiming at more efficient recovery of valuable metals. The acid + oxidant leaching system was proposed for spent ternary positive electrode materials, which can achieve the selective and efficient extraction of lithium. In this study, 0.1 mol L−1 H2SO4 and 0.2 mol L−1 (NH4)2S2O8 were used as leaching acid and oxidant. The leaching efficiencies of Li, Ni, Co, and Mn were 98.7, 30, 3.5, and 0.1%, respectively. The lithium solution was obtained by adjusting the pH of the solution. Thermodynamic and kinetic studies of the lithium leaching process revealed that the apparent activation energy of the lithium leaching process is 46 kJ mol−1 and the rate step is the chemical reaction process. The leaching residue can be used as a ternary precursor to prepare regenerated positive electrode materials by solid-phase sintering. Electrochemical tests of the regenerated material proved that the material has good electrochemical properties. The highest discharge capacity exceeds 150 mAh g−1 at 0.2 C, and the capacity retention rate after 100 cycles exceeds 90%. The proposed new method can extract lithium from the ternary material with high selectivity and high efficiency, reducing its loss in the lengthy process. Lithium replenishment of the delithiation material can also restore its activity and realize the comprehensive utilization of elements such as nickel, cobalt, and manganese. The method combines the lithium recovery process and the material preparation process, simplifying the process and saving costs, thus providing new ideas for future method development.

Biochar-enhanced three-dimensional conductive network thick electrodes for efficient lithium extraction from salt lake brines with high Magnesia-lithium ratios

Enhancing the kinetic performance of thick electrodes is essential for improving the efficiency of lithium extraction processes. Biochar, known for its affordability and unique three-dimensional (3D) structure, is utilized across various applications. In this study, we developed a biochar-based, 3D-conductive network thick electrode (∼20 mg cm−2) by in-situ deposition of LiFePO4 (LFP) onto watermelon peel biomass (WB). Utilizing Density Functional Theory (DFT) calculations complemented by experimental data, we confirmed that this The thick electrode exhibits outstanding kinetic properties and a high capacity for lithium intercalation in brines, even in environments where the Magnesia-lithium ratios are significantly high. The electrode showed an impressive intercalation capacity of 30.67 mg g−1 within 10 min in a pure lithium solution. It also maintained high intercalation performance (31.17 mg g−1) in simulated brines with high Magnesia-lithium ratios. Moreover, in actual brine, it demonstrated a significant extraction capacity (23.87 mg g−1), effectively lowering the Magnesia-lithium ratio from 65 to 0.50. This breakthrough in high-conductivity thick electrode design offers new perspectives for lithium extraction technologies.

A contribution to understanding ion-exchange mechanisms for lithium recovery from industrial effluents of lithium-ion battery recycling operations

Industrial effluents or process waters generated from spent lithium-ion battery recycling operations often contain high concentrations of lithium ions (Li+). This study characterizes the composition of process water obtained from pre-treatment and concentration operations of LIBs recycling. Ion-exchange experiments are conducted using synthetic lithium solutions (1 g/L) and industrial waters to understand Li+ recovery. Employing four commercial cationic resins, fast Li+ exchange kinetics are observed fitting the pseudo-second order model. The equilibrium isotherm data corresponds to the Langmuir adsorption model and reveals a Li capacity of 30–32 mg/g using Amberlite™ IRC 120 H, 70 mg/g using Lewatit® TP 308 H, 37–40 mg/g using Lewatit® TP 208 Na, and 37–41 mg/g using Lewatit® TP 260 Na. While the resins initially demonstrate moderate affinity for Li+, this can be significantly enhanced by increasing the Li+ concentration. Notably, as LIBs recycling operation effluents typically contain minimal competing ions, these results underscore the potential of employing ion exchange as a viable method to recover and concentrate lithium before precipitation into lithium salts.

Recovery of lithium by pseudocapacitive electrodes in capacitive deionization

Lithium is a crucial component in rechargeable lithium-ion batteries for many applications, including the powering of electric vehicles and stationary energy storage systems. This investigation focused on two hybrid pseudocapacitive materials, the polystyrene sulfonate-MXene composite (PM) and the sodium titanate/graphene oxide composite (NG), for lithium ions recovery from aqueous Li+ resources. This was achieved by selectively removing unwanted divalent Ca2+ and Mg2+ ions, as well as monovalent K+ ions, through capacitive deionization (CDI) using a single-cell system, resulting in a final solution enriched with Li+ ions. Based on the ion selectivity order observed previously as Mg2+≈ Ca2+ >K+ > Li+, a series of CDI experiments were conducted with sequential steps to remove more selective ions first and to obtain a lithium-enriched solution with higher purity and maximum extracted fraction. Both PM and NG electrodes demonstrated promising performance when tested in binary, ternary, and quaternary ionic solutions with the recovered lithium solution purity in the range of 59.09 %-95.94 % and 59.75 %-77.17 %, respectively. Further, the highest enrichment factor values observed were SLi+,Mg2+; 268.1 for PM and SLi+,Ca2+; 44.25, for NG electrodes. The PSS-modified MXene composite electrode in obtaining the Li+ solution with the highest purity when separated Ca2+ from a binary solution. These findings offer valuable insights into the selective electrosorption of divalent ions over lithium ions through the utilization of ion intercalation pseudocapacitive nanocomposite electrodes. The obtained results hold significance in advancing novel non-precipitation techniques for the recovery of lithium ions from aqueous lithium resources.

Development of a Manganese Dioxide-Decorated Activated Carbon Nano-sorbent via Co-precipitation method for efficient lithium ion adsorption from aqueous solutions

ABSTRACT Recently, the utilization of lithium has increased significantly, particularly in high-tech industries such as nuclear, aerospace, automotive, battery, military, glass and ceramic, and lubricants. However, lithium recovery methods from brines present certain drawbacks, making lithium exploitation a global challenge. A comparative analysis of lithium recovery methods from brine solutions indicates that the adsorption method holds promising potential for separating lithium from low-concentration solutions. Despite this, the quest for an effective and efficient adsorbent for lithium-ion adsorption remains a challenge, necessitating the development of an adsorbent, using readily available materials. In this study, carbon-active underwent chemical modification. Notably, the co-precipitation method was employed for the first time to create a composite adsorbent decorated with manganese dioxide (MnO2). Various analyses, including XRD, SEM-EDS, FTIR, and BET, were conducted to elucidate the structural, morphological, physical, and chemical properties of the adsorbent. This synthesized adsorbent was applied to the adsorption of lithium from an aqueous sample. Exploration of adsorption parameters affecting capacity led to the identification of optimal conditions: 14-hour duration, an adsorbent dosage of 0.02 g, and an ambient temperature of 25°C, in a lithium solution with a concentration of 60.4 ppm. Under these conditions, the maximum adsorption capacity of the adsorbent was determined to be 30.5 mg/g. Based on experimental results, kinetic and adsorption isotherm models were investigated. The Pseudo-quadratic kinetic model, with an R2 value of 0.999, emerged as the most suitable for describing the adsorbent’s behavior. The Hill isotherm model with R2 = 0.9634 is the most appropriate isotherm model to describe the adsorbent behavior. Additionally, the selectivity of the adsorbent in the presence of other ions was investigated. The adsorbent’s reusability was examined, and after two recycling periods, the adsorbent maintained an efficiency of up to 88%, demonstrating its stability. The CAC-MnO2-P composite adsorbent shows technical and economic promise for industrial use in lithium-ion recovery processes.

Continuous-flow synthesis of lithium carbonate in a microreactor system based on spent LIBs recycling process

With the continuous expansion of the lithium-ion battery market, the collection and recycling of spent lithium-ion batteries have gradually become a concern for researchers. In this research, based on the hydrometallurgical recovery process of spent lithium-ion batteries, an efficient and continuous synthesis process of industrial lithium carbonate was developed in a microreactor system. The effects of initial concentration of lithium solution, temperature and washing conditions on recovery rate of Li and product purity were investigated, and the optimal conditions of synthesis were obtained. Compared with the semi-batch method, the microreactor system had excellent mass and heat transfer characteristics. The product had good microscopic properties, uniform particle size distribution, and the recovery rate of Li reached 94.8 % with the purity of Li2CO3 reached 99.4 %, meeting the national standard of China for industrial grade lithium carbonate. The particle size distribution of the synthesized lithium carbonate was 6.2<D50 < 7.1 μm. Finally, the hydrometallurgical recycling process of spent cathode materials was well constructed in combination with leaching, co-extraction and separation steps of metal ions.

Cosmological Lithium Solution from Discrete Gauged B-L.

The cosmological lithium problem-that theory predicts a primordial abundance far higher than the observed value-has resisted decades of attempts by cosmologists, nuclear physicists, and astronomers alike to root out systematics. We reconsider this problem in the setting of the standard model extended by gauged baryon minus lepton number, which we spontaneously break by a scalar with charge six. Cosmic strings from this breaking can support interactions converting three protons into three positrons, and we argue that an "electric"-"magnetic" interplay can give this process an amplified, strong-scale cross section in an analog of the Callan-Rubakov effect. We suggest such cosmic strings have disintegrated O(1) of the primordial lithium nuclei, and lay out what is necessary for this scheme to succeed. To our knowledge this is the first new physics mechanism with microphysical justification for the abundance of lithium uniquely to be modified after big bang nucleosynthesis.

Enhancement of LIBS signal in lithium solution at the interface between liquid and an aluminum substrate

Detecting lithium (Li) in seawater in situ is of great significance for searching deep-sea hydrothermal activities and prospecting oceanic lithium reservoirs. Underwater LIBS (Laser-induced breakdown spectroscopy) has been proven to be an attractive technique for in situ element analysis, but its detecting sensitivity is still hard to satisfy the needs of less rich element analysis. Here, we propose an effective approach to enhance the LIBS signal of Li in bulk water with an immersed metal Al substrate. In this work, a laser beam focused on the substrate's surface with focal offsets between −2.5 mm to 1.5 mm from the surface. A 24 times enhancement factor of the Li signal was achieved with a typical pulse energy of 22 mJ at the optimal focal offset of −0.5 mm. The required minimum pulse energy for 100% breakdown was reduced by 5 times, and the plasma lifetime was 3 times longer, compared with the case without substrate assistance. The quantitative results show that both the LOD and analytical prediction capability of Li can be improved by twice compared to the direct measurement. Moreover, using the background as an internal reference, the average RSD at different concentrations can be further reduced from 45% to 18%. This study not only demonstrates the existence of a spectral enhancement effect at the liquid-solid interface of underwater LIBS, but also reveals an easy-to-implement signal enhancement method for upgrading the development of underwater in situ LIBS sensors.

Modeling and application of continuous ion exchanges process for lithium recovery from salt lake brine

A composite model has been developed to simulate and optimize the continuous multi-column lithium adsorption based on the continuous adsorption of lithium from high Mg/Li ratio brines. The model not only simulates all the adsorption columns of the adsorption process, but also the auxiliary equipment connected to the adsorption columns such as pumps and valves, to describe the multi-column continuous lithium extraction process in detail. To improve the efficiency of lithium extraction, a 4-zone, 20-column carousel-type continuous lithium extraction process was proposed and optimized using the composite model. When the feed flow rate was set to 25 mL/min in the adsorption zone, 8 mL/min in the washing zone and 15 mL/min in the product zone, the Li+ extraction rate in the adsorption zone was 98.26%, the lithium loss in the washing zone was 16.12%, the magnesium removal rate in the washing process was 98.77%, the concentration of lithium solution obtained in the product zone was 488.55 mg/L, and the magnesium-lithium ratio was 6.45, with a lithium recovery of 79.68% for the whole continuous lithium extraction process. Overall, the continuous carousel lithium extraction process achieved the expected magnesium separation and continuous lithium extraction from the brine of the Qarhan Salt Lake.

Preparation of battery-grade Li2CO3 efficiently by high shear dispersion at low temperature

With the significant increase of market demand, battery-grade lithium carbonate has become an imperative research. However, it is difficult for commercially available battery-grade lithium carbonate to simultaneously meet all criteria such as dispersion, particle size, particle size distribution, and purity. Here, we proposed a flexible method to prepare battery-grade lithium carbonate with small particle size, uniform size distribution, high purity, and good dispersion by using a high shear dispersion reactor under low-temperature conditions. First, a numerical simulation model was established, and the feasibility of this proposed method was verified by computational fluid dynamics (CFD). Then, the factors of yield optimization on Li2CO3 were analyzed based on response surface methodology (RSM) by using a 3-level 4-factor Box-Behnken statistical design with a fixed lithium solution concentration as the input parameter. Moreover, the reaction kinetics, size distribution, crystal morphology, and purity of Li2CO3 were investigated. The obtained Li2CO3 possessed the average particle size in 5.85 μm and total particle size range from 1.56 to 12.97 μm, which both exhibited a ten-fold reduction compared with it prepared under conventional preparation conditions. Finally, the Li2CO3 products with 99.81% purity met the requirements of the Chinese non-ferrous metal industry standard (YS/T582-2013) for battery-grade Li2CO3. We anticipate that this work may shed light on developing efficient and controllable method for the preparation of battery-grade Li2CO3.

Pemulihan Litium Menggunakan Adsorben Hidrogen Mangan Oksida Berasal dari Spinel Litium Mangan Oksida

Lithium recovery from brine is recently attracting significant attention due to increasing industrial demand for energy storage, such as batteries. The lithium recovery from lithium brine was investigated using hydrogen manganese oxide adsorbent. The hydrogen manganese oxide adsorbent HMn2O4 (HMO) is derived from the spinel lithium manganese oxide (LMO), which is synthesized from LiOH and MnO2 precursor through the reflux method. The synthesized adsorbent was characterized using Scanning Electron Microscopy to identify its physical characteristics and its surface morphology. The adsorption capacity toward lithium solution was performed through an ion exchange process, and the adsorption values were determined using Atomic Absorption Spectroscopy (AAS). The synthesized HMO has a high lithium adsorption capacity for lithium-ion, which is 23 mg/g, and 10 mg/g for desorption. The optimum uptake capacity of HMn2O4 is 44% of the initial values (52 ppm) after 120 minutes of contact time. The synthesized hydrogen manganese oxide adsorbent has a potential industrial lithium recovery for large-scale application.

Improvement of Li/Mg monovalent ion selectivity of cation-exchange membranes by incorporation of cerium or zirconium phosphate particles

To improve the selectivity of cation-exchange membranes to the transfer of lithium with respect to magnesium during the electrodialysis desalination of lithium and magnesium sulfates solutions, the surface of a commercial cation-exchange membrane based on sulfated polystyrene was modified with cerium(III, IV) and zirconium phosphates. Upon incorporation of phosphate particles, the Li/Mg selectivity coefficients of the membranes increased up to 113%.

Comparative Study on Lithium Recovery with Ion-Selective Adsorbents and Extractants: Results of Multi-Stage Screening Test with the Use of Brine Simulated Solutions with Increasing Complexity

Oil (and natural gas) field brines can be considered promising sources of lithium for the sustainable supply of a growing market. To date, many materials have been developed for direct lithium recovery from brines, but most often these materials have been tested under various conditions, what makes it impossible to compare them. The aim of this research is to provide knowledge that would enable the comparison and selection of effective sorbents for different types of brines. For this purpose, an eight-step experimental protocol was employed. The recovery tests started with a pure lithium solution (300 mg/kg), and then other salts were gradually added, resulting in a brine containing Li+ (220 mg/kg), Na+ (7.21 wt%), Ca2+ (3.0 wt%) and Mg2+ (1000 mg/kg). For selected cases, the effect of pH was also investigated. Fifty materials (including ion exchange resins, organophosphate extractants, mineral adsorbents) were examined, for which the distribution coefficient and lithium recovery were determined. Moreover, for the most promising materials, lithium over magnesium selectivity and lithium ion capacity were determined. Only γ-Al2O3, TiO2 and MnOx-based powders keep their effectiveness in ultra-high salinity ranges and in the presence of high concentrations of Ca2+ and Mg2+ in alkaline solution.

Preparation of LiFePO4 composite based on dual carbon sources of phytic acid and glucose and its performance for lithium extraction from salt lake

In this study, biomass phytic acid (PhyA) was used as phosphorus source and internal carbon source, and glucose (GC) was used as external carbon source to prepare dual carbon source LiFePO4 (GC/IC/LFP) electrode material containing intercalated carbon (IC) and coated carbon (GC). Based on the working principle of rocking chair lithium ion battery, a new electrochemical system was constructed to efficiently extract Li+ from salt lake brine with high Mg/Li ratio (53) and Na/Li ratio (416). The effects of electrolytic voltage and coexisting ions on the capacity of lithium extraction/insertion at room temperature were investigated. It was found that when the electrolytic voltage was 1.0 V, the insertion capacity of lithium in pure lithium solution could reach 43.67 mg·LiFePO4 (1 g)−1, which was 99.25 % of the theoretical capacity (44 mg). The lithium extraction capacity can reach 43.20 mg·LiFePO4 (1 g)−1, which is 98.92 % of the insertion capacity. In the simulated salt lake brine with a large number of coexisting ions, when the electrolytic voltage is 0.8 V, the lithium insertion capacity can reach 38.09 mg·LiFePO4 (1 g)−1, which is 86.57 % of the theoretical capacity, and the lithium extraction capacity can reach 35.00 mg·LiFePO4 (1 g)−1, which is 91.89 % of the insertion capacity. The system maintains high selectivity for Li+ extraction. The concentration of coexisting ions of K+, Mg2+, Na+ and Ca2+ decreased by more than 8800, 4500, 25,000 and 1200 times, respectively. The Mg/Li ratio decreased from 53 to 0.09, and the Na/Li ratio decreased from 416 to 0.10. After ten times of extraction, the electrode still has high coexisting Men+/Li+ separation performance, although the extraction performance is decreased to a certain extent.

High-safety, wide-temperature-range, low-external-pressure and dendrite-free lithium battery with sulfide solid electrolyte

Li metal is considered to be the most ideal anode due to its highest energy density, but traditional lithium-metal liquid-electrolyte battery system suffers from low Coulombic efficiency, repetitive SEI formation, Li dendrite growth, etc. Herein, a new battery configuration is proposed to exploit room-temperature liquid lithium solutions (Li-BP-Ether) as anodes and argyrodite sulfide as solid electrolyte. Such liquid lithium solutions can deliver high safety performance, excellent dendrite suppression capability, low redox potentials, and high conductivity of 12 mS cm−1 at room temperature. Moreover, sulfide solid electrolyte has the highest room-temperature ionic conductivity among all solid electrolytes and ideal mechanical ductility for fully compact layer simply by cold pressing. This battery configuration combines the advantages of these materials and can operate at neglectable external pressure (3 kPa) in a wide temperature range (−20∼50 °C). As a result, a high reversible discharge capacity (140.4 mAh g−1) and high efficiencies (99.7% Coulombic efficiency and >96% energy efficiency after ∼100 cycles) are achieved. Furthermore, this battery demonstrates the best cycle stability and the highest efficiency among all the liquid lithium solution battery systems using solid cathodes reported so far. Overall, this class of battery configuration may open up a promising route for high-energy-density, cost-effective and safe rechargeable lithium batteries.

Selective cobalt-exchange membranes for electrodialysis dedicated for cobalt recovery from lithium, cobalt and nickel solutions

The presented research deals with the developing cobalt selective membrane dedicated to the selective recovery of Co2+ from a mixture of lithium, cobalt and nickel. The membrane was prepared according to the chemical grafting methods within two stages. The first stage involved hydrolyzation of the PAN surface and then incorporating 5-chloro-8-hydroxyquinoline. The obtained membrane and its modification stage were evaluated by SEM, FTIR, elemental analysis, surface energetics, analytical measurements and EIS. The electrodialysis investigations confirmed the high selective behaviour of the developed membranes. Finally, from multi-component solutions, the cobalt was removed with 91% efficiency and Co to Li separation factor reached the value of 5.6 within 3 hr of the electrodialysis process. From the surface modification perspective, this work explores selective membranes' use to recover valuable elements from the mixture in batteries.

Influence of Ammonia on the Corrosion Behavior of a Zr–Sn–Nb Alloy in High Temperature Water

Corrosion behaviors, microstructures of oxide films, and hydrogen absorptions of a Chinese domestic Zr alloy in 6.7 × 10−3 mol/L ammonia solution and 2.9 × 10−4 mol/L LiOH+9.3 × 10−2 mol/L H3BO3 solution at 360 °C, 18.6 MPa were studied. Weight gains, oxide film thicknesses, and hydrogen absorptions showed that the corrosion rate in the ammonia solution is a little higher than that in the boron–lithium solution. There is no significant difference in the microstructure and crystalline structure between the oxide films formed in the two types of solutions. The element distributions along the depth direction of the oxide films showed the existence of nitrogen in the oxide film formed in ammonia solution. Moreover, nitrogen was found to be segregated in local areas in a range of about 2 μm from the oxide/metal interface. The corrosion behavior of the Chinese domestic Zr alloy in 360 °C aqueous solution shows no difference with other Zr alloys.

Liquid-phase synthesis of Li2S and Li3PS4 with lithium-based organic solutions

Sulfide solid electrolytes are widely regarded as one of the most promising technical routes to realize all-solid-state batteries (ASSBs) due to their high ionic conductivity and favorable deformability. However, the relatively high price of the crucial starting material, Li2S, results in high costs of sulfide solid electrolytes, limiting their practical application in ASSBs. To solve this problem, we develop a new synthesis route of Li2S via liquid-phase synthesis method, employing lithium and biphenyl in 1, 2-dimethoxyethane (DME) ether solvent to form a lithium solution as the lithium precursor. Because of the comparatively strong reducibility of the lithium solution, its reaction with sulfur proceeds effectively even at room temperature. This new synthesis route of Li2S starts with cheap precursors of lithium, sulfur, biphenyl and DME solvent, and the only remaining byproduct (DME solution of biphenyl) after the collection of Li2S product can be recycled and reused. Besides, the reaction can proceed effectively at room temperature with mild condition, reducing energy cost to a great extent. The as-synthesized Li2S owns uniform and extremely small particle size, proved to be feasible in synthesizing sulfide solid electrolytes (such as the solid-state synthesis of Li6PS5Cl). Spontaneously, this lithium solution can be directly employed in the synthesis of Li3PS4 solid electrolytes via liquid-phase synthesis method, in which the centrifugation and heat treatment processes of Li2S are not necessary, providing simplified production process. The as-synthesized Li3PS4 exhibits typical Li+ conductivity of 1.85×10−4 S⋅cm−1 at 30 °C.

Controlled Growth of the Interface of CdWOx/GDY for Hydrogen Energy Conversion

AbstractDirectly extracting hydrogen energy from water in one device to achieve sustainable hydrogen energy generation‐conversion‐electricity storage system is an ideal major step forward for enabling a zero‐pollution, hydrogen‐fueled economy. The new concept of hydrogen energy conversion can be enabled by spontaneous reduction of nitrate to ammonia driven by potential differences between the well‐matched anode and cathode, leading to the full use of the electrochemical redox reactions to generate electric energy. The hydrogen energy in the acidic electrolyte can be transformed to electric energy with the rationally assembled primary battery, which can simultaneously power the electric devices and produce high value‐added ammonia. The new concept of hydrogen conversion device shows a record‐high specific capacity of 15 500 mA h g–1 and achieves the highest ammonia production rate (149 mmol gcat–1 h–1) and Faradaic Efficiency (99.2%) in acidic electrolytes. This work opens a new direction for hydrogen conversion and utilization which has obvious advantages over lithium and battery solutions.